v2 RC2 (#33)

* Add PostgreSQL back end (#30)
* Upgrade password storage (#32)
* Change podcast/episode storage for SQLite (#29)
* Move date/time handling to NodaTime (#31)

build.fsx

@@ -34,9 +34,9 @@ let version =
 let zipTheme (name : string) (_ : TargetParameter) =
     let path = $"src/{name}-theme"
     !! $"{path}/**/*"
-    |> Zip.filesAsSpecs path //$"src/{name}-theme"
+    |> Zip.filesAsSpecs path
     |> Seq.filter (fun (_, name) -> not (name.EndsWith ".zip"))
-    |> Zip.zipSpec $"{releasePath}/{name}.zip"
+    |> Zip.zipSpec $"{releasePath}/{name}-theme.zip"
 
 /// Publish the project for the given runtime ID    
 let publishFor rid (_ : TargetParameter) =
@@ -45,11 +45,14 @@ let publishFor rid (_ : TargetParameter) =
 /// Package published output for the given runtime ID
 let packageFor (rid : string) (_ : TargetParameter) =
     let path = $"{projectPath}/bin/Release/net6.0/{rid}/publish"
+    let prodSettings = $"{path}/appsettings.Production.json"
+    if File.exists prodSettings then File.delete prodSettings
     [ !! $"{path}/**/*"
         |> Zip.filesAsSpecs path
-        |> Zip.moveToFolder "app"
-      Seq.singleton ($"{releasePath}/admin.zip", "admin.zip")
-      Seq.singleton ($"{releasePath}/default.zip", "default.zip")
+        |> Seq.map (fun (orig, dest) ->
+            orig, if dest.StartsWith "MyWebLog" then dest.Replace ("MyWebLog", "myWebLog") else dest)
+      Seq.singleton ($"{releasePath}/admin-theme.zip", "admin-theme.zip")
+      Seq.singleton ($"{releasePath}/default-theme.zip", "default-theme.zip")
     ]
     |> Seq.concat
     |> Zip.zipSpec $"{releasePath}/myWebLog-{version}.{rid}.zip"
@@ -86,7 +89,7 @@ Target.create "RepackageLinux" (fun _ ->
     Shell.mkdir workDir
     Zip.unzip workDir zipArchive
     Shell.cd workDir
-    sh "chmod" [ "+x"; "app/MyWebLog" ]
+    sh "chmod" [ "+x"; "./myWebLog" ]
     sh "tar" [ "cfj"; $"../myWebLog-{version}.linux-x64.tar.bz2"; "." ]
     Shell.cd "../.."
     Shell.rm zipArchive
@@ -96,8 +99,8 @@ Target.create "RepackageLinux" (fun _ ->
 Target.create "All" ignore
 
 Target.create "RemoveThemeArchives" (fun _ ->
-    Shell.rm $"{releasePath}/admin.zip"
-    Shell.rm $"{releasePath}/default.zip"
+    Shell.rm $"{releasePath}/admin-theme.zip"
+    Shell.rm $"{releasePath}/default-theme.zip"
 )
 
 Target.create "CI" ignore

rethink-case-fix.js

@@ -1,171 +0,0 @@
-
-// Category
-r.db('myWebLog').table('Category').map({
-    Description: r.row('description'),
-    Id: r.row('id'),
-    Name: r.row('name'),
-    ParentId: r.row('parentId'),
-    Slug: r.row('slug'),
-    WebLogId: r.row('webLogId')
-})
-
-// Page
-r.db('myWebLog').table('Page').map({
-    AuthorId: r.row('authorId'),
-    Id: r.row('id'),
-    Metadata: r.row('metadata').map(function (meta) {
-        return { Name: meta('name'), Value: meta('value') }
-    }),
-    Permalink: r.row('permalink'),
-    PriorPermalinks: r.row('priorPermalinks'),
-    PublishedOn: r.row('publishedOn'),
-    Revisions: r.row('revisions').map(function (rev) {
-        return {
-            AsOf: rev('asOf'),
-            Text: rev('text')
-        }
-    }),
-    IsInPageList: r.row('showInPageList'),
-    Template: r.row('template'),
-    Text: r.row('text'),
-    Title: r.row('title'),
-    UpdatedOn: r.row('updatedOn'),
-    WebLogId: r.row('webLogId')
-})
-
-// Post
-r.db('myWebLog').table('Post').map({
-    AuthorId: r.row('authorId'),
-    CategoryIds: r.row('categoryIds'),
-    Episode: r.branch(r.row.hasFields('episode'), {
-        Duration: r.row('episode')('duration'),
-        Length: r.row('episode')('length'),
-        Media: r.row('episode')('media'),
-        MediaType: r.row('episode')('mediaType').default(null),
-        ImageUrl: r.row('episode')('imageUrl').default(null),
-        Subtitle: r.row('episode')('subtitle').default(null),
-        Explicit: r.row('episode')('explicit').default(null),
-        ChapterFile: r.row('episode')('chapterFile').default(null),
-        ChapterType: r.row('episode')('chapterType').default(null),
-        TranscriptUrl: r.row('episode')('transcriptUrl').default(null),
-        TranscriptType: r.row('episode')('transcriptType').default(null),
-        TranscriptLang: r.row('episode')('transcriptLang').default(null),
-        TranscriptCaptions: r.row('episode')('transcriptCaptions').default(null),
-        SeasonNumber: r.row('episode')('seasonNumber').default(null),
-        SeasonDescription: r.row('episode')('seasonDescription').default(null),
-        EpisodeNumber: r.row('episode')('episodeNumber').default(null),
-        EpisodeDescription: r.row('episode')('episodeDescription').default(null)
-    }, null),
-    Id: r.row('id'),
-    Metadata: r.row('metadata').map(function (meta) {
-        return { Name: meta('name'), Value: meta('value') }
-    }),
-    Permalink: r.row('permalink'),
-    PriorPermalinks: r.row('priorPermalinks'),
-    PublishedOn: r.row('publishedOn'),
-    Revisions: r.row('revisions').map(function (rev) {
-        return {
-            AsOf: rev('asOf'),
-            Text: rev('text')
-        }
-    }),
-    Status: r.row('status'),
-    Tags: r.row('tags'),
-    Template: r.row('template').default(null),
-    Text: r.row('text'),
-    Title: r.row('title'),
-    UpdatedOn: r.row('updatedOn'),
-    WebLogId: r.row('webLogId')
-})
-
-// TagMap
-r.db('myWebLog').table('TagMap').map({
-    Id: r.row('id'),
-    Tag: r.row('tag'),
-    UrlValue: r.row('urlValue'),
-    WebLogId: r.row('webLogId')
-})
-
-// Theme
-r.db('myWebLog').table('Theme').map({
-    Id: r.row('id'),
-    Name: r.row('name'),
-    Templates: r.row('templates').map(function (tmpl) {
-        return {
-            Name: tmpl('name'),
-            Text: tmpl('text')
-        }
-    }),
-    Version: r.row('version')
-})
-
-// ThemeAsset
-r.db('myWebLog').table('ThemeAsset').map({
-    Data: r.row('data'),
-    Id: r.row('id'),
-    UpdatedOn: r.row('updatedOn')
-})
-
-// WebLog
-r.db('myWebLog').table('WebLog').map(
-    { AutoHtmx: r.row('autoHtmx'),
-        DefaultPage: r.row('defaultPage'),
-        Id: r.row('id'),
-        Name: r.row('name'),
-        PostsPerPage: r.row('postsPerPage'),
-        Rss: {
-            IsCategoryEnabled: r.row('rss')('categoryEnabled'),
-            Copyright: r.row('rss')('copyright'),
-            CustomFeeds: r.row('rss')('customFeeds').map(function (feed) {
-                return {
-                    Id: feed('id'),
-                    Path: feed('path'),
-                    Podcast: {
-                        DefaultMediaType: feed('podcast')('defaultMediaType'),
-                        DisplayedAuthor: feed('podcast')('displayedAuthor'),
-                        Email: feed('podcast')('email'),
-                        Explicit: feed('podcast')('explicit'),
-                        FundingText: feed('podcast')('fundingText'),
-                        FundingUrl: feed('podcast')('fundingUrl'),
-                        PodcastGuid: feed('podcast')('guid'),
-                        AppleCategory: feed('podcast')('iTunesCategory'),
-                        AppleSubcategory: feed('podcast')('iTunesSubcategory'),
-                        ImageUrl: feed('podcast')('imageUrl'),
-                        ItemsInFeed: feed('podcast')('itemsInFeed'),
-                        MediaBaseUrl: feed('podcast')('mediaBaseUrl'),
-                        Medium: feed('podcast')('medium'),
-                        Subtitle: feed('podcast')('subtitle'),
-                        Summary: feed('podcast')('summary'),
-                        Title: feed('podcast')('title')
-                    },
-                    Source: feed('source')
-                }
-            }),
-            IsFeedEnabled: r.row('rss')('feedEnabled'),
-            FeedName: r.row('rss')('feedName'),
-            ItemsInFeed: r.row('rss')('itemsInFeed'),
-            IsTagEnabled: r.row('rss')('tagEnabled')
-        },
-        Slug: r.row('slug'),
-        Subtitle: r.row('subtitle'),
-        ThemeId: r.row('themePath'),
-        TimeZone: r.row('timeZone'),
-        Uploads: r.row('uploads'),
-        UrlBase: r.row('urlBase')
-    })
-
-// WebLogUser
-r.db('myWebLog').table('WebLogUser').map({
-    AccessLevel: r.row('authorizationLevel'),
-    FirstName: r.row('firstName'),
-    Id: r.row('id'),
-    LastName: r.row('lastName'),
-    PasswordHash: r.row('passwordHash'),
-    PreferredName: r.row('preferredName'),
-    Salt: r.row('salt'),
-    Url: r.row('url'),
-    Email: r.row('userName'),
-    WebLogId: r.row('webLogId'),
-    CreatedOn: r.branch(r.row.hasFields('createdOn'), r.row('createdOn'), r.expr(new Date(0))),
-    LastSeenOn: r.row('lastSeenOn').default(null)
-})

src/Directory.Build.props

@@ -0,0 +1,10 @@
+<Project>
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <DebugType>embedded</DebugType>
+    <AssemblyVersion>2.0.0.0</AssemblyVersion>
+    <FileVersion>2.0.0.0</FileVersion>
+    <Version>2.0.0</Version>
+    <VersionSuffix>rc2</VersionSuffix>
+  </PropertyGroup>
+</Project>

src/MyWebLog.Data/Converters.fs

@@ -122,12 +122,13 @@ module Json =
             (string >> WebLogUserId) reader.Value
 
     open Microsoft.FSharpLu.Json
+    open NodaTime
+    open NodaTime.Serialization.JsonNet
     
-    /// All converters to use for data conversion
-    let all () : JsonConverter seq =
-        seq {
+    /// Configure a serializer to use these converters
+    let configure (ser : JsonSerializer) =
         // Our converters
-            CategoryIdConverter       ()
+        [   CategoryIdConverter       () :> JsonConverter
             CommentIdConverter        ()
             CustomFeedIdConverter     ()
             CustomFeedSourceConverter ()
@@ -143,6 +144,35 @@ module Json =
             UploadIdConverter         ()
             WebLogIdConverter         ()
             WebLogUserIdConverter     ()
+        ] |> List.iter ser.Converters.Add
+        // NodaTime
+        let _ = ser.ConfigureForNodaTime DateTimeZoneProviders.Tzdb
         // Handles DUs with no associated data, as well as option fields
-            CompactUnionJsonConverter ()
-        }
+        ser.Converters.Add (CompactUnionJsonConverter ())
+        ser.NullValueHandling     <- NullValueHandling.Ignore
+        ser.MissingMemberHandling <- MissingMemberHandling.Ignore
+        ser
+    
+    /// Serializer settings extracted from a JsonSerializer (a property sure would be nice...)
+    let mutable private serializerSettings : JsonSerializerSettings option = None
+    
+    /// Extract settings from the serializer to be used in JsonConvert calls
+    let settings (ser : JsonSerializer) =
+        if Option.isNone serializerSettings then
+            serializerSettings <- JsonSerializerSettings (
+                ConstructorHandling            = ser.ConstructorHandling,
+                ContractResolver               = ser.ContractResolver,
+                Converters                     = ser.Converters,
+                DefaultValueHandling           = ser.DefaultValueHandling,
+                DateFormatHandling             = ser.DateFormatHandling,
+                MetadataPropertyHandling       = ser.MetadataPropertyHandling,
+                MissingMemberHandling          = ser.MissingMemberHandling,
+                NullValueHandling              = ser.NullValueHandling,
+                ObjectCreationHandling         = ser.ObjectCreationHandling,
+                ReferenceLoopHandling          = ser.ReferenceLoopHandling,
+                SerializationBinder            = ser.SerializationBinder,
+                TraceWriter                    = ser.TraceWriter,
+                TypeNameAssemblyFormatHandling = ser.TypeNameAssemblyFormatHandling,
+                TypeNameHandling               = ser.TypeNameHandling)
+                |> Some
+        serializerSettings.Value

src/MyWebLog.Data/Interfaces.fs

@@ -1,9 +1,20 @@
 namespace MyWebLog.Data
 
-open System
 open System.Threading.Tasks
 open MyWebLog
 open MyWebLog.ViewModels
+open Newtonsoft.Json
+open NodaTime
+
+/// The result of a category deletion attempt
+type CategoryDeleteResult =
+    /// The category was deleted successfully
+    | CategoryDeleted
+    /// The category was deleted successfully, and its children were reassigned to its parent
+    | ReassignedChildCategories
+    /// The category was not found, so no effort was made to delete it
+    | CategoryNotFound
+
 
 /// Data functions to support manipulating categories
 type ICategoryData =
@@ -18,7 +29,7 @@ type ICategoryData =
     abstract member CountTopLevel : WebLogId -> Task<int>
     
     /// Delete a category (also removes it from posts)
-    abstract member Delete : CategoryId -> WebLogId -> Task<bool>
+    abstract member Delete : CategoryId -> WebLogId -> Task<CategoryDeleteResult>
     
     /// Find all categories for a web log, sorted alphabetically and grouped by hierarchy
     abstract member FindAllForView : WebLogId -> Task<DisplayCategory[]>
@@ -127,7 +138,7 @@ type IPostData =
         WebLogId -> tag : string -> pageNbr : int -> postsPerPage : int -> Task<Post list>
     
     /// Find the next older and newer post for the given published date/time (excluding revisions and prior permalinks)
-    abstract member FindSurroundingPosts : WebLogId -> publishedOn : DateTime -> Task<Post option * Post option>
+    abstract member FindSurroundingPosts : WebLogId -> publishedOn : Instant -> Task<Post option * Post option>
     
     /// Restore posts from a backup
     abstract member Restore : Post list -> Task<unit>
@@ -167,9 +178,15 @@ type ITagMapData =
 /// Functions to manipulate themes
 type IThemeData =
     
-    /// Retrieve all themes (except "admin")
+    /// Retrieve all themes (except "admin") (excluding the text of templates)
     abstract member All : unit -> Task<Theme list>
     
+    /// Delete a theme
+    abstract member Delete : ThemeId -> Task<bool>
+    
+    /// Determine if a theme exists
+    abstract member Exists : ThemeId -> Task<bool>
+    
     /// Find a theme by its ID
     abstract member FindById : ThemeId -> Task<Theme option>
     
@@ -310,6 +327,9 @@ type IData =
     /// Web log user data functions
     abstract member WebLogUser : IWebLogUserData
     
+    /// A JSON serializer for use in persistence
+    abstract member Serializer : JsonSerializer
+    
     /// Do any required start up data checks
     abstract member StartUp : unit -> Task<unit>
     

src/MyWebLog.Data/MyWebLog.Data.fsproj

@@ -1,20 +1,20 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
-	<PropertyGroup>
-		<TargetFramework>net6.0</TargetFramework>
-		<GenerateDocumentationFile>true</GenerateDocumentationFile>
-		<DebugType>embedded</DebugType>
-	</PropertyGroup>
-
 	<ItemGroup>
 		<ProjectReference Include="..\MyWebLog.Domain\MyWebLog.Domain.fsproj" />
 	</ItemGroup>
 
 	<ItemGroup>
-		<PackageReference Include="Microsoft.Data.Sqlite" Version="6.0.7" />
+		<PackageReference Include="Microsoft.Data.Sqlite" Version="6.0.8" />
+		<PackageReference Include="Microsoft.Extensions.Caching.Abstractions" Version="6.0.0" />
 		<PackageReference Include="Microsoft.Extensions.Configuration.Abstractions" Version="6.0.0" />
 		<PackageReference Include="Microsoft.FSharpLu.Json" Version="0.11.7" />
 		<PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
+		<PackageReference Include="NodaTime" Version="3.1.2" />
+		<PackageReference Include="NodaTime.Serialization.JsonNet" Version="3.0.0" />
+		<PackageReference Include="Npgsql" Version="6.0.6" />
+		<PackageReference Include="Npgsql.FSharp" Version="5.3.0" />
+		<PackageReference Include="Npgsql.NodaTime" Version="6.0.6" />
 		<PackageReference Include="RethinkDb.Driver" Version="2.3.150" />
 		<PackageReference Include="RethinkDb.Driver.FSharp" Version="0.9.0-beta-07" />
 		<PackageReference Update="FSharp.Core" Version="6.0.5" />
@@ -35,6 +35,17 @@
 		<Compile Include="SQLite\SQLiteWebLogData.fs" />
 		<Compile Include="SQLite\SQLiteWebLogUserData.fs" />
 		<Compile Include="SQLiteData.fs" />
+		<Compile Include="Postgres\PostgresHelpers.fs" />
+		<Compile Include="Postgres\PostgresCache.fs" />
+		<Compile Include="Postgres\PostgresCategoryData.fs" />
+		<Compile Include="Postgres\PostgresPageData.fs" />
+		<Compile Include="Postgres\PostgresPostData.fs" />
+		<Compile Include="Postgres\PostgresTagMapData.fs" />
+		<Compile Include="Postgres\PostgresThemeData.fs" />
+		<Compile Include="Postgres\PostgresUploadData.fs" />
+		<Compile Include="Postgres\PostgresWebLogData.fs" />
+		<Compile Include="Postgres\PostgresWebLogUserData.fs" />
+        <Compile Include="PostgresData.fs" />
 	</ItemGroup>
 
 </Project>

src/MyWebLog.Data/Postgres/PostgresCache.fs

@@ -0,0 +1,210 @@
+namespace MyWebLog.Data.Postgres
+
+open System.Threading
+open System.Threading.Tasks
+open Microsoft.Extensions.Caching.Distributed
+open NodaTime
+open Npgsql.FSharp
+
+/// Helper types and functions for the cache
+[<AutoOpen>]
+module private Helpers =
+    
+    /// The cache entry
+    type Entry =
+        {   /// The ID of the cache entry
+            Id : string
+            
+            /// The value to be cached
+            Payload : byte[]
+            
+            /// When this entry will expire
+            ExpireAt : Instant
+            
+            /// The duration by which the expiration should be pushed out when being refreshed
+            SlidingExpiration : Duration option
+            
+            /// The must-expire-by date/time for the cache entry
+            AbsoluteExpiration : Instant option
+        }
+    
+    /// Run a task synchronously
+    let sync<'T> (it : Task<'T>) = it |> (Async.AwaitTask >> Async.RunSynchronously)
+    
+    /// Get the current instant
+    let getNow () = SystemClock.Instance.GetCurrentInstant ()
+    
+    /// Create a parameter for the expire-at time
+    let expireParam =
+        typedParam "expireAt"
+
+
+/// A distributed cache implementation in PostgreSQL used to handle sessions for myWebLog
+type DistributedCache (connStr : string) =
+    
+    // ~~~ INITIALIZATION ~~~
+    
+    do
+        task {
+            let! exists =
+                Sql.connect connStr
+                |> Sql.query $"
+                    SELECT EXISTS
+                        (SELECT 1 FROM pg_tables WHERE schemaname = 'public' AND tablename = 'session')
+                      AS {existsName}"
+                |> Sql.executeRowAsync Map.toExists
+            if not exists then
+                let! _ =
+                    Sql.connect connStr
+                    |> Sql.query
+                        "CREATE TABLE session (
+                            id                  TEXT        NOT NULL PRIMARY KEY,
+                            payload             BYTEA       NOT NULL,
+                            expire_at           TIMESTAMPTZ NOT NULL,
+                            sliding_expiration  INTERVAL,
+                            absolute_expiration TIMESTAMPTZ);
+                        CREATE INDEX idx_session_expiration ON session (expire_at)"
+                    |> Sql.executeNonQueryAsync
+                ()
+        } |> sync
+    
+    // ~~~ SUPPORT FUNCTIONS ~~~
+    
+    /// Get an entry, updating it for sliding expiration
+    let getEntry key = backgroundTask {
+        let idParam = "@id", Sql.string key
+        let! tryEntry =
+            Sql.connect connStr
+            |> Sql.query "SELECT * FROM session WHERE id = @id"
+            |> Sql.parameters [ idParam ]
+            |> Sql.executeAsync (fun row ->
+                {   Id                 = row.string                     "id"
+                    Payload            = row.bytea                      "payload"
+                    ExpireAt           = row.fieldValue<Instant>        "expire_at"
+                    SlidingExpiration  = row.fieldValueOrNone<Duration> "sliding_expiration"
+                    AbsoluteExpiration = row.fieldValueOrNone<Instant>  "absolute_expiration"   })
+            |> tryHead
+        match tryEntry with
+        | Some entry ->
+            let now      = getNow ()
+            let slideExp = defaultArg entry.SlidingExpiration  Duration.MinValue
+            let absExp   = defaultArg entry.AbsoluteExpiration Instant.MinValue
+            let needsRefresh, item =
+                if entry.ExpireAt = absExp then false, entry
+                elif slideExp = Duration.MinValue && absExp = Instant.MinValue then false, entry
+                elif absExp > Instant.MinValue && entry.ExpireAt.Plus slideExp > absExp then
+                    true, { entry with ExpireAt = absExp }
+                else true, { entry with ExpireAt = now.Plus slideExp }
+            if needsRefresh then
+                let! _ =
+                    Sql.connect connStr
+                    |> Sql.query "UPDATE session SET expire_at = @expireAt WHERE id = @id"
+                    |> Sql.parameters [ expireParam item.ExpireAt; idParam ]
+                    |> Sql.executeNonQueryAsync
+                ()
+            return if item.ExpireAt > now then Some entry else None
+        | None -> return None
+    }
+    
+    /// The last time expired entries were purged (runs every 30 minutes)
+    let mutable lastPurge = Instant.MinValue
+    
+    /// Purge expired entries every 30 minutes
+    let purge () = backgroundTask {
+        let now = getNow ()
+        if lastPurge.Plus (Duration.FromMinutes 30L) < now then
+            let! _ =
+                Sql.connect connStr
+                |> Sql.query "DELETE FROM session WHERE expire_at < @expireAt"
+                |> Sql.parameters [ expireParam now ]
+                |> Sql.executeNonQueryAsync
+            lastPurge <- now
+    }
+    
+    /// Remove a cache entry
+    let removeEntry key = backgroundTask {
+        let! _ =
+            Sql.connect connStr
+            |> Sql.query "DELETE FROM session WHERE id = @id"
+            |> Sql.parameters [ "@id", Sql.string key ]
+            |> Sql.executeNonQueryAsync
+        ()
+    }
+    
+    /// Save an entry
+    let saveEntry (opts : DistributedCacheEntryOptions) key payload = backgroundTask {
+        let now = getNow ()
+        let expireAt, slideExp, absExp =
+            if opts.SlidingExpiration.HasValue then
+                let slide = Duration.FromTimeSpan opts.SlidingExpiration.Value
+                now.Plus slide, Some slide, None
+            elif opts.AbsoluteExpiration.HasValue then
+                let exp = Instant.FromDateTimeOffset opts.AbsoluteExpiration.Value
+                exp, None, Some exp
+            elif opts.AbsoluteExpirationRelativeToNow.HasValue then
+                let exp = now.Plus (Duration.FromTimeSpan opts.AbsoluteExpirationRelativeToNow.Value)
+                exp, None, Some exp
+            else
+                // Default to 1 hour sliding expiration
+                let slide = Duration.FromHours 1
+                now.Plus slide, Some slide, None
+        let! _ =
+            Sql.connect connStr
+            |> Sql.query
+                "INSERT INTO session (
+                    id, payload, expire_at, sliding_expiration, absolute_expiration
+                ) VALUES (
+                    @id, @payload, @expireAt, @slideExp, @absExp
+                ) ON CONFLICT (id) DO UPDATE
+                SET payload             = EXCLUDED.payload,
+                    expire_at           = EXCLUDED.expire_at,
+                    sliding_expiration  = EXCLUDED.sliding_expiration,
+                    absolute_expiration = EXCLUDED.absolute_expiration"
+            |> Sql.parameters
+                [   "@id",      Sql.string key
+                    "@payload", Sql.bytea payload
+                    expireParam expireAt
+                    optParam "slideExp" slideExp
+                    optParam "absExp"   absExp ]
+            |> Sql.executeNonQueryAsync
+        ()
+    }
+        
+    // ~~~ IMPLEMENTATION FUNCTIONS ~~~
+    
+    /// Retrieve the data for a cache entry
+    let get key (_ : CancellationToken) = backgroundTask {
+        match! getEntry key with
+        | Some entry ->
+            do! purge ()
+            return entry.Payload
+        | None -> return null
+    }
+    
+    /// Refresh an entry
+    let refresh key (cancelToken : CancellationToken) = backgroundTask {
+        let! _ = get key cancelToken
+        ()
+    }
+    
+    /// Remove an entry
+    let remove key (_ : CancellationToken) = backgroundTask {
+        do! removeEntry key
+        do! purge ()
+    }
+    
+    /// Set an entry
+    let set key value options (_ : CancellationToken) = backgroundTask {
+        do! saveEntry options key value
+        do! purge ()
+    }
+    
+    interface IDistributedCache with
+        member this.Get key = get key CancellationToken.None |> sync
+        member this.GetAsync (key, token) = get key token
+        member this.Refresh key = refresh key CancellationToken.None |> sync
+        member this.RefreshAsync (key, token) = refresh key token
+        member this.Remove key = remove key CancellationToken.None |> sync
+        member this.RemoveAsync (key, token) = remove key token
+        member this.Set (key, value, options) = set key value options CancellationToken.None |> sync
+        member this.SetAsync (key, value, options, token) = set key value options token

src/MyWebLog.Data/Postgres/PostgresCategoryData.fs

@@ -0,0 +1,172 @@
+namespace MyWebLog.Data.Postgres
+
+open MyWebLog
+open MyWebLog.Data
+open Npgsql
+open Npgsql.FSharp
+
+/// PostgreSQL myWebLog category data implementation
+type PostgresCategoryData (conn : NpgsqlConnection) =
+    
+    /// Count all categories for the given web log
+    let countAll webLogId =
+        Sql.existingConnection conn
+        |> Sql.query $"SELECT COUNT(id) AS {countName} FROM category WHERE web_log_id = @webLogId"
+        |> Sql.parameters [ webLogIdParam webLogId ]
+        |> Sql.executeRowAsync Map.toCount
+    
+    /// Count all top-level categories for the given web log
+    let countTopLevel webLogId =
+        Sql.existingConnection conn
+        |> Sql.query $"SELECT COUNT(id) AS {countName} FROM category WHERE web_log_id = @webLogId AND parent_id IS NULL"
+        |> Sql.parameters [ webLogIdParam webLogId ]
+        |> Sql.executeRowAsync Map.toCount
+    
+    /// Retrieve all categories for the given web log in a DotLiquid-friendly format
+    let findAllForView webLogId = backgroundTask {
+        let! cats =
+            Sql.existingConnection conn
+            |> Sql.query "SELECT * FROM category WHERE web_log_id = @webLogId ORDER BY LOWER(name)"
+            |> Sql.parameters [ webLogIdParam webLogId ]
+            |> Sql.executeAsync Map.toCategory
+        let ordered = Utils.orderByHierarchy cats None None []
+        let counts  =
+            ordered
+            |> Seq.map (fun it ->
+                // Parent category post counts include posts in subcategories
+                let catIdSql, catIdParams =
+                    ordered
+                    |> Seq.filter (fun cat -> cat.ParentNames |> Array.contains it.Name)
+                    |> Seq.map (fun cat -> cat.Id)
+                    |> Seq.append (Seq.singleton it.Id)
+                    |> List.ofSeq
+                    |> inClause "AND pc.category_id" "id" id
+                let postCount =
+                    Sql.existingConnection conn
+                    |> Sql.query $"
+                        SELECT COUNT(DISTINCT p.id) AS {countName}
+                          FROM post p
+                               INNER JOIN post_category pc ON pc.post_id = p.id
+                         WHERE p.web_log_id = @webLogId
+                           AND p.status     = 'Published'
+                           {catIdSql}"
+                    |> Sql.parameters (webLogIdParam webLogId :: catIdParams)
+                    |> Sql.executeRowAsync Map.toCount
+                    |> Async.AwaitTask
+                    |> Async.RunSynchronously
+                it.Id, postCount)
+            |> List.ofSeq
+        return
+            ordered
+            |> Seq.map (fun cat ->
+                { cat with
+                    PostCount = counts
+                                |> List.tryFind (fun c -> fst c = cat.Id)
+                                |> Option.map snd
+                                |> Option.defaultValue 0
+                })
+            |> Array.ofSeq
+    }
+    /// Find a category by its ID for the given web log
+    let findById catId webLogId =
+        Sql.existingConnection conn
+        |> Sql.query "SELECT * FROM category WHERE id = @id AND web_log_id = @webLogId"
+        |> Sql.parameters [ "@id", Sql.string (CategoryId.toString catId); webLogIdParam webLogId ]
+        |> Sql.executeAsync Map.toCategory
+        |> tryHead
+    
+    /// Find all categories for the given web log
+    let findByWebLog webLogId =
+        Sql.existingConnection conn
+        |> Sql.query "SELECT * FROM category WHERE web_log_id = @webLogId"
+        |> Sql.parameters [ webLogIdParam webLogId ]
+        |> Sql.executeAsync Map.toCategory
+    
+    
+    /// Delete a category
+    let delete catId webLogId = backgroundTask {
+        match! findById catId webLogId with
+        | Some cat ->
+            // Reassign any children to the category's parent category
+            let  parentParam = "@parentId", Sql.string (CategoryId.toString catId)
+            let! hasChildren =
+                Sql.existingConnection conn
+                |> Sql.query $"SELECT EXISTS (SELECT 1 FROM category WHERE parent_id = @parentId) AS {existsName}"
+                |> Sql.parameters [ parentParam ]
+                |> Sql.executeRowAsync Map.toExists
+            if hasChildren then
+                let! _ =
+                    Sql.existingConnection conn
+                    |> Sql.query "UPDATE category SET parent_id = @newParentId WHERE parent_id = @parentId"
+                    |> Sql.parameters
+                        [   parentParam
+                            "@newParentId", Sql.stringOrNone (cat.ParentId |> Option.map CategoryId.toString) ]
+                    |> Sql.executeNonQueryAsync
+                ()
+            // Delete the category off all posts where it is assigned, and the category itself
+            let! _ =
+                Sql.existingConnection conn
+                |> Sql.query
+                    "DELETE FROM post_category
+                      WHERE category_id = @id
+                        AND post_id IN (SELECT id FROM post WHERE web_log_id = @webLogId);
+                     DELETE FROM category WHERE id = @id"
+                |> Sql.parameters [ "@id", Sql.string (CategoryId.toString catId); webLogIdParam webLogId ]
+                |> Sql.executeNonQueryAsync
+            return if hasChildren then ReassignedChildCategories else CategoryDeleted
+        | None -> return CategoryNotFound
+    }
+    
+    /// The INSERT statement for a category
+    let catInsert =
+        "INSERT INTO category (
+            id, web_log_id, name, slug, description, parent_id
+        ) VALUES (
+            @id, @webLogId, @name, @slug, @description, @parentId
+        )"
+    
+    /// Create parameters for a category insert / update
+    let catParameters (cat : Category) = [
+        webLogIdParam cat.WebLogId
+        "@id",          Sql.string       (CategoryId.toString cat.Id)
+        "@name",        Sql.string       cat.Name
+        "@slug",        Sql.string       cat.Slug
+        "@description", Sql.stringOrNone cat.Description
+        "@parentId",    Sql.stringOrNone (cat.ParentId |> Option.map CategoryId.toString)
+    ]
+
+    /// Save a category
+    let save cat = backgroundTask {
+        let! _ =
+            Sql.existingConnection conn
+            |> Sql.query $"
+                {catInsert} ON CONFLICT (id) DO UPDATE
+                SET name        = EXCLUDED.name,
+                    slug        = EXCLUDED.slug,
+                    description = EXCLUDED.description,
+                    parent_id   = EXCLUDED.parent_id"
+            |> Sql.parameters (catParameters cat)
+            |> Sql.executeNonQueryAsync
+        ()
+    }
+    
+    /// Restore categories from a backup
+    let restore cats = backgroundTask {
+        let! _ =
+            Sql.existingConnection conn
+            |> Sql.executeTransactionAsync [
+                catInsert, cats |> List.map catParameters
+            ]
+        ()
+    }
+    
+    interface ICategoryData with
+        member _.Add cat = save cat
+        member _.CountAll webLogId = countAll webLogId
+        member _.CountTopLevel webLogId = countTopLevel webLogId
+        member _.FindAllForView webLogId = findAllForView webLogId
+        member _.FindById catId webLogId = findById catId webLogId
+        member _.FindByWebLog webLogId = findByWebLog webLogId
+        member _.Delete catId webLogId = delete catId webLogId
+        member _.Restore cats = restore cats
+        member _.Update cat = save cat

src/MyWebLog.Data/Postgres/PostgresHelpers.fs

@@ -0,0 +1,240 @@
+/// Helper functions for the PostgreSQL data implementation
+[<AutoOpen>]
+module MyWebLog.Data.Postgres.PostgresHelpers
+
+open System
+open System.Threading.Tasks
+open MyWebLog
+open MyWebLog.Data
+open Newtonsoft.Json
+open NodaTime
+open Npgsql
+open Npgsql.FSharp
+
+/// Create a SQL parameter for the web log ID
+let webLogIdParam webLogId =
+    "@webLogId", Sql.string (WebLogId.toString webLogId)
+
+/// The name of the field to select to be able to use Map.toCount
+let countName = "the_count"
+
+/// The name of the field to select to be able to use Map.toExists
+let existsName = "does_exist"
+
+/// Create the SQL and parameters for an IN clause
+let inClause<'T> colNameAndPrefix paramName (valueFunc: 'T -> string) (items : 'T list) =
+    if List.isEmpty items then "", []
+    else
+        let mutable idx = 0
+        items
+        |> List.skip 1
+        |> List.fold (fun (itemS, itemP) it ->
+            idx <- idx + 1
+            $"{itemS}, @%s{paramName}{idx}", ($"@%s{paramName}{idx}", Sql.string (valueFunc it)) :: itemP)
+            (Seq.ofList items
+             |> Seq.map (fun it ->
+                 $"%s{colNameAndPrefix} IN (@%s{paramName}0", [ $"@%s{paramName}0", Sql.string (valueFunc it) ])
+             |> Seq.head)
+        |> function sql, ps -> $"{sql})", ps
+
+/// Create the SQL and parameters for the array equivalent of an IN clause
+let arrayInClause<'T> name (valueFunc : 'T -> string) (items : 'T list) =
+    if List.isEmpty items then "TRUE = FALSE", []
+    else
+        let mutable idx = 0
+        items
+        |> List.skip 1
+        |> List.fold (fun (itemS, itemP) it ->
+            idx <- idx + 1
+            $"{itemS} OR %s{name} && ARRAY[@{name}{idx}]",
+            ($"@{name}{idx}", Sql.string (valueFunc it)) :: itemP)
+            (Seq.ofList items
+             |> Seq.map (fun it ->
+                 $"{name} && ARRAY[@{name}0]", [ $"@{name}0", Sql.string (valueFunc it) ])
+             |> Seq.head)
+    
+/// Get the first result of the given query
+let tryHead<'T> (query : Task<'T list>) = backgroundTask {
+    let! results = query
+    return List.tryHead results
+}
+
+/// Create a parameter for a non-standard type
+let typedParam<'T> name (it : 'T) =
+    $"@%s{name}", Sql.parameter (NpgsqlParameter ($"@{name}", it))
+
+/// Create a parameter for a possibly-missing non-standard type
+let optParam<'T> name (it : 'T option) =
+    let p = NpgsqlParameter ($"@%s{name}", if Option.isSome it then box it.Value else DBNull.Value)
+    p.ParameterName, Sql.parameter p
+
+/// Mapping functions for SQL queries
+module Map =
+    
+    /// Map an id field to a category ID
+    let toCategoryId (row : RowReader) =
+        CategoryId (row.string "id")
+    
+    /// Create a category from the current row
+    let toCategory (row : RowReader) : Category =
+        {   Id          = toCategoryId row
+            WebLogId    = row.string       "web_log_id" |> WebLogId
+            Name        = row.string       "name"
+            Slug        = row.string       "slug"
+            Description = row.stringOrNone "description"
+            ParentId    = row.stringOrNone "parent_id"  |> Option.map CategoryId
+        }
+
+    /// Get a count from a row
+    let toCount (row : RowReader) =
+        row.int countName
+    
+    /// Create a custom feed from the current row
+    let toCustomFeed (ser : JsonSerializer) (row : RowReader) : CustomFeed =
+        {   Id      = row.string       "id"      |> CustomFeedId
+            Source  = row.string       "source"  |> CustomFeedSource.parse
+            Path    = row.string       "path"    |> Permalink
+            Podcast = row.stringOrNone "podcast" |> Option.map (Utils.deserialize ser)
+        }
+    
+    /// Get a true/false value as to whether an item exists
+    let toExists (row : RowReader) =
+        row.bool existsName
+    
+    /// Create a meta item from the current row
+    let toMetaItem (row : RowReader) : MetaItem =
+        {   Name  = row.string "name"
+            Value = row.string "value"
+        }
+    
+    /// Create a permalink from the current row
+    let toPermalink (row : RowReader) =
+        Permalink (row.string "permalink")
+    
+    /// Create a page from the current row
+    let toPage (ser : JsonSerializer) (row : RowReader) : Page =
+        { Page.empty with
+            Id              = row.string              "id"         |> PageId
+            WebLogId        = row.string              "web_log_id" |> WebLogId
+            AuthorId        = row.string              "author_id"  |> WebLogUserId
+            Title           = row.string              "title"
+            Permalink       = toPermalink row
+            PriorPermalinks = row.stringArray         "prior_permalinks" |> Array.map Permalink |> List.ofArray
+            PublishedOn     = row.fieldValue<Instant> "published_on"
+            UpdatedOn       = row.fieldValue<Instant> "updated_on"
+            IsInPageList    = row.bool                "is_in_page_list"
+            Template        = row.stringOrNone        "template"
+            Text            = row.string              "page_text"
+            Metadata        = row.stringOrNone        "meta_items"
+                              |> Option.map (Utils.deserialize ser)
+                              |> Option.defaultValue []
+        }
+    
+    /// Create a post from the current row
+    let toPost (ser : JsonSerializer) (row : RowReader) : Post =
+        { Post.empty with
+            Id              = row.string                    "id"         |> PostId
+            WebLogId        = row.string                    "web_log_id" |> WebLogId
+            AuthorId        = row.string                    "author_id"  |> WebLogUserId
+            Status          = row.string                    "status"     |> PostStatus.parse
+            Title           = row.string                    "title"
+            Permalink       = toPermalink row
+            PriorPermalinks = row.stringArray               "prior_permalinks" |> Array.map Permalink |> List.ofArray
+            PublishedOn     = row.fieldValueOrNone<Instant> "published_on"
+            UpdatedOn       = row.fieldValue<Instant>       "updated_on"
+            Template        = row.stringOrNone              "template"
+            Text            = row.string                    "post_text"
+            Episode         = row.stringOrNone              "episode"          |> Option.map (Utils.deserialize ser)
+            CategoryIds     = row.stringArrayOrNone         "category_ids"
+                              |> Option.map (Array.map CategoryId >> List.ofArray)
+                              |> Option.defaultValue []
+            Tags            = row.stringArrayOrNone         "tags"
+                              |> Option.map List.ofArray
+                              |> Option.defaultValue []
+            Metadata        = row.stringOrNone              "meta_items"
+                              |> Option.map (Utils.deserialize ser)
+                              |> Option.defaultValue []
+        }
+    
+    /// Create a revision from the current row
+    let toRevision (row : RowReader) : Revision =
+        {   AsOf = row.fieldValue<Instant> "as_of"
+            Text = row.string              "revision_text" |> MarkupText.parse
+        }
+    
+    /// Create a tag mapping from the current row
+    let toTagMap (row : RowReader) : TagMap =
+        {   Id       = row.string "id"         |> TagMapId
+            WebLogId = row.string "web_log_id" |> WebLogId
+            Tag      = row.string "tag"
+            UrlValue = row.string "url_value"
+        }
+    
+    /// Create a theme from the current row (excludes templates)
+    let toTheme (row : RowReader) : Theme =
+        { Theme.empty with
+            Id      = row.string "id" |> ThemeId
+            Name    = row.string "name"
+            Version = row.string "version"
+        }
+    
+    /// Create a theme asset from the current row
+    let toThemeAsset includeData (row : RowReader) : ThemeAsset =
+        {   Id        = ThemeAssetId (ThemeId (row.string "theme_id"), row.string "path")
+            UpdatedOn = row.fieldValue<Instant> "updated_on"
+            Data      = if includeData then row.bytea "data" else [||]
+        }
+    
+    /// Create a theme template from the current row
+    let toThemeTemplate includeText (row : RowReader) : ThemeTemplate =
+        {   Name = row.string "name"
+            Text = if includeText then row.string "template" else ""
+        }
+
+    /// Create an uploaded file from the current row
+    let toUpload includeData (row : RowReader) : Upload =
+        {   Id        = row.string              "id"         |> UploadId
+            WebLogId  = row.string              "web_log_id" |> WebLogId
+            Path      = row.string              "path"       |> Permalink
+            UpdatedOn = row.fieldValue<Instant> "updated_on"
+            Data      = if includeData then row.bytea "data" else [||]
+        }
+    
+    /// Create a web log from the current row
+    let toWebLog (row : RowReader) : WebLog =
+        {   Id           = row.string       "id"             |> WebLogId
+            Name         = row.string       "name"
+            Slug         = row.string       "slug"
+            Subtitle     = row.stringOrNone "subtitle"
+            DefaultPage  = row.string       "default_page"
+            PostsPerPage = row.int          "posts_per_page"
+            ThemeId      = row.string       "theme_id"       |> ThemeId
+            UrlBase      = row.string       "url_base"
+            TimeZone     = row.string       "time_zone"
+            AutoHtmx     = row.bool         "auto_htmx"
+            Uploads      = row.string       "uploads"        |> UploadDestination.parse
+            Rss          = {
+                IsFeedEnabled     = row.bool         "is_feed_enabled"
+                FeedName          = row.string       "feed_name"
+                ItemsInFeed       = row.intOrNone    "items_in_feed"
+                IsCategoryEnabled = row.bool         "is_category_enabled"
+                IsTagEnabled      = row.bool         "is_tag_enabled"
+                Copyright         = row.stringOrNone "copyright"
+                CustomFeeds       = []
+            }
+        }
+    
+    /// Create a web log user from the current row
+    let toWebLogUser (row : RowReader) : WebLogUser =
+        {   Id            = row.string                    "id"             |> WebLogUserId
+            WebLogId      = row.string                    "web_log_id"     |> WebLogId
+            Email         = row.string                    "email"
+            FirstName     = row.string                    "first_name"
+            LastName      = row.string                    "last_name"
+            PreferredName = row.string                    "preferred_name"
+            PasswordHash  = row.string                    "password_hash"
+            Url           = row.stringOrNone              "url"
+            AccessLevel   = row.string                    "access_level"   |> AccessLevel.parse
+            CreatedOn     = row.fieldValue<Instant>       "created_on"
+            LastSeenOn    = row.fieldValueOrNone<Instant> "last_seen_on"
+        }

src/MyWebLog.Data/Postgres/PostgresPageData.fs

@@ -0,0 +1,281 @@
+namespace MyWebLog.Data.Postgres
+
+open MyWebLog
+open MyWebLog.Data
+open Newtonsoft.Json
+open Npgsql
+open Npgsql.FSharp
+
+/// PostgreSQL myWebLog page data implementation        
+type PostgresPageData (conn : NpgsqlConnection, ser : JsonSerializer) =
+    
+    // SUPPORT FUNCTIONS
+    
+    /// Append revisions and permalinks to a page
+    let appendPageRevisions (page : Page) = backgroundTask {
+        let! revisions =
+            Sql.existingConnection conn
+            |> Sql.query "SELECT as_of, revision_text FROM page_revision WHERE page_id = @pageId ORDER BY as_of DESC"
+            |> Sql.parameters [ "@pageId", Sql.string (PageId.toString page.Id) ]
+            |> Sql.executeAsync Map.toRevision
+        return { page with Revisions = revisions }
+    }
+    
+    /// Shorthand to map to a page
+    let toPage = Map.toPage ser
+    
+    /// Return a page with no text or revisions
+    let pageWithoutText row =
+        { toPage row with Text = "" }
+    
+    /// The INSERT statement for a page revision
+    let revInsert = "INSERT INTO page_revision VALUES (@pageId, @asOf, @text)"
+    
+    /// Parameters for a revision INSERT statement
+    let revParams pageId rev = [
+        typedParam "asOf" rev.AsOf
+        "@pageId", Sql.string (PageId.toString pageId)
+        "@text",   Sql.string (MarkupText.toString rev.Text)
+    ]
+    
+    /// Update a page's revisions
+    let updatePageRevisions pageId oldRevs newRevs = backgroundTask {
+        let toDelete, toAdd = Utils.diffRevisions oldRevs newRevs
+        if not (List.isEmpty toDelete) || not (List.isEmpty toAdd) then
+            let! _ =
+                Sql.existingConnection conn
+                |> Sql.executeTransactionAsync [
+                    if not (List.isEmpty toDelete) then
+                        "DELETE FROM page_revision WHERE page_id = @pageId AND as_of = @asOf",
+                        toDelete
+                        |> List.map (fun it -> [
+                            "@pageId", Sql.string (PageId.toString pageId)
+                            typedParam "asOf" it.AsOf
+                        ])
+                    if not (List.isEmpty toAdd) then
+                        revInsert, toAdd |> List.map (revParams pageId)
+                ]
+            ()
+    }
+    
+    /// Does the given page exist?
+    let pageExists pageId webLogId =
+        Sql.existingConnection conn
+        |> Sql.query $"SELECT EXISTS (SELECT 1 FROM page WHERE id = @id AND web_log_id = @webLogId) AS {existsName}"
+        |> Sql.parameters [ "@id", Sql.string (PageId.toString pageId); webLogIdParam webLogId ]
+        |> Sql.executeRowAsync Map.toExists
+    
+    // IMPLEMENTATION FUNCTIONS
+    
+    /// Get all pages for a web log (without text, revisions, prior permalinks, or metadata)
+    let all webLogId =
+        Sql.existingConnection conn
+        |> Sql.query "SELECT * FROM page WHERE web_log_id = @webLogId ORDER BY LOWER(title)"
+        |> Sql.parameters [ webLogIdParam webLogId ]
+        |> Sql.executeAsync pageWithoutText
+    
+    /// Count all pages for the given web log
+    let countAll webLogId =
+        Sql.existingConnection conn
+        |> Sql.query $"SELECT COUNT(id) AS {countName} FROM page WHERE web_log_id = @webLogId"
+        |> Sql.parameters [ webLogIdParam webLogId ]
+        |> Sql.executeRowAsync Map.toCount
+    
+    /// Count all pages shown in the page list for the given web log
+    let countListed webLogId =
+        Sql.existingConnection conn
+        |> Sql.query $"
+            SELECT COUNT(id) AS {countName}
+              FROM page
+             WHERE web_log_id      = @webLogId
+               AND is_in_page_list = TRUE"
+        |> Sql.parameters [ webLogIdParam webLogId ]
+        |> Sql.executeRowAsync Map.toCount
+    
+    /// Find a page by its ID (without revisions)
+    let findById pageId webLogId =
+        Sql.existingConnection conn
+        |> Sql.query "SELECT * FROM page WHERE id = @id AND web_log_id = @webLogId"
+        |> Sql.parameters [ "@id", Sql.string (PageId.toString pageId); webLogIdParam webLogId ]
+        |> Sql.executeAsync toPage
+        |> tryHead
+    
+    /// Find a complete page by its ID
+    let findFullById pageId webLogId = backgroundTask {
+        match! findById pageId webLogId with
+        | Some page ->
+            let! withMore = appendPageRevisions page
+            return Some withMore
+        | None -> return None
+    }
+    
+    /// Delete a page by its ID
+    let delete pageId webLogId = backgroundTask {
+        match! pageExists pageId webLogId with
+        | true ->
+            let! _ =
+                Sql.existingConnection conn
+                |> Sql.query
+                    "DELETE FROM page_revision WHERE page_id = @id;
+                     DELETE FROM page          WHERE id      = @id"
+                |> Sql.parameters [ "@id", Sql.string (PageId.toString pageId) ]
+                |> Sql.executeNonQueryAsync
+            return true
+        | false -> return false
+    }
+    
+    /// Find a page by its permalink for the given web log
+    let findByPermalink permalink webLogId =
+        Sql.existingConnection conn
+        |> Sql.query "SELECT * FROM page WHERE web_log_id = @webLogId AND permalink = @link"
+        |> Sql.parameters [ webLogIdParam webLogId; "@link", Sql.string (Permalink.toString permalink) ]
+        |> Sql.executeAsync toPage
+        |> tryHead
+    
+    /// Find the current permalink within a set of potential prior permalinks for the given web log
+    let findCurrentPermalink permalinks webLogId = backgroundTask {
+        if List.isEmpty permalinks then return None
+        else
+            let linkSql, linkParams = arrayInClause "prior_permalinks" Permalink.toString permalinks
+            return!
+                Sql.existingConnection conn
+                |> Sql.query $"SELECT permalink FROM page WHERE web_log_id = @webLogId AND ({linkSql})"
+                |> Sql.parameters (webLogIdParam webLogId :: linkParams)
+                |> Sql.executeAsync Map.toPermalink
+                |> tryHead
+    }
+    
+    /// Get all complete pages for the given web log
+    let findFullByWebLog webLogId = backgroundTask {
+        let! pages =
+            Sql.existingConnection conn
+            |> Sql.query "SELECT * FROM page WHERE web_log_id = @webLogId"
+            |> Sql.parameters [ webLogIdParam webLogId ]
+            |> Sql.executeAsync toPage
+        let! revisions =
+            Sql.existingConnection conn
+            |> Sql.query
+                "SELECT *
+                   FROM page_revision pr
+                        INNER JOIN page p ON p.id = pr.page_id
+                  WHERE p.web_log_id = @webLogId
+                  ORDER BY pr.as_of DESC"
+            |> Sql.parameters [ webLogIdParam webLogId ]
+            |> Sql.executeAsync (fun row -> PageId (row.string "page_id"), Map.toRevision row)
+        return
+            pages
+            |> List.map (fun it ->
+                { it with Revisions = revisions |> List.filter (fun r -> fst r = it.Id) |> List.map snd })
+    }
+    
+    /// Get all listed pages for the given web log (without revisions or text)
+    let findListed webLogId =
+        Sql.existingConnection conn
+        |> Sql.query "SELECT * FROM page WHERE web_log_id = @webLogId AND is_in_page_list = TRUE ORDER BY LOWER(title)"
+        |> Sql.parameters [ webLogIdParam webLogId ]
+        |> Sql.executeAsync pageWithoutText
+    
+    /// Get a page of pages for the given web log (without revisions)
+    let findPageOfPages webLogId pageNbr =
+        Sql.existingConnection conn
+        |> Sql.query
+            "SELECT *
+               FROM page
+              WHERE web_log_id = @webLogId
+              ORDER BY LOWER(title)
+              LIMIT @pageSize OFFSET @toSkip"
+        |> Sql.parameters [ webLogIdParam webLogId; "@pageSize", Sql.int 26; "@toSkip", Sql.int ((pageNbr - 1) * 25) ]
+        |> Sql.executeAsync toPage
+    
+    /// The INSERT statement for a page
+    let pageInsert =
+        "INSERT INTO page (
+            id, web_log_id, author_id, title, permalink, prior_permalinks, published_on, updated_on, is_in_page_list,
+            template, page_text, meta_items
+        ) VALUES (
+            @id, @webLogId, @authorId, @title, @permalink, @priorPermalinks, @publishedOn, @updatedOn, @isInPageList,
+            @template, @text, @metaItems
+        )"
+    
+    /// The parameters for saving a page
+    let pageParams (page : Page) = [
+        webLogIdParam page.WebLogId
+        "@id",              Sql.string       (PageId.toString page.Id)
+        "@authorId",        Sql.string       (WebLogUserId.toString page.AuthorId)
+        "@title",           Sql.string       page.Title
+        "@permalink",       Sql.string       (Permalink.toString page.Permalink)
+        "@isInPageList",    Sql.bool         page.IsInPageList
+        "@template",        Sql.stringOrNone page.Template
+        "@text",            Sql.string       page.Text
+        "@metaItems",       Sql.jsonb        (Utils.serialize ser page.Metadata)
+        "@priorPermalinks", Sql.stringArray  (page.PriorPermalinks |> List.map Permalink.toString |> Array.ofList)
+        typedParam "publishedOn" page.PublishedOn
+        typedParam "updatedOn"   page.UpdatedOn
+    ]
+
+    /// Restore pages from a backup
+    let restore (pages : Page list) = backgroundTask {
+        let revisions = pages |> List.collect (fun p -> p.Revisions |> List.map (fun r -> p.Id, r))
+        let! _ =
+            Sql.existingConnection conn
+            |> Sql.executeTransactionAsync [
+                pageInsert, pages     |> List.map pageParams
+                revInsert,  revisions |> List.map (fun (pageId, rev) -> revParams pageId rev)
+            ]
+        ()
+    }
+    
+    /// Save a page
+    let save (page : Page) = backgroundTask {
+        let! oldPage = findFullById page.Id page.WebLogId
+        let! _ =
+            Sql.existingConnection conn
+            |> Sql.query $"
+                {pageInsert} ON CONFLICT (id) DO UPDATE
+                SET author_id        = EXCLUDED.author_id,
+                    title            = EXCLUDED.title,
+                    permalink        = EXCLUDED.permalink,
+                    prior_permalinks = EXCLUDED.prior_permalinks,
+                    published_on     = EXCLUDED.published_on,
+                    updated_on       = EXCLUDED.updated_on,
+                    is_in_page_list  = EXCLUDED.is_in_page_list,
+                    template         = EXCLUDED.template,
+                    page_text        = EXCLUDED.page_text,
+                    meta_items       = EXCLUDED.meta_items"
+            |> Sql.parameters (pageParams page)
+            |> Sql.executeNonQueryAsync
+        do! updatePageRevisions page.Id (match oldPage with Some p -> p.Revisions | None -> []) page.Revisions
+        ()
+    }
+    
+    /// Update a page's prior permalinks
+    let updatePriorPermalinks pageId webLogId permalinks = backgroundTask {
+        match! pageExists pageId webLogId with
+        | true ->
+            let! _ =
+                Sql.existingConnection conn
+                |> Sql.query "UPDATE page SET prior_permalinks = @prior WHERE id = @id"
+                |> Sql.parameters
+                    [   "@id",    Sql.string      (PageId.toString pageId)
+                        "@prior", Sql.stringArray (permalinks |> List.map Permalink.toString |> Array.ofList) ]
+                |> Sql.executeNonQueryAsync
+            return true
+        | false -> return false
+    }
+    
+    interface IPageData with
+        member _.Add page = save page
+        member _.All webLogId = all webLogId
+        member _.CountAll webLogId = countAll webLogId
+        member _.CountListed webLogId = countListed webLogId
+        member _.Delete pageId webLogId = delete pageId webLogId
+        member _.FindById pageId webLogId = findById pageId webLogId
+        member _.FindByPermalink permalink webLogId = findByPermalink permalink webLogId
+        member _.FindCurrentPermalink permalinks webLogId = findCurrentPermalink permalinks webLogId
+        member _.FindFullById pageId webLogId = findFullById pageId webLogId
+        member _.FindFullByWebLog webLogId = findFullByWebLog webLogId
+        member _.FindListed webLogId = findListed webLogId
+        member _.FindPageOfPages webLogId pageNbr = findPageOfPages webLogId pageNbr
+        member _.Restore pages = restore pages
+        member _.Update page = save page
+        member _.UpdatePriorPermalinks pageId webLogId permalinks = updatePriorPermalinks pageId webLogId permalinks

src/MyWebLog.Data/Postgres/PostgresPostData.fs

@@ -0,0 +1,378 @@
+namespace MyWebLog.Data.Postgres
+
+open MyWebLog
+open MyWebLog.Data
+open Newtonsoft.Json
+open NodaTime
+open Npgsql
+open Npgsql.FSharp
+
+/// PostgreSQL myWebLog post data implementation        
+type PostgresPostData (conn : NpgsqlConnection, ser : JsonSerializer) =
+
+    // SUPPORT FUNCTIONS
+    
+    /// Append revisions to a post
+    let appendPostRevisions (post : Post) = backgroundTask {
+        let! revisions =
+            Sql.existingConnection conn
+            |> Sql.query "SELECT as_of, revision_text FROM post_revision WHERE post_id = @id ORDER BY as_of DESC"
+            |> Sql.parameters [ "@id", Sql.string (PostId.toString post.Id) ]
+            |> Sql.executeAsync Map.toRevision
+        return { post with Revisions = revisions }
+    }
+    
+    /// The SELECT statement for a post that will include category IDs
+    let selectPost =
+        "SELECT *, ARRAY(SELECT cat.category_id FROM post_category cat WHERE cat.post_id = p.id) AS category_ids
+           FROM post p"
+    
+    /// Shorthand for mapping to a post
+    let toPost = Map.toPost ser
+    
+    /// Return a post with no revisions, prior permalinks, or text
+    let postWithoutText row =
+        { toPost row with Text = "" }
+    
+    /// The INSERT statement for a post/category cross-reference
+    let catInsert = "INSERT INTO post_category VALUES (@postId, @categoryId)"
+    
+    /// Parameters for adding or updating a post/category cross-reference
+    let catParams postId cat = [
+        "@postId",    Sql.string (PostId.toString postId)
+        "categoryId", Sql.string (CategoryId.toString cat)
+    ]
+    
+    /// Update a post's assigned categories
+    let updatePostCategories postId oldCats newCats = backgroundTask {
+        let toDelete, toAdd = Utils.diffLists oldCats newCats CategoryId.toString
+        if not (List.isEmpty toDelete) || not (List.isEmpty toAdd) then
+            let! _ =
+                Sql.existingConnection conn
+                |> Sql.executeTransactionAsync [
+                    if not (List.isEmpty toDelete) then
+                        "DELETE FROM post_category WHERE post_id = @postId AND category_id = @categoryId",
+                        toDelete |> List.map (catParams postId)
+                    if not (List.isEmpty toAdd) then
+                        catInsert, toAdd |> List.map (catParams postId)
+                ]
+            ()
+    }
+    
+    /// The INSERT statement for a post revision
+    let revInsert = "INSERT INTO post_revision VALUES (@postId, @asOf, @text)"
+    
+    /// The parameters for adding a post revision
+    let revParams postId rev = [
+        typedParam "asOf" rev.AsOf
+        "@postId", Sql.string (PostId.toString postId)
+        "@text",   Sql.string (MarkupText.toString rev.Text)
+    ]
+    
+    /// Update a post's revisions
+    let updatePostRevisions postId oldRevs newRevs = backgroundTask {
+        let toDelete, toAdd = Utils.diffRevisions oldRevs newRevs
+        if not (List.isEmpty toDelete) || not (List.isEmpty toAdd) then
+            let! _ =
+                Sql.existingConnection conn
+                |> Sql.executeTransactionAsync [
+                    if not (List.isEmpty toDelete) then
+                        "DELETE FROM post_revision WHERE post_id = @postId AND as_of = @asOf",
+                        toDelete
+                        |> List.map (fun it -> [
+                            "@postId", Sql.string (PostId.toString postId)
+                            typedParam "asOf" it.AsOf
+                        ])
+                    if not (List.isEmpty toAdd) then
+                        revInsert, toAdd |> List.map (revParams postId)
+                ]
+            ()
+    }
+    
+    /// Does the given post exist?
+    let postExists postId webLogId =
+        Sql.existingConnection conn
+        |> Sql.query $"SELECT EXISTS (SELECT 1 FROM post WHERE id = @id AND web_log_id = @webLogId) AS {existsName}"
+        |> Sql.parameters [ "@id", Sql.string (PostId.toString postId); webLogIdParam webLogId ]
+        |> Sql.executeRowAsync Map.toExists
+    
+    // IMPLEMENTATION FUNCTIONS
+    
+    /// Count posts in a status for the given web log
+    let countByStatus status webLogId =
+        Sql.existingConnection conn
+        |> Sql.query $"SELECT COUNT(id) AS {countName} FROM post WHERE web_log_id = @webLogId AND status = @status"
+        |> Sql.parameters [ webLogIdParam webLogId; "@status", Sql.string (PostStatus.toString status) ]
+        |> Sql.executeRowAsync Map.toCount
+    
+    /// Find a post by its ID for the given web log (excluding revisions)
+    let findById postId webLogId = 
+        Sql.existingConnection conn
+        |> Sql.query $"{selectPost} WHERE id = @id AND web_log_id = @webLogId"
+        |> Sql.parameters [ "@id", Sql.string (PostId.toString postId); webLogIdParam webLogId ]
+        |> Sql.executeAsync toPost
+        |> tryHead
+    
+    /// Find a post by its permalink for the given web log (excluding revisions and prior permalinks)
+    let findByPermalink permalink webLogId =
+        Sql.existingConnection conn
+        |> Sql.query $"{selectPost} WHERE web_log_id = @webLogId AND permalink = @link"
+        |> Sql.parameters [ webLogIdParam webLogId; "@link", Sql.string (Permalink.toString permalink) ]
+        |> Sql.executeAsync toPost
+        |> tryHead
+    
+    /// Find a complete post by its ID for the given web log
+    let findFullById postId webLogId = backgroundTask {
+        match! findById postId webLogId with
+        | Some post ->
+            let! withRevisions = appendPostRevisions post
+            return Some withRevisions
+        | None -> return None
+    }
+    
+    /// Delete a post by its ID for the given web log
+    let delete postId webLogId = backgroundTask {
+        match! postExists postId webLogId with
+        | true ->
+            let! _ =
+                Sql.existingConnection conn
+                |> Sql.query
+                    "DELETE FROM post_revision WHERE post_id = @id;
+                     DELETE FROM post_category WHERE post_id = @id;
+                     DELETE FROM post          WHERE id      = @id"
+                |> Sql.parameters [ "@id", Sql.string (PostId.toString postId) ]
+                |> Sql.executeNonQueryAsync
+            return true
+        | false -> return false
+    }
+    
+    /// Find the current permalink from a list of potential prior permalinks for the given web log
+    let findCurrentPermalink permalinks webLogId = backgroundTask {
+        if List.isEmpty permalinks then return None
+        else
+            let linkSql, linkParams = arrayInClause "prior_permalinks" Permalink.toString permalinks
+            return!
+                Sql.existingConnection conn
+                |> Sql.query $"SELECT permalink FROM post WHERE web_log_id = @webLogId AND ({linkSql})"
+                |> Sql.parameters (webLogIdParam webLogId :: linkParams)
+                |> Sql.executeAsync Map.toPermalink
+                |> tryHead
+    }
+    
+    /// Get all complete posts for the given web log
+    let findFullByWebLog webLogId = backgroundTask {
+        let! posts =
+            Sql.existingConnection conn
+            |> Sql.query $"{selectPost} WHERE web_log_id = @webLogId"
+            |> Sql.parameters [ webLogIdParam webLogId ]
+            |> Sql.executeAsync toPost
+        let! revisions =
+            Sql.existingConnection conn
+            |> Sql.query
+                "SELECT *
+                   FROM post_revision pr
+                        INNER JOIN post p ON p.id = pr.post_id
+                  WHERE p.web_log_id = @webLogId
+                  ORDER BY as_of DESC"
+            |> Sql.parameters [ webLogIdParam webLogId ]
+            |> Sql.executeAsync (fun row -> PostId (row.string "post_id"), Map.toRevision row)
+        return
+            posts
+            |> List.map (fun it ->
+                { it with Revisions = revisions |> List.filter (fun r -> fst r = it.Id) |> List.map snd })
+    }
+    
+    /// Get a page of categorized posts for the given web log (excludes revisions)
+    let findPageOfCategorizedPosts webLogId categoryIds pageNbr postsPerPage =
+        let catSql, catParams = inClause "AND pc.category_id" "catId" CategoryId.toString categoryIds
+        Sql.existingConnection conn
+        |> Sql.query $"
+            {selectPost}
+                   INNER JOIN post_category pc ON pc.post_id = p.id
+             WHERE p.web_log_id = @webLogId
+               AND p.status     = @status
+               {catSql}
+             ORDER BY published_on DESC
+             LIMIT {postsPerPage + 1} OFFSET {(pageNbr - 1) * postsPerPage}"
+        |> Sql.parameters
+            [   webLogIdParam webLogId
+                "@status", Sql.string (PostStatus.toString Published)
+                yield! catParams   ]
+        |> Sql.executeAsync toPost
+    
+    /// Get a page of posts for the given web log (excludes text and revisions)
+    let findPageOfPosts webLogId pageNbr postsPerPage =
+        Sql.existingConnection conn
+        |> Sql.query $"
+            {selectPost}
+             WHERE web_log_id = @webLogId
+             ORDER BY published_on DESC NULLS FIRST, updated_on
+             LIMIT {postsPerPage + 1} OFFSET {(pageNbr - 1) * postsPerPage}"
+        |> Sql.parameters [ webLogIdParam webLogId ]
+        |> Sql.executeAsync postWithoutText
+    
+    /// Get a page of published posts for the given web log (excludes revisions)
+    let findPageOfPublishedPosts webLogId pageNbr postsPerPage =
+        Sql.existingConnection conn
+        |> Sql.query $"
+            {selectPost}
+             WHERE web_log_id = @webLogId
+               AND status     = @status
+             ORDER BY published_on DESC
+             LIMIT {postsPerPage + 1} OFFSET {(pageNbr - 1) * postsPerPage}"
+        |> Sql.parameters [ webLogIdParam webLogId; "@status", Sql.string (PostStatus.toString Published) ]
+        |> Sql.executeAsync toPost
+    
+    /// Get a page of tagged posts for the given web log (excludes revisions and prior permalinks)
+    let findPageOfTaggedPosts webLogId (tag : string) pageNbr postsPerPage =
+        Sql.existingConnection conn
+        |> Sql.query $"
+            {selectPost}
+             WHERE web_log_id =  @webLogId
+               AND status     =  @status
+               AND tags       && ARRAY[@tag]
+             ORDER BY published_on DESC
+             LIMIT {postsPerPage + 1} OFFSET {(pageNbr - 1) * postsPerPage}"
+        |> Sql.parameters
+            [   webLogIdParam webLogId
+                "@status", Sql.string (PostStatus.toString Published)
+                "@tag",    Sql.string tag
+            ]
+        |> Sql.executeAsync toPost
+    
+    /// Find the next newest and oldest post from a publish date for the given web log
+    let findSurroundingPosts webLogId (publishedOn : Instant) = backgroundTask {
+        let queryParams () = Sql.parameters [
+            webLogIdParam webLogId
+            typedParam "publishedOn" publishedOn
+            "@status", Sql.string (PostStatus.toString Published)
+        ]
+        let! older =
+            Sql.existingConnection conn
+            |> Sql.query $"
+                {selectPost}
+                 WHERE web_log_id   = @webLogId
+                   AND status       = @status
+                   AND published_on < @publishedOn
+                 ORDER BY published_on DESC
+                 LIMIT 1"
+            |> queryParams ()
+            |> Sql.executeAsync toPost
+        let! newer =
+            Sql.existingConnection conn
+            |> Sql.query $"
+                {selectPost}
+                 WHERE web_log_id   = @webLogId
+                   AND status       = @status
+                   AND published_on > @publishedOn
+                 ORDER BY published_on
+                 LIMIT 1"
+            |> queryParams ()
+            |> Sql.executeAsync toPost
+        return List.tryHead older, List.tryHead newer
+    }
+    
+    /// The INSERT statement for a post
+    let postInsert =
+        "INSERT INTO post (
+            id, web_log_id, author_id, status, title, permalink, prior_permalinks, published_on, updated_on,
+            template, post_text, tags, meta_items, episode
+        ) VALUES (
+            @id, @webLogId, @authorId, @status, @title, @permalink, @priorPermalinks, @publishedOn, @updatedOn,
+            @template, @text, @tags, @metaItems, @episode
+        )"
+    
+    /// The parameters for saving a post
+    let postParams (post : Post) = [
+        webLogIdParam post.WebLogId
+        "@id",              Sql.string       (PostId.toString post.Id)
+        "@authorId",        Sql.string       (WebLogUserId.toString post.AuthorId)
+        "@status",          Sql.string       (PostStatus.toString post.Status)
+        "@title",           Sql.string       post.Title
+        "@permalink",       Sql.string       (Permalink.toString post.Permalink)
+        "@template",        Sql.stringOrNone post.Template
+        "@text",            Sql.string       post.Text
+        "@priorPermalinks", Sql.stringArray  (post.PriorPermalinks |> List.map Permalink.toString |> Array.ofList)
+        "@episode",         Sql.jsonbOrNone  (post.Episode |> Option.map (Utils.serialize ser))
+        "@tags", Sql.stringArrayOrNone (if List.isEmpty post.Tags then None else Some (Array.ofList post.Tags))
+        "@metaItems",
+            if List.isEmpty post.Metadata then None else Some (Utils.serialize ser post.Metadata)
+            |> Sql.jsonbOrNone
+        optParam   "publishedOn" post.PublishedOn
+        typedParam "updatedOn"   post.UpdatedOn
+    ]
+    
+    /// Save a post
+    let save (post : Post) = backgroundTask {
+        let! oldPost = findFullById post.Id post.WebLogId
+        let! _ =
+            Sql.existingConnection conn
+            |> Sql.query $"
+                {postInsert} ON CONFLICT (id) DO UPDATE
+                SET author_id        = EXCLUDED.author_id,
+                    status           = EXCLUDED.status,
+                    title            = EXCLUDED.title,
+                    permalink        = EXCLUDED.permalink,
+                    prior_permalinks = EXCLUDED.prior_permalinks,
+                    published_on     = EXCLUDED.published_on,
+                    updated_on       = EXCLUDED.updated_on,
+                    template         = EXCLUDED.template,
+                    post_text        = EXCLUDED.post_text,
+                    tags             = EXCLUDED.tags,
+                    meta_items       = EXCLUDED.meta_items,
+                    episode          = EXCLUDED.episode"
+            |> Sql.parameters (postParams post)
+            |> Sql.executeNonQueryAsync
+        do! updatePostCategories post.Id (match oldPost with Some p -> p.CategoryIds | None -> []) post.CategoryIds
+        do! updatePostRevisions  post.Id (match oldPost with Some p -> p.Revisions   | None -> []) post.Revisions
+    }
+    
+    /// Restore posts from a backup
+    let restore posts = backgroundTask {
+        let cats      = posts |> List.collect (fun p -> p.CategoryIds |> List.map (fun c -> p.Id, c))
+        let revisions = posts |> List.collect (fun p -> p.Revisions   |> List.map (fun r -> p.Id, r))
+        let! _ =
+            Sql.existingConnection conn
+            |> Sql.executeTransactionAsync [
+                postInsert, posts     |> List.map postParams
+                catInsert,  cats      |> List.map (fun (postId, catId) -> catParams postId catId)
+                revInsert,  revisions |> List.map (fun (postId, rev)   -> revParams postId rev)
+            ]
+        ()
+    }
+    
+    /// Update prior permalinks for a post
+    let updatePriorPermalinks postId webLogId permalinks = backgroundTask {
+        match! postExists postId webLogId with
+        | true ->
+            let! _ =
+                Sql.existingConnection conn
+                |> Sql.query "UPDATE post SET prior_permalinks = @prior WHERE id = @id"
+                |> Sql.parameters
+                    [   "@id",    Sql.string      (PostId.toString postId)
+                        "@prior", Sql.stringArray (permalinks |> List.map Permalink.toString |> Array.ofList) ]
+                |> Sql.executeNonQueryAsync
+            return true
+        | false -> return false
+    }
+    
+    interface IPostData with
+        member _.Add post = save post
+        member _.CountByStatus status webLogId = countByStatus status webLogId
+        member _.Delete postId webLogId = delete postId webLogId
+        member _.FindById postId webLogId = findById postId webLogId
+        member _.FindByPermalink permalink webLogId = findByPermalink permalink webLogId
+        member _.FindCurrentPermalink permalinks webLogId = findCurrentPermalink permalinks webLogId
+        member _.FindFullById postId webLogId = findFullById postId webLogId
+        member _.FindFullByWebLog webLogId = findFullByWebLog webLogId
+        member _.FindPageOfCategorizedPosts webLogId categoryIds pageNbr postsPerPage =
+            findPageOfCategorizedPosts webLogId categoryIds pageNbr postsPerPage
+        member _.FindPageOfPosts webLogId pageNbr postsPerPage = findPageOfPosts webLogId pageNbr postsPerPage
+        member _.FindPageOfPublishedPosts webLogId pageNbr postsPerPage =
+            findPageOfPublishedPosts webLogId pageNbr postsPerPage
+        member _.FindPageOfTaggedPosts webLogId tag pageNbr postsPerPage =
+            findPageOfTaggedPosts webLogId tag pageNbr postsPerPage
+        member _.FindSurroundingPosts webLogId publishedOn = findSurroundingPosts webLogId publishedOn
+        member _.Restore posts = restore posts
+        member _.Update post = save post
+        member _.UpdatePriorPermalinks postId webLogId permalinks = updatePriorPermalinks postId webLogId permalinks

src/MyWebLog.Data/Postgres/PostgresTagMapData.fs

@@ -0,0 +1,109 @@
+namespace MyWebLog.Data.Postgres
+
+open MyWebLog
+open MyWebLog.Data
+open Npgsql
+open Npgsql.FSharp
+
+/// PostgreSQL myWebLog tag mapping data implementation        
+type PostgresTagMapData (conn : NpgsqlConnection) =
+
+    /// Find a tag mapping by its ID for the given web log
+    let findById tagMapId webLogId =
+        Sql.existingConnection conn
+        |> Sql.query "SELECT * FROM tag_map WHERE id = @id AND web_log_id = @webLogId"
+        |> Sql.parameters [ "@id", Sql.string (TagMapId.toString tagMapId); webLogIdParam webLogId ]
+        |> Sql.executeAsync Map.toTagMap
+        |> tryHead
+    
+    /// Delete a tag mapping for the given web log
+    let delete tagMapId webLogId = backgroundTask {
+        let idParams = [ "@id", Sql.string (TagMapId.toString tagMapId) ]
+        let! exists =
+            Sql.existingConnection conn
+            |> Sql.query $"
+                SELECT EXISTS
+                    (SELECT 1 FROM tag_map WHERE id = @id AND web_log_id = @webLogId)
+                  AS {existsName}"
+            |> Sql.parameters (webLogIdParam webLogId :: idParams)
+            |> Sql.executeRowAsync Map.toExists
+        if exists then
+            let! _ =
+                Sql.existingConnection conn
+                |> Sql.query "DELETE FROM tag_map WHERE id = @id"
+                |> Sql.parameters idParams
+                |> Sql.executeNonQueryAsync
+            return true
+        else return false
+    }
+    
+    /// Find a tag mapping by its URL value for the given web log
+    let findByUrlValue urlValue webLogId =
+        Sql.existingConnection conn
+        |> Sql.query "SELECT * FROM tag_map WHERE web_log_id = @webLogId AND url_value = @urlValue"
+        |> Sql.parameters [ webLogIdParam webLogId; "@urlValue", Sql.string urlValue ]
+        |> Sql.executeAsync Map.toTagMap
+        |> tryHead
+    
+    /// Get all tag mappings for the given web log
+    let findByWebLog webLogId =
+        Sql.existingConnection conn
+        |> Sql.query "SELECT * FROM tag_map WHERE web_log_id = @webLogId ORDER BY tag"
+        |> Sql.parameters [ webLogIdParam webLogId ]
+        |> Sql.executeAsync Map.toTagMap
+    
+    /// Find any tag mappings in a list of tags for the given web log
+    let findMappingForTags tags webLogId =
+        let tagSql, tagParams = inClause "AND tag" "tag" id tags
+        Sql.existingConnection conn
+        |> Sql.query $"SELECT * FROM tag_map WHERE web_log_id = @webLogId {tagSql}"
+        |> Sql.parameters (webLogIdParam webLogId :: tagParams)
+        |> Sql.executeAsync Map.toTagMap
+    
+    /// The INSERT statement for a tag mapping
+    let tagMapInsert =
+        "INSERT INTO tag_map (
+            id, web_log_id, tag, url_value
+        ) VALUES (
+            @id, @webLogId, @tag, @urlValue
+        )"
+    
+    /// The parameters for saving a tag mapping
+    let tagMapParams (tagMap : TagMap) = [
+        webLogIdParam tagMap.WebLogId
+        "@id",       Sql.string (TagMapId.toString tagMap.Id)
+        "@tag",      Sql.string tagMap.Tag
+        "@urlValue", Sql.string tagMap.UrlValue
+    ]
+    
+    /// Save a tag mapping
+    let save tagMap = backgroundTask {
+        let! _ =
+            Sql.existingConnection conn
+            |> Sql.query $"
+                {tagMapInsert} ON CONFLICT (id) DO UPDATE
+                SET tag       = EXCLUDED.tag,
+                    url_value = EXCLUDED.url_value"
+            |> Sql.parameters (tagMapParams tagMap)
+            |> Sql.executeNonQueryAsync
+        ()
+    }
+    
+    /// Restore tag mappings from a backup
+    let restore tagMaps = backgroundTask {
+        let! _ =
+            Sql.existingConnection conn
+            |> Sql.executeTransactionAsync [
+                tagMapInsert, tagMaps |> List.map tagMapParams
+            ]
+        ()
+    }
+    
+    interface ITagMapData with
+        member _.Delete tagMapId webLogId = delete tagMapId webLogId
+        member _.FindById tagMapId webLogId = findById tagMapId webLogId
+        member _.FindByUrlValue urlValue webLogId = findByUrlValue urlValue webLogId
+        member _.FindByWebLog webLogId = findByWebLog webLogId
+        member _.FindMappingForTags tags webLogId = findMappingForTags tags webLogId
+        member _.Save tagMap = save tagMap
+        member _.Restore tagMaps = restore tagMaps

src/MyWebLog.Data/Postgres/PostgresThemeData.fs

@@ -0,0 +1,207 @@
+namespace MyWebLog.Data.Postgres
+
+open MyWebLog
+open MyWebLog.Data
+open Npgsql
+open Npgsql.FSharp
+
+/// PostreSQL myWebLog theme data implementation        
+type PostgresThemeData (conn : NpgsqlConnection) =
+    
+    /// Retrieve all themes (except 'admin'; excludes template text)
+    let all () = backgroundTask {
+        let! themes =
+            Sql.existingConnection conn
+            |> Sql.query "SELECT * FROM theme WHERE id <> 'admin' ORDER BY id"
+            |> Sql.executeAsync Map.toTheme
+        let! templates =
+            Sql.existingConnection conn
+            |> Sql.query "SELECT name, theme_id FROM theme_template WHERE theme_id <> 'admin' ORDER BY name"
+            |> Sql.executeAsync (fun row -> ThemeId (row.string "theme_id"), Map.toThemeTemplate false row)
+        return
+            themes
+            |> List.map (fun t ->
+                { t with Templates = templates |> List.filter (fun tt -> fst tt = t.Id) |> List.map snd })
+    }
+    
+    /// Does a given theme exist?
+    let exists themeId =
+        Sql.existingConnection conn
+        |> Sql.query "SELECT EXISTS (SELECT 1 FROM theme WHERE id = @id) AS does_exist"
+        |> Sql.parameters [ "@id", Sql.string (ThemeId.toString themeId) ]
+        |> Sql.executeRowAsync Map.toExists
+    
+    /// Find a theme by its ID
+    let findById themeId = backgroundTask {
+        let themeIdParam = [ "@id", Sql.string (ThemeId.toString themeId) ]
+        let! theme =
+            Sql.existingConnection conn
+            |> Sql.query "SELECT * FROM theme WHERE id = @id"
+            |> Sql.parameters themeIdParam
+            |> Sql.executeAsync Map.toTheme
+            |> tryHead
+        if Option.isSome theme then
+            let! templates =
+                Sql.existingConnection conn
+                |> Sql.query "SELECT * FROM theme_template WHERE theme_id = @id"
+                |> Sql.parameters themeIdParam
+                |> Sql.executeAsync (Map.toThemeTemplate true)
+            return Some { theme.Value with Templates = templates }
+        else return None
+    }
+    
+    /// Find a theme by its ID (excludes the text of templates)
+    let findByIdWithoutText themeId = backgroundTask {
+        match! findById themeId with
+        | Some theme ->
+            return Some {
+                theme with Templates = theme.Templates |> List.map (fun t -> { t with Text = "" })
+            }
+        | None -> return None
+    }
+    
+    /// Delete a theme by its ID
+    let delete themeId = backgroundTask {
+        let idParams = [ "@id", Sql.string (ThemeId.toString themeId) ]
+        let! exists =
+            Sql.existingConnection conn
+            |> Sql.query $"SELECT EXISTS (SELECT 1 FROM theme WHERE id = @id) AS {existsName}"
+            |> Sql.parameters idParams
+            |> Sql.executeRowAsync Map.toExists
+        if exists then
+            let! _ =
+                Sql.existingConnection conn
+                |> Sql.query
+                    "DELETE FROM theme_asset    WHERE theme_id = @id;
+                     DELETE FROM theme_template WHERE theme_id = @id;
+                     DELETE FROM theme          WHERE id       = @id"
+                |> Sql.parameters idParams
+                |> Sql.executeNonQueryAsync
+            return true
+        else return false
+    }
+    
+    /// Save a theme
+    let save (theme : Theme) = backgroundTask {
+        let! oldTheme     = findById theme.Id
+        let  themeIdParam = Sql.string (ThemeId.toString theme.Id)
+        let! _ =
+            Sql.existingConnection conn
+            |> Sql.query
+                "INSERT INTO theme VALUES (@id, @name, @version)
+                 ON CONFLICT (id) DO UPDATE
+                 SET name    = EXCLUDED.name,
+                     version = EXCLUDED.version"
+            |> Sql.parameters
+                [   "@id",      themeIdParam
+                    "@name",    Sql.string theme.Name
+                    "@version", Sql.string theme.Version ]
+            |> Sql.executeNonQueryAsync
+        
+        let toDelete, _ =
+            Utils.diffLists (oldTheme |> Option.map (fun t -> t.Templates) |> Option.defaultValue [])
+                            theme.Templates (fun t -> t.Name)
+        let toAddOrUpdate =
+            theme.Templates
+            |> List.filter (fun t -> not (toDelete |> List.exists (fun d -> d.Name = t.Name)))
+        
+        if not (List.isEmpty toDelete) || not (List.isEmpty toAddOrUpdate) then
+            let! _ =
+                Sql.existingConnection conn
+                |> Sql.executeTransactionAsync [
+                    if not (List.isEmpty toDelete) then
+                        "DELETE FROM theme_template WHERE theme_id = @themeId AND name = @name",
+                        toDelete |> List.map (fun tmpl -> [ "@themeId", themeIdParam; "@name", Sql.string tmpl.Name ])
+                    if not (List.isEmpty toAddOrUpdate) then
+                        "INSERT INTO theme_template VALUES (@themeId, @name, @template)
+                         ON CONFLICT (theme_id, name) DO UPDATE
+                         SET template = EXCLUDED.template",
+                        toAddOrUpdate |> List.map (fun tmpl -> [
+                            "@themeId",  themeIdParam
+                            "@name",     Sql.string tmpl.Name
+                            "@template", Sql.string tmpl.Text
+                        ])
+                ]
+            ()
+    }
+    
+    interface IThemeData with
+        member _.All () = all ()
+        member _.Delete themeId = delete themeId
+        member _.Exists themeId = exists themeId
+        member _.FindById themeId = findById themeId
+        member _.FindByIdWithoutText themeId = findByIdWithoutText themeId
+        member _.Save theme = save theme
+
+
+/// PostreSQL myWebLog theme data implementation        
+type PostgresThemeAssetData (conn : NpgsqlConnection) =
+    
+    /// Get all theme assets (excludes data)
+    let all () =
+        Sql.existingConnection conn
+        |> Sql.query "SELECT theme_id, path, updated_on FROM theme_asset"
+        |> Sql.executeAsync (Map.toThemeAsset false)
+    
+    /// Delete all assets for the given theme
+    let deleteByTheme themeId = backgroundTask {
+        let! _ =
+            Sql.existingConnection conn
+            |> Sql.query "DELETE FROM theme_asset WHERE theme_id = @themeId"
+            |> Sql.parameters [ "@themeId", Sql.string (ThemeId.toString themeId) ]
+            |> Sql.executeNonQueryAsync
+        ()
+    }
+    
+    /// Find a theme asset by its ID
+    let findById assetId =
+        let (ThemeAssetId (ThemeId themeId, path)) = assetId
+        Sql.existingConnection conn
+        |> Sql.query "SELECT * FROM theme_asset WHERE theme_id = @themeId AND path = @path"
+        |> Sql.parameters [ "@themeId", Sql.string themeId; "@path", Sql.string path ]
+        |> Sql.executeAsync (Map.toThemeAsset true)
+        |> tryHead
+    
+    /// Get theme assets for the given theme (excludes data)
+    let findByTheme themeId =
+        Sql.existingConnection conn
+        |> Sql.query "SELECT theme_id, path, updated_on FROM theme_asset WHERE theme_id = @themeId"
+        |> Sql.parameters [ "@themeId", Sql.string (ThemeId.toString themeId) ]
+        |> Sql.executeAsync (Map.toThemeAsset false)
+    
+    /// Get theme assets for the given theme
+    let findByThemeWithData themeId =
+        Sql.existingConnection conn
+        |> Sql.query "SELECT * FROM theme_asset WHERE theme_id = @themeId"
+        |> Sql.parameters [ "@themeId", Sql.string (ThemeId.toString themeId) ]
+        |> Sql.executeAsync (Map.toThemeAsset true)
+    
+    /// Save a theme asset
+    let save (asset : ThemeAsset) = backgroundTask {
+        let (ThemeAssetId (ThemeId themeId, path)) = asset.Id
+        let! _ =
+            Sql.existingConnection conn
+            |> Sql.query
+                "INSERT INTO theme_asset (
+                    theme_id, path, updated_on, data
+                ) VALUES (
+                    @themeId, @path, @updatedOn, @data
+                ) ON CONFLICT (theme_id, path) DO UPDATE
+                SET updated_on = EXCLUDED.updated_on,
+                    data       = EXCLUDED.data"
+            |> Sql.parameters
+                [   "@themeId", Sql.string themeId
+                    "@path",    Sql.string path
+                    "@data",    Sql.bytea  asset.Data
+                    typedParam "updatedOn" asset.UpdatedOn ]
+            |> Sql.executeNonQueryAsync
+        ()
+    }
+    
+    interface IThemeAssetData with
+        member _.All () = all ()
+        member _.DeleteByTheme themeId = deleteByTheme themeId
+        member _.FindById assetId = findById assetId
+        member _.FindByTheme themeId = findByTheme themeId
+        member _.FindByThemeWithData themeId = findByThemeWithData themeId
+        member _.Save asset = save asset

src/MyWebLog.Data/Postgres/PostgresUploadData.fs

@@ -0,0 +1,97 @@
+namespace MyWebLog.Data.Postgres
+
+open MyWebLog
+open MyWebLog.Data
+open Npgsql
+open Npgsql.FSharp
+
+/// PostgreSQL myWebLog uploaded file data implementation        
+type PostgresUploadData (conn : NpgsqlConnection) =
+
+    /// The INSERT statement for an uploaded file
+    let upInsert =
+        "INSERT INTO upload (
+            id, web_log_id, path, updated_on, data
+        ) VALUES (
+            @id, @webLogId, @path, @updatedOn, @data
+        )"
+    
+    /// Parameters for adding an uploaded file
+    let upParams (upload : Upload) = [
+        webLogIdParam upload.WebLogId
+        typedParam "updatedOn" upload.UpdatedOn
+        "@id",   Sql.string (UploadId.toString upload.Id)
+        "@path", Sql.string (Permalink.toString upload.Path)
+        "@data", Sql.bytea  upload.Data
+    ]
+    
+    /// Save an uploaded file
+    let add upload = backgroundTask {
+        let! _ =
+            Sql.existingConnection conn
+            |> Sql.query upInsert
+            |> Sql.parameters (upParams upload)
+            |> Sql.executeNonQueryAsync
+        ()
+    }
+    
+    /// Delete an uploaded file by its ID
+    let delete uploadId webLogId = backgroundTask {
+        let theParams = [ "@id", Sql.string (UploadId.toString uploadId); webLogIdParam webLogId ]
+        let! path =
+            Sql.existingConnection conn
+            |> Sql.query "SELECT path FROM upload WHERE id = @id AND web_log_id = @webLogId"
+            |> Sql.parameters theParams
+            |> Sql.executeAsync (fun row -> row.string "path")
+            |> tryHead
+        if Option.isSome path then
+            let! _ =
+                Sql.existingConnection conn
+                |> Sql.query "DELETE FROM upload WHERE id = @id AND web_log_id = @webLogId"
+                |> Sql.parameters theParams
+                |> Sql.executeNonQueryAsync
+            return Ok path.Value
+        else return Error $"""Upload ID {UploadId.toString uploadId} not found"""
+    }
+    
+    /// Find an uploaded file by its path for the given web log
+    let findByPath path webLogId =
+        Sql.existingConnection conn
+        |> Sql.query "SELECT * FROM upload WHERE web_log_id = @webLogId AND path = @path"
+        |> Sql.parameters [ webLogIdParam webLogId; "@path", Sql.string path ]
+        |> Sql.executeAsync (Map.toUpload true)
+        |> tryHead
+    
+    /// Find all uploaded files for the given web log (excludes data)
+    let findByWebLog webLogId =
+        Sql.existingConnection conn
+        |> Sql.query "SELECT id, web_log_id, path, updated_on FROM upload WHERE web_log_id = @webLogId"
+        |> Sql.parameters [ webLogIdParam webLogId ]
+        |> Sql.executeAsync (Map.toUpload false)
+    
+    /// Find all uploaded files for the given web log
+    let findByWebLogWithData webLogId =
+        Sql.existingConnection conn
+        |> Sql.query "SELECT * FROM upload WHERE web_log_id = @webLogId"
+        |> Sql.parameters [ webLogIdParam webLogId ]
+        |> Sql.executeAsync (Map.toUpload true)
+    
+    /// Restore uploads from a backup
+    let restore uploads = backgroundTask {
+        for batch in uploads |> List.chunkBySize 5 do
+            let! _ =
+                Sql.existingConnection conn
+                |> Sql.executeTransactionAsync [
+                    upInsert, batch |> List.map upParams
+                ]
+            ()
+    }
+    
+    interface IUploadData with
+        member _.Add upload = add upload
+        member _.Delete uploadId webLogId = delete uploadId webLogId
+        member _.FindByPath path webLogId = findByPath path webLogId
+        member _.FindByWebLog webLogId = findByWebLog webLogId
+        member _.FindByWebLogWithData webLogId = findByWebLogWithData webLogId
+        member _.Restore uploads = restore uploads
+        

src/MyWebLog.Data/Postgres/PostgresWebLogData.fs

@@ -0,0 +1,238 @@
+namespace MyWebLog.Data.Postgres
+
+open MyWebLog
+open MyWebLog.Data
+open Newtonsoft.Json
+open Npgsql
+open Npgsql.FSharp
+
+/// PostgreSQL myWebLog web log data implementation        
+type PostgresWebLogData (conn : NpgsqlConnection, ser : JsonSerializer) =
+    
+    // SUPPORT FUNCTIONS
+    
+    /// The parameters for web log INSERT or web log/RSS options UPDATE statements
+    let rssParams (webLog : WebLog) = [
+        "@isFeedEnabled",     Sql.bool         webLog.Rss.IsFeedEnabled
+        "@feedName",          Sql.string       webLog.Rss.FeedName
+        "@itemsInFeed",       Sql.intOrNone    webLog.Rss.ItemsInFeed
+        "@isCategoryEnabled", Sql.bool         webLog.Rss.IsCategoryEnabled
+        "@isTagEnabled",      Sql.bool         webLog.Rss.IsTagEnabled
+        "@copyright",         Sql.stringOrNone webLog.Rss.Copyright
+    ]
+    
+    /// The parameters for web log INSERT or UPDATE statements
+    let webLogParams (webLog : WebLog) = [
+        "@id",           Sql.string       (WebLogId.toString webLog.Id)
+        "@name",         Sql.string       webLog.Name
+        "@slug",         Sql.string       webLog.Slug
+        "@subtitle",     Sql.stringOrNone webLog.Subtitle
+        "@defaultPage",  Sql.string       webLog.DefaultPage
+        "@postsPerPage", Sql.int          webLog.PostsPerPage
+        "@themeId",      Sql.string       (ThemeId.toString webLog.ThemeId)
+        "@urlBase",      Sql.string       webLog.UrlBase
+        "@timeZone",     Sql.string       webLog.TimeZone
+        "@autoHtmx",     Sql.bool         webLog.AutoHtmx
+        "@uploads",      Sql.string       (UploadDestination.toString webLog.Uploads)
+        yield! rssParams webLog
+    ]
+    
+    /// Shorthand to map a result to a custom feed
+    let toCustomFeed =
+        Map.toCustomFeed ser
+    
+    /// Get the current custom feeds for a web log
+    let getCustomFeeds (webLog : WebLog) =
+        Sql.existingConnection conn
+        |> Sql.query "SELECT * FROM web_log_feed WHERE web_log_id = @webLogId"
+        |> Sql.parameters [ webLogIdParam webLog.Id ]
+        |> Sql.executeAsync toCustomFeed
+    
+    /// Append custom feeds to a web log
+    let appendCustomFeeds (webLog : WebLog) = backgroundTask {
+        let! feeds = getCustomFeeds webLog
+        return { webLog with Rss = { webLog.Rss with CustomFeeds = feeds } }
+    }
+    
+    /// The parameters to save a custom feed
+    let feedParams webLogId (feed : CustomFeed) = [
+        webLogIdParam webLogId
+        "@id",      Sql.string      (CustomFeedId.toString feed.Id)
+        "@source",  Sql.string      (CustomFeedSource.toString feed.Source)
+        "@path",    Sql.string      (Permalink.toString feed.Path)
+        "@podcast", Sql.jsonbOrNone (feed.Podcast |> Option.map (Utils.serialize ser))
+    ]
+
+    /// Update the custom feeds for a web log
+    let updateCustomFeeds (webLog : WebLog) = backgroundTask {
+        let! feeds = getCustomFeeds webLog
+        let toDelete, _ = Utils.diffLists feeds webLog.Rss.CustomFeeds (fun it -> $"{CustomFeedId.toString it.Id}")
+        let toId (feed : CustomFeed) = feed.Id
+        let toAddOrUpdate =
+            webLog.Rss.CustomFeeds |> List.filter (fun f -> not (toDelete |> List.map toId |> List.contains f.Id))
+        if not (List.isEmpty toDelete) || not (List.isEmpty toAddOrUpdate) then
+            let! _ =
+                Sql.existingConnection conn
+                |> Sql.executeTransactionAsync [
+                    if not (List.isEmpty toDelete) then
+                        "DELETE FROM web_log_feed WHERE id = @id",
+                        toDelete |> List.map (fun it -> [ "@id", Sql.string (CustomFeedId.toString it.Id) ])
+                    if not (List.isEmpty toAddOrUpdate) then
+                        "INSERT INTO web_log_feed (
+                            id, web_log_id, source, path, podcast
+                        ) VALUES (
+                            @id, @webLogId, @source, @path, @podcast
+                        ) ON CONFLICT (id) DO UPDATE
+                        SET source  = EXCLUDED.source,
+                            path    = EXCLUDED.path,
+                            podcast = EXCLUDED.podcast",
+                        toAddOrUpdate |> List.map (feedParams webLog.Id)
+                ]
+            ()
+    }
+    
+    // IMPLEMENTATION FUNCTIONS
+    
+    /// Add a web log
+    let add webLog = backgroundTask {
+        let! _ =
+            Sql.existingConnection conn
+            |> Sql.query
+                "INSERT INTO web_log (
+                    id, name, slug, subtitle, default_page, posts_per_page, theme_id, url_base, time_zone, auto_htmx,
+                    uploads, is_feed_enabled, feed_name, items_in_feed, is_category_enabled, is_tag_enabled, copyright
+                ) VALUES (
+                    @id, @name, @slug, @subtitle, @defaultPage, @postsPerPage, @themeId, @urlBase, @timeZone, @autoHtmx,
+                    @uploads, @isFeedEnabled, @feedName, @itemsInFeed, @isCategoryEnabled, @isTagEnabled, @copyright
+                )"
+            |> Sql.parameters (webLogParams webLog)
+            |> Sql.executeNonQueryAsync
+        do! updateCustomFeeds webLog
+    }
+    
+    /// Retrieve all web logs
+    let all () = backgroundTask {
+        let! webLogs =
+            Sql.existingConnection conn
+            |> Sql.query "SELECT * FROM web_log"
+            |> Sql.executeAsync Map.toWebLog
+        let! feeds =
+            Sql.existingConnection conn
+            |> Sql.query "SELECT * FROM web_log_feed"
+            |> Sql.executeAsync (fun row -> WebLogId (row.string "web_log_id"), toCustomFeed row)
+        return
+            webLogs
+            |> List.map (fun it ->
+                { it with
+                    Rss =
+                        { it.Rss with
+                            CustomFeeds = feeds |> List.filter (fun (wlId, _) -> wlId = it.Id) |> List.map snd } })
+    }
+    
+    /// Delete a web log by its ID
+    let delete webLogId = backgroundTask {
+        let subQuery table = $"(SELECT id FROM {table} WHERE web_log_id = @webLogId)"
+        let postSubQuery = subQuery "post"
+        let pageSubQuery = subQuery "page"
+        let! _ =
+            Sql.existingConnection conn
+            |> Sql.query $"
+                DELETE FROM post_comment  WHERE post_id IN {postSubQuery};
+                DELETE FROM post_revision WHERE post_id IN {postSubQuery};
+                DELETE FROM post_category WHERE post_id IN {postSubQuery};
+                DELETE FROM post          WHERE web_log_id = @webLogId;
+                DELETE FROM page_revision WHERE page_id IN {pageSubQuery};
+                DELETE FROM page          WHERE web_log_id = @webLogId;
+                DELETE FROM category      WHERE web_log_id = @webLogId;
+                DELETE FROM tag_map       WHERE web_log_id = @webLogId;
+                DELETE FROM upload        WHERE web_log_id = @webLogId;
+                DELETE FROM web_log_user  WHERE web_log_id = @webLogId;
+                DELETE FROM web_log_feed  WHERE web_log_id = @webLogId;
+                DELETE FROM web_log       WHERE id         = @webLogId"
+            |> Sql.parameters [ webLogIdParam webLogId ]
+            |> Sql.executeNonQueryAsync
+        ()
+    }
+    
+    /// Find a web log by its host (URL base)
+    let findByHost url = backgroundTask {
+        let! webLog =
+            Sql.existingConnection conn
+            |> Sql.query "SELECT * FROM web_log WHERE url_base = @urlBase"
+            |> Sql.parameters [ "@urlBase", Sql.string url ]
+            |> Sql.executeAsync Map.toWebLog
+            |> tryHead
+        if Option.isSome webLog then
+            let! withFeeds = appendCustomFeeds webLog.Value
+            return Some withFeeds
+        else return None
+    }
+    
+    /// Find a web log by its ID
+    let findById webLogId = backgroundTask {
+        let! webLog =
+            Sql.existingConnection conn
+            |> Sql.query "SELECT * FROM web_log WHERE id = @webLogId"
+            |> Sql.parameters [ webLogIdParam webLogId ]
+            |> Sql.executeAsync Map.toWebLog
+            |> tryHead
+        if Option.isSome webLog then
+            let! withFeeds = appendCustomFeeds webLog.Value
+            return Some withFeeds
+        else return None
+    }
+    
+    /// Update settings for a web log
+    let updateSettings webLog = backgroundTask {
+        let! _ =
+            Sql.existingConnection conn
+            |> Sql.query
+                "UPDATE web_log
+                    SET name                = @name,
+                        slug                = @slug,
+                        subtitle            = @subtitle,
+                        default_page        = @defaultPage,
+                        posts_per_page      = @postsPerPage,
+                        theme_id            = @themeId,
+                        url_base            = @urlBase,
+                        time_zone           = @timeZone,
+                        auto_htmx           = @autoHtmx,
+                        uploads             = @uploads,
+                        is_feed_enabled     = @isFeedEnabled,
+                        feed_name           = @feedName,
+                        items_in_feed       = @itemsInFeed,
+                        is_category_enabled = @isCategoryEnabled,
+                        is_tag_enabled      = @isTagEnabled,
+                        copyright           = @copyright
+                  WHERE id = @id"
+            |> Sql.parameters (webLogParams webLog)
+            |> Sql.executeNonQueryAsync
+        ()
+    }
+    
+    /// Update RSS options for a web log
+    let updateRssOptions (webLog : WebLog) = backgroundTask {
+        let! _ =
+            Sql.existingConnection conn
+            |> Sql.query
+                "UPDATE web_log
+                    SET is_feed_enabled     = @isFeedEnabled,
+                        feed_name           = @feedName,
+                        items_in_feed       = @itemsInFeed,
+                        is_category_enabled = @isCategoryEnabled,
+                        is_tag_enabled      = @isTagEnabled,
+                        copyright           = @copyright
+                  WHERE id = @webLogId"
+            |> Sql.parameters (webLogIdParam webLog.Id :: rssParams webLog)
+            |> Sql.executeNonQueryAsync
+        do! updateCustomFeeds webLog
+    }
+    
+    interface IWebLogData with
+        member _.Add webLog = add webLog
+        member _.All () = all ()
+        member _.Delete webLogId = delete webLogId
+        member _.FindByHost url = findByHost url
+        member _.FindById webLogId = findById webLogId
+        member _.UpdateSettings webLog = updateSettings webLog
+        member _.UpdateRssOptions webLog = updateRssOptions webLog

src/MyWebLog.Data/Postgres/PostgresWebLogUserData.fs

@@ -0,0 +1,149 @@
+namespace MyWebLog.Data.Postgres
+
+open MyWebLog
+open MyWebLog.Data
+open Npgsql
+open Npgsql.FSharp
+
+/// PostgreSQL myWebLog user data implementation        
+type PostgresWebLogUserData (conn : NpgsqlConnection) =
+    
+    /// The INSERT statement for a user
+    let userInsert =
+        "INSERT INTO web_log_user (
+            id, web_log_id, email, first_name, last_name, preferred_name, password_hash, url, access_level,
+            created_on, last_seen_on
+        ) VALUES (
+            @id, @webLogId, @email, @firstName, @lastName, @preferredName, @passwordHash, @url, @accessLevel,
+            @createdOn, @lastSeenOn
+        )"
+    
+    /// Parameters for saving web log users
+    let userParams (user : WebLogUser) = [
+        "@id",            Sql.string       (WebLogUserId.toString user.Id)
+        "@webLogId",      Sql.string       (WebLogId.toString user.WebLogId)
+        "@email",         Sql.string       user.Email
+        "@firstName",     Sql.string       user.FirstName
+        "@lastName",      Sql.string       user.LastName
+        "@preferredName", Sql.string       user.PreferredName
+        "@passwordHash",  Sql.string       user.PasswordHash
+        "@url",           Sql.stringOrNone user.Url
+        "@accessLevel",   Sql.string       (AccessLevel.toString user.AccessLevel)
+        typedParam "createdOn"  user.CreatedOn
+        optParam   "lastSeenOn" user.LastSeenOn
+    ]
+
+    /// Find a user by their ID for the given web log
+    let findById userId webLogId =
+        Sql.existingConnection conn
+        |> Sql.query "SELECT * FROM web_log_user WHERE id = @id AND web_log_id = @webLogId"
+        |> Sql.parameters [ "@id", Sql.string (WebLogUserId.toString userId); webLogIdParam webLogId ]
+        |> Sql.executeAsync Map.toWebLogUser
+        |> tryHead
+    
+    /// Delete a user if they have no posts or pages
+    let delete userId webLogId = backgroundTask {
+        match! findById userId webLogId with
+        | Some _ ->
+            let userParam = [ "@userId", Sql.string (WebLogUserId.toString userId) ]
+            let! isAuthor =
+                Sql.existingConnection conn
+                |> Sql.query
+                    "SELECT (   EXISTS (SELECT 1 FROM page WHERE author_id = @userId
+                             OR EXISTS (SELECT 1 FROM post WHERE author_id = @userId)) AS does_exist"
+                |> Sql.parameters userParam
+                |> Sql.executeRowAsync Map.toExists
+            if isAuthor then
+                return Error "User has pages or posts; cannot delete"
+            else
+                let! _ =
+                    Sql.existingConnection conn
+                    |> Sql.query "DELETE FROM web_log_user WHERE id = @userId"
+                    |> Sql.parameters userParam
+                    |> Sql.executeNonQueryAsync
+                return Ok true
+        | None -> return Error "User does not exist"
+    }
+    
+    /// Find a user by their e-mail address for the given web log
+    let findByEmail email webLogId =
+        Sql.existingConnection conn
+        |> Sql.query "SELECT * FROM web_log_user WHERE web_log_id = @webLogId AND email = @email"
+        |> Sql.parameters [ webLogIdParam webLogId; "@email", Sql.string email ]
+        |> Sql.executeAsync Map.toWebLogUser
+        |> tryHead
+    
+    /// Get all users for the given web log
+    let findByWebLog webLogId =
+        Sql.existingConnection conn
+        |> Sql.query "SELECT * FROM web_log_user WHERE web_log_id = @webLogId ORDER BY LOWER(preferred_name)"
+        |> Sql.parameters [ webLogIdParam webLogId ]
+        |> Sql.executeAsync Map.toWebLogUser
+    
+    /// Find the names of users by their IDs for the given web log
+    let findNames webLogId userIds = backgroundTask {
+        let idSql, idParams = inClause "AND id" "id" WebLogUserId.toString userIds
+        let! users =
+            Sql.existingConnection conn
+            |> Sql.query $"SELECT * FROM web_log_user WHERE web_log_id = @webLogId {idSql}"
+            |> Sql.parameters (webLogIdParam webLogId :: idParams)
+            |> Sql.executeAsync Map.toWebLogUser
+        return
+            users
+            |> List.map (fun u -> { Name = WebLogUserId.toString u.Id; Value = WebLogUser.displayName u })
+    }
+    
+    /// Restore users from a backup
+    let restore users = backgroundTask {
+        let! _ =
+            Sql.existingConnection conn
+            |> Sql.executeTransactionAsync [
+                userInsert, users |> List.map userParams
+            ]
+        ()
+    }
+    
+    /// Set a user's last seen date/time to now
+    let setLastSeen userId webLogId = backgroundTask {
+        let! _ =
+            Sql.existingConnection conn
+            |> Sql.query "UPDATE web_log_user SET last_seen_on = @lastSeenOn WHERE id = @id AND web_log_id = @webLogId"
+            |> Sql.parameters
+                [   webLogIdParam webLogId
+                    typedParam "lastSeenOn" (Noda.now ())
+                    "@id", Sql.string (WebLogUserId.toString userId) ]
+            |> Sql.executeNonQueryAsync
+        ()
+    }
+    
+    /// Save a user
+    let save user = backgroundTask {
+        let! _ =
+            Sql.existingConnection conn
+            |> Sql.query $"
+                {userInsert} ON CONFLICT (id) DO UPDATE
+                SET email          = @email,
+                    first_name     = @firstName,
+                    last_name      = @lastName,
+                    preferred_name = @preferredName,
+                    password_hash  = @passwordHash,
+                    url            = @url,
+                    access_level   = @accessLevel,
+                    created_on     = @createdOn,
+                    last_seen_on   = @lastSeenOn"
+            |> Sql.parameters (userParams user)
+            |> Sql.executeNonQueryAsync
+        ()
+    }
+    
+    interface IWebLogUserData with
+        member _.Add user = save user
+        member _.Delete userId webLogId = delete userId webLogId
+        member _.FindByEmail email webLogId = findByEmail email webLogId
+        member _.FindById userId webLogId = findById userId webLogId
+        member _.FindByWebLog webLogId = findByWebLog webLogId
+        member _.FindNames webLogId userIds = findNames webLogId userIds
+        member _.Restore users = restore users
+        member _.SetLastSeen userId webLogId = setLastSeen userId webLogId
+        member _.Update user = save user
+

src/MyWebLog.Data/PostgresData.fs

@@ -0,0 +1,260 @@
+namespace MyWebLog.Data
+
+open Microsoft.Extensions.Logging
+open MyWebLog.Data.Postgres
+open Newtonsoft.Json
+open Npgsql
+open Npgsql.FSharp
+
+/// Data implementation for PostgreSQL
+type PostgresData (conn : NpgsqlConnection, log : ILogger<PostgresData>, ser : JsonSerializer) =
+    
+    /// Create any needed tables
+    let ensureTables () = backgroundTask {
+        let _ = NpgsqlConnection.GlobalTypeMapper.UseNodaTime ()
+        
+        let! tables =
+            Sql.existingConnection conn
+            |> Sql.query "SELECT tablename FROM pg_tables WHERE schemaname = 'public'"
+            |> Sql.executeAsync (fun row -> row.string "tablename")
+        let needsTable table = not (List.contains table tables)
+        let mutable isNew = false
+        
+        let sql = seq {
+            // Theme tables
+            if needsTable "theme" then
+                isNew <- true
+                "CREATE TABLE theme (
+                    id       TEXT NOT NULL PRIMARY KEY,
+                    name     TEXT NOT NULL,
+                    version  TEXT NOT NULL)"
+            if needsTable "theme_template" then
+                "CREATE TABLE theme_template (
+                    theme_id  TEXT NOT NULL REFERENCES theme (id),
+                    name      TEXT NOT NULL,
+                    template  TEXT NOT NULL,
+                    PRIMARY KEY (theme_id, name))"
+            if needsTable "theme_asset" then
+                "CREATE TABLE theme_asset (
+                    theme_id    TEXT        NOT NULL REFERENCES theme (id),
+                    path        TEXT        NOT NULL,
+                    updated_on  TIMESTAMPTZ NOT NULL,
+                    data        BYTEA       NOT NULL,
+                    PRIMARY KEY (theme_id, path))"
+            
+            // Web log tables
+            if needsTable "web_log" then
+                "CREATE TABLE web_log (
+                    id                   TEXT    NOT NULL PRIMARY KEY,
+                    name                 TEXT    NOT NULL,
+                    slug                 TEXT    NOT NULL,
+                    subtitle             TEXT,
+                    default_page         TEXT    NOT NULL,
+                    posts_per_page       INTEGER NOT NULL,
+                    theme_id             TEXT    NOT NULL REFERENCES theme (id),
+                    url_base             TEXT    NOT NULL,
+                    time_zone            TEXT    NOT NULL,
+                    auto_htmx            BOOLEAN NOT NULL DEFAULT FALSE,
+                    uploads              TEXT    NOT NULL,
+                    is_feed_enabled      BOOLEAN NOT NULL DEFAULT FALSE,
+                    feed_name            TEXT    NOT NULL,
+                    items_in_feed        INTEGER,
+                    is_category_enabled  BOOLEAN NOT NULL DEFAULT FALSE,
+                    is_tag_enabled       BOOLEAN NOT NULL DEFAULT FALSE,
+                    copyright            TEXT)"
+                "CREATE INDEX web_log_theme_idx ON web_log (theme_id)"
+            if needsTable "web_log_feed" then
+                "CREATE TABLE web_log_feed (
+                    id          TEXT NOT NULL PRIMARY KEY,
+                    web_log_id  TEXT NOT NULL REFERENCES web_log (id),
+                    source      TEXT NOT NULL,
+                    path        TEXT NOT NULL,
+                    podcast     JSONB)"
+                "CREATE INDEX web_log_feed_web_log_idx ON web_log_feed (web_log_id)"
+            
+            // Category table
+            if needsTable "category" then
+                "CREATE TABLE category (
+                    id           TEXT NOT NULL PRIMARY KEY,
+                    web_log_id   TEXT NOT NULL REFERENCES web_log (id),
+                    name         TEXT NOT NULL,
+                    slug         TEXT NOT NULL,
+                    description  TEXT,
+                    parent_id    TEXT)"
+                "CREATE INDEX category_web_log_idx ON category (web_log_id)"
+            
+            // Web log user table
+            if needsTable "web_log_user" then
+                "CREATE TABLE web_log_user (
+                    id              TEXT        NOT NULL PRIMARY KEY,
+                    web_log_id      TEXT        NOT NULL REFERENCES web_log (id),
+                    email           TEXT        NOT NULL,
+                    first_name      TEXT        NOT NULL,
+                    last_name       TEXT        NOT NULL,
+                    preferred_name  TEXT        NOT NULL,
+                    password_hash   TEXT        NOT NULL,
+                    url             TEXT,
+                    access_level    TEXT        NOT NULL,
+                    created_on      TIMESTAMPTZ NOT NULL,
+                    last_seen_on    TIMESTAMPTZ)"
+                "CREATE INDEX web_log_user_web_log_idx ON web_log_user (web_log_id)"
+                "CREATE INDEX web_log_user_email_idx   ON web_log_user (web_log_id, email)"
+            
+            // Page tables
+            if needsTable "page" then
+                "CREATE TABLE page (
+                    id               TEXT        NOT NULL PRIMARY KEY,
+                    web_log_id       TEXT        NOT NULL REFERENCES web_log (id),
+                    author_id        TEXT        NOT NULL REFERENCES web_log_user (id),
+                    title            TEXT        NOT NULL,
+                    permalink        TEXT        NOT NULL,
+                    prior_permalinks TEXT[]      NOT NULL DEFAULT '{}',
+                    published_on     TIMESTAMPTZ NOT NULL,
+                    updated_on       TIMESTAMPTZ NOT NULL,
+                    is_in_page_list  BOOLEAN     NOT NULL DEFAULT FALSE,
+                    template         TEXT,
+                    page_text        TEXT        NOT NULL,
+                    meta_items       JSONB)"
+                "CREATE INDEX page_web_log_idx   ON page (web_log_id)"
+                "CREATE INDEX page_author_idx    ON page (author_id)"
+                "CREATE INDEX page_permalink_idx ON page (web_log_id, permalink)"
+            if needsTable "page_revision" then
+                "CREATE TABLE page_revision (
+                    page_id        TEXT        NOT NULL REFERENCES page (id),
+                    as_of          TIMESTAMPTZ NOT NULL,
+                    revision_text  TEXT        NOT NULL,
+                    PRIMARY KEY (page_id, as_of))"
+            
+            // Post tables
+            if needsTable "post" then
+                "CREATE TABLE post (
+                    id               TEXT        NOT NULL PRIMARY KEY,
+                    web_log_id       TEXT        NOT NULL REFERENCES web_log (id),
+                    author_id        TEXT        NOT NULL REFERENCES web_log_user (id),
+                    status           TEXT        NOT NULL,
+                    title            TEXT        NOT NULL,
+                    permalink        TEXT        NOT NULL,
+                    prior_permalinks TEXT[]      NOT NULL DEFAULT '{}',
+                    published_on     TIMESTAMPTZ,
+                    updated_on       TIMESTAMPTZ NOT NULL,
+                    template         TEXT,
+                    post_text        TEXT        NOT NULL,
+                    tags             TEXT[],
+                    meta_items       JSONB,
+                    episode          JSONB)"
+                "CREATE INDEX post_web_log_idx   ON post (web_log_id)"
+                "CREATE INDEX post_author_idx    ON post (author_id)"
+                "CREATE INDEX post_status_idx    ON post (web_log_id, status, updated_on)"
+                "CREATE INDEX post_permalink_idx ON post (web_log_id, permalink)"
+            if needsTable "post_category" then
+                "CREATE TABLE post_category (
+                    post_id      TEXT NOT NULL REFERENCES post (id),
+                    category_id  TEXT NOT NULL REFERENCES category (id),
+                    PRIMARY KEY (post_id, category_id))"
+                "CREATE INDEX post_category_category_idx ON post_category (category_id)"
+            if needsTable "post_revision" then
+                "CREATE TABLE post_revision (
+                    post_id        TEXT        NOT NULL REFERENCES post (id),
+                    as_of          TIMESTAMPTZ NOT NULL,
+                    revision_text  TEXT        NOT NULL,
+                    PRIMARY KEY (post_id, as_of))"
+            if needsTable "post_comment" then
+                "CREATE TABLE post_comment (
+                    id              TEXT        NOT NULL PRIMARY KEY,
+                    post_id         TEXT        NOT NULL REFERENCES post(id),
+                    in_reply_to_id  TEXT,
+                    name            TEXT        NOT NULL,
+                    email           TEXT        NOT NULL,
+                    url             TEXT,
+                    status          TEXT        NOT NULL,
+                    posted_on       TIMESTAMPTZ NOT NULL,
+                    comment_text    TEXT        NOT NULL)"
+                "CREATE INDEX post_comment_post_idx ON post_comment (post_id)"
+            
+            // Tag map table
+            if needsTable "tag_map" then
+                "CREATE TABLE tag_map (
+                    id          TEXT NOT NULL PRIMARY KEY,
+                    web_log_id  TEXT NOT NULL REFERENCES web_log (id),
+                    tag         TEXT NOT NULL,
+                    url_value   TEXT NOT NULL)"
+                "CREATE INDEX tag_map_web_log_idx ON tag_map (web_log_id)"
+            
+            // Uploaded file table
+            if needsTable "upload" then
+                "CREATE TABLE upload (
+                    id          TEXT        NOT NULL PRIMARY KEY,
+                    web_log_id  TEXT        NOT NULL REFERENCES web_log (id),
+                    path        TEXT        NOT NULL,
+                    updated_on  TIMESTAMPTZ NOT NULL,
+                    data        BYTEA       NOT NULL)"
+                "CREATE INDEX upload_web_log_idx ON upload (web_log_id)"
+                "CREATE INDEX upload_path_idx    ON upload (web_log_id, path)"
+            
+            // Database version table
+            if needsTable "db_version" then
+                "CREATE TABLE db_version (id TEXT NOT NULL PRIMARY KEY)"
+                $"INSERT INTO db_version VALUES ('{Utils.currentDbVersion}')"
+        }
+        
+        Sql.existingConnection conn
+        |> Sql.executeTransactionAsync
+            (sql
+             |> Seq.map (fun s ->
+                let parts = s.Split ' '
+                if parts[1].ToLowerInvariant () = "table" then
+                    log.LogInformation $"Creating {parts[2]} table..."
+                s, [ [] ])
+             |> List.ofSeq)
+        |> Async.AwaitTask
+        |> Async.RunSynchronously
+        |> ignore
+    }
+    
+    /// Set a specific database version
+    let setDbVersion version = backgroundTask {
+        let! _ =
+            Sql.existingConnection conn
+            |> Sql.query $"DELETE FROM db_version; INSERT INTO db_version VALUES ('%s{version}')"
+            |> Sql.executeNonQueryAsync
+        ()
+    }
+    
+    /// Do required data migration between versions
+    let migrate version = backgroundTask {
+        match version with
+        | Some "v2-rc2" -> ()
+        // Future versions will be inserted here
+        | Some _
+        | None ->
+            log.LogWarning $"Unknown database version; assuming {Utils.currentDbVersion}"
+            do! setDbVersion Utils.currentDbVersion
+    }
+        
+    interface IData with
+        
+        member _.Category   = PostgresCategoryData   conn
+        member _.Page       = PostgresPageData       (conn, ser)
+        member _.Post       = PostgresPostData       (conn, ser)
+        member _.TagMap     = PostgresTagMapData     conn
+        member _.Theme      = PostgresThemeData      conn
+        member _.ThemeAsset = PostgresThemeAssetData conn
+        member _.Upload     = PostgresUploadData     conn
+        member _.WebLog     = PostgresWebLogData     (conn, ser)
+        member _.WebLogUser = PostgresWebLogUserData conn
+        
+        member _.Serializer = ser
+        
+        member _.StartUp () = backgroundTask {
+            do! ensureTables ()
+            
+            let! version =
+                Sql.existingConnection conn
+                |> Sql.query "SELECT id FROM db_version"
+                |> Sql.executeAsync (fun row -> row.string "id")
+                |> tryHead
+            match version with
+            | Some v when v = Utils.currentDbVersion -> ()
+            | Some _
+            | None -> do! migrate version 
+        }

src/MyWebLog.Data/RethinkDbData.fs

@@ -18,6 +18,9 @@ module private RethinkHelpers =
         /// The comment table
         let Comment = "Comment"
         
+        /// The database version table
+        let DbVersion = "DbVersion"
+        
         /// The page table
         let Page = "Page"
         
@@ -43,7 +46,7 @@ module private RethinkHelpers =
         let WebLogUser = "WebLogUser"
 
         /// A list of all tables
-        let all = [ Category; Comment; Page; Post; TagMap; Theme; ThemeAsset; Upload; WebLog; WebLogUser ]
+        let all = [ Category; Comment; DbVersion; Page; Post; TagMap; Theme; ThemeAsset; Upload; WebLog; WebLogUser ]
 
     
     /// Index names for indexes not on a data item's name
@@ -96,6 +99,10 @@ type RethinkDbData (conn : Net.IConnection, config : DataConfig, log : ILogger<R
         let keyPrefix = $"^{ThemeId.toString themeId}/"
         fun (row : Ast.ReqlExpr) -> row[nameof ThemeAsset.empty.Id].Match keyPrefix :> obj
     
+    /// Function to exclude template text from themes
+    let withoutTemplateText (row : Ast.ReqlExpr) : obj =
+        {|  Templates = row[nameof Theme.empty.Templates].Without [| nameof ThemeTemplate.empty.Text |] |}
+        
     /// Ensure field indexes exist, as well as special indexes for selected tables
     let ensureIndexes table fields = backgroundTask {
         let! indexes = rethink<string list> { withTable table; indexList; result; withRetryOnce conn }
@@ -176,6 +183,49 @@ type RethinkDbData (conn : Net.IConnection, config : DataConfig, log : ILogger<R
     /// The batch size for restoration methods
     let restoreBatchSize = 100
     
+    /// Delete assets for the given theme ID
+    let deleteAssetsByTheme themeId = rethink {
+        withTable Table.ThemeAsset
+        filter (matchAssetByThemeId themeId)
+        delete
+        write; withRetryDefault; ignoreResult conn
+    }
+    
+    /// Set a specific database version
+    let setDbVersion (version : string) = backgroundTask {
+        do! rethink {
+            withTable Table.DbVersion
+            delete
+            write; withRetryOnce; ignoreResult conn
+        }
+        do! rethink {
+            withTable Table.DbVersion
+            insert {| Id = version |}
+            write; withRetryOnce; ignoreResult conn
+        }
+    }
+    
+    /// Migrate from v2-rc1 to v2-rc2
+    let migrateV2Rc1ToV2Rc2 () = backgroundTask {
+        let logStep = Utils.logMigrationStep log "v2-rc1 to v2-rc2"
+        logStep "**IMPORTANT**"
+        logStep "See release notes about required backup/restoration for RethinkDB."
+        logStep "If there is an error immediately below this message, this is why."
+        logStep "Setting database version to v2-rc2"
+        do! setDbVersion "v2-rc2"
+    }
+    
+    /// Migrate data between versions
+    let migrate version = backgroundTask {
+        match version with
+        | Some v when v = "v2-rc2" -> ()
+        | Some v when v = "v2-rc1" -> do! migrateV2Rc1ToV2Rc2 ()
+        | Some _
+        | None ->
+            log.LogWarning $"Unknown database version; assuming {Utils.currentDbVersion}"
+            do! setDbVersion Utils.currentDbVersion
+    }
+    
     /// The connection for this instance
     member _.Conn = conn
     
@@ -262,7 +312,21 @@ type RethinkDbData (conn : Net.IConnection, config : DataConfig, log : ILogger<R
                 
                 member this.Delete catId webLogId = backgroundTask {
                     match! this.FindById catId webLogId with
-                    | Some _ ->
+                    | Some cat ->
+                        // Reassign any children to the category's parent category
+                        let! children = rethink<int> {
+                            withTable Table.Category
+                            filter (nameof Category.empty.ParentId) catId
+                            count
+                            result; withRetryDefault conn
+                        }
+                        if children > 0 then
+                            do! rethink {
+                                withTable Table.Category
+                                filter (nameof Category.empty.ParentId) catId
+                                update [ nameof Category.empty.ParentId, cat.ParentId :> obj ]
+                                write; withRetryDefault; ignoreResult conn
+                            }
                         // Delete the category off all posts where it is assigned
                         do! rethink {
                             withTable Table.Post
@@ -279,8 +343,8 @@ type RethinkDbData (conn : Net.IConnection, config : DataConfig, log : ILogger<R
                             delete
                             write; withRetryDefault; ignoreResult conn
                         }
-                        return true
-                    | None -> return false
+                        return if children = 0 then CategoryDeleted else ReassignedChildCategories
+                    | None -> return CategoryNotFound
                 }
                 
                 member _.Restore cats = backgroundTask {
@@ -711,11 +775,21 @@ type RethinkDbData (conn : Net.IConnection, config : DataConfig, log : ILogger<R
                 member _.All () = rethink<Theme list> {
                     withTable Table.Theme
                     filter (fun row -> row[nameof Theme.empty.Id].Ne "admin" :> obj)
-                    without [ nameof Theme.empty.Templates ]
+                    merge withoutTemplateText
                     orderBy (nameof Theme.empty.Id)
                     result; withRetryDefault conn
                 }
                 
+                member _.Exists themeId = backgroundTask {
+                    let! count = rethink<int> {
+                        withTable Table.Theme
+                        filter (nameof Theme.empty.Id) themeId
+                        count
+                        result; withRetryDefault conn
+                    }
+                    return count > 0
+                }
+                
                 member _.FindById themeId = rethink<Theme> {
                     withTable Table.Theme
                     get themeId
@@ -725,12 +799,24 @@ type RethinkDbData (conn : Net.IConnection, config : DataConfig, log : ILogger<R
                 member _.FindByIdWithoutText themeId = rethink<Theme> {
                     withTable Table.Theme
                     get themeId
-                    merge (fun row ->
-                        {|  Templates = row[nameof Theme.empty.Templates].Without [| nameof ThemeTemplate.empty.Text |]
-                        |})
+                    merge withoutTemplateText
                     resultOption; withRetryOptionDefault conn
                 }
                 
+                member this.Delete themeId = backgroundTask {
+                    match! this.FindByIdWithoutText themeId with
+                    | Some _ ->
+                        do! deleteAssetsByTheme themeId
+                        do! rethink {
+                            withTable Table.Theme
+                            get themeId
+                            delete
+                            write; withRetryDefault; ignoreResult conn
+                        }
+                        return true
+                    | None -> return false
+                }
+                
                 member _.Save theme = rethink {
                     withTable Table.Theme
                     get theme.Id
@@ -748,12 +834,7 @@ type RethinkDbData (conn : Net.IConnection, config : DataConfig, log : ILogger<R
                     result; withRetryDefault conn
                 }
                 
-                member _.DeleteByTheme themeId = rethink {
-                    withTable Table.ThemeAsset
-                    filter (matchAssetByThemeId themeId)
-                    delete
-                    write; withRetryDefault; ignoreResult conn
-                }
+                member _.DeleteByTheme themeId = deleteAssetsByTheme themeId
                 
                 member _.FindById assetId = rethink<ThemeAsset> {
                     withTable Table.ThemeAsset
@@ -1036,7 +1117,7 @@ type RethinkDbData (conn : Net.IConnection, config : DataConfig, log : ILogger<R
                         do! rethink {
                             withTable Table.WebLogUser
                             get userId
-                            update [ nameof WebLogUser.empty.LastSeenOn, DateTime.UtcNow :> obj ]
+                            update [ nameof WebLogUser.empty.LastSeenOn, Noda.now () :> obj ]
                             write; withRetryOnce; ignoreResult conn
                         }
                     | None -> ()
@@ -1051,7 +1132,6 @@ type RethinkDbData (conn : Net.IConnection, config : DataConfig, log : ILogger<R
                         nameof user.LastName,      user.LastName
                         nameof user.PreferredName, user.PreferredName
                         nameof user.PasswordHash,  user.PasswordHash
-                        nameof user.Salt,          user.Salt
                         nameof user.Url,           user.Url
                         nameof user.AccessLevel,   user.AccessLevel
                         ]
@@ -1059,6 +1139,9 @@ type RethinkDbData (conn : Net.IConnection, config : DataConfig, log : ILogger<R
                 }
         }
         
+        member _.Serializer =
+            Net.Converter.Serializer
+        
         member _.StartUp () = backgroundTask {
             let! dbs = rethink<string list> { dbList; result; withRetryOnce conn }
             if not (dbs |> List.contains config.Database) then
@@ -1071,6 +1154,14 @@ type RethinkDbData (conn : Net.IConnection, config : DataConfig, log : ILogger<R
                     log.LogInformation $"Creating table {tbl}..."
                     do! rethink { tableCreate tbl [ PrimaryKey "Id" ]; write; withRetryOnce; ignoreResult conn }
 
+            if not (List.contains Table.DbVersion tables) then
+                // Version table added in v2-rc2; this will flag that migration to be run
+                do! rethink {
+                    withTable Table.DbVersion
+                    insert {| Id = "v2-rc1" |}
+                    write; withRetryOnce; ignoreResult conn
+                }
+            
             do! ensureIndexes Table.Category   [ nameof Category.empty.WebLogId ]
             do! ensureIndexes Table.Comment    [ nameof Comment.empty.PostId ]
             do! ensureIndexes Table.Page       [ nameof Page.empty.WebLogId; nameof Page.empty.AuthorId ]
@@ -1079,4 +1170,13 @@ type RethinkDbData (conn : Net.IConnection, config : DataConfig, log : ILogger<R
             do! ensureIndexes Table.Upload     []
             do! ensureIndexes Table.WebLog     [ nameof WebLog.empty.UrlBase ]
             do! ensureIndexes Table.WebLogUser [ nameof WebLogUser.empty.WebLogId ]
+            
+            let! version = rethink<{| Id : string |} list> {
+                 withTable Table.DbVersion
+                 limit 1
+                 result; withRetryOnce conn
+            }
+            match List.tryHead version with
+            | Some v when v.Id = "v2-rc2" -> ()
+            | it -> do! migrate (it |> Option.map (fun x -> x.Id))
         }

src/MyWebLog.Data/SQLite/Helpers.fs

@@ -5,6 +5,8 @@ module MyWebLog.Data.SQLite.Helpers
 open System
 open Microsoft.Data.Sqlite
 open MyWebLog
+open MyWebLog.Data
+open NodaTime.Text
 
 /// Run a command that returns a count
 let count (cmd : SqliteCommand) = backgroundTask {
@@ -12,23 +14,6 @@ let count (cmd : SqliteCommand) = backgroundTask {
     return int (it :?> int64)
 }
 
-/// Get lists of items removed from and added to the given lists
-let diffLists<'T, 'U when 'U : equality> oldItems newItems (f : 'T -> 'U) =
-    let diff compList = fun item -> not (compList |> List.exists (fun other -> f item = f other))
-    List.filter (diff newItems) oldItems, List.filter (diff oldItems) newItems
-
-/// Find meta items added and removed
-let diffMetaItems (oldItems : MetaItem list) newItems =
-    diffLists oldItems newItems (fun item -> $"{item.Name}|{item.Value}")
-
-/// Find the permalinks added and removed
-let diffPermalinks oldLinks newLinks =
-    diffLists oldLinks newLinks Permalink.toString
-
-/// Find the revisions added and removed
-let diffRevisions oldRevs newRevs =
-    diffLists oldRevs newRevs (fun (rev : Revision) -> $"{rev.AsOf.Ticks}|{MarkupText.toString rev.Text}")
-
 /// Create a list of items from the given data reader
 let toList<'T> (it : SqliteDataReader -> 'T) (rdr : SqliteDataReader) =
     seq { while rdr.Read () do it rdr }
@@ -47,6 +32,42 @@ let write (cmd : SqliteCommand) = backgroundTask {
     ()
 }
 
+/// Add a possibly-missing parameter, substituting null for None
+let maybe<'T> (it : 'T option) : obj = match it with Some x -> x :> obj | None -> DBNull.Value
+
+/// Create a value for a Duration
+let durationParam =
+    DurationPattern.Roundtrip.Format
+
+/// Create a value for an Instant
+let instantParam =
+    InstantPattern.General.Format
+
+/// Create an optional value for a Duration
+let maybeDuration =
+    Option.map durationParam >> maybe
+
+/// Create an optional value for an Instant
+let maybeInstant =
+    Option.map instantParam >> maybe
+
+/// Create the SQL and parameters for an IN clause
+let inClause<'T> colNameAndPrefix paramName (valueFunc: 'T -> string) (items : 'T list) =
+    if List.isEmpty items then "", []
+    else
+        let mutable idx = 0
+        items
+        |> List.skip 1
+        |> List.fold (fun (itemS, itemP) it ->
+            idx <- idx + 1
+            $"{itemS}, @%s{paramName}{idx}", (SqliteParameter ($"@%s{paramName}{idx}", valueFunc it) :: itemP))
+            (Seq.ofList items
+             |> Seq.map (fun it ->
+                 $"%s{colNameAndPrefix} IN (@%s{paramName}0", [ SqliteParameter ($"@%s{paramName}0", valueFunc it) ])
+             |> Seq.head)
+        |> function sql, ps -> $"{sql})", ps
+
+
 /// Functions to map domain items from a data reader
 module Map =
     
@@ -73,6 +94,26 @@ module Map =
     /// Get a string value from a data reader
     let getString col (rdr : SqliteDataReader) = rdr.GetString (rdr.GetOrdinal col)
     
+    /// Parse a Duration from the given value
+    let parseDuration value =
+        match DurationPattern.Roundtrip.Parse value with
+        | it when it.Success -> it.Value
+        | it -> raise it.Exception
+    
+    /// Get a Duration value from a data reader
+    let getDuration col rdr =
+        getString col rdr |> parseDuration
+    
+    /// Parse an Instant from the given value
+    let parseInstant value =
+        match InstantPattern.General.Parse value with
+        | it when it.Success -> it.Value
+        | it -> raise it.Exception
+    
+    /// Get an Instant value from a data reader
+    let getInstant col rdr =
+        getString col rdr |> parseInstant
+    
     /// Get a timespan value from a data reader
     let getTimeSpan col (rdr : SqliteDataReader) = rdr.GetTimeSpan (rdr.GetOrdinal col)
     
@@ -96,6 +137,14 @@ module Map =
     let tryString col (rdr : SqliteDataReader) =
         if rdr.IsDBNull (rdr.GetOrdinal col) then None else Some (getString col rdr)
     
+    /// Get a possibly null Duration value from a data reader
+    let tryDuration col rdr =
+        tryString col rdr |> Option.map parseDuration
+    
+    /// Get a possibly null Instant value from a data reader
+    let tryInstant col rdr =
+        tryString col rdr |> Option.map parseInstant
+    
     /// Get a possibly null timespan value from a data reader
     let tryTimeSpan col (rdr : SqliteDataReader) =
         if rdr.IsDBNull (rdr.GetOrdinal col) then None else Some (getTimeSpan col rdr)
@@ -114,60 +163,36 @@ module Map =
         }
     
     /// Create a custom feed from the current row in the given data reader
-    let toCustomFeed rdr : CustomFeed =
+    let toCustomFeed ser rdr : CustomFeed =
         {   Id      = getString "id"      rdr |> CustomFeedId
             Source  = getString "source"  rdr |> CustomFeedSource.parse
             Path    = getString "path"    rdr |> Permalink
-            Podcast =
-                if rdr.IsDBNull (rdr.GetOrdinal "title") then
-                    None
-                else
-                    Some {
-                        Title             = getString "title"              rdr
-                        Subtitle          = tryString "subtitle"           rdr
-                        ItemsInFeed       = getInt    "items_in_feed"      rdr
-                        Summary           = getString "summary"            rdr
-                        DisplayedAuthor   = getString "displayed_author"   rdr
-                        Email             = getString "email"              rdr
-                        ImageUrl          = getString "image_url"          rdr |> Permalink
-                        AppleCategory     = getString "apple_category"     rdr
-                        AppleSubcategory  = tryString "apple_subcategory"  rdr
-                        Explicit          = getString "explicit"           rdr |> ExplicitRating.parse
-                        DefaultMediaType  = tryString "default_media_type" rdr
-                        MediaBaseUrl      = tryString "media_base_url"     rdr
-                        PodcastGuid       = tryGuid   "podcast_guid"       rdr
-                        FundingUrl        = tryString "funding_url"        rdr
-                        FundingText       = tryString "funding_text"       rdr
-                        Medium            = tryString "medium"             rdr |> Option.map PodcastMedium.parse
-                    }
-        }
-    
-    /// Create a meta item from the current row in the given data reader
-    let toMetaItem rdr : MetaItem =
-        {   Name  = getString "name"  rdr
-            Value = getString "value" rdr
+            Podcast = tryString "podcast" rdr |> Option.map (Utils.deserialize ser)
         }
     
     /// Create a permalink from the current row in the given data reader
     let toPermalink rdr = getString "permalink" rdr |> Permalink
     
     /// Create a page from the current row in the given data reader
-    let toPage rdr : Page =
+    let toPage ser rdr : Page =
         { Page.empty with
             Id           = getString   "id"              rdr |> PageId
             WebLogId     = getString   "web_log_id"      rdr |> WebLogId
             AuthorId     = getString   "author_id"       rdr |> WebLogUserId
             Title        = getString   "title"           rdr
             Permalink    = toPermalink                   rdr
-            PublishedOn  = getDateTime "published_on"    rdr
-            UpdatedOn    = getDateTime "updated_on"      rdr
+            PublishedOn  = getInstant  "published_on"    rdr
+            UpdatedOn    = getInstant  "updated_on"      rdr
             IsInPageList = getBoolean  "is_in_page_list" rdr
             Template     = tryString   "template"        rdr
             Text         = getString   "page_text"       rdr
+            Metadata     = tryString   "meta_items"   rdr
+                           |> Option.map (Utils.deserialize ser)
+                           |> Option.defaultValue []
         }
     
     /// Create a post from the current row in the given data reader
-    let toPost rdr : Post =
+    let toPost ser rdr : Post =
         { Post.empty with
             Id          = getString   "id"           rdr |> PostId
             WebLogId    = getString   "web_log_id"   rdr |> WebLogId
@@ -175,38 +200,19 @@ module Map =
             Status      = getString   "status"       rdr |> PostStatus.parse
             Title       = getString   "title"        rdr
             Permalink   = toPermalink                rdr
-            PublishedOn    = tryDateTime "published_on" rdr
-            UpdatedOn      = getDateTime "updated_on"   rdr
+            PublishedOn = tryInstant  "published_on" rdr
+            UpdatedOn   = getInstant  "updated_on"   rdr
             Template    = tryString   "template"     rdr
             Text        = getString   "post_text"    rdr
-            Episode        =
-                match tryString "media" rdr with
-                | Some media ->
-                    Some {
-                        Media              = media
-                        Length             = getLong     "length"              rdr
-                        Duration           = tryTimeSpan "duration"            rdr
-                        MediaType          = tryString   "media_type"          rdr
-                        ImageUrl           = tryString   "image_url"           rdr
-                        Subtitle           = tryString   "subtitle"            rdr
-                        Explicit           = tryString   "explicit"            rdr |> Option.map ExplicitRating.parse
-                        ChapterFile        = tryString   "chapter_file"        rdr
-                        ChapterType        = tryString   "chapter_type"        rdr
-                        TranscriptUrl      = tryString   "transcript_url"      rdr
-                        TranscriptType     = tryString   "transcript_type"     rdr
-                        TranscriptLang     = tryString   "transcript_lang"     rdr
-                        TranscriptCaptions = tryBoolean  "transcript_captions" rdr
-                        SeasonNumber       = tryInt      "season_number"       rdr
-                        SeasonDescription  = tryString   "season_description"  rdr
-                        EpisodeNumber      = tryString   "episode_number"      rdr |> Option.map Double.Parse
-                        EpisodeDescription = tryString   "episode_description" rdr
-                    }
-                | None -> None
+            Episode     = tryString   "episode"      rdr |> Option.map (Utils.deserialize ser)
+            Metadata    = tryString   "meta_items"   rdr
+                          |> Option.map (Utils.deserialize ser)
+                          |> Option.defaultValue []
         }
     
     /// Create a revision from the current row in the given data reader
     let toRevision rdr : Revision =
-        {   AsOf = getDateTime "as_of"         rdr
+        {   AsOf = getInstant "as_of"         rdr
             Text = getString  "revision_text" rdr |> MarkupText.parse
         }
     
@@ -237,14 +243,14 @@ module Map =
             else
                 [||]
         {   Id        = ThemeAssetId (ThemeId (getString "theme_id" rdr), getString "path" rdr)
-            UpdatedOn = getDateTime "updated_on" rdr
+            UpdatedOn = getInstant "updated_on" rdr
             Data      = assetData
         }
     
     /// Create a theme template from the current row in the given data reader
-    let toThemeTemplate rdr : ThemeTemplate =
+    let toThemeTemplate includeText rdr : ThemeTemplate =
         {   Name = getString "name" rdr
-            Text = getString "template" rdr
+            Text = if includeText then getString "template" rdr else ""
         }
     
     /// Create an uploaded file from the current row in the given data reader
@@ -260,7 +266,7 @@ module Map =
         {   Id        = getString  "id"         rdr |> UploadId
             WebLogId  = getString  "web_log_id" rdr |> WebLogId
             Path      = getString  "path"       rdr |> Permalink
-            UpdatedOn = getDateTime "updated_on" rdr
+            UpdatedOn = getInstant "updated_on" rdr
             Data      = data
         }
     
@@ -297,16 +303,12 @@ module Map =
             LastName      = getString  "last_name"      rdr
             PreferredName = getString  "preferred_name" rdr
             PasswordHash  = getString  "password_hash"  rdr
-            Salt          = getGuid     "salt"           rdr
             Url           = tryString  "url"            rdr
             AccessLevel   = getString  "access_level"   rdr |> AccessLevel.parse
-            CreatedOn     = getDateTime "created_on"     rdr
-            LastSeenOn    = tryDateTime "last_seen_on"   rdr
+            CreatedOn     = getInstant "created_on"     rdr
+            LastSeenOn    = tryInstant "last_seen_on"   rdr
         }
 
-/// Add a possibly-missing parameter, substituting null for None
-let maybe<'T> (it : 'T option) : obj = match it with Some x -> x :> obj | None -> DBNull.Value
-
 /// Add a web log ID parameter
 let addWebLogId (cmd : SqliteCommand) webLogId =
     cmd.Parameters.AddWithValue ("@webLogId", WebLogId.toString webLogId) |> ignore

src/MyWebLog.Data/SQLite/SQLiteCategoryData.fs

@@ -21,12 +21,12 @@ type SQLiteCategoryData (conn : SqliteConnection) =
     /// Add a category
     let add cat = backgroundTask {
         use cmd = conn.CreateCommand ()
-        cmd.CommandText <- """
-            INSERT INTO category (
+        cmd.CommandText <-
+            "INSERT INTO category (
                 id, web_log_id, name, slug, description, parent_id
             ) VALUES (
                 @id, @webLogId, @name, @slug, @description, @parentId
-            )"""
+            )"
         addCategoryParameters cmd cat
         let! _ = cmd.ExecuteNonQueryAsync ()
         ()
@@ -68,24 +68,23 @@ type SQLiteCategoryData (conn : SqliteConnection) =
             ordered
             |> Seq.map (fun it -> backgroundTask {
                 // Parent category post counts include posts in subcategories
+                let catSql, catParams =
+                    ordered
+                    |> Seq.filter (fun cat -> cat.ParentNames |> Array.contains it.Name)
+                    |> Seq.map (fun cat -> cat.Id)
+                    |> Seq.append (Seq.singleton it.Id)
+                    |> List.ofSeq
+                    |> inClause "AND pc.category_id" "catId" id
                 cmd.Parameters.Clear ()
                 addWebLogId cmd webLogId
-                cmd.CommandText <- """
+                cmd.Parameters.AddRange catParams
+                cmd.CommandText <- $"
                     SELECT COUNT(DISTINCT p.id)
                       FROM post p
                            INNER JOIN post_category pc ON pc.post_id = p.id
                      WHERE p.web_log_id = @webLogId
                        AND p.status     = 'Published'
-                       AND pc.category_id IN ("""
-                ordered
-                |> Seq.filter (fun cat -> cat.ParentNames |> Array.contains it.Name)
-                |> Seq.map (fun cat -> cat.Id)
-                |> Seq.append (Seq.singleton it.Id)
-                |> Seq.iteri (fun idx item ->
-                    if idx > 0 then cmd.CommandText <- $"{cmd.CommandText}, "
-                    cmd.CommandText <- $"{cmd.CommandText}@catId{idx}"
-                    cmd.Parameters.AddWithValue ($"@catId{idx}", item) |> ignore)
-                cmd.CommandText <- $"{cmd.CommandText})"
+                       {catSql}"
                 let! postCount = count cmd
                 return it.Id, postCount
                 })
@@ -122,23 +121,29 @@ type SQLiteCategoryData (conn : SqliteConnection) =
     /// Delete a category
     let delete catId webLogId = backgroundTask {
         match! findById catId webLogId with
-        | Some _ ->
+        | Some cat ->
             use cmd = conn.CreateCommand ()
-            // Delete the category off all posts where it is assigned
-            cmd.CommandText <- """
-                DELETE FROM post_category
+            // Reassign any children to the category's parent category
+            cmd.CommandText <- "SELECT COUNT(id) FROM category WHERE parent_id = @parentId"
+            cmd.Parameters.AddWithValue ("@parentId", CategoryId.toString catId) |> ignore
+            let! children = count cmd
+            if children > 0 then
+                cmd.CommandText <- "UPDATE category SET parent_id = @newParentId WHERE parent_id = @parentId"
+                cmd.Parameters.AddWithValue ("@newParentId", maybe (cat.ParentId |> Option.map CategoryId.toString))
+                |> ignore
+                do! write cmd
+            // Delete the category off all posts where it is assigned, and the category itself
+            cmd.CommandText <-
+                "DELETE FROM post_category
                   WHERE category_id = @id
-                   AND post_id IN (SELECT id FROM post WHERE web_log_id = @webLogId)"""
-            let catIdParameter = cmd.Parameters.AddWithValue ("@id", CategoryId.toString catId)
-            cmd.Parameters.AddWithValue ("@webLogId", WebLogId.toString webLogId) |> ignore
-            do! write cmd
-            // Delete the category itself
-            cmd.CommandText <- "DELETE FROM category WHERE id = @id"
+                    AND post_id IN (SELECT id FROM post WHERE web_log_id = @webLogId);
+                 DELETE FROM category WHERE id = @id"
             cmd.Parameters.Clear ()
-            cmd.Parameters.Add catIdParameter |> ignore
+            let _ = cmd.Parameters.AddWithValue ("@id", CategoryId.toString catId)
+            addWebLogId cmd webLogId
             do! write cmd
-            return true
-        | None -> return false
+            return if children = 0 then CategoryDeleted else ReassignedChildCategories
+        | None -> return CategoryNotFound
     }
     
     /// Restore categories from a backup
@@ -150,14 +155,14 @@ type SQLiteCategoryData (conn : SqliteConnection) =
     /// Update a category
     let update cat = backgroundTask {
         use cmd = conn.CreateCommand ()
-        cmd.CommandText <- """
-            UPDATE category
+        cmd.CommandText <-
+            "UPDATE category
                 SET name        = @name,
                     slug        = @slug,
                     description = @description,
                     parent_id   = @parentId
               WHERE id         = @id
-               AND web_log_id = @webLogId"""
+                AND web_log_id = @webLogId"
         addCategoryParameters cmd cat
         do! write cmd
     }

src/MyWebLog.Data/SQLite/SQLitePageData.fs

@@ -4,9 +4,10 @@ open System.Threading.Tasks
 open Microsoft.Data.Sqlite
 open MyWebLog
 open MyWebLog.Data
+open Newtonsoft.Json
 
 /// SQLite myWebLog page data implementation        
-type SQLitePageData (conn : SqliteConnection) =
+type SQLitePageData (conn : SqliteConnection, ser : JsonSerializer) =
     
     // SUPPORT FUNCTIONS
     
@@ -17,22 +18,15 @@ type SQLitePageData (conn : SqliteConnection) =
             cmd.Parameters.AddWithValue ("@authorId",     WebLogUserId.toString page.AuthorId)
             cmd.Parameters.AddWithValue ("@title",        page.Title)
             cmd.Parameters.AddWithValue ("@permalink",    Permalink.toString page.Permalink)
-            cmd.Parameters.AddWithValue ("@publishedOn", page.PublishedOn)
-            cmd.Parameters.AddWithValue ("@updatedOn", page.UpdatedOn)
+            cmd.Parameters.AddWithValue ("@publishedOn",  instantParam page.PublishedOn)
+            cmd.Parameters.AddWithValue ("@updatedOn",    instantParam page.UpdatedOn)
             cmd.Parameters.AddWithValue ("@isInPageList", page.IsInPageList)
             cmd.Parameters.AddWithValue ("@template",     maybe page.Template)
             cmd.Parameters.AddWithValue ("@text",         page.Text)
+            cmd.Parameters.AddWithValue ("@metaItems",    maybe (if List.isEmpty page.Metadata then None
+                                                                 else Some (Utils.serialize ser page.Metadata)))
         ] |> ignore
     
-    /// Append meta items to a page
-    let appendPageMeta (page : Page) = backgroundTask {
-        use cmd = conn.CreateCommand ()
-        cmd.CommandText <- "SELECT name, value FROM page_meta WHERE page_id = @id"
-        cmd.Parameters.AddWithValue ("@id", PageId.toString page.Id) |> ignore
-        use! rdr = cmd.ExecuteReaderAsync ()
-        return { page with Metadata = toList Map.toMetaItem rdr }
-    }
-    
     /// Append revisions and permalinks to a page
     let appendPageRevisionsAndPermalinks (page : Page) = backgroundTask {
         use cmd = conn.CreateCommand ()
@@ -48,41 +42,17 @@ type SQLitePageData (conn : SqliteConnection) =
         return { page with Revisions = toList Map.toRevision rdr }
     }
     
-    /// Return a page with no text (or meta items, prior permalinks, or revisions)
-    let pageWithoutTextOrMeta rdr =
-        { Map.toPage rdr with Text = "" }
+    /// Shorthand for mapping a data reader to a page
+    let toPage =
+        Map.toPage ser
     
-    /// Update a page's metadata items
-    let updatePageMeta pageId oldItems newItems = backgroundTask {
-        let toDelete, toAdd = diffMetaItems oldItems newItems
-        if List.isEmpty toDelete && List.isEmpty toAdd then
-            return ()
-        else
-            use cmd = conn.CreateCommand ()
-            [ cmd.Parameters.AddWithValue ("@pageId", PageId.toString pageId)
-              cmd.Parameters.Add ("@name", SqliteType.Text)
-              cmd.Parameters.Add ("@value", SqliteType.Text)
-            ] |> ignore
-            let runCmd (item : MetaItem) = backgroundTask {
-                cmd.Parameters["@name" ].Value <- item.Name
-                cmd.Parameters["@value"].Value <- item.Value
-                do! write cmd
-            }
-            cmd.CommandText <- "DELETE FROM page_meta WHERE page_id = @pageId AND name = @name AND value = @value" 
-            toDelete
-            |> List.map runCmd
-            |> Task.WhenAll
-            |> ignore
-            cmd.CommandText <- "INSERT INTO page_meta VALUES (@pageId, @name, @value)"
-            toAdd
-            |> List.map runCmd
-            |> Task.WhenAll
-            |> ignore
-    }
+    /// Return a page with no text (or prior permalinks or revisions)
+    let pageWithoutText rdr =
+        { toPage rdr with Text = "" }
     
     /// Update a page's prior permalinks
     let updatePagePermalinks pageId oldLinks newLinks = backgroundTask {
-        let toDelete, toAdd = diffPermalinks oldLinks newLinks
+        let toDelete, toAdd = Utils.diffPermalinks oldLinks newLinks
         if List.isEmpty toDelete && List.isEmpty toAdd then
             return ()
         else
@@ -108,7 +78,7 @@ type SQLitePageData (conn : SqliteConnection) =
     
     /// Update a page's revisions
     let updatePageRevisions pageId oldRevs newRevs = backgroundTask {
-        let toDelete, toAdd = diffRevisions oldRevs newRevs
+        let toDelete, toAdd = Utils.diffRevisions oldRevs newRevs
         if List.isEmpty toDelete && List.isEmpty toAdd then
             return ()
         else
@@ -116,7 +86,7 @@ type SQLitePageData (conn : SqliteConnection) =
             let runCmd withText rev = backgroundTask {
                 cmd.Parameters.Clear ()
                 [   cmd.Parameters.AddWithValue ("@pageId", PageId.toString pageId)
-                  cmd.Parameters.AddWithValue ("@asOf", rev.AsOf)
+                    cmd.Parameters.AddWithValue ("@asOf",   instantParam rev.AsOf)
                 ] |> ignore
                 if withText then cmd.Parameters.AddWithValue ("@text", MarkupText.toString rev.Text) |> ignore
                 do! write cmd
@@ -139,17 +109,16 @@ type SQLitePageData (conn : SqliteConnection) =
     let add page = backgroundTask {
         use cmd = conn.CreateCommand ()
         // The page itself
-        cmd.CommandText <- """
-            INSERT INTO page (
+        cmd.CommandText <-
+            "INSERT INTO page (
                 id, web_log_id, author_id, title, permalink, published_on, updated_on, is_in_page_list, template,
-                page_text
+                page_text, meta_items
             ) VALUES (
                 @id, @webLogId, @authorId, @title, @permalink, @publishedOn, @updatedOn, @isInPageList, @template,
-                @text
-            )"""
+                @text, @metaItems
+            )"
         addPageParameters cmd page
         do! write cmd
-        do! updatePageMeta       page.Id [] page.Metadata
         do! updatePagePermalinks page.Id [] page.PriorPermalinks
         do! updatePageRevisions  page.Id [] page.Revisions
     }
@@ -160,7 +129,7 @@ type SQLitePageData (conn : SqliteConnection) =
         cmd.CommandText <- "SELECT * FROM page WHERE web_log_id = @webLogId ORDER BY LOWER(title)"
         addWebLogId cmd webLogId
         use! rdr = cmd.ExecuteReaderAsync ()
-        return toList pageWithoutTextOrMeta rdr
+        return toList pageWithoutText rdr
     }
     
     /// Count all pages for the given web log
@@ -174,11 +143,11 @@ type SQLitePageData (conn : SqliteConnection) =
     /// Count all pages shown in the page list for the given web log
     let countListed webLogId = backgroundTask {
         use cmd = conn.CreateCommand ()
-        cmd.CommandText <- """
-            SELECT COUNT(id)
+        cmd.CommandText <-
+            "SELECT COUNT(id)
                FROM page
               WHERE web_log_id      = @webLogId
-               AND is_in_page_list = @isInPageList"""
+                AND is_in_page_list = @isInPageList"
         addWebLogId cmd webLogId
         cmd.Parameters.AddWithValue ("@isInPageList", true) |> ignore
         return! count cmd
@@ -190,11 +159,7 @@ type SQLitePageData (conn : SqliteConnection) =
         cmd.CommandText <- "SELECT * FROM page WHERE id = @id"
         cmd.Parameters.AddWithValue ("@id", PageId.toString pageId) |> ignore
         use! rdr = cmd.ExecuteReaderAsync ()
-        match Helpers.verifyWebLog<Page> webLogId (fun it -> it.WebLogId) Map.toPage rdr with
-        | Some page ->
-            let! page = appendPageMeta page
-            return Some page
-        | None -> return None
+        return Helpers.verifyWebLog<Page> webLogId (fun it -> it.WebLogId) (Map.toPage ser) rdr
     }
     
     /// Find a complete page by its ID
@@ -211,11 +176,10 @@ type SQLitePageData (conn : SqliteConnection) =
         | Some _ ->
             use cmd = conn.CreateCommand ()
             cmd.Parameters.AddWithValue ("@id", PageId.toString pageId) |> ignore
-            cmd.CommandText <- """
-                DELETE FROM page_revision  WHERE page_id = @id;
+            cmd.CommandText <-
+                "DELETE FROM page_revision  WHERE page_id = @id;
                  DELETE FROM page_permalink WHERE page_id = @id;
-                DELETE FROM page_meta      WHERE page_id = @id;
-                DELETE FROM page           WHERE id      = @id"""
+                 DELETE FROM page           WHERE id      = @id"
             do! write cmd
             return true
         | None -> return false
@@ -228,29 +192,21 @@ type SQLitePageData (conn : SqliteConnection) =
         addWebLogId cmd webLogId
         cmd.Parameters.AddWithValue ("@link", Permalink.toString permalink) |> ignore
         use! rdr = cmd.ExecuteReaderAsync ()
-        if rdr.Read () then
-            let! page = appendPageMeta (Map.toPage rdr)
-            return Some page
-        else
-            return None
+        return if rdr.Read () then Some (toPage rdr) else None
     }
     
     /// Find the current permalink within a set of potential prior permalinks for the given web log
     let findCurrentPermalink permalinks webLogId = backgroundTask {
         use cmd = conn.CreateCommand ()
-        cmd.CommandText <- """
+        let linkSql, linkParams = inClause "AND pp.permalink" "link" Permalink.toString permalinks
+        cmd.CommandText <- $"
             SELECT p.permalink
                FROM page p
                     INNER JOIN page_permalink pp ON pp.page_id = p.id
               WHERE p.web_log_id = @webLogId
-               AND pp.permalink IN ("""
-        permalinks
-        |> List.iteri (fun idx link ->
-            if idx > 0 then cmd.CommandText <- $"{cmd.CommandText}, "
-            cmd.CommandText <- $"{cmd.CommandText}@link{idx}"
-            cmd.Parameters.AddWithValue ($"@link{idx}", Permalink.toString link) |> ignore)
-        cmd.CommandText <- $"{cmd.CommandText})"
+                {linkSql}"
         addWebLogId cmd webLogId
+        cmd.Parameters.AddRange linkParams
         use! rdr = cmd.ExecuteReaderAsync ()
         return if rdr.Read () then Some (Map.toPermalink rdr) else None
     }
@@ -262,11 +218,8 @@ type SQLitePageData (conn : SqliteConnection) =
         addWebLogId cmd webLogId
         use! rdr = cmd.ExecuteReaderAsync ()
         let! pages =
-            toList Map.toPage rdr
-            |> List.map (fun page -> backgroundTask {
-                let! page = appendPageMeta page
-                return! appendPageRevisionsAndPermalinks page
-            })
+            toList toPage rdr
+            |> List.map (fun page -> backgroundTask { return! appendPageRevisionsAndPermalinks page })
             |> Task.WhenAll
         return List.ofArray pages
     }
@@ -274,37 +227,33 @@ type SQLitePageData (conn : SqliteConnection) =
     /// Get all listed pages for the given web log (without revisions, prior permalinks, or text)
     let findListed webLogId = backgroundTask {
         use cmd = conn.CreateCommand ()
-        cmd.CommandText <- """
-            SELECT *
+        cmd.CommandText <-
+            "SELECT *
                FROM page
               WHERE web_log_id      = @webLogId
                 AND is_in_page_list = @isInPageList
-             ORDER BY LOWER(title)"""
+              ORDER BY LOWER(title)"
         addWebLogId cmd webLogId
         cmd.Parameters.AddWithValue ("@isInPageList", true) |> ignore
         use! rdr = cmd.ExecuteReaderAsync ()
-        let! pages =
-            toList pageWithoutTextOrMeta rdr
-            |> List.map (fun page -> backgroundTask { return! appendPageMeta page })
-            |> Task.WhenAll
-        return List.ofArray pages
+        return toList pageWithoutText rdr
     }
     
     /// Get a page of pages for the given web log (without revisions, prior permalinks, or metadata)
     let findPageOfPages webLogId pageNbr = backgroundTask {
         use cmd = conn.CreateCommand ()
-        cmd.CommandText <- """
-            SELECT *
+        cmd.CommandText <-
+            "SELECT *
                FROM page
               WHERE web_log_id = @webLogId
               ORDER BY LOWER(title)
-             LIMIT @pageSize OFFSET @toSkip"""
+              LIMIT @pageSize OFFSET @toSkip"
         addWebLogId cmd webLogId
         [   cmd.Parameters.AddWithValue ("@pageSize", 26)
             cmd.Parameters.AddWithValue ("@toSkip",   (pageNbr - 1) * 25)
         ] |> ignore
         use! rdr = cmd.ExecuteReaderAsync ()
-        return toList Map.toPage rdr
+        return toList toPage rdr
     }
     
     /// Restore pages from a backup
@@ -318,8 +267,8 @@ type SQLitePageData (conn : SqliteConnection) =
         match! findFullById page.Id page.WebLogId with
         | Some oldPage ->
             use cmd = conn.CreateCommand ()
-            cmd.CommandText <- """
-                UPDATE page
+            cmd.CommandText <-
+                "UPDATE page
                     SET author_id       = @authorId,
                         title           = @title,
                         permalink       = @permalink,
@@ -327,12 +276,12 @@ type SQLitePageData (conn : SqliteConnection) =
                         updated_on      = @updatedOn,
                         is_in_page_list = @isInPageList,
                         template        = @template,
-                       page_text       = @text
-                 WHERE id         = @pageId
-                   AND web_log_id = @webLogId"""
+                        page_text       = @text,
+                        meta_items      = @metaItems
+                  WHERE id         = @id
+                    AND web_log_id = @webLogId"
             addPageParameters cmd page
             do! write cmd
-            do! updatePageMeta       page.Id oldPage.Metadata        page.Metadata
             do! updatePagePermalinks page.Id oldPage.PriorPermalinks page.PriorPermalinks
             do! updatePageRevisions  page.Id oldPage.Revisions       page.Revisions
             return ()

src/MyWebLog.Data/SQLite/SQLitePostData.fs

@@ -1,13 +1,14 @@
 namespace MyWebLog.Data.SQLite
 
-open System
 open System.Threading.Tasks
 open Microsoft.Data.Sqlite
 open MyWebLog
 open MyWebLog.Data
+open Newtonsoft.Json
+open NodaTime
 
 /// SQLite myWebLog post data implementation        
-type SQLitePostData (conn : SqliteConnection) =
+type SQLitePostData (conn : SqliteConnection, ser : JsonSerializer) =
 
     // SUPPORT FUNCTIONS
     
@@ -19,35 +20,19 @@ type SQLitePostData (conn : SqliteConnection) =
             cmd.Parameters.AddWithValue ("@status",      PostStatus.toString post.Status)
             cmd.Parameters.AddWithValue ("@title",       post.Title)
             cmd.Parameters.AddWithValue ("@permalink",   Permalink.toString post.Permalink)
-            cmd.Parameters.AddWithValue ("@publishedOn", maybe post.PublishedOn)
-            cmd.Parameters.AddWithValue ("@updatedOn", post.UpdatedOn)
+            cmd.Parameters.AddWithValue ("@publishedOn", maybeInstant post.PublishedOn)
+            cmd.Parameters.AddWithValue ("@updatedOn",   instantParam post.UpdatedOn)
             cmd.Parameters.AddWithValue ("@template",    maybe post.Template)
             cmd.Parameters.AddWithValue ("@text",        post.Text)
+            cmd.Parameters.AddWithValue ("@episode",     maybe (if Option.isSome post.Episode then
+                                                                    Some (Utils.serialize ser post.Episode)
+                                                                else None))
+            cmd.Parameters.AddWithValue ("@metaItems",   maybe (if List.isEmpty post.Metadata then None
+                                                                else Some (Utils.serialize ser post.Metadata)))
         ] |> ignore
     
-    /// Add parameters for episode INSERT or UPDATE statements
-    let addEpisodeParameters (cmd : SqliteCommand) (ep : Episode) =
-        [   cmd.Parameters.AddWithValue ("@media", ep.Media)
-            cmd.Parameters.AddWithValue ("@length", ep.Length)
-            cmd.Parameters.AddWithValue ("@duration", maybe ep.Duration)
-            cmd.Parameters.AddWithValue ("@mediaType", maybe ep.MediaType)
-            cmd.Parameters.AddWithValue ("@imageUrl", maybe ep.ImageUrl)
-            cmd.Parameters.AddWithValue ("@subtitle", maybe ep.Subtitle)
-            cmd.Parameters.AddWithValue ("@explicit", maybe (ep.Explicit |> Option.map ExplicitRating.toString))
-            cmd.Parameters.AddWithValue ("@chapterFile", maybe ep.ChapterFile)
-            cmd.Parameters.AddWithValue ("@chapterType", maybe ep.ChapterType)
-            cmd.Parameters.AddWithValue ("@transcriptUrl", maybe ep.TranscriptUrl)
-            cmd.Parameters.AddWithValue ("@transcriptType", maybe ep.TranscriptType)
-            cmd.Parameters.AddWithValue ("@transcriptLang", maybe ep.TranscriptLang)
-            cmd.Parameters.AddWithValue ("@transcriptCaptions", maybe ep.TranscriptCaptions)
-            cmd.Parameters.AddWithValue ("@seasonNumber", maybe ep.SeasonNumber)
-            cmd.Parameters.AddWithValue ("@seasonDescription", maybe ep.SeasonDescription)
-            cmd.Parameters.AddWithValue ("@episodeNumber", maybe (ep.EpisodeNumber |> Option.map string))
-            cmd.Parameters.AddWithValue ("@episodeDescription", maybe ep.EpisodeDescription)
-        ] |> ignore
-        
-    /// Append category IDs, tags, and meta items to a post
-    let appendPostCategoryTagAndMeta (post : Post) = backgroundTask {
+    /// Append category IDs and tags to a post
+    let appendPostCategoryAndTag (post : Post) = backgroundTask {
         use cmd = conn.CreateCommand ()
         cmd.Parameters.AddWithValue ("@id", PostId.toString post.Id) |> ignore
         
@@ -58,12 +43,7 @@ type SQLitePostData (conn : SqliteConnection) =
         
         cmd.CommandText <- "SELECT tag FROM post_tag WHERE post_id = @id"
         use! rdr = cmd.ExecuteReaderAsync ()
-        let post = { post with Tags = toList (Map.getString "tag") rdr }
-        do! rdr.CloseAsync ()
-        
-        cmd.CommandText <- "SELECT name, value FROM post_meta WHERE post_id = @id"
-        use! rdr = cmd.ExecuteReaderAsync ()
-        return { post with Metadata = toList Map.toMetaItem rdr }
+        return { post with Tags = toList (Map.getString "tag") rdr }
     }
     
     /// Append revisions and permalinks to a post
@@ -82,7 +62,11 @@ type SQLitePostData (conn : SqliteConnection) =
     }
     
     /// The SELECT statement for a post that will include episode data, if it exists
-    let selectPost = "SELECT p.*, e.* FROM post p LEFT JOIN post_episode e ON e.post_id = p.id"
+    let selectPost = "SELECT p.* FROM post p"
+    
+    /// Shorthand for mapping a data reader to a post
+    let toPost =
+        Map.toPost ser
     
     /// Find just-the-post by its ID for the given web log (excludes category, tag, meta, revisions, and permalinks)
     let findPostById postId webLogId = backgroundTask {
@@ -90,16 +74,16 @@ type SQLitePostData (conn : SqliteConnection) =
         cmd.CommandText <- $"{selectPost} WHERE p.id = @id"
         cmd.Parameters.AddWithValue ("@id", PostId.toString postId) |> ignore
         use! rdr = cmd.ExecuteReaderAsync ()
-        return Helpers.verifyWebLog<Post> webLogId (fun p -> p.WebLogId) Map.toPost rdr
+        return Helpers.verifyWebLog<Post> webLogId (fun p -> p.WebLogId) toPost rdr
     }
     
     /// Return a post with no revisions, prior permalinks, or text
     let postWithoutText rdr =
-        { Map.toPost rdr with Text = "" }
+        { toPost rdr with Text = "" }
     
     /// Update a post's assigned categories
     let updatePostCategories postId oldCats newCats = backgroundTask {
-        let toDelete, toAdd = diffLists oldCats newCats CategoryId.toString
+        let toDelete, toAdd = Utils.diffLists oldCats newCats CategoryId.toString
         if List.isEmpty toDelete && List.isEmpty toAdd then
             return ()
         else
@@ -125,7 +109,7 @@ type SQLitePostData (conn : SqliteConnection) =
     
     /// Update a post's assigned categories
     let updatePostTags postId (oldTags : string list) newTags = backgroundTask {
-        let toDelete, toAdd = diffLists oldTags newTags id
+        let toDelete, toAdd = Utils.diffLists oldTags newTags id
         if List.isEmpty toDelete && List.isEmpty toAdd then
             return ()
         else
@@ -149,89 +133,9 @@ type SQLitePostData (conn : SqliteConnection) =
             |> ignore
     }
     
-    /// Update an episode
-    let updatePostEpisode (post : Post) = backgroundTask {
-        use cmd = conn.CreateCommand ()
-        cmd.CommandText <- "SELECT COUNT(post_id) FROM post_episode WHERE post_id = @postId"
-        cmd.Parameters.AddWithValue ("@postId", PostId.toString post.Id) |> ignore
-        let! count = count cmd
-        if count = 1 then
-            match post.Episode with
-            | Some ep ->
-                cmd.CommandText <- """
-                    UPDATE post_episode
-                       SET media               = @media,
-                           length              = @length,
-                           duration            = @duration,
-                           media_type          = @mediaType,
-                           image_url           = @imageUrl,
-                           subtitle            = @subtitle,
-                           explicit            = @explicit,
-                           chapter_file        = @chapterFile,
-                           chapter_type        = @chapterType,
-                           transcript_url      = @transcriptUrl,
-                           transcript_type     = @transcriptType,
-                           transcript_lang     = @transcriptLang,
-                           transcript_captions = @transcriptCaptions,
-                           season_number       = @seasonNumber,
-                           season_description  = @seasonDescription,
-                           episode_number      = @episodeNumber,
-                           episode_description = @episodeDescription
-                     WHERE post_id = @postId"""
-                addEpisodeParameters cmd ep
-                do! write cmd
-            | None ->
-                cmd.CommandText <- "DELETE FROM post_episode WHERE post_id = @postId"
-                do! write cmd
-        else
-            match post.Episode with
-            | Some ep ->
-                cmd.CommandText <- """
-                    INSERT INTO post_episode (
-                        post_id, media, length, duration, media_type, image_url, subtitle, explicit, chapter_file,
-                        chapter_type, transcript_url, transcript_type, transcript_lang, transcript_captions,
-                        season_number, season_description, episode_number, episode_description
-                    ) VALUES (
-                        @postId, @media, @length, @duration, @mediaType, @imageUrl, @subtitle, @explicit, @chapterFile,
-                        @chapterType, @transcriptUrl, @transcriptType, @transcriptLang, @transcriptCaptions,
-                        @seasonNumber, @seasonDescription, @episodeNumber, @episodeDescription
-                    )"""
-                addEpisodeParameters cmd ep
-                do! write cmd
-            | None -> ()
-    }
-    
-    /// Update a post's metadata items
-    let updatePostMeta postId oldItems newItems = backgroundTask {
-        let toDelete, toAdd = diffMetaItems oldItems newItems
-        if List.isEmpty toDelete && List.isEmpty toAdd then
-            return ()
-        else
-            use cmd = conn.CreateCommand ()
-            [ cmd.Parameters.AddWithValue ("@postId", PostId.toString postId)
-              cmd.Parameters.Add ("@name", SqliteType.Text)
-              cmd.Parameters.Add ("@value", SqliteType.Text)
-            ] |> ignore
-            let runCmd (item : MetaItem) = backgroundTask {
-                cmd.Parameters["@name" ].Value <- item.Name
-                cmd.Parameters["@value"].Value <- item.Value
-                do! write cmd
-            }
-            cmd.CommandText <- "DELETE FROM post_meta WHERE post_id = @postId AND name = @name AND value = @value" 
-            toDelete
-            |> List.map runCmd
-            |> Task.WhenAll
-            |> ignore
-            cmd.CommandText <- "INSERT INTO post_meta VALUES (@postId, @name, @value)"
-            toAdd
-            |> List.map runCmd
-            |> Task.WhenAll
-            |> ignore
-    }
-    
     /// Update a post's prior permalinks
     let updatePostPermalinks postId oldLinks newLinks = backgroundTask {
-        let toDelete, toAdd = diffPermalinks oldLinks newLinks
+        let toDelete, toAdd = Utils.diffPermalinks oldLinks newLinks
         if List.isEmpty toDelete && List.isEmpty toAdd then
             return ()
         else
@@ -257,7 +161,7 @@ type SQLitePostData (conn : SqliteConnection) =
     
     /// Update a post's revisions
     let updatePostRevisions postId oldRevs newRevs = backgroundTask {
-        let toDelete, toAdd = diffRevisions oldRevs newRevs
+        let toDelete, toAdd = Utils.diffRevisions oldRevs newRevs
         if List.isEmpty toDelete && List.isEmpty toAdd then
             return ()
         else
@@ -265,7 +169,7 @@ type SQLitePostData (conn : SqliteConnection) =
             let runCmd withText rev = backgroundTask {
                 cmd.Parameters.Clear ()
                 [   cmd.Parameters.AddWithValue ("@postId", PostId.toString postId)
-                  cmd.Parameters.AddWithValue ("@asOf", rev.AsOf)
+                    cmd.Parameters.AddWithValue ("@asOf",   instantParam rev.AsOf)
                 ] |> ignore
                 if withText then cmd.Parameters.AddWithValue ("@text", MarkupText.toString rev.Text) |> ignore
                 do! write cmd
@@ -287,18 +191,18 @@ type SQLitePostData (conn : SqliteConnection) =
     /// Add a post
     let add post = backgroundTask {
         use cmd = conn.CreateCommand ()
-        cmd.CommandText <- """
-            INSERT INTO post (
-                id, web_log_id, author_id, status, title, permalink, published_on, updated_on, template, post_text
+        cmd.CommandText <-
+            "INSERT INTO post (
+                id, web_log_id, author_id, status, title, permalink, published_on, updated_on, template, post_text,
+                episode, meta_items
             ) VALUES (
-                @id, @webLogId, @authorId, @status, @title, @permalink, @publishedOn, @updatedOn, @template, @text
-            )"""
+                @id, @webLogId, @authorId, @status, @title, @permalink, @publishedOn, @updatedOn, @template, @text,
+                @episode, @metaItems
+            )"
         addPostParameters cmd post
         do! write cmd
         do! updatePostCategories post.Id [] post.CategoryIds
         do! updatePostTags       post.Id [] post.Tags
-        do! updatePostEpisode    post
-        do! updatePostMeta       post.Id [] post.Metadata
         do! updatePostPermalinks post.Id [] post.PriorPermalinks
         do! updatePostRevisions  post.Id [] post.Revisions
     }
@@ -316,7 +220,7 @@ type SQLitePostData (conn : SqliteConnection) =
     let findById postId webLogId = backgroundTask {
         match! findPostById postId webLogId with
         | Some post ->
-            let! post = appendPostCategoryTagAndMeta post
+            let! post = appendPostCategoryAndTag post
             return Some post
         | None -> return None
     }
@@ -329,7 +233,7 @@ type SQLitePostData (conn : SqliteConnection) =
         cmd.Parameters.AddWithValue ("@link", Permalink.toString permalink) |> ignore
         use! rdr = cmd.ExecuteReaderAsync ()
         if rdr.Read () then
-            let! post = appendPostCategoryTagAndMeta (Map.toPost rdr)
+            let! post = appendPostCategoryAndTag (toPost rdr)
             return Some post
         else
             return None
@@ -350,14 +254,13 @@ type SQLitePostData (conn : SqliteConnection) =
         | Some _ ->
             use cmd = conn.CreateCommand ()
             cmd.Parameters.AddWithValue ("@id", PostId.toString postId) |> ignore
-            cmd.CommandText <- """
-                DELETE FROM post_revision  WHERE post_id = @id;
+            cmd.CommandText <-
+                "DELETE FROM post_revision  WHERE post_id = @id;
                  DELETE FROM post_permalink WHERE post_id = @id;
-                DELETE FROM post_meta      WHERE post_id = @id;
-                DELETE FROM post_episode   WHERE post_id = @id;
                  DELETE FROM post_tag       WHERE post_id = @id;
                  DELETE FROM post_category  WHERE post_id = @id;
-                DELETE FROM post           WHERE id      = @id"""
+                 DELETE FROM post_comment   WHERE post_id = @id;
+                 DELETE FROM post           WHERE id      = @id"
             do! write cmd
             return true
         | None -> return false
@@ -366,19 +269,15 @@ type SQLitePostData (conn : SqliteConnection) =
     /// Find the current permalink from a list of potential prior permalinks for the given web log
     let findCurrentPermalink permalinks webLogId = backgroundTask {
         use cmd = conn.CreateCommand ()
-        cmd.CommandText <- """
+        let linkSql, linkParams = inClause "AND pp.permalink" "link" Permalink.toString permalinks
+        cmd.CommandText <- $"
             SELECT p.permalink
                FROM post p
                     INNER JOIN post_permalink pp ON pp.post_id = p.id
               WHERE p.web_log_id = @webLogId
-               AND pp.permalink IN ("""
-        permalinks
-        |> List.iteri (fun idx link ->
-            if idx > 0 then cmd.CommandText <- $"{cmd.CommandText}, "
-            cmd.CommandText <- $"{cmd.CommandText}@link{idx}"
-            cmd.Parameters.AddWithValue ($"@link{idx}", Permalink.toString link) |> ignore)
-        cmd.CommandText <- $"{cmd.CommandText})"
+                {linkSql}"
         addWebLogId cmd webLogId
+        cmd.Parameters.AddRange linkParams
         use! rdr = cmd.ExecuteReaderAsync ()
         return if rdr.Read () then Some (Map.toPermalink rdr) else None
     }
@@ -390,9 +289,9 @@ type SQLitePostData (conn : SqliteConnection) =
         addWebLogId cmd webLogId
         use! rdr = cmd.ExecuteReaderAsync ()
         let! posts =
-            toList Map.toPost rdr
+            toList toPost rdr
             |> List.map (fun post -> backgroundTask {
-                let! post = appendPostCategoryTagAndMeta post
+                let! post = appendPostCategoryAndTag post
                 return! appendPostRevisionsAndPermalinks post
             })
             |> Task.WhenAll
@@ -402,27 +301,22 @@ type SQLitePostData (conn : SqliteConnection) =
     /// Get a page of categorized posts for the given web log (excludes revisions and prior permalinks)
     let findPageOfCategorizedPosts webLogId categoryIds pageNbr postsPerPage = backgroundTask {
         use cmd = conn.CreateCommand ()
-        cmd.CommandText <- $"""
+        let catSql, catParams = inClause "AND pc.category_id" "catId" CategoryId.toString categoryIds
+        cmd.CommandText <- $"
             {selectPost}
                    INNER JOIN post_category pc ON pc.post_id = p.id
              WHERE p.web_log_id = @webLogId
                AND p.status     = @status
-               AND pc.category_id IN ("""
-        categoryIds
-        |> List.iteri (fun idx catId ->
-            if idx > 0 then cmd.CommandText <- $"{cmd.CommandText}, "
-            cmd.CommandText <- $"{cmd.CommandText}@catId{idx}"
-            cmd.Parameters.AddWithValue ($"@catId{idx}", CategoryId.toString catId) |> ignore)
-        cmd.CommandText <-
-            $"""{cmd.CommandText})
+               {catSql}
              ORDER BY published_on DESC
-                LIMIT {postsPerPage + 1} OFFSET {(pageNbr - 1) * postsPerPage}"""
+             LIMIT {postsPerPage + 1} OFFSET {(pageNbr - 1) * postsPerPage}"
         addWebLogId cmd webLogId
         cmd.Parameters.AddWithValue ("@status", PostStatus.toString Published) |> ignore
+        cmd.Parameters.AddRange catParams
         use! rdr = cmd.ExecuteReaderAsync ()
         let! posts =
-            toList Map.toPost rdr
-            |> List.map (fun post -> backgroundTask { return! appendPostCategoryTagAndMeta post })
+            toList toPost rdr
+            |> List.map (fun post -> backgroundTask { return! appendPostCategoryAndTag post })
             |> Task.WhenAll
         return List.ofArray posts
     }
@@ -430,16 +324,16 @@ type SQLitePostData (conn : SqliteConnection) =
     /// Get a page of posts for the given web log (excludes text, revisions, and prior permalinks)
     let findPageOfPosts webLogId pageNbr postsPerPage = backgroundTask {
         use cmd = conn.CreateCommand ()
-        cmd.CommandText <- $"""
+        cmd.CommandText <- $"
             {selectPost}
              WHERE p.web_log_id = @webLogId
              ORDER BY p.published_on DESC NULLS FIRST, p.updated_on
-              LIMIT {postsPerPage + 1} OFFSET {(pageNbr - 1) * postsPerPage}"""
+             LIMIT {postsPerPage + 1} OFFSET {(pageNbr - 1) * postsPerPage}"
         addWebLogId cmd webLogId
         use! rdr = cmd.ExecuteReaderAsync ()
         let! posts =
             toList postWithoutText rdr
-            |> List.map (fun post -> backgroundTask { return! appendPostCategoryTagAndMeta post })
+            |> List.map (fun post -> backgroundTask { return! appendPostCategoryAndTag post })
             |> Task.WhenAll
         return List.ofArray posts
     }
@@ -447,18 +341,18 @@ type SQLitePostData (conn : SqliteConnection) =
     /// Get a page of published posts for the given web log (excludes revisions and prior permalinks)
     let findPageOfPublishedPosts webLogId pageNbr postsPerPage = backgroundTask {
         use cmd = conn.CreateCommand ()
-        cmd.CommandText <- $"""
+        cmd.CommandText <- $"
             {selectPost}
              WHERE p.web_log_id = @webLogId
                AND p.status     = @status
              ORDER BY p.published_on DESC
-              LIMIT {postsPerPage + 1} OFFSET {(pageNbr - 1) * postsPerPage}"""
+             LIMIT {postsPerPage + 1} OFFSET {(pageNbr - 1) * postsPerPage}"
         addWebLogId cmd webLogId
         cmd.Parameters.AddWithValue ("@status", PostStatus.toString Published) |> ignore
         use! rdr = cmd.ExecuteReaderAsync ()
         let! posts =
-            toList Map.toPost rdr
-            |> List.map (fun post -> backgroundTask { return! appendPostCategoryTagAndMeta post })
+            toList toPost rdr
+            |> List.map (fun post -> backgroundTask { return! appendPostCategoryAndTag post })
             |> Task.WhenAll
         return List.ofArray posts
     }
@@ -466,60 +360,60 @@ type SQLitePostData (conn : SqliteConnection) =
     /// Get a page of tagged posts for the given web log (excludes revisions and prior permalinks)
     let findPageOfTaggedPosts webLogId (tag : string) pageNbr postsPerPage = backgroundTask {
         use cmd = conn.CreateCommand ()
-        cmd.CommandText <- $"""
+        cmd.CommandText <- $"
             {selectPost}
                    INNER JOIN post_tag pt ON pt.post_id = p.id
              WHERE p.web_log_id = @webLogId
                AND p.status     = @status
                AND pt.tag       = @tag
              ORDER BY p.published_on DESC
-              LIMIT {postsPerPage + 1} OFFSET {(pageNbr - 1) * postsPerPage}"""
+             LIMIT {postsPerPage + 1} OFFSET {(pageNbr - 1) * postsPerPage}"
         addWebLogId cmd webLogId
         [ cmd.Parameters.AddWithValue ("@status", PostStatus.toString Published)
           cmd.Parameters.AddWithValue ("@tag", tag)
         ] |> ignore
         use! rdr = cmd.ExecuteReaderAsync ()
         let! posts =
-            toList Map.toPost rdr
-            |> List.map (fun post -> backgroundTask { return! appendPostCategoryTagAndMeta post })
+            toList toPost rdr
+            |> List.map (fun post -> backgroundTask { return! appendPostCategoryAndTag post })
             |> Task.WhenAll
         return List.ofArray posts
     }
     
     /// Find the next newest and oldest post from a publish date for the given web log
-    let findSurroundingPosts webLogId (publishedOn : DateTime) = backgroundTask {
+    let findSurroundingPosts webLogId (publishedOn : Instant) = backgroundTask {
         use cmd = conn.CreateCommand ()
-        cmd.CommandText <- $"""
+        cmd.CommandText <- $"
             {selectPost}
              WHERE p.web_log_id   = @webLogId
                AND p.status       = @status
                AND p.published_on < @publishedOn
              ORDER BY p.published_on DESC
-             LIMIT 1"""
+             LIMIT 1"
         addWebLogId cmd webLogId
         [   cmd.Parameters.AddWithValue ("@status",      PostStatus.toString Published)
-          cmd.Parameters.AddWithValue ("@publishedOn", publishedOn)
+            cmd.Parameters.AddWithValue ("@publishedOn", instantParam publishedOn)
         ] |> ignore
         use! rdr = cmd.ExecuteReaderAsync ()
         let! older = backgroundTask {
             if rdr.Read () then
-                let! post = appendPostCategoryTagAndMeta (postWithoutText rdr)
+                let! post = appendPostCategoryAndTag (postWithoutText rdr)
                 return Some post
             else
                 return None
         }
         do! rdr.CloseAsync ()
-        cmd.CommandText <- $"""
+        cmd.CommandText <- $"
             {selectPost}
              WHERE p.web_log_id   = @webLogId
                AND p.status       = @status
                AND p.published_on > @publishedOn
              ORDER BY p.published_on
-             LIMIT 1"""
+             LIMIT 1"
         use! rdr = cmd.ExecuteReaderAsync ()
         let! newer = backgroundTask {
             if rdr.Read () then
-                let! post = appendPostCategoryTagAndMeta (postWithoutText rdr)
+                let! post = appendPostCategoryAndTag (postWithoutText rdr)
                 return Some post
             else
                 return None
@@ -538,8 +432,8 @@ type SQLitePostData (conn : SqliteConnection) =
         match! findFullById post.Id post.WebLogId with
         | Some oldPost ->
             use cmd = conn.CreateCommand ()
-            cmd.CommandText <- """
-                UPDATE post
+            cmd.CommandText <-
+                "UPDATE post
                     SET author_id    = @authorId,
                         status       = @status,
                         title        = @title,
@@ -547,15 +441,15 @@ type SQLitePostData (conn : SqliteConnection) =
                         published_on = @publishedOn,
                         updated_on   = @updatedOn,
                         template     = @template,
-                       post_text    = @text
+                        post_text    = @text,
+                        episode      = @episode,
+                        meta_items   = @metaItems
                   WHERE id         = @id
-                   AND web_log_id = @webLogId"""
+                    AND web_log_id = @webLogId"
             addPostParameters cmd post
             do! write cmd
             do! updatePostCategories post.Id oldPost.CategoryIds     post.CategoryIds
             do! updatePostTags       post.Id oldPost.Tags            post.Tags
-            do! updatePostEpisode    post
-            do! updatePostMeta       post.Id oldPost.Metadata        post.Metadata
             do! updatePostPermalinks post.Id oldPost.PriorPermalinks post.PriorPermalinks
             do! updatePostRevisions  post.Id oldPost.Revisions       post.Revisions
         | None -> return ()

src/MyWebLog.Data/SQLite/SQLiteTagMapData.fs

@@ -50,18 +50,14 @@ type SQLiteTagMapData (conn : SqliteConnection) =
     /// Find any tag mappings in a list of tags for the given web log
     let findMappingForTags (tags : string list) webLogId = backgroundTask {
         use cmd = conn.CreateCommand ()
-        cmd.CommandText <- """
+        let mapSql, mapParams = inClause "AND tag" "tag" id tags
+        cmd.CommandText <- $"
             SELECT *
                FROM tag_map
               WHERE web_log_id = @webLogId
-               AND tag IN ("""
-        tags
-        |> List.iteri (fun idx tag ->
-            if idx > 0 then cmd.CommandText <- $"{cmd.CommandText}, "
-            cmd.CommandText <- $"{cmd.CommandText}@tag{idx}"
-            cmd.Parameters.AddWithValue ($"@tag{idx}", tag) |> ignore)
-        cmd.CommandText <- $"{cmd.CommandText})"
+                {mapSql}"
         addWebLogId cmd webLogId
+        cmd.Parameters.AddRange mapParams
         use! rdr = cmd.ExecuteReaderAsync ()
         return toList Map.toTagMap rdr
     }
@@ -71,19 +67,19 @@ type SQLiteTagMapData (conn : SqliteConnection) =
         use cmd = conn.CreateCommand ()
         match! findById tagMap.Id tagMap.WebLogId with
         | Some _ ->
-            cmd.CommandText <- """
-                UPDATE tag_map
+            cmd.CommandText <-
+                "UPDATE tag_map
                     SET tag       = @tag,
                         url_value = @urlValue
                   WHERE id         = @id
-                   AND web_log_id = @webLogId"""
+                    AND web_log_id = @webLogId"
         | None ->
-            cmd.CommandText <- """
-                INSERT INTO tag_map (
+            cmd.CommandText <-
+                "INSERT INTO tag_map (
                     id, web_log_id, tag, url_value
                 ) VALUES (
                     @id, @webLogId, @tag, @urlValue
-                )"""
+                )"
         addWebLogId cmd tagMap.WebLogId
         [   cmd.Parameters.AddWithValue ("@id",       TagMapId.toString tagMap.Id)
             cmd.Parameters.AddWithValue ("@tag",      tagMap.Tag)

src/MyWebLog.Data/SQLite/SQLiteThemeData.fs

@@ -8,12 +8,31 @@ open MyWebLog.Data
 /// SQLite myWebLog theme data implementation        
 type SQLiteThemeData (conn : SqliteConnection) =
     
-    /// Retrieve all themes (except 'admin'; excludes templates)
+    /// Retrieve all themes (except 'admin'; excludes template text)
     let all () = backgroundTask {
         use cmd = conn.CreateCommand ()
         cmd.CommandText <- "SELECT * FROM theme WHERE id <> 'admin' ORDER BY id"
         use! rdr = cmd.ExecuteReaderAsync ()
-        return toList Map.toTheme rdr
+        let themes = toList Map.toTheme rdr
+        do! rdr.CloseAsync ()
+        cmd.CommandText <- "SELECT name, theme_id FROM theme_template WHERE theme_id <> 'admin' ORDER BY name"
+        use! rdr = cmd.ExecuteReaderAsync ()
+        let templates =
+            seq { while rdr.Read () do ThemeId (Map.getString "theme_id" rdr), Map.toThemeTemplate false rdr }
+            |> List.ofSeq
+        return
+            themes
+            |> List.map (fun t ->
+                { t with Templates = templates |> List.filter (fun (themeId, _) -> themeId = t.Id) |> List.map snd })
+    }
+    
+    /// Does a given theme exist?
+    let exists themeId = backgroundTask {
+        use cmd = conn.CreateCommand ()
+        cmd.CommandText <- "SELECT COUNT(id) FROM theme WHERE id = @id"
+        cmd.Parameters.AddWithValue ("@id", ThemeId.toString themeId) |> ignore
+        let! count = count cmd
+        return count > 0
     }
     
     /// Find a theme by its ID
@@ -28,7 +47,7 @@ type SQLiteThemeData (conn : SqliteConnection) =
             templateCmd.CommandText <- "SELECT * FROM theme_template WHERE theme_id = @id"
             templateCmd.Parameters.Add cmd.Parameters["@id"] |> ignore
             use! templateRdr = templateCmd.ExecuteReaderAsync ()
-            return Some { theme with Templates = toList Map.toThemeTemplate templateRdr }
+            return Some { theme with Templates = toList (Map.toThemeTemplate true) templateRdr }
         else
             return None
     }
@@ -43,6 +62,21 @@ type SQLiteThemeData (conn : SqliteConnection) =
         | None -> return None
     }
     
+    /// Delete a theme by its ID
+    let delete themeId = backgroundTask {
+        match! findByIdWithoutText themeId with
+        | Some _ ->
+            use cmd = conn.CreateCommand ()
+            cmd.CommandText <-
+                "DELETE FROM theme_asset    WHERE theme_id = @id;
+                 DELETE FROM theme_template WHERE theme_id = @id;
+                 DELETE FROM theme          WHERE id       = @id"
+            cmd.Parameters.AddWithValue ("@id", ThemeId.toString themeId) |> ignore
+            do! write cmd
+            return true
+        | None -> return false
+    }
+    
     /// Save a theme
     let save (theme : Theme) = backgroundTask {
         use cmd = conn.CreateCommand ()
@@ -58,7 +92,7 @@ type SQLiteThemeData (conn : SqliteConnection) =
         do! write cmd
         
         let toDelete, toAdd =
-            diffLists (oldTheme |> Option.map (fun t -> t.Templates) |> Option.defaultValue [])
+            Utils.diffLists (oldTheme |> Option.map (fun t -> t.Templates) |> Option.defaultValue [])
                             theme.Templates (fun t -> t.Name)
         let toUpdate =
             theme.Templates
@@ -102,6 +136,8 @@ type SQLiteThemeData (conn : SqliteConnection) =
     
     interface IThemeData with
         member _.All () = all ()
+        member _.Delete themeId = delete themeId
+        member _.Exists themeId = exists themeId
         member _.FindById themeId = findById themeId
         member _.FindByIdWithoutText themeId = findByIdWithoutText themeId
         member _.Save theme = save theme
@@ -172,20 +208,20 @@ type SQLiteThemeAssetData (conn : SqliteConnection) =
         use cmd = conn.CreateCommand ()
         cmd.CommandText <-
             if exists = 1 then
-                """UPDATE theme_asset
+                "UPDATE theme_asset
                     SET updated_on = @updatedOn,
                         data       = ZEROBLOB(@dataLength)
                   WHERE theme_id = @themeId
-                      AND path     = @path"""
+                    AND path     = @path"
             else
-                """INSERT INTO theme_asset (
+                "INSERT INTO theme_asset (
                     theme_id, path, updated_on, data
                 ) VALUES (
                     @themeId, @path, @updatedOn, ZEROBLOB(@dataLength)
-                   )"""
+                )"
         [   cmd.Parameters.AddWithValue ("@themeId",    themeId)
             cmd.Parameters.AddWithValue ("@path",       path)
-          cmd.Parameters.AddWithValue ("@updatedOn", asset.UpdatedOn)
+            cmd.Parameters.AddWithValue ("@updatedOn",  instantParam asset.UpdatedOn)
             cmd.Parameters.AddWithValue ("@dataLength", asset.Data.Length)
         ] |> ignore
         do! write cmd

src/MyWebLog.Data/SQLite/SQLiteUploadData.fs

@@ -13,19 +13,19 @@ type SQLiteUploadData (conn : SqliteConnection) =
         [   cmd.Parameters.AddWithValue ("@id",         UploadId.toString upload.Id)
             cmd.Parameters.AddWithValue ("@webLogId",   WebLogId.toString upload.WebLogId)
             cmd.Parameters.AddWithValue ("@path",       Permalink.toString upload.Path)
-            cmd.Parameters.AddWithValue ("@updatedOn", upload.UpdatedOn)
+            cmd.Parameters.AddWithValue ("@updatedOn",  instantParam upload.UpdatedOn)
             cmd.Parameters.AddWithValue ("@dataLength", upload.Data.Length)
         ] |> ignore
     
     /// Save an uploaded file
     let add upload = backgroundTask {
         use cmd = conn.CreateCommand ()
-        cmd.CommandText <- """
-            INSERT INTO upload (
+        cmd.CommandText <-
+            "INSERT INTO upload (
                 id, web_log_id, path, updated_on, data
             ) VALUES (
                 @id, @webLogId, @path, @updatedOn, ZEROBLOB(@dataLength)
-            )"""
+            )"
         addUploadParameters cmd upload
         do! write cmd
         
@@ -40,11 +40,11 @@ type SQLiteUploadData (conn : SqliteConnection) =
     /// Delete an uploaded file by its ID
     let delete uploadId webLogId = backgroundTask {
         use cmd = conn.CreateCommand ()
-        cmd.CommandText <- """
-            SELECT id, web_log_id, path, updated_on
+        cmd.CommandText <-
+            "SELECT id, web_log_id, path, updated_on
                FROM upload
               WHERE id         = @id
-               AND web_log_id = @webLogId"""
+                AND web_log_id = @webLogId"
         addWebLogId cmd webLogId
         cmd.Parameters.AddWithValue ("@id", UploadId.toString uploadId) |> ignore
         let! rdr = cmd.ExecuteReaderAsync ()

src/MyWebLog.Data/SQLite/SQLiteWebLogData.fs

@@ -4,12 +4,13 @@ open System.Threading.Tasks
 open Microsoft.Data.Sqlite
 open MyWebLog
 open MyWebLog.Data
+open Newtonsoft.Json
 
 // The web log podcast insert loop is not statically compilable; this is OK
 #nowarn "3511"
 
 /// SQLite myWebLog web log data implementation        
-type SQLiteWebLogData (conn : SqliteConnection) =
+type SQLiteWebLogData (conn : SqliteConnection, ser : JsonSerializer) =
     
     // SUPPORT FUNCTIONS
     
@@ -45,40 +46,22 @@ type SQLiteWebLogData (conn : SqliteConnection) =
             cmd.Parameters.AddWithValue ("@webLogId", WebLogId.toString webLogId)
             cmd.Parameters.AddWithValue ("@source",   CustomFeedSource.toString feed.Source)
             cmd.Parameters.AddWithValue ("@path",     Permalink.toString feed.Path)
+            cmd.Parameters.AddWithValue ("@podcast",  maybe (if Option.isSome feed.Podcast then
+                                                                 Some (Utils.serialize ser feed.Podcast)
+                                                             else None))
         ] |> ignore
     
-    /// Add parameters for podcast INSERT or UPDATE statements
-    let addPodcastParameters (cmd : SqliteCommand) feedId (podcast : PodcastOptions) =
-        [   cmd.Parameters.AddWithValue ("@feedId", CustomFeedId.toString feedId)
-            cmd.Parameters.AddWithValue ("@title", podcast.Title)
-            cmd.Parameters.AddWithValue ("@subtitle", maybe podcast.Subtitle)
-            cmd.Parameters.AddWithValue ("@itemsInFeed", podcast.ItemsInFeed)
-            cmd.Parameters.AddWithValue ("@summary", podcast.Summary)
-            cmd.Parameters.AddWithValue ("@displayedAuthor", podcast.DisplayedAuthor)
-            cmd.Parameters.AddWithValue ("@email", podcast.Email)
-            cmd.Parameters.AddWithValue ("@imageUrl", Permalink.toString podcast.ImageUrl)
-            cmd.Parameters.AddWithValue ("@appleCategory", podcast.AppleCategory)
-            cmd.Parameters.AddWithValue ("@appleSubcategory", maybe podcast.AppleSubcategory)
-            cmd.Parameters.AddWithValue ("@explicit", ExplicitRating.toString podcast.Explicit)
-            cmd.Parameters.AddWithValue ("@defaultMediaType", maybe podcast.DefaultMediaType)
-            cmd.Parameters.AddWithValue ("@mediaBaseUrl", maybe podcast.MediaBaseUrl)
-            cmd.Parameters.AddWithValue ("@podcastGuid", maybe podcast.PodcastGuid)
-            cmd.Parameters.AddWithValue ("@fundingUrl", maybe podcast.FundingUrl)
-            cmd.Parameters.AddWithValue ("@fundingText", maybe podcast.FundingText)
-            cmd.Parameters.AddWithValue ("@medium", maybe (podcast.Medium |> Option.map PodcastMedium.toString))
-        ] |> ignore
+    /// Shorthand to map a data reader to a custom feed
+    let toCustomFeed =
+        Map.toCustomFeed ser
     
     /// Get the current custom feeds for a web log
     let getCustomFeeds (webLog : WebLog) = backgroundTask {
         use cmd = conn.CreateCommand ()
-        cmd.CommandText <- """
-            SELECT f.*, p.*
-              FROM web_log_feed f
-                   LEFT JOIN web_log_feed_podcast p ON p.feed_id = f.id
-             WHERE f.web_log_id = @webLogId"""
+        cmd.CommandText <- "SELECT * FROM web_log_feed WHERE web_log_id = @webLogId"
         addWebLogId cmd webLog.Id
         use! rdr = cmd.ExecuteReaderAsync ()
-        return toList Map.toCustomFeed rdr
+        return toList toCustomFeed rdr
     }
     
     /// Append custom feeds to a web log
@@ -87,27 +70,10 @@ type SQLiteWebLogData (conn : SqliteConnection) =
         return { webLog with Rss = { webLog.Rss with CustomFeeds = feeds } }
     }
     
-    /// Add a podcast to a custom feed
-    let addPodcast feedId (podcast : PodcastOptions) = backgroundTask {
-        use cmd = conn.CreateCommand ()
-        cmd.CommandText <- """
-            INSERT INTO web_log_feed_podcast (
-                feed_id, title, subtitle, items_in_feed, summary, displayed_author, email, image_url,
-                apple_category, apple_subcategory, explicit, default_media_type, media_base_url, podcast_guid,
-                funding_url, funding_text, medium
-            ) VALUES (
-                @feedId, @title, @subtitle, @itemsInFeed, @summary, @displayedAuthor, @email, @imageUrl,
-                @appleCategory, @appleSubcategory, @explicit, @defaultMediaType, @mediaBaseUrl, @podcastGuid,
-                @fundingUrl, @fundingText, @medium
-            )"""
-        addPodcastParameters cmd feedId podcast
-        do! write cmd
-    }
-    
     /// Update the custom feeds for a web log
     let updateCustomFeeds (webLog : WebLog) = backgroundTask {
         let! feeds = getCustomFeeds webLog
-        let toDelete, toAdd = diffLists feeds webLog.Rss.CustomFeeds (fun it -> $"{CustomFeedId.toString it.Id}")
+        let toDelete, toAdd = Utils.diffLists feeds webLog.Rss.CustomFeeds (fun it -> $"{CustomFeedId.toString it.Id}")
         let toId (feed : CustomFeed) = feed.Id
         let toUpdate =
             webLog.Rss.CustomFeeds
@@ -117,9 +83,7 @@ type SQLiteWebLogData (conn : SqliteConnection) =
         cmd.Parameters.Add ("@id", SqliteType.Text) |> ignore
         toDelete
         |> List.map (fun it -> backgroundTask {
-            cmd.CommandText <- """
-                DELETE FROM web_log_feed_podcast WHERE feed_id = @id;
-                DELETE FROM web_log_feed         WHERE id      = @id"""
+            cmd.CommandText <- "DELETE FROM web_log_feed WHERE id = @id"
             cmd.Parameters["@id"].Value <- CustomFeedId.toString it.Id
             do! write cmd
         })
@@ -128,68 +92,30 @@ type SQLiteWebLogData (conn : SqliteConnection) =
         cmd.Parameters.Clear ()
         toAdd
         |> List.map (fun it -> backgroundTask {
-            cmd.CommandText <- """
-                INSERT INTO web_log_feed (
-                    id, web_log_id, source, path
+            cmd.CommandText <-
+                "INSERT INTO web_log_feed (
+                    id, web_log_id, source, path, podcast
                 ) VALUES (
-                    @id, @webLogId, @source, @path
-                )"""
+                    @id, @webLogId, @source, @path, @podcast
+                )"
             cmd.Parameters.Clear ()
             addCustomFeedParameters cmd webLog.Id it
             do! write cmd
-            match it.Podcast with
-            | Some podcast -> do! addPodcast it.Id podcast
-            | None -> ()
         })
         |> Task.WhenAll
         |> ignore
         toUpdate
         |> List.map (fun it -> backgroundTask {
-            cmd.CommandText <- """
-                UPDATE web_log_feed
+            cmd.CommandText <-
+                "UPDATE web_log_feed
                     SET source  = @source,
-                       path   = @path
+                        path    = @path,
+                        podcast = @podcast
                   WHERE id         = @id
-                   AND web_log_id = @webLogId"""
+                    AND web_log_id = @webLogId"
             cmd.Parameters.Clear ()
             addCustomFeedParameters cmd webLog.Id it
             do! write cmd
-            let hadPodcast = Option.isSome (feeds |> List.find (fun f -> f.Id = it.Id)).Podcast
-            match it.Podcast with
-            | Some podcast ->
-                if hadPodcast then
-                    cmd.CommandText <- """
-                        UPDATE web_log_feed_podcast
-                           SET title              = @title,
-                               subtitle           = @subtitle,
-                               items_in_feed      = @itemsInFeed,
-                               summary            = @summary,
-                               displayed_author   = @displayedAuthor,
-                               email              = @email,
-                               image_url          = @imageUrl,
-                               apple_category     = @appleCategory,
-                               apple_subcategory  = @appleSubcategory,
-                               explicit           = @explicit,
-                               default_media_type = @defaultMediaType,
-                               media_base_url     = @mediaBaseUrl,
-                               podcast_guid       = @podcastGuid,
-                               funding_url        = @fundingUrl,
-                               funding_text       = @fundingText,
-                               medium             = @medium
-                         WHERE feed_id = @feedId"""
-                    cmd.Parameters.Clear ()
-                    addPodcastParameters cmd it.Id podcast
-                    do! write cmd
-                else
-                    do! addPodcast it.Id podcast
-            | None ->
-                if hadPodcast then
-                    cmd.CommandText <- "DELETE FROM web_log_feed_podcast WHERE feed_id = @id"
-                    cmd.Parameters.Clear ()
-                    cmd.Parameters.AddWithValue ("@id", CustomFeedId.toString it.Id) |> ignore
-                    do! write cmd
-                else
-                    ()
         })
         |> Task.WhenAll
         |> ignore
@@ -200,14 +126,14 @@ type SQLiteWebLogData (conn : SqliteConnection) =
     /// Add a web log
     let add webLog = backgroundTask {
         use cmd = conn.CreateCommand ()
-        cmd.CommandText <- """
-            INSERT INTO web_log (
+        cmd.CommandText <-
+            "INSERT INTO web_log (
                 id, name, slug, subtitle, default_page, posts_per_page, theme_id, url_base, time_zone, auto_htmx,
                 uploads, is_feed_enabled, feed_name, items_in_feed, is_category_enabled, is_tag_enabled, copyright
             ) VALUES (
                 @id, @name, @slug, @subtitle, @defaultPage, @postsPerPage, @themeId, @urlBase, @timeZone, @autoHtmx,
                 @uploads, @isFeedEnabled, @feedName, @itemsInFeed, @isCategoryEnabled, @isTagEnabled, @copyright
-            )"""
+            )"
         addWebLogParameters cmd webLog
         do! write cmd
         do! updateCustomFeeds webLog
@@ -232,26 +158,22 @@ type SQLiteWebLogData (conn : SqliteConnection) =
         let subQuery table = $"(SELECT id FROM {table} WHERE web_log_id = @webLogId)"
         let postSubQuery = subQuery "post"
         let pageSubQuery = subQuery "page"
-        cmd.CommandText <- $"""
+        cmd.CommandText <- $"
             DELETE FROM post_comment   WHERE post_id IN {postSubQuery};
             DELETE FROM post_revision  WHERE post_id IN {postSubQuery};
             DELETE FROM post_permalink WHERE post_id IN {postSubQuery};
-            DELETE FROM post_episode         WHERE post_id IN {postSubQuery};
             DELETE FROM post_tag       WHERE post_id IN {postSubQuery};
             DELETE FROM post_category  WHERE post_id IN {postSubQuery};
-            DELETE FROM post_meta            WHERE post_id IN {postSubQuery};
             DELETE FROM post           WHERE web_log_id = @webLogId;
             DELETE FROM page_revision  WHERE page_id IN {pageSubQuery};
             DELETE FROM page_permalink WHERE page_id IN {pageSubQuery};
-            DELETE FROM page_meta            WHERE page_id IN {pageSubQuery};
             DELETE FROM page           WHERE web_log_id = @webLogId;
             DELETE FROM category       WHERE web_log_id = @webLogId;
             DELETE FROM tag_map        WHERE web_log_id = @webLogId;
             DELETE FROM upload         WHERE web_log_id = @webLogId;
             DELETE FROM web_log_user   WHERE web_log_id = @webLogId;
-            DELETE FROM web_log_feed_podcast WHERE feed_id IN {subQuery "web_log_feed"};
             DELETE FROM web_log_feed   WHERE web_log_id = @webLogId;
-            DELETE FROM web_log              WHERE id         = @webLogId"""
+            DELETE FROM web_log        WHERE id         = @webLogId"
         do! write cmd
     }
     
@@ -284,8 +206,8 @@ type SQLiteWebLogData (conn : SqliteConnection) =
     /// Update settings for a web log
     let updateSettings webLog = backgroundTask {
         use cmd = conn.CreateCommand ()
-        cmd.CommandText <- """
-            UPDATE web_log
+        cmd.CommandText <-
+            "UPDATE web_log
                 SET name                = @name,
                     slug                = @slug,
                     subtitle            = @subtitle,
@@ -302,7 +224,7 @@ type SQLiteWebLogData (conn : SqliteConnection) =
                     is_category_enabled = @isCategoryEnabled,
                     is_tag_enabled      = @isTagEnabled,
                     copyright           = @copyright
-             WHERE id = @id"""
+              WHERE id = @id"
         addWebLogParameters cmd webLog
         do! write cmd
     }
@@ -310,16 +232,17 @@ type SQLiteWebLogData (conn : SqliteConnection) =
     /// Update RSS options for a web log
     let updateRssOptions webLog = backgroundTask {
         use cmd = conn.CreateCommand ()
-        cmd.CommandText <- """
-            UPDATE web_log
+        cmd.CommandText <-
+            "UPDATE web_log
                 SET is_feed_enabled     = @isFeedEnabled,
                     feed_name           = @feedName,
                     items_in_feed       = @itemsInFeed,
                     is_category_enabled = @isCategoryEnabled,
                     is_tag_enabled      = @isTagEnabled,
                     copyright           = @copyright
-             WHERE id = @id"""
+              WHERE id = @id"
         addWebLogRssParameters cmd webLog
+        cmd.Parameters.AddWithValue ("@id", WebLogId.toString webLog.Id) |> ignore
         do! write cmd
         do! updateCustomFeeds webLog
     }

src/MyWebLog.Data/SQLite/SQLiteWebLogUserData.fs

@@ -1,6 +1,5 @@
 namespace MyWebLog.Data.SQLite
 
-open System
 open Microsoft.Data.Sqlite
 open MyWebLog
 open MyWebLog.Data
@@ -19,11 +18,10 @@ type SQLiteWebLogUserData (conn : SqliteConnection) =
             cmd.Parameters.AddWithValue ("@lastName",      user.LastName)
             cmd.Parameters.AddWithValue ("@preferredName", user.PreferredName)
             cmd.Parameters.AddWithValue ("@passwordHash",  user.PasswordHash)
-            cmd.Parameters.AddWithValue ("@salt", user.Salt)
             cmd.Parameters.AddWithValue ("@url",           maybe user.Url)
             cmd.Parameters.AddWithValue ("@accessLevel",   AccessLevel.toString user.AccessLevel)
-            cmd.Parameters.AddWithValue ("@createdOn", user.CreatedOn)
-            cmd.Parameters.AddWithValue ("@lastSeenOn", maybe user.LastSeenOn)
+            cmd.Parameters.AddWithValue ("@createdOn",     instantParam user.CreatedOn)
+            cmd.Parameters.AddWithValue ("@lastSeenOn",    maybeInstant user.LastSeenOn)
         ] |> ignore
     
     // IMPLEMENTATION FUNCTIONS
@@ -31,14 +29,14 @@ type SQLiteWebLogUserData (conn : SqliteConnection) =
     /// Add a user
     let add user = backgroundTask {
         use cmd = conn.CreateCommand ()
-        cmd.CommandText <- """
-            INSERT INTO web_log_user (
-                id, web_log_id, email, first_name, last_name, preferred_name, password_hash, salt, url, access_level,
+        cmd.CommandText <-
+            "INSERT INTO web_log_user (
+                id, web_log_id, email, first_name, last_name, preferred_name, password_hash, url, access_level,
                 created_on, last_seen_on
             ) VALUES (
-                @id, @webLogId, @email, @firstName, @lastName, @preferredName, @passwordHash, @salt, @url, @accessLevel,
+                @id, @webLogId, @email, @firstName, @lastName, @preferredName, @passwordHash, @url, @accessLevel,
                 @createdOn, @lastSeenOn
-            )"""
+            )"
         addWebLogUserParameters cmd user
         do! write cmd
     }
@@ -93,14 +91,10 @@ type SQLiteWebLogUserData (conn : SqliteConnection) =
     /// Find the names of users by their IDs for the given web log
     let findNames webLogId userIds = backgroundTask {
         use cmd = conn.CreateCommand ()
-        cmd.CommandText <- "SELECT * FROM web_log_user WHERE web_log_id = @webLogId AND id IN ("
-        userIds
-        |> List.iteri (fun idx userId ->
-            if idx > 0 then cmd.CommandText <- $"{cmd.CommandText}, "
-            cmd.CommandText <- $"{cmd.CommandText}@id{idx}"
-            cmd.Parameters.AddWithValue ($"@id{idx}", WebLogUserId.toString userId) |> ignore)
-        cmd.CommandText <- $"{cmd.CommandText})"
+        let nameSql, nameParams = inClause "AND id" "id" WebLogUserId.toString userIds 
+        cmd.CommandText <- $"SELECT * FROM web_log_user WHERE web_log_id = @webLogId {nameSql}"
         addWebLogId cmd webLogId
+        cmd.Parameters.AddRange nameParams
         use! rdr = cmd.ExecuteReaderAsync ()
         return
             toList Map.toWebLogUser rdr
@@ -116,14 +110,14 @@ type SQLiteWebLogUserData (conn : SqliteConnection) =
     /// Set a user's last seen date/time to now
     let setLastSeen userId webLogId = backgroundTask {
         use cmd = conn.CreateCommand ()
-        cmd.CommandText <- """
-            UPDATE web_log_user
+        cmd.CommandText <-
+            "UPDATE web_log_user
                 SET last_seen_on = @lastSeenOn
               WHERE id         = @id
-               AND web_log_id = @webLogId"""
+                AND web_log_id = @webLogId"
         addWebLogId cmd webLogId
         [   cmd.Parameters.AddWithValue ("@id",         WebLogUserId.toString userId)
-          cmd.Parameters.AddWithValue ("@lastSeenOn", DateTime.UtcNow)
+            cmd.Parameters.AddWithValue ("@lastSeenOn", instantParam (Noda.now ()))
         ] |> ignore
         let! _ = cmd.ExecuteNonQueryAsync ()
         ()
@@ -132,20 +126,19 @@ type SQLiteWebLogUserData (conn : SqliteConnection) =
     /// Update a user
     let update user = backgroundTask {
         use cmd = conn.CreateCommand ()
-        cmd.CommandText <- """
-            UPDATE web_log_user
+        cmd.CommandText <-
+            "UPDATE web_log_user
                 SET email          = @email,
                     first_name     = @firstName,
                     last_name      = @lastName,
                     preferred_name = @preferredName,
                     password_hash  = @passwordHash,
-                   salt           = @salt,
                     url            = @url,
                     access_level   = @accessLevel,
                     created_on     = @createdOn,
                     last_seen_on   = @lastSeenOn
               WHERE id         = @id
-               AND web_log_id = @webLogId"""
+                AND web_log_id = @webLogId"
         addWebLogUserParameters cmd user
         do! write cmd
     }

src/MyWebLog.Data/SQLiteData.fs

@@ -2,90 +2,53 @@ namespace MyWebLog.Data
 
 open Microsoft.Data.Sqlite
 open Microsoft.Extensions.Logging
+open MyWebLog
 open MyWebLog.Data.SQLite
+open Newtonsoft.Json
+open NodaTime
 
 /// SQLite myWebLog data implementation        
-type SQLiteData (conn : SqliteConnection, log : ILogger<SQLiteData>) =
+type SQLiteData (conn : SqliteConnection, log : ILogger<SQLiteData>, ser : JsonSerializer) =
+    
+    let ensureTables () = backgroundTask {
 
-    /// Determine if the given table exists
-    let tableExists (table : string) = backgroundTask {
         use cmd = conn.CreateCommand ()
-        cmd.CommandText <- "SELECT COUNT(*) FROM sqlite_master WHERE type = 'table' AND name = @table"
-        cmd.Parameters.AddWithValue ("@table", table) |> ignore
-        let! count = count cmd
-        return count = 1
+        
+        let! tables = backgroundTask {
+            cmd.CommandText <- "SELECT name FROM sqlite_master WHERE type = 'table'"
+            let! rdr = cmd.ExecuteReaderAsync ()
+            let mutable tableList = []
+            while rdr.Read() do
+                tableList <- Map.getString "name" rdr :: tableList
+            do! rdr.CloseAsync ()
+            return tableList
         }
-    
-    /// The connection for this instance
-    member _.Conn = conn
-    
-    /// Make a SQLite connection ready to execute commends
-    static member setUpConnection (conn : SqliteConnection) = backgroundTask {
-        do! conn.OpenAsync ()
-        use cmd = conn.CreateCommand ()
-        cmd.CommandText <- "PRAGMA foreign_keys = TRUE"
-        let! _ = cmd.ExecuteNonQueryAsync ()
-        ()
-    }
-    
-    interface IData with
-    
-        member _.Category   = SQLiteCategoryData   conn
-        member _.Page       = SQLitePageData       conn
-        member _.Post       = SQLitePostData       conn
-        member _.TagMap     = SQLiteTagMapData     conn
-        member _.Theme      = SQLiteThemeData      conn
-        member _.ThemeAsset = SQLiteThemeAssetData conn
-        member _.Upload     = SQLiteUploadData     conn
-        member _.WebLog     = SQLiteWebLogData     conn
-        member _.WebLogUser = SQLiteWebLogUserData conn
-        
-        member _.StartUp () = backgroundTask {
-
-            use cmd = conn.CreateCommand ()
-            
+        let needsTable table =
+            not (List.contains table tables)
+        seq {
             // Theme tables
-            match! tableExists "theme" with
-            | true -> ()
-            | false ->
-                log.LogInformation "Creating theme table..."
-                cmd.CommandText <- """
-                    CREATE TABLE theme (
+            if needsTable "theme" then
+                "CREATE TABLE theme (
                     id       TEXT PRIMARY KEY,
                     name     TEXT NOT NULL,
-                        version  TEXT NOT NULL)"""
-                do! write cmd
-            match! tableExists "theme_template" with
-            | true -> ()
-            | false ->
-                log.LogInformation "Creating theme_template table..."
-                cmd.CommandText <- """
-                    CREATE TABLE theme_template (
+                    version  TEXT NOT NULL)"
+            if needsTable "theme_template" then
+                "CREATE TABLE theme_template (
                     theme_id  TEXT NOT NULL REFERENCES theme (id),
                     name      TEXT NOT NULL,
                     template  TEXT NOT NULL,
-                        PRIMARY KEY (theme_id, name))"""
-                do! write cmd
-            match! tableExists "theme_asset" with
-            | true -> ()
-            | false ->
-                log.LogInformation "Creating theme_asset table..."
-                cmd.CommandText <- """
-                    CREATE TABLE theme_asset (
+                    PRIMARY KEY (theme_id, name))"
+            if needsTable "theme_asset" then
+                "CREATE TABLE theme_asset (
                     theme_id    TEXT NOT NULL REFERENCES theme (id),
                     path        TEXT NOT NULL,
                     updated_on  TEXT NOT NULL,
                     data        BLOB NOT NULL,
-                        PRIMARY KEY (theme_id, path))"""
-                do! write cmd
+                    PRIMARY KEY (theme_id, path))"
             
             // Web log tables
-            match! tableExists "web_log" with
-            | true -> ()
-            | false ->
-                log.LogInformation "Creating web_log table..."
-                cmd.CommandText <- """
-                    CREATE TABLE web_log (
+            if needsTable "web_log" then
+                "CREATE TABLE web_log (
                     id                   TEXT PRIMARY KEY,
                     name                 TEXT NOT NULL,
                     slug                 TEXT NOT NULL,
@@ -103,68 +66,30 @@ type SQLiteData (conn : SqliteConnection, log : ILogger<SQLiteData>) =
                     is_category_enabled  INTEGER NOT NULL DEFAULT 0,
                     is_tag_enabled       INTEGER NOT NULL DEFAULT 0,
                     copyright            TEXT);
-                    CREATE INDEX web_log_theme_idx ON web_log (theme_id)"""
-                do! write cmd
-            match! tableExists "web_log_feed" with
-            | true -> ()
-            | false ->
-                log.LogInformation "Creating web_log_feed table..."
-                cmd.CommandText <- """
-                    CREATE TABLE web_log_feed (
+                CREATE INDEX web_log_theme_idx ON web_log (theme_id)"
+            if needsTable "web_log_feed" then
+                "CREATE TABLE web_log_feed (
                     id          TEXT PRIMARY KEY,
                     web_log_id  TEXT NOT NULL REFERENCES web_log (id),
                     source      TEXT NOT NULL,
-                        path        TEXT NOT NULL);
-                    CREATE INDEX web_log_feed_web_log_idx ON web_log_feed (web_log_id)"""
-                do! write cmd
-            match! tableExists "web_log_feed_podcast" with
-            | true -> ()
-            | false ->
-                log.LogInformation "Creating web_log_feed_podcast table..."
-                cmd.CommandText <- """
-                    CREATE TABLE web_log_feed_podcast (
-                        feed_id             TEXT PRIMARY KEY REFERENCES web_log_feed (id),
-                        title               TEXT NOT NULL,
-                        subtitle            TEXT,
-                        items_in_feed       INTEGER NOT NULL,
-                        summary             TEXT NOT NULL,
-                        displayed_author    TEXT NOT NULL,
-                        email               TEXT NOT NULL,
-                        image_url           TEXT NOT NULL,
-                        apple_category      TEXT NOT NULL,
-                        apple_subcategory   TEXT,
-                        explicit            TEXT NOT NULL,
-                        default_media_type  TEXT,
-                        media_base_url      TEXT,
-                        podcast_guid        TEXT,
-                        funding_url         TEXT,
-                        funding_text        TEXT,
-                        medium              TEXT)"""
-                do! write cmd
+                    path        TEXT NOT NULL,
+                    podcast     TEXT);
+                CREATE INDEX web_log_feed_web_log_idx ON web_log_feed (web_log_id)"
             
             // Category table
-            match! tableExists "category" with
-            | true -> ()
-            | false ->
-                log.LogInformation "Creating category table..."
-                cmd.CommandText <- """
-                    CREATE TABLE category (
+            if needsTable "category" then
+                "CREATE TABLE category (
                     id           TEXT PRIMARY KEY,
                     web_log_id   TEXT NOT NULL REFERENCES web_log (id),
                     name         TEXT NOT NULL,
                     slug         TEXT NOT NULL,
                     description  TEXT,
                     parent_id    TEXT);
-                    CREATE INDEX category_web_log_idx ON category (web_log_id)"""
-                do! write cmd
+                CREATE INDEX category_web_log_idx ON category (web_log_id)"
             
             // Web log user table
-            match! tableExists "web_log_user" with
-            | true -> ()
-            | false ->
-                log.LogInformation "Creating web_log_user table..."
-                cmd.CommandText <- """
-                    CREATE TABLE web_log_user (
+            if needsTable "web_log_user" then
+                "CREATE TABLE web_log_user (
                     id              TEXT PRIMARY KEY,
                     web_log_id      TEXT NOT NULL REFERENCES web_log (id),
                     email           TEXT NOT NULL,
@@ -172,22 +97,16 @@ type SQLiteData (conn : SqliteConnection, log : ILogger<SQLiteData>) =
                     last_name       TEXT NOT NULL,
                     preferred_name  TEXT NOT NULL,
                     password_hash   TEXT NOT NULL,
-                        salt            TEXT NOT NULL,
                     url             TEXT,
                     access_level    TEXT NOT NULL,
                     created_on      TEXT NOT NULL,
                     last_seen_on    TEXT);
                 CREATE INDEX web_log_user_web_log_idx ON web_log_user (web_log_id);
-                    CREATE INDEX web_log_user_email_idx   ON web_log_user (web_log_id, email)"""
-                do! write cmd
+                CREATE INDEX web_log_user_email_idx   ON web_log_user (web_log_id, email)"
             
             // Page tables
-            match! tableExists "page" with
-            | true -> ()
-            | false ->
-                log.LogInformation "Creating page table..."
-                cmd.CommandText <- """
-                    CREATE TABLE page (
+            if needsTable "page" then
+                "CREATE TABLE page (
                     id               TEXT PRIMARY KEY,
                     web_log_id       TEXT NOT NULL REFERENCES web_log (id),
                     author_id        TEXT NOT NULL REFERENCES web_log_user (id),
@@ -197,51 +116,26 @@ type SQLiteData (conn : SqliteConnection, log : ILogger<SQLiteData>) =
                     updated_on       TEXT NOT NULL,
                     is_in_page_list  INTEGER NOT NULL DEFAULT 0,
                     template         TEXT,
-                        page_text        TEXT NOT NULL);
+                    page_text        TEXT NOT NULL,
+                    meta_items       TEXT);
                 CREATE INDEX page_web_log_idx   ON page (web_log_id);
                 CREATE INDEX page_author_idx    ON page (author_id);
-                    CREATE INDEX page_permalink_idx ON page (web_log_id, permalink)"""
-                do! write cmd
-            match! tableExists "page_meta" with
-            | true -> ()
-            | false ->
-                log.LogInformation "Creating page_meta table..."
-                cmd.CommandText <- """
-                    CREATE TABLE page_meta (
-                        page_id  TEXT NOT NULL REFERENCES page (id),
-                        name     TEXT NOT NULL,
-                        value    TEXT NOT NULL,
-                        PRIMARY KEY (page_id, name, value))"""
-                do! write cmd
-            match! tableExists "page_permalink" with
-            | true -> ()
-            | false ->
-                log.LogInformation "Creating page_permalink table..."
-                cmd.CommandText <- """
-                    CREATE TABLE page_permalink (
+                CREATE INDEX page_permalink_idx ON page (web_log_id, permalink)"
+            if needsTable "page_permalink" then
+                "CREATE TABLE page_permalink (
                     page_id    TEXT NOT NULL REFERENCES page (id),
                     permalink  TEXT NOT NULL,
-                        PRIMARY KEY (page_id, permalink))"""
-                do! write cmd
-            match! tableExists "page_revision" with
-            | true -> ()
-            | false ->
-                log.LogInformation "Creating page_revision table..."
-                cmd.CommandText <- """
-                    CREATE TABLE page_revision (
+                    PRIMARY KEY (page_id, permalink))"
+            if needsTable "page_revision" then
+                "CREATE TABLE page_revision (
                     page_id        TEXT NOT NULL REFERENCES page (id),
                     as_of          TEXT NOT NULL,
                     revision_text  TEXT NOT NULL,
-                        PRIMARY KEY (page_id, as_of))"""
-                do! write cmd
+                    PRIMARY KEY (page_id, as_of))"
             
             // Post tables
-            match! tableExists "post" with
-            | true -> ()
-            | false ->
-                log.LogInformation "Creating post table..."
-                cmd.CommandText <- """
-                    CREATE TABLE post (
+            if needsTable "post" then
+                "CREATE TABLE post (
                     id            TEXT PRIMARY KEY,
                     web_log_id    TEXT NOT NULL REFERENCES web_log (id),
                     author_id     TEXT NOT NULL REFERENCES web_log_user (id),
@@ -251,96 +145,37 @@ type SQLiteData (conn : SqliteConnection, log : ILogger<SQLiteData>) =
                     published_on  TEXT,
                     updated_on    TEXT NOT NULL,
                     template      TEXT,
-                        post_text     TEXT NOT NULL);
+                    post_text     TEXT NOT NULL,
+                    meta_items    TEXT,
+                    episode       TEXT);
                 CREATE INDEX post_web_log_idx   ON post (web_log_id);
                 CREATE INDEX post_author_idx    ON post (author_id);
                 CREATE INDEX post_status_idx    ON post (web_log_id, status, updated_on);
-                    CREATE INDEX post_permalink_idx ON post (web_log_id, permalink)"""
-                do! write cmd
-            match! tableExists "post_category" with
-            | true -> ()
-            | false ->
-                log.LogInformation "Creating post_category table..."
-                cmd.CommandText <- """
-                    CREATE TABLE post_category (
+                CREATE INDEX post_permalink_idx ON post (web_log_id, permalink)"
+            if needsTable "post_category" then
+                "CREATE TABLE post_category (
                     post_id      TEXT NOT NULL REFERENCES post (id),
                     category_id  TEXT NOT NULL REFERENCES category (id),
                     PRIMARY KEY (post_id, category_id));
-                    CREATE INDEX post_category_category_idx ON post_category (category_id)"""
-                do! write cmd
-            match! tableExists "post_episode" with
-            | true -> ()
-            | false ->
-                log.LogInformation "Creating post_episode table..."
-                cmd.CommandText <- """
-                    CREATE TABLE post_episode (
-                        post_id              TEXT PRIMARY KEY REFERENCES post(id),
-                        media                TEXT NOT NULL,
-                        length               INTEGER NOT NULL,
-                        duration             TEXT,
-                        media_type           TEXT,
-                        image_url            TEXT,
-                        subtitle             TEXT,
-                        explicit             TEXT,
-                        chapter_file         TEXT,
-                        chapter_type         TEXT,
-                        transcript_url       TEXT,
-                        transcript_type      TEXT,
-                        transcript_lang      TEXT,
-                        transcript_captions  INTEGER,
-                        season_number        INTEGER,
-                        season_description   TEXT,
-                        episode_number       TEXT,
-                        episode_description  TEXT)"""
-                do! write cmd
-            match! tableExists "post_tag" with
-            | true -> ()
-            | false ->
-                log.LogInformation "Creating post_tag table..."
-                cmd.CommandText <- """
-                    CREATE TABLE post_tag (
+                CREATE INDEX post_category_category_idx ON post_category (category_id)"
+            if needsTable "post_tag" then
+                "CREATE TABLE post_tag (
                     post_id  TEXT NOT NULL REFERENCES post (id),
                     tag      TEXT NOT NULL,
-                        PRIMARY KEY (post_id, tag))"""
-                do! write cmd
-            match! tableExists "post_meta" with
-            | true -> ()
-            | false ->
-                log.LogInformation "Creating post_meta table..."
-                cmd.CommandText <- """
-                    CREATE TABLE post_meta (
-                        post_id  TEXT NOT NULL REFERENCES post (id),
-                        name     TEXT NOT NULL,
-                        value    TEXT NOT NULL,
-                        PRIMARY KEY (post_id, name, value))"""
-                do! write cmd
-            match! tableExists "post_permalink" with
-            | true -> ()
-            | false ->
-                log.LogInformation "Creating post_permalink table..."
-                cmd.CommandText <- """
-                    CREATE TABLE post_permalink (
+                    PRIMARY KEY (post_id, tag))"
+            if needsTable "post_permalink" then
+                "CREATE TABLE post_permalink (
                     post_id    TEXT NOT NULL REFERENCES post (id),
                     permalink  TEXT NOT NULL,
-                        PRIMARY KEY (post_id, permalink))"""
-                do! write cmd
-            match! tableExists "post_revision" with
-            | true -> ()
-            | false ->
-                log.LogInformation "Creating post_revision table..."
-                cmd.CommandText <- """
-                    CREATE TABLE post_revision (
+                    PRIMARY KEY (post_id, permalink))"
+            if needsTable "post_revision" then
+                "CREATE TABLE post_revision (
                     post_id        TEXT NOT NULL REFERENCES post (id),
                     as_of          TEXT NOT NULL,
                     revision_text  TEXT NOT NULL,
-                        PRIMARY KEY (post_id, as_of))"""
-                do! write cmd
-            match! tableExists "post_comment" with
-            | true -> ()
-            | false ->
-                log.LogInformation "Creating post_comment table..."
-                cmd.CommandText <- """
-                    CREATE TABLE post_comment (
+                    PRIMARY KEY (post_id, as_of))"
+            if needsTable "post_comment" then
+                "CREATE TABLE post_comment (
                     id              TEXT PRIMARY KEY,
                     post_id         TEXT NOT NULL REFERENCES post(id),
                     in_reply_to_id  TEXT,
@@ -350,36 +185,397 @@ type SQLiteData (conn : SqliteConnection, log : ILogger<SQLiteData>) =
                     status          TEXT NOT NULL,
                     posted_on       TEXT NOT NULL,
                     comment_text    TEXT NOT NULL);
-                    CREATE INDEX post_comment_post_idx ON post_comment (post_id)"""
-                do! write cmd
+                CREATE INDEX post_comment_post_idx ON post_comment (post_id)"
             
             // Tag map table
-            match! tableExists "tag_map" with
-            | true -> ()
-            | false ->
-                log.LogInformation "Creating tag_map table..."
-                cmd.CommandText <- """
-                    CREATE TABLE tag_map (
+            if needsTable "tag_map" then
+                "CREATE TABLE tag_map (
                     id          TEXT PRIMARY KEY,
                     web_log_id  TEXT NOT NULL REFERENCES web_log (id),
                     tag         TEXT NOT NULL,
                     url_value   TEXT NOT NULL);
-                    CREATE INDEX tag_map_web_log_idx ON tag_map (web_log_id)"""
-                do! write cmd
+                CREATE INDEX tag_map_web_log_idx ON tag_map (web_log_id)"
             
             // Uploaded file table
-            match! tableExists "upload" with
-            | true -> ()
-            | false ->
-                log.LogInformation "Creating upload table..."
-                cmd.CommandText <- """
-                    CREATE TABLE upload (
+            if needsTable "upload" then
+                "CREATE TABLE upload (
                     id          TEXT PRIMARY KEY,
                     web_log_id  TEXT NOT NULL REFERENCES web_log (id),
                     path        TEXT NOT NULL,
                     updated_on  TEXT NOT NULL,
                     data        BLOB NOT NULL);
                 CREATE INDEX upload_web_log_idx ON upload (web_log_id);
-                    CREATE INDEX upload_path_idx    ON upload (web_log_id, path)"""
+                CREATE INDEX upload_path_idx    ON upload (web_log_id, path)"
+            
+            // Database version table
+            if needsTable "db_version" then
+                "CREATE TABLE db_version (id TEXT PRIMARY KEY);
+                 INSERT INTO db_version VALUES ('v2-rc1')"
+        }
+        |> Seq.map (fun sql ->
+            log.LogInformation $"Creating {(sql.Split ' ')[2]} table..."
+            cmd.CommandText <- sql
+            write cmd |> Async.AwaitTask |> Async.RunSynchronously)
+        |> List.ofSeq
+        |> ignore
+    }
+    
+    /// Set the database version to the specified version
+    let setDbVersion version = backgroundTask {
+        use cmd = conn.CreateCommand ()
+        cmd.CommandText <- $"DELETE FROM db_version; INSERT INTO db_version VALUES ('%s{version}')"
         do! write cmd
     }
+    
+    /// Implement the changes between v2-rc1 and v2-rc2
+    let migrateV2Rc1ToV2Rc2 () = backgroundTask {
+        let logStep = Utils.logMigrationStep log "v2-rc1 to v2-rc2"
+        // Move meta items, podcast settings, and episode details to JSON-encoded text fields
+        use cmd = conn.CreateCommand ()
+        logStep "Adding new columns"
+        cmd.CommandText <-
+            "ALTER TABLE web_log_feed ADD COLUMN podcast    TEXT;
+             ALTER TABLE page         ADD COLUMN meta_items TEXT;
+             ALTER TABLE post         ADD COLUMN meta_items TEXT;
+             ALTER TABLE post         ADD COLUMN episode    TEXT"
+        do! write cmd
+        logStep "Migrating meta items"
+        let migrateMeta entity = backgroundTask {
+            cmd.CommandText <- $"SELECT * FROM %s{entity}_meta"
+            use! metaRdr = cmd.ExecuteReaderAsync ()
+            let allMetas =
+                seq {
+                    while metaRdr.Read () do
+                        Map.getString $"{entity}_id" metaRdr,
+                        { Name = Map.getString "name" metaRdr; Value = Map.getString "value" metaRdr }
+                } |> List.ofSeq
+            metaRdr.Close ()
+            let metas =
+                allMetas
+                |> List.map fst
+                |> List.distinct
+                |> List.map (fun it -> it, allMetas |> List.filter (fun meta -> fst meta = it))
+            metas
+            |> List.iter (fun (entityId, items) ->
+                cmd.CommandText <-
+                    "UPDATE post
+                        SET meta_items = @metaItems
+                      WHERE id = @postId"
+                [   cmd.Parameters.AddWithValue ("@metaItems", Utils.serialize ser items)
+                    cmd.Parameters.AddWithValue ("@id",        entityId) ] |> ignore
+                let _ = cmd.ExecuteNonQuery ()
+                cmd.Parameters.Clear ())
+        }
+        do! migrateMeta "page"
+        do! migrateMeta "post"
+        logStep "Migrating podcasts and episodes"
+        cmd.CommandText <- "SELECT * FROM web_log_feed_podcast"
+        use! podcastRdr = cmd.ExecuteReaderAsync ()
+        let podcasts =
+            seq {
+                while podcastRdr.Read () do
+                    CustomFeedId (Map.getString "feed_id" podcastRdr),
+                    {   Title             = Map.getString "title"              podcastRdr
+                        Subtitle          = Map.tryString "subtitle"           podcastRdr
+                        ItemsInFeed       = Map.getInt    "items_in_feed"      podcastRdr
+                        Summary           = Map.getString "summary"            podcastRdr
+                        DisplayedAuthor   = Map.getString "displayed_author"   podcastRdr
+                        Email             = Map.getString "email"              podcastRdr
+                        ImageUrl          = Map.getString "image_url"          podcastRdr |> Permalink
+                        AppleCategory     = Map.getString "apple_category"     podcastRdr
+                        AppleSubcategory  = Map.tryString "apple_subcategory"  podcastRdr
+                        Explicit          = Map.getString "explicit"           podcastRdr |> ExplicitRating.parse
+                        DefaultMediaType  = Map.tryString "default_media_type" podcastRdr
+                        MediaBaseUrl      = Map.tryString "media_base_url"     podcastRdr
+                        PodcastGuid       = Map.tryGuid   "podcast_guid"       podcastRdr
+                        FundingUrl        = Map.tryString "funding_url"        podcastRdr
+                        FundingText       = Map.tryString "funding_text"       podcastRdr
+                        Medium            = Map.tryString "medium"             podcastRdr
+                                            |> Option.map PodcastMedium.parse
+                    }
+            } |> List.ofSeq
+        podcastRdr.Close ()
+        podcasts
+        |> List.iter (fun (feedId, podcast) ->
+            cmd.CommandText <- "UPDATE web_log_feed SET podcast = @podcast WHERE id = @id"
+            [   cmd.Parameters.AddWithValue ("@podcast", Utils.serialize ser podcast)
+                cmd.Parameters.AddWithValue ("@id", CustomFeedId.toString feedId) ] |> ignore
+            let _ = cmd.ExecuteNonQuery ()
+            cmd.Parameters.Clear ())
+        cmd.CommandText <- "SELECT * FROM post_episode"
+        use! epRdr = cmd.ExecuteReaderAsync ()
+        let episodes =
+            seq {
+                while epRdr.Read () do
+                    PostId (Map.getString "post_id" epRdr),
+                    {   Media              = Map.getString   "media"               epRdr
+                        Length             = Map.getLong     "length"              epRdr
+                        Duration           = Map.tryTimeSpan "duration"            epRdr
+                                             |> Option.map Duration.FromTimeSpan
+                        MediaType          = Map.tryString   "media_type"          epRdr
+                        ImageUrl           = Map.tryString   "image_url"           epRdr
+                        Subtitle           = Map.tryString   "subtitle"            epRdr
+                        Explicit           = Map.tryString   "explicit"            epRdr
+                                             |> Option.map ExplicitRating.parse
+                        ChapterFile        = Map.tryString   "chapter_file"        epRdr
+                        ChapterType        = Map.tryString   "chapter_type"        epRdr
+                        TranscriptUrl      = Map.tryString   "transcript_url"      epRdr
+                        TranscriptType     = Map.tryString   "transcript_type"     epRdr
+                        TranscriptLang     = Map.tryString   "transcript_lang"     epRdr
+                        TranscriptCaptions = Map.tryBoolean  "transcript_captions" epRdr
+                        SeasonNumber       = Map.tryInt      "season_number"       epRdr
+                        SeasonDescription  = Map.tryString   "season_description"  epRdr
+                        EpisodeNumber      = Map.tryString   "episode_number"      epRdr
+                                             |> Option.map System.Double.Parse
+                        EpisodeDescription = Map.tryString   "episode_description" epRdr
+                    }
+            } |> List.ofSeq
+        epRdr.Close ()
+        episodes
+        |> List.iter (fun (postId, episode) ->
+            cmd.CommandText <- "UPDATE post SET episode = @episode WHERE id = @id"
+            [   cmd.Parameters.AddWithValue ("@episode", Utils.serialize ser episode)
+                cmd.Parameters.AddWithValue ("@id",      PostId.toString postId) ] |> ignore
+            let _ = cmd.ExecuteNonQuery ()
+            cmd.Parameters.Clear ())
+        
+        logStep "Migrating dates/times"
+        let inst (dt : System.DateTime) =
+            System.DateTime (dt.Ticks, System.DateTimeKind.Utc)
+            |> (Instant.FromDateTimeUtc >> Noda.toSecondsPrecision)
+        // page.updated_on, page.published_on
+        cmd.CommandText <- "SELECT id, updated_on, published_on FROM page"
+        use! pageRdr = cmd.ExecuteReaderAsync ()
+        let toUpdate =
+            seq {
+                while pageRdr.Read () do
+                    Map.getString "id" pageRdr,
+                    inst (Map.getDateTime "updated_on"   pageRdr),
+                    inst (Map.getDateTime "published_on" pageRdr)
+            } |> List.ofSeq
+        pageRdr.Close ()
+        cmd.CommandText <- "UPDATE page SET updated_on = @updatedOn, published_on = @publishedOn WHERE id = @id"
+        [   cmd.Parameters.Add ("@id",          SqliteType.Text)
+            cmd.Parameters.Add ("@updatedOn",   SqliteType.Text)
+            cmd.Parameters.Add ("@publishedOn", SqliteType.Text)
+        ] |> ignore
+        toUpdate
+        |> List.iter (fun (pageId, updatedOn, publishedOn) ->
+            cmd.Parameters["@id"         ].Value <- pageId
+            cmd.Parameters["@updatedOn"  ].Value <- instantParam updatedOn
+            cmd.Parameters["@publishedOn"].Value <- instantParam publishedOn
+            let _ = cmd.ExecuteNonQuery ()
+            ())
+        cmd.Parameters.Clear ()
+        // page_revision.as_of
+        cmd.CommandText <- "SELECT * FROM page_revision"
+        use! pageRevRdr = cmd.ExecuteReaderAsync ()
+        let toUpdate =
+            seq {
+                while pageRevRdr.Read () do
+                    let asOf = Map.getDateTime "as_of" pageRevRdr
+                    Map.getString "page_id" pageRevRdr, asOf, inst asOf, Map.getString "revision_text" pageRevRdr
+            } |> List.ofSeq
+        pageRevRdr.Close ()
+        cmd.CommandText <-
+            "DELETE FROM page_revision WHERE page_id = @pageId AND as_of = @oldAsOf;
+             INSERT INTO page_revision (page_id, as_of, revision_text) VALUES (@pageId, @asOf, @text)"
+        [   cmd.Parameters.Add ("@pageId",  SqliteType.Text)
+            cmd.Parameters.Add ("@oldAsOf", SqliteType.Text)
+            cmd.Parameters.Add ("@asOf",    SqliteType.Text)
+            cmd.Parameters.Add ("@text",    SqliteType.Text)
+        ] |> ignore
+        toUpdate
+        |> List.iter (fun (pageId, oldAsOf, asOf, text) ->
+            cmd.Parameters["@pageId" ].Value <- pageId
+            cmd.Parameters["@oldAsOf"].Value <- oldAsOf
+            cmd.Parameters["@asOf"   ].Value <- instantParam asOf
+            cmd.Parameters["@text"   ].Value <- text
+            let _ = cmd.ExecuteNonQuery ()
+            ())
+        cmd.Parameters.Clear ()
+        // post.updated_on, post.published_on (opt)
+        cmd.CommandText <- "SELECT id, updated_on, published_on FROM post"
+        use! postRdr = cmd.ExecuteReaderAsync ()
+        let toUpdate =
+            seq {
+                while postRdr.Read () do
+                    Map.getString "id" postRdr,
+                    inst (Map.getDateTime "updated_on"   postRdr),
+                    (Map.tryDateTime "published_on" postRdr |> Option.map inst)
+            } |> List.ofSeq
+        postRdr.Close ()
+        cmd.CommandText <- "UPDATE post SET updated_on = @updatedOn, published_on = @publishedOn WHERE id = @id"
+        [   cmd.Parameters.Add ("@id",          SqliteType.Text)
+            cmd.Parameters.Add ("@updatedOn",   SqliteType.Text)
+            cmd.Parameters.Add ("@publishedOn", SqliteType.Text)
+        ] |> ignore
+        toUpdate
+        |> List.iter (fun (postId, updatedOn, publishedOn) ->
+            cmd.Parameters["@id"         ].Value <- postId
+            cmd.Parameters["@updatedOn"  ].Value <- instantParam updatedOn
+            cmd.Parameters["@publishedOn"].Value <- maybeInstant publishedOn
+            let _ = cmd.ExecuteNonQuery ()
+            ())
+        cmd.Parameters.Clear ()
+        // post_revision.as_of
+        cmd.CommandText <- "SELECT * FROM post_revision"
+        use! postRevRdr = cmd.ExecuteReaderAsync ()
+        let toUpdate =
+            seq {
+                while postRevRdr.Read () do
+                    let asOf = Map.getDateTime "as_of" postRevRdr
+                    Map.getString "post_id" postRevRdr, asOf, inst asOf, Map.getString "revision_text" postRevRdr
+            } |> List.ofSeq
+        postRevRdr.Close ()
+        cmd.CommandText <-
+            "DELETE FROM post_revision WHERE post_id = @postId AND as_of = @oldAsOf;
+             INSERT INTO post_revision (post_id, as_of, revision_text) VALUES (@postId, @asOf, @text)"
+        [   cmd.Parameters.Add ("@postId",  SqliteType.Text)
+            cmd.Parameters.Add ("@oldAsOf", SqliteType.Text)
+            cmd.Parameters.Add ("@asOf",    SqliteType.Text)
+            cmd.Parameters.Add ("@text",    SqliteType.Text)
+        ] |> ignore
+        toUpdate
+        |> List.iter (fun (postId, oldAsOf, asOf, text) ->
+            cmd.Parameters["@postId" ].Value <- postId
+            cmd.Parameters["@oldAsOf"].Value <- oldAsOf
+            cmd.Parameters["@asOf"   ].Value <- instantParam asOf
+            cmd.Parameters["@text"   ].Value <- text
+            let _ = cmd.ExecuteNonQuery ()
+            ())
+        cmd.Parameters.Clear ()
+        // theme_asset.updated_on
+        cmd.CommandText <- "SELECT theme_id, path, updated_on FROM theme_asset"
+        use! assetRdr = cmd.ExecuteReaderAsync ()
+        let toUpdate =
+            seq {
+                while assetRdr.Read () do
+                    Map.getString "theme_id" assetRdr, Map.getString "path" assetRdr,
+                    inst (Map.getDateTime "updated_on" assetRdr)
+            } |> List.ofSeq
+        assetRdr.Close ()
+        cmd.CommandText <- "UPDATE theme_asset SET updated_on = @updatedOn WHERE theme_id = @themeId AND path = @path"
+        [   cmd.Parameters.Add ("@updatedOn", SqliteType.Text)
+            cmd.Parameters.Add ("@themeId",   SqliteType.Text)
+            cmd.Parameters.Add ("@path",      SqliteType.Text)
+        ] |> ignore
+        toUpdate
+        |> List.iter (fun (themeId, path, updatedOn) ->
+            cmd.Parameters["@themeId"  ].Value <- themeId
+            cmd.Parameters["@path"     ].Value <- path
+            cmd.Parameters["@updatedOn"].Value <- instantParam updatedOn
+            let _ = cmd.ExecuteNonQuery ()
+            ())
+        cmd.Parameters.Clear ()
+        // upload.updated_on
+        cmd.CommandText <- "SELECT id, updated_on FROM upload"
+        use! upRdr = cmd.ExecuteReaderAsync ()
+        let toUpdate =
+            seq {
+                while upRdr.Read () do
+                    Map.getString "id" upRdr, inst (Map.getDateTime "updated_on" upRdr)
+            } |> List.ofSeq
+        upRdr.Close ()
+        cmd.CommandText <- "UPDATE upload SET updated_on = @updatedOn WHERE id = @id"
+        [   cmd.Parameters.Add ("@updatedOn", SqliteType.Text)
+            cmd.Parameters.Add ("@id",        SqliteType.Text)
+        ] |> ignore
+        toUpdate
+        |> List.iter (fun (upId, updatedOn) ->
+            cmd.Parameters["@id"       ].Value <- upId
+            cmd.Parameters["@updatedOn"].Value <- instantParam updatedOn
+            let _ = cmd.ExecuteNonQuery ()
+            ())
+        cmd.Parameters.Clear ()
+        // web_log_user.created_on, web_log_user.last_seen_on (opt)
+        cmd.CommandText <- "SELECT id, created_on, last_seen_on FROM web_log_user"
+        use! userRdr = cmd.ExecuteReaderAsync ()
+        let toUpdate =
+            seq {
+                while userRdr.Read () do
+                    Map.getString "id" userRdr,
+                    inst (Map.getDateTime "created_on" userRdr),
+                    (Map.tryDateTime "last_seen_on" userRdr |> Option.map inst)
+            } |> List.ofSeq
+        userRdr.Close ()
+        cmd.CommandText <- "UPDATE web_log_user SET created_on = @createdOn, last_seen_on = @lastSeenOn WHERE id = @id"
+        [   cmd.Parameters.Add ("@id",         SqliteType.Text)
+            cmd.Parameters.Add ("@createdOn",  SqliteType.Text)
+            cmd.Parameters.Add ("@lastSeenOn", SqliteType.Text)
+        ] |> ignore
+        toUpdate
+        |> List.iter (fun (userId, createdOn, lastSeenOn) ->
+            cmd.Parameters["@id"        ].Value <- userId
+            cmd.Parameters["@createdOn" ].Value <- instantParam createdOn
+            cmd.Parameters["@lastSeenOn"].Value <- maybeInstant lastSeenOn
+            let _ = cmd.ExecuteNonQuery ()
+            ())
+        cmd.Parameters.Clear ()
+        
+        conn.Close ()
+        conn.Open ()
+        
+        logStep "Dropping old tables and columns"
+        cmd.CommandText <-
+            "ALTER TABLE web_log_user DROP COLUMN salt;
+             DROP  TABLE post_episode;
+             DROP  TABLE post_meta;
+             DROP  TABLE page_meta;
+             DROP  TABLE web_log_feed_podcast"
+        do! write cmd
+        
+        logStep "Setting database version to v2-rc2"
+        do! setDbVersion "v2-rc2"
+    }
+    
+    /// Migrate data among versions (up only)
+    let migrate version = backgroundTask {
+        
+        match version with
+        | Some v when v = "v2-rc2" -> ()
+        | Some v when v = "v2-rc1" -> do! migrateV2Rc1ToV2Rc2 ()
+        | Some _
+        | None ->
+            log.LogWarning $"Unknown database version; assuming {Utils.currentDbVersion}"
+            do! setDbVersion Utils.currentDbVersion
+    }
+
+    /// The connection for this instance
+    member _.Conn = conn
+    
+    /// Make a SQLite connection ready to execute commends
+    static member setUpConnection (conn : SqliteConnection) = backgroundTask {
+        do! conn.OpenAsync ()
+        use cmd = conn.CreateCommand ()
+        cmd.CommandText <- "PRAGMA foreign_keys = TRUE"
+        let! _ = cmd.ExecuteNonQueryAsync ()
+        ()
+    }
+    
+    interface IData with
+    
+        member _.Category   = SQLiteCategoryData   conn
+        member _.Page       = SQLitePageData       (conn, ser)
+        member _.Post       = SQLitePostData       (conn, ser)
+        member _.TagMap     = SQLiteTagMapData     conn
+        member _.Theme      = SQLiteThemeData      conn
+        member _.ThemeAsset = SQLiteThemeAssetData conn
+        member _.Upload     = SQLiteUploadData     conn
+        member _.WebLog     = SQLiteWebLogData     (conn, ser)
+        member _.WebLogUser = SQLiteWebLogUserData conn
+        
+        member _.Serializer = ser
+        
+        member _.StartUp () = backgroundTask {
+            do! ensureTables ()
+            
+            use cmd = conn.CreateCommand ()
+            cmd.CommandText <- "SELECT id FROM db_version"
+            use! rdr = cmd.ExecuteReaderAsync ()
+            let version = if rdr.Read () then Some (Map.getString "id" rdr) else None
+            match version with
+            | Some v when v = "v2-rc2" -> ()
+            | Some _
+            | None -> do! migrate version
+        }

src/MyWebLog.Data/Utils.fs

@@ -5,6 +5,9 @@ module internal MyWebLog.Data.Utils
 open MyWebLog
 open MyWebLog.ViewModels
 
+/// The current database version
+let currentDbVersion = "v2-rc2"
+
 /// Create a category hierarchy from the given list of categories
 let rec orderByHierarchy (cats : Category list) parentId slugBase parentNames = seq {
     for cat in cats |> List.filter (fun c -> c.ParentId = parentId) do
@@ -20,3 +23,36 @@ let rec orderByHierarchy (cats : Category list) parentId slugBase parentNames =
         yield! orderByHierarchy cats (Some cat.Id) (Some fullSlug) ([ cat.Name ] |> List.append parentNames)
 }
 
+/// Get lists of items removed from and added to the given lists
+let diffLists<'T, 'U when 'U : equality> oldItems newItems (f : 'T -> 'U) =
+    let diff compList = fun item -> not (compList |> List.exists (fun other -> f item = f other))
+    List.filter (diff newItems) oldItems, List.filter (diff oldItems) newItems
+
+/// Find meta items added and removed
+let diffMetaItems (oldItems : MetaItem list) newItems =
+    diffLists oldItems newItems (fun item -> $"{item.Name}|{item.Value}")
+
+/// Find the permalinks added and removed
+let diffPermalinks oldLinks newLinks =
+    diffLists oldLinks newLinks Permalink.toString
+
+/// Find the revisions added and removed
+let diffRevisions oldRevs newRevs =
+    diffLists oldRevs newRevs (fun (rev : Revision) -> $"{rev.AsOf.ToUnixTimeTicks ()}|{MarkupText.toString rev.Text}")
+
+open MyWebLog.Converters
+open Newtonsoft.Json
+
+/// Serialize an object to JSON
+let serialize<'T> ser (item : 'T) =
+    JsonConvert.SerializeObject (item, Json.settings ser)
+
+/// Deserialize a JSON string 
+let deserialize<'T> (ser : JsonSerializer) value =
+    JsonConvert.DeserializeObject<'T> (value, Json.settings ser)
+
+open Microsoft.Extensions.Logging
+
+/// Log a migration step
+let logMigrationStep<'T> (log : ILogger<'T>) migration message =
+    log.LogInformation $"Migrating %s{migration}: %s{message}"

src/MyWebLog.Domain/DataTypes.fs

@@ -2,6 +2,7 @@
 
 open System
 open MyWebLog
+open NodaTime
 
 /// A category under which a post may be identified
 [<CLIMutable; NoComparison; NoEquality>]
@@ -64,7 +65,7 @@ type Comment =
         Status : CommentStatus
 
         /// When the comment was posted
-        PostedOn : DateTime
+        PostedOn : Instant
 
         /// The text of the comment
         Text : string
@@ -82,7 +83,7 @@ module Comment =
             Email       = ""
             Url         = None
             Status      = Pending
-            PostedOn    = DateTime.UtcNow
+            PostedOn    = Noda.epoch
             Text        = ""
         }
 
@@ -106,10 +107,10 @@ type Page =
         Permalink : Permalink
 
         /// When this page was published
-        PublishedOn : DateTime
+        PublishedOn : Instant
 
         /// When this page was last updated
-        UpdatedOn : DateTime
+        UpdatedOn : Instant
 
         /// Whether this page shows as part of the web log's navigation
         IsInPageList : bool
@@ -140,8 +141,8 @@ module Page =
             AuthorId        = WebLogUserId.empty
             Title           = ""
             Permalink       = Permalink.empty
-            PublishedOn     = DateTime.MinValue
-            UpdatedOn       = DateTime.MinValue
+            PublishedOn     = Noda.epoch
+            UpdatedOn       = Noda.epoch
             IsInPageList    = false
             Template        = None
             Text            = ""
@@ -173,10 +174,10 @@ type Post =
         Permalink : Permalink
 
         /// The instant on which the post was originally published
-        PublishedOn : DateTime option
+        PublishedOn : Instant option
 
         /// The instant on which the post was last updated
-        UpdatedOn : DateTime
+        UpdatedOn : Instant
 
         /// The template to use in displaying the post
         Template : string option
@@ -215,7 +216,7 @@ module Post =
             Title           = ""
             Permalink       = Permalink.empty
             PublishedOn     = None
-            UpdatedOn       = DateTime.MinValue
+            UpdatedOn       = Noda.epoch
             Text            = ""
             Template        = None
             CategoryIds     = []
@@ -288,7 +289,7 @@ type ThemeAsset =
         Id : ThemeAssetId
         
         /// The updated date (set from the file date from the ZIP archive)
-        UpdatedOn : DateTime
+        UpdatedOn : Instant
         
         /// The data for the asset
         Data : byte[]
@@ -300,7 +301,7 @@ module ThemeAsset =
     /// An empty theme asset
     let empty =
         {   Id        = ThemeAssetId (ThemeId "", "")
-            UpdatedOn = DateTime.MinValue
+            UpdatedOn = Noda.epoch
             Data      = [||]
         }
 
@@ -317,7 +318,7 @@ type Upload =
         Path : Permalink
         
         /// The updated date/time for this upload
-        UpdatedOn : DateTime
+        UpdatedOn : Instant
         
         /// The data for the upload
         Data : byte[]
@@ -331,7 +332,7 @@ module Upload =
         {   Id        = UploadId.empty
             WebLogId  = WebLogId.empty
             Path      = Permalink.empty
-            UpdatedOn = DateTime.MinValue
+            UpdatedOn = Noda.epoch
             Data      = [||]
         }
 
@@ -410,10 +411,11 @@ module WebLog =
         let _, leadPath = hostAndPath webLog
         $"{leadPath}/{Permalink.toString permalink}"
     
-    /// Convert a UTC date/time to the web log's local date/time
-    let localTime webLog (date : DateTime) =
-        TimeZoneInfo.ConvertTimeFromUtc
-            (DateTime (date.Ticks, DateTimeKind.Utc), TimeZoneInfo.FindSystemTimeZoneById webLog.TimeZone) 
+    /// Convert an Instant (UTC reference) to the web log's local date/time
+    let localTime webLog (date : Instant) =
+        match DateTimeZoneProviders.Tzdb[webLog.TimeZone] with
+        | null -> date.ToDateTimeUtc ()
+        | tz -> date.InZone(tz).ToDateTimeUnspecified ()
 
 
 /// A user of the web log
@@ -440,9 +442,6 @@ type WebLogUser =
         /// The hash of the user's password
         PasswordHash : string
 
-        /// Salt used to calculate the user's password hash
-        Salt : Guid
-
         /// The URL of the user's personal site
         Url : string option
 
@@ -450,10 +449,10 @@ type WebLogUser =
         AccessLevel : AccessLevel
         
         /// When the user was created
-        CreatedOn : DateTime
+        CreatedOn : Instant
         
         /// When the user last logged on
-        LastSeenOn : DateTime option
+        LastSeenOn : Instant option
     }
 
 /// Functions to support web log users
@@ -468,10 +467,9 @@ module WebLogUser =
             LastName      = ""
             PreferredName = ""
             PasswordHash  = ""
-            Salt          = Guid.Empty
             Url           = None
             AccessLevel   = Author
-            CreatedOn     = DateTime.UnixEpoch
+            CreatedOn     = Noda.epoch
             LastSeenOn    = None
         }
     

src/MyWebLog.Domain/MyWebLog.Domain.fsproj

@@ -1,11 +1,5 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
-  <PropertyGroup>
-    <TargetFramework>net6.0</TargetFramework>
-    <GenerateDocumentationFile>true</GenerateDocumentationFile>
-    <DebugType>embedded</DebugType>
-  </PropertyGroup>
-
   <ItemGroup>
     <Compile Include="SupportTypes.fs" />
     <Compile Include="DataTypes.fs" />
@@ -13,9 +7,10 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Markdig" Version="0.30.2" />
+    <PackageReference Include="Markdig" Version="0.30.3" />
     <PackageReference Update="FSharp.Core" Version="6.0.5" />
     <PackageReference Include="Markdown.ColorCode" Version="1.0.1" />
+    <PackageReference Include="NodaTime" Version="3.1.2" />
   </ItemGroup>
 
 </Project>

src/MyWebLog.Domain/SupportTypes.fs

@@ -1,6 +1,7 @@
 namespace MyWebLog
 
 open System
+open NodaTime
 
 /// Support functions for domain definition
 [<AutoOpen>]
@@ -12,6 +13,29 @@ module private Helpers =
         Convert.ToBase64String(Guid.NewGuid().ToByteArray ()).Replace('/', '_').Replace('+', '-').Substring (0, 22)
 
 
+/// Functions to support NodaTime manipulation
+module Noda =
+    
+    /// The clock to use when getting "now" (will make mutable for testing)
+    let clock : IClock = SystemClock.Instance
+    
+    /// The Unix epoch
+    let epoch = Instant.FromUnixTimeSeconds 0L
+    
+        
+    /// Truncate an instant to remove fractional seconds
+    let toSecondsPrecision (value : Instant) =
+        Instant.FromUnixTimeSeconds (value.ToUnixTimeSeconds ())
+    
+    /// The current Instant, with fractional seconds truncated
+    let now () =
+        toSecondsPrecision (clock.GetCurrentInstant ())
+    
+    /// Convert a date/time to an Instant with whole seconds
+    let fromDateTime (dt : DateTime) =
+        toSecondsPrecision (Instant.FromDateTimeUtc (DateTime (dt.Ticks, DateTimeKind.Utc)))
+
+
 /// A user's access level
 type AccessLevel =
     /// The user may create and publish posts and edit the ones they have created
@@ -137,6 +161,8 @@ module ExplicitRating =
         | x       -> raise (invalidArg "rating" $"{x} is not a valid explicit rating")
 
 
+open NodaTime.Text
+
 /// A podcast episode
 type Episode =
     {   /// The URL to the media file for the episode (may be permalink)
@@ -146,7 +172,7 @@ type Episode =
         Length : int64
         
         /// The duration of the episode
-        Duration : TimeSpan option
+        Duration : Duration option
         
         /// The media type of the file (overrides podcast default if present)
         MediaType : string option
@@ -215,6 +241,10 @@ module Episode =
             EpisodeDescription = None
         }
     
+    /// Format a duration for an episode
+    let formatDuration ep =
+        ep.Duration |> Option.map (DurationPattern.CreateWithInvariantCulture("H:mm:ss").Format)
+
 
 open Markdig
 open Markdown.ColorCode
@@ -269,12 +299,11 @@ module MetaItem =
     let empty =
         { Name = ""; Value = "" }
 
-        
 /// A revision of a page or post
 [<CLIMutable; NoComparison; NoEquality>]
 type Revision =
     {   /// When this revision was saved
-        AsOf : DateTime
+        AsOf : Instant
 
         /// The text of the revision
         Text : MarkupText
@@ -285,7 +314,7 @@ module Revision =
     
     /// An empty revision
     let empty =
-        {   AsOf = DateTime.UtcNow
+        {   AsOf = Noda.epoch
             Text = Html ""
         }
 

src/MyWebLog.Domain/ViewModels.fs

@@ -2,6 +2,7 @@
 
 open System
 open MyWebLog
+open NodaTime
 
 /// Helper functions for view models
 [<AutoOpen>]
@@ -12,6 +13,17 @@ module private Helpers =
         match (defaultArg (Option.ofObj it) "").Trim () with "" -> None | trimmed -> Some trimmed
 
 
+/// Helper functions that are needed outside this file
+[<AutoOpen>]
+module PublicHelpers =
+    
+    /// If the web log is not being served from the domain root, add the path information to relative URLs in page and
+    /// post text
+    let addBaseToRelativeUrls extra (text : string) =
+        if extra = "" then text
+        else text.Replace("href=\"/", $"href=\"{extra}/").Replace ("src=\"/", $"src=\"{extra}/")
+
+
 /// The model used to display the admin dashboard
 [<NoComparison; NoEquality>]
 type DashboardModel =
@@ -127,8 +139,8 @@ type DisplayPage =
             AuthorId     = WebLogUserId.toString page.AuthorId
             Title        = page.Title
             Permalink    = Permalink.toString page.Permalink
-            PublishedOn  = page.PublishedOn
-            UpdatedOn    = page.UpdatedOn
+            PublishedOn  = WebLog.localTime webLog page.PublishedOn
+            UpdatedOn    = WebLog.localTime webLog page.UpdatedOn
             IsInPageList = page.IsInPageList
             IsDefault    = pageId = webLog.DefaultPage
             Text         = ""
@@ -143,11 +155,11 @@ type DisplayPage =
             AuthorId     = WebLogUserId.toString page.AuthorId
             Title        = page.Title
             Permalink    = Permalink.toString page.Permalink
-            PublishedOn  = page.PublishedOn
-            UpdatedOn    = page.UpdatedOn
+            PublishedOn  = WebLog.localTime webLog page.PublishedOn
+            UpdatedOn    = WebLog.localTime webLog page.UpdatedOn
             IsInPageList = page.IsInPageList
             IsDefault    = pageId = webLog.DefaultPage
-            Text         = if extra = "" then page.Text else page.Text.Replace ("href=\"/", $"href=\"{extra}/")
+            Text         = addBaseToRelativeUrls extra page.Text
             Metadata     = page.Metadata
         }
 
@@ -168,7 +180,7 @@ with
 
     /// Create a display revision from an actual revision
     static member fromRevision webLog (rev : Revision) =
-        {   AsOf      = rev.AsOf
+        {   AsOf      = rev.AsOf.ToDateTimeUtc ()
             AsOfLocal = WebLog.localTime webLog rev.AsOf
             Format    = MarkupText.sourceType rev.Text
         }
@@ -176,6 +188,40 @@ with
 
 open System.IO
 
+/// Information about a theme used for display
+[<NoComparison; NoEquality>]
+type DisplayTheme =
+    {   /// The ID / path slug of the theme
+        Id : string
+        
+        /// The name of the theme
+        Name : string
+        
+        /// The version of the theme
+        Version : string
+        
+        /// How many templates are contained in the theme
+        TemplateCount : int
+        
+        /// Whether the theme is in use by any web logs
+        IsInUse : bool
+        
+        /// Whether the theme .zip file exists on the filesystem
+        IsOnDisk : bool
+    }
+with
+    
+    /// Create a display theme from a theme
+    static member fromTheme inUseFunc (theme : Theme) =
+        {   Id            = ThemeId.toString theme.Id
+            Name          = theme.Name
+            Version       = theme.Version
+            TemplateCount = List.length theme.Templates
+            IsInUse       = inUseFunc theme.Id
+            IsOnDisk      = File.Exists $"{ThemeId.toString theme.Id}-theme.zip"
+        }
+
+
 /// Information about an uploaded file used for display
 [<NoComparison; NoEquality>]
 type DisplayUpload =
@@ -678,7 +724,7 @@ type EditPostModel =
             IsEpisode          = Option.isSome post.Episode
             Media              = episode.Media
             Length             = episode.Length
-            Duration           = defaultArg (episode.Duration |> Option.map (fun it -> it.ToString """hh\:mm\:ss""")) ""
+            Duration           = defaultArg (Episode.formatDuration episode) ""
             MediaType          = defaultArg episode.MediaType ""
             ImageUrl           = defaultArg episode.ImageUrl ""
             Subtitle           = defaultArg episode.Subtitle ""
@@ -736,7 +782,8 @@ type EditPostModel =
                         Some {
                             Media              = this.Media
                             Length             = this.Length
-                            Duration           = noneIfBlank this.Duration |> Option.map TimeSpan.Parse
+                            Duration           = noneIfBlank this.Duration
+                                                 |> Option.map (TimeSpan.Parse >> Duration.FromTimeSpan)
                             MediaType          = noneIfBlank this.MediaType
                             ImageUrl           = noneIfBlank this.ImageUrl
                             Subtitle           = noneIfBlank this.Subtitle
@@ -1027,7 +1074,7 @@ type PostListItem =
             Permalink   = Permalink.toString post.Permalink
             PublishedOn = post.PublishedOn |> Option.map inTZ |> Option.toNullable
             UpdatedOn   = inTZ post.UpdatedOn
-            Text        = if extra = "" then post.Text else post.Text.Replace ("href=\"/", $"href=\"{extra}/")
+            Text        = addBaseToRelativeUrls extra post.Text
             CategoryIds = post.CategoryIds |> List.map CategoryId.toString
             Tags        = post.Tags
             Episode     = post.Episode
@@ -1127,6 +1174,14 @@ type UploadFileModel =
     }
 
 
+/// View model for uploading a theme
+[<CLIMutable; NoComparison; NoEquality>]
+type UploadThemeModel =
+    {   /// Whether the uploaded theme should overwrite an existing theme
+        DoOverwrite : bool
+    }
+
+
 /// A message displayed to the user
 [<CLIMutable; NoComparison; NoEquality>]
 type UserMessage =

src/MyWebLog/Caches.fs

@@ -56,7 +56,6 @@ module Extensions =
             defaultArg (this.UserAccessLevel |> Option.map (AccessLevel.hasAccess level)) false
 
 
-
 open System.Collections.Concurrent
 
 /// <summary>
@@ -80,12 +79,20 @@ module WebLogCache =
     let set webLog =
         _cache <- webLog :: (_cache |> List.filter (fun wl -> wl.Id <> webLog.Id))
     
+    /// Get all cached web logs
+    let all () =
+        _cache
+    
     /// Fill the web log cache from the database
     let fill (data : IData) = backgroundTask {
         let! webLogs = data.WebLog.All ()
         _cache <- webLogs
     }
     
+    /// Is the given theme in use by any web logs?
+    let isThemeInUse themeId =
+        _cache |> List.exists (fun wl -> wl.ThemeId = themeId)
+
 
 /// A cache of page information needed to display the page list in templates
 module PageListCache =
@@ -93,22 +100,30 @@ module PageListCache =
     open MyWebLog.ViewModels
     
     /// Cache of displayed pages
-    let private _cache = ConcurrentDictionary<string, DisplayPage[]> ()
+    let private _cache = ConcurrentDictionary<WebLogId, DisplayPage[]> ()
     
-    /// Are there pages cached for this web log?
-    let exists (ctx : HttpContext) = _cache.ContainsKey ctx.WebLog.UrlBase
-    
-    /// Get the pages for the web log for this request
-    let get (ctx : HttpContext) = _cache[ctx.WebLog.UrlBase]
-    
-    /// Update the pages for the current web log
-    let update (ctx : HttpContext) = backgroundTask {
-        let  webLog = ctx.WebLog
-        let! pages  = ctx.Data.Page.FindListed webLog.Id
-        _cache[webLog.UrlBase] <-
+    let private fillPages (webLog : WebLog) pages =
+        _cache[webLog.Id] <-
             pages
             |> List.map (fun pg -> DisplayPage.fromPage webLog { pg with Text = "" })
             |> Array.ofList
+    
+    /// Are there pages cached for this web log?
+    let exists (ctx : HttpContext) = _cache.ContainsKey ctx.WebLog.Id
+    
+    /// Get the pages for the web log for this request
+    let get (ctx : HttpContext) = _cache[ctx.WebLog.Id]
+    
+    /// Update the pages for the current web log
+    let update (ctx : HttpContext) = backgroundTask {
+        let! pages = ctx.Data.Page.FindListed ctx.WebLog.Id
+        fillPages ctx.WebLog pages
+    }
+    
+    /// Refresh the pages for the given web log
+    let refresh (webLog : WebLog) (data : IData) = backgroundTask {
+        let! pages = data.Page.FindListed webLog.Id
+        fillPages webLog pages
     }
 
 
@@ -118,18 +133,24 @@ module CategoryCache =
     open MyWebLog.ViewModels
     
     /// The cache itself
-    let private _cache = ConcurrentDictionary<string, DisplayCategory[]> ()
+    let private _cache = ConcurrentDictionary<WebLogId, DisplayCategory[]> ()
     
     /// Are there categories cached for this web log?
-    let exists (ctx : HttpContext) = _cache.ContainsKey ctx.WebLog.UrlBase
+    let exists (ctx : HttpContext) = _cache.ContainsKey ctx.WebLog.Id
     
     /// Get the categories for the web log for this request
-    let get (ctx : HttpContext) = _cache[ctx.WebLog.UrlBase]
+    let get (ctx : HttpContext) = _cache[ctx.WebLog.Id]
     
     /// Update the cache with fresh data
     let update (ctx : HttpContext) = backgroundTask {
         let! cats = ctx.Data.Category.FindAllForView ctx.WebLog.Id
-        _cache[ctx.WebLog.UrlBase] <- cats
+        _cache[ctx.WebLog.Id] <- cats
+    }
+    
+    /// Refresh the category cache for the given web log
+    let refresh webLogId (data : IData) = backgroundTask {
+        let! cats = data.Category.FindAllForView webLogId
+        _cache[webLogId] <- cats
     }
 
 
@@ -147,30 +168,55 @@ module TemplateCache =
     let private hasInclude = Regex ("""{% include_template \"(.*)\" %}""", RegexOptions.None, TimeSpan.FromSeconds 2)
     
     /// Get a template for the given theme and template name
-    let get (themeId : string) (templateName : string) (data : IData) = backgroundTask {
-        let templatePath = $"{themeId}/{templateName}"
+    let get (themeId : ThemeId) (templateName : string) (data : IData) = backgroundTask {
+        let templatePath = $"{ThemeId.toString themeId}/{templateName}"
         match _cache.ContainsKey templatePath with
-        | true -> ()
+        | true -> return Ok _cache[templatePath]
         | false ->
-            match! data.Theme.FindById (ThemeId themeId) with
+            match! data.Theme.FindById themeId with
             | Some theme ->
-                let mutable text = (theme.Templates |> List.find (fun t -> t.Name = templateName)).Text
+                match theme.Templates |> List.tryFind (fun t -> t.Name = templateName) with
+                | Some template ->
+                    let mutable text = template.Text
+                    let mutable childNotFound = ""
                     while hasInclude.IsMatch text do
                         let child = hasInclude.Match text
-                    let childText  = (theme.Templates |> List.find (fun t -> t.Name = child.Groups[1].Value)).Text
+                        let childText =
+                            match theme.Templates |> List.tryFind (fun t -> t.Name = child.Groups[1].Value) with
+                            | Some childTemplate -> childTemplate.Text
+                            | None ->
+                                childNotFound <-
+                                    if childNotFound = "" then child.Groups[1].Value
+                                    else $"{childNotFound}; {child.Groups[1].Value}"
+                                ""
                         text <- text.Replace (child.Value, childText)
+                    if childNotFound <> "" then
+                        let s = if childNotFound.IndexOf ";" >= 0 then "s" else ""
+                        return Error $"Could not find the child template{s} {childNotFound} required by {templateName}"
+                    else
                         _cache[templatePath] <- Template.Parse (text, SyntaxCompatibility.DotLiquid22)
-            | None -> ()
-        return _cache[templatePath]
+                        return Ok _cache[templatePath]
+                | None ->
+                    return Error $"Theme ID {ThemeId.toString themeId} does not have a template named {templateName}"
+            | None -> return Result.Error $"Theme ID {ThemeId.toString themeId} does not exist"
     }
     
+    /// Get all theme/template names currently cached
+    let allNames () =
+        _cache.Keys |> Seq.sort |> Seq.toList
+    
     /// Invalidate all template cache entries for the given theme ID
-    let invalidateTheme (themeId : string) =
+    let invalidateTheme (themeId : ThemeId) =
+        let keyPrefix = ThemeId.toString themeId
         _cache.Keys
-        |> Seq.filter (fun key -> key.StartsWith themeId)
+        |> Seq.filter (fun key -> key.StartsWith keyPrefix)
         |> List.ofSeq
         |> List.iter (fun key -> match _cache.TryRemove key with _, _ -> ())
     
+    /// Remove all entries from the template cache
+    let empty () =
+        _cache.Clear ()
+
 
 /// A cache of asset names by themes
 module ThemeAssetCache =

src/MyWebLog/DotLiquidBespoke.fs

@@ -200,7 +200,7 @@ type UserLinksTag () =
         |> Seq.iter result.WriteLine
 
 /// A filter to retrieve the value of a meta item from a list
-//    (shorter than `{% assign item = list | where: "name", [name] | first %}{{ item.value }}`)
+//    (shorter than `{% assign item = list | where: "Name", [name] | first %}{{ item.value }}`)
 type ValueFilter () =
     static member Value (_ : Context, items : MetaItem list, name : string) =
         match items |> List.tryFind (fun it -> it.Name = name) with
@@ -228,11 +228,11 @@ let register () =
       typeof<RssOptions>; typeof<TagMap>;  typeof<UploadDestination>; typeof<WebLog>
       // View models
       typeof<DashboardModel>;    typeof<DisplayCategory>;       typeof<DisplayCustomFeed>;    typeof<DisplayPage>
-      typeof<DisplayRevision>;       typeof<DisplayUpload>;        typeof<DisplayUser>;       typeof<EditCategoryModel>
-      typeof<EditCustomFeedModel>;   typeof<EditMyInfoModel>;      typeof<EditPageModel>;     typeof<EditPostModel>
-      typeof<EditRssModel>;          typeof<EditTagMapModel>;      typeof<EditUserModel>;     typeof<LogOnModel>
-      typeof<ManagePermalinksModel>; typeof<ManageRevisionsModel>; typeof<PostDisplay>;       typeof<PostListItem>
-      typeof<SettingsModel>;         typeof<UserMessage>
+      typeof<DisplayRevision>;   typeof<DisplayTheme>;          typeof<DisplayUpload>;        typeof<DisplayUser>
+      typeof<EditCategoryModel>; typeof<EditCustomFeedModel>;   typeof<EditMyInfoModel>;      typeof<EditPageModel>
+      typeof<EditPostModel>;     typeof<EditRssModel>;          typeof<EditTagMapModel>;      typeof<EditUserModel>
+      typeof<LogOnModel>;        typeof<ManagePermalinksModel>; typeof<ManageRevisionsModel>; typeof<PostDisplay>
+      typeof<PostListItem>;      typeof<SettingsModel>;         typeof<UserMessage>
       // Framework types
       typeof<AntiforgeryTokenSet>; typeof<DateTime option>; typeof<int option>;    typeof<KeyValuePair>
       typeof<MetaItem list>;       typeof<string list>;     typeof<string option>; typeof<TagMap list>

src/MyWebLog/Handlers/Admin.fs

@@ -5,36 +5,136 @@ open System.Threading.Tasks
 open Giraffe
 open MyWebLog
 open MyWebLog.ViewModels
+open NodaTime
 
-// GET /admin
-let dashboard : HttpHandler = requireAccess Author >=> fun next ctx -> task {
+/// ~~ DASHBOARDS ~~
+module Dashboard =
+    
+    // GET /admin/dashboard
+    let user : HttpHandler = requireAccess Author >=> fun next ctx -> task {
         let getCount (f : WebLogId -> Task<int>) = f ctx.WebLog.Id
         let  data    = ctx.Data
-    let posts   = getCount (data.Post.CountByStatus Published)
-    let drafts  = getCount (data.Post.CountByStatus Draft)
-    let pages   = getCount data.Page.CountAll
-    let listed  = getCount data.Page.CountListed
-    let cats    = getCount data.Category.CountAll
-    let topCats = getCount data.Category.CountTopLevel
-    let! _ = Task.WhenAll (posts, drafts, pages, listed, cats, topCats)
+        let! posts   = getCount (data.Post.CountByStatus Published)
+        let! drafts  = getCount (data.Post.CountByStatus Draft)
+        let! pages   = getCount data.Page.CountAll
+        let! listed  = getCount data.Page.CountListed
+        let! cats    = getCount data.Category.CountAll
+        let! topCats = getCount data.Category.CountTopLevel
         return!
             hashForPage "Dashboard"
             |> addToHash ViewContext.Model {
-                Posts              = posts.Result
-                Drafts             = drafts.Result
-                Pages              = pages.Result
-                ListedPages        = listed.Result
-                Categories         = cats.Result
-                TopLevelCategories = topCats.Result
+                    Posts              = posts
+                    Drafts             = drafts
+                    Pages              = pages
+                    ListedPages        = listed
+                    Categories         = cats
+                    TopLevelCategories = topCats
                 }
             |> adminView "dashboard" next ctx
-}
+    }
 
-// -- CATEGORIES --
+    // GET /admin/administration
+    let admin : HttpHandler = requireAccess Administrator >=> fun next ctx -> task {
+        match! TemplateCache.get adminTheme "theme-list-body" ctx.Data with
+        | Ok bodyTemplate ->
+            let! themes          = ctx.Data.Theme.All ()
+            let  cachedTemplates = TemplateCache.allNames ()
+            let! hash =
+                hashForPage "myWebLog Administration"
+                |> withAntiCsrf ctx
+                |> addToHash "themes" (
+                    themes
+                    |> List.map (DisplayTheme.fromTheme WebLogCache.isThemeInUse)
+                    |> Array.ofList)
+                |> addToHash "cached_themes" (
+                    themes
+                    |> Seq.ofList
+                    |> Seq.map (fun it -> [|
+                        ThemeId.toString it.Id
+                        it.Name
+                        cachedTemplates
+                        |> List.filter (fun n -> n.StartsWith (ThemeId.toString it.Id))
+                        |> List.length
+                        |> string
+                    |])
+                    |> Array.ofSeq)
+                |> addToHash "web_logs" (
+                    WebLogCache.all ()
+                    |> Seq.ofList
+                    |> Seq.sortBy (fun it -> it.Name)
+                    |> Seq.map (fun it -> [| WebLogId.toString it.Id; it.Name; it.UrlBase |])
+                    |> Array.ofSeq)
+                |> addViewContext ctx
+            return!
+                addToHash "theme_list" (bodyTemplate.Render hash) hash
+                |> adminView "admin-dashboard" next ctx
+        | Error message -> return! Error.server message next ctx
+    }
 
-// GET /admin/categories
-let listCategories : HttpHandler = requireAccess WebLogAdmin >=> fun next ctx -> task {
-    let! catListTemplate = TemplateCache.get "admin" "category-list-body" ctx.Data
+/// Redirect the user to the admin dashboard
+let toAdminDashboard : HttpHandler = redirectToGet "admin/administration"
+
+
+/// ~~ CACHES ~~
+module Cache =
+    
+    // POST /admin/cache/web-log/{id}/refresh
+    let refreshWebLog webLogId : HttpHandler = requireAccess Administrator >=> fun next ctx -> task {
+        let data = ctx.Data
+        if webLogId = "all" then
+            do! WebLogCache.fill data
+            for webLog in WebLogCache.all () do
+                do! PageListCache.refresh webLog    data
+                do! CategoryCache.refresh webLog.Id data
+            do! addMessage ctx
+                    { UserMessage.success with Message = "Successfully refresh web log cache for all web logs" }
+        else
+            match! data.WebLog.FindById (WebLogId webLogId) with
+            | Some webLog ->
+                WebLogCache.set webLog
+                do! PageListCache.refresh webLog    data
+                do! CategoryCache.refresh webLog.Id data
+                do! addMessage ctx
+                        { UserMessage.success with Message = $"Successfully refreshed web log cache for {webLog.Name}" }
+            | None ->
+                do! addMessage ctx { UserMessage.error with Message = $"No web log exists with ID {webLogId}" }
+        return! toAdminDashboard next ctx
+    }
+
+    // POST /admin/cache/theme/{id}/refresh
+    let refreshTheme themeId : HttpHandler = requireAccess Administrator >=> fun next ctx -> task {
+        let data = ctx.Data
+        if themeId = "all" then
+            TemplateCache.empty ()
+            do! ThemeAssetCache.fill data
+            do! addMessage ctx
+                    { UserMessage.success with
+                        Message = "Successfully cleared template cache and refreshed theme asset cache"
+                    }
+        else
+            match! data.Theme.FindById (ThemeId themeId) with
+            | Some theme ->
+                TemplateCache.invalidateTheme    theme.Id
+                do! ThemeAssetCache.refreshTheme theme.Id data
+                do! addMessage ctx
+                        { UserMessage.success with
+                            Message = $"Successfully cleared template cache and refreshed theme asset cache for {theme.Name}"
+                        }
+            | None ->
+                do! addMessage ctx { UserMessage.error with Message = $"No theme exists with ID {themeId}" }
+        return! toAdminDashboard next ctx
+    }
+
+
+/// ~~ CATEGORIES ~~
+module Category =
+    
+    open MyWebLog.Data
+
+    // GET /admin/categories
+    let all : HttpHandler = requireAccess WebLogAdmin >=> fun next ctx -> task {
+        match! TemplateCache.get adminTheme "category-list-body" ctx.Data with
+        | Ok catListTemplate ->
             let! hash =
                 hashForPage "Categories"
                 |> withAntiCsrf ctx
@@ -42,17 +142,18 @@ let listCategories : HttpHandler = requireAccess WebLogAdmin >=> fun next ctx ->
             return!
                    addToHash "category_list" (catListTemplate.Render hash) hash
                 |> adminView "category-list" next ctx
-}
+        | Error message -> return! Error.server message next ctx
+    }
 
-// GET /admin/categories/bare
-let listCategoriesBare : HttpHandler = requireAccess WebLogAdmin >=> fun next ctx ->
+    // GET /admin/categories/bare
+    let bare : HttpHandler = requireAccess WebLogAdmin >=> fun next ctx ->
         hashForPage "Categories"
         |> withAntiCsrf ctx
         |> adminBareView "category-list-body" next ctx
 
 
-// GET /admin/category/{id}/edit
-let editCategory catId : HttpHandler = requireAccess WebLogAdmin >=> fun next ctx -> task {
+    // GET /admin/category/{id}/edit
+    let edit catId : HttpHandler = requireAccess WebLogAdmin >=> fun next ctx -> task {
         let! result = task {
             match catId with
             | "new" -> return Some ("Add a New Category", { Category.empty with Id = CategoryId "new" })
@@ -69,10 +170,10 @@ let editCategory catId : HttpHandler = requireAccess WebLogAdmin >=> fun next ct
                 |> addToHash ViewContext.Model (EditCategoryModel.fromCategory cat)
                 |> adminBareView "category-edit" next ctx
         | None -> return! Error.notFound next ctx
-}
+    }
 
-// POST /admin/category/save
-let saveCategory : HttpHandler = requireAccess WebLogAdmin >=> fun next ctx -> task {
+    // POST /admin/category/save
+    let save : HttpHandler = requireAccess WebLogAdmin >=> fun next ctx -> task {
         let  data     = ctx.Data
         let! model    = ctx.BindFormAsync<EditCategoryModel> ()
         let  category =
@@ -90,52 +191,55 @@ let saveCategory : HttpHandler = requireAccess WebLogAdmin >=> fun next ctx -> t
             do! (if model.IsNew then data.Category.Add else data.Category.Update) updatedCat
             do! CategoryCache.update ctx
             do! addMessage ctx { UserMessage.success with Message = "Category saved successfully" }
-        return! listCategoriesBare next ctx
+            return! bare next ctx
         | None -> return! Error.notFound next ctx
-}
+    }
 
-// POST /admin/category/{id}/delete
-let deleteCategory catId : HttpHandler = requireAccess WebLogAdmin >=> fun next ctx -> task {
-    match! ctx.Data.Category.Delete (CategoryId catId) ctx.WebLog.Id with
-    | true ->
+    // POST /admin/category/{id}/delete
+    let delete catId : HttpHandler = requireAccess WebLogAdmin >=> fun next ctx -> task {
+        let! result = ctx.Data.Category.Delete (CategoryId catId) ctx.WebLog.Id
+        match result with
+        | CategoryDeleted
+        | ReassignedChildCategories ->
             do! CategoryCache.update ctx
-        do! addMessage ctx { UserMessage.success with Message = "Category deleted successfully" }
-    | false -> do! addMessage ctx { UserMessage.error with Message = "Category not found; cannot delete" }
-    return! listCategoriesBare next ctx
-}
+            let detail =
+                match result with
+                | ReassignedChildCategories ->
+                    Some "<em>(Its child categories were reassigned to its parent category)</em>"
+                | _ -> None
+            do! addMessage ctx { UserMessage.success with Message = "Category deleted successfully"; Detail = detail }
+        | CategoryNotFound ->
+            do! addMessage ctx { UserMessage.error with Message = "Category not found; cannot delete" }
+        return! bare next ctx
+    }
 
-open Microsoft.AspNetCore.Http
 
-// -- TAG MAPPINGS --
+/// ~~ TAG MAPPINGS ~~
+module TagMapping =
     
-/// Get the hash necessary to render the tag mapping list
-let private tagMappingHash (ctx : HttpContext) = task {
+    open Microsoft.AspNetCore.Http
+
+    /// Add tag mappings to the given hash
+    let withTagMappings (ctx : HttpContext) hash = task {
         let! mappings = ctx.Data.TagMap.FindByWebLog ctx.WebLog.Id
-    return!
-        hashForPage "Tag Mappings"
+        return
+               addToHash "mappings"    mappings hash
+            |> addToHash "mapping_ids" (
+                mappings
+                |> List.map (fun it -> { Name = it.Tag; Value = TagMapId.toString it.Id }))
+    }
+
+    // GET /admin/settings/tag-mappings
+    let all : HttpHandler = requireAccess WebLogAdmin >=> fun next ctx -> task {
+        let! hash =
+            hashForPage ""
             |> withAntiCsrf    ctx
-        |> addToHash "mappings"    mappings
-        |> addToHash "mapping_ids" (mappings |> List.map (fun it -> { Name = it.Tag; Value = TagMapId.toString it.Id }))
-        |> addViewContext ctx
-}
-
-// GET /admin/settings/tag-mappings
-let tagMappings : HttpHandler = requireAccess WebLogAdmin >=> fun next ctx -> task {
-    let! hash         = tagMappingHash ctx
-    let! listTemplate = TemplateCache.get "admin" "tag-mapping-list-body" ctx.Data
-    return!
-           addToHash "tag_mapping_list" (listTemplate.Render hash) hash
-        |> adminView "tag-mapping-list" next ctx
-}
-
-// GET /admin/settings/tag-mappings/bare
-let tagMappingsBare : HttpHandler = requireAccess WebLogAdmin >=> fun next ctx -> task {
-    let! hash = tagMappingHash ctx
+            |> withTagMappings ctx
         return! adminBareView "tag-mapping-list-body" next ctx hash
-}
+    }
 
-// GET /admin/settings/tag-mapping/{id}/edit
-let editMapping tagMapId : HttpHandler = requireAccess WebLogAdmin >=> fun next ctx -> task {
+    // GET /admin/settings/tag-mapping/{id}/edit
+    let edit tagMapId : HttpHandler = requireAccess WebLogAdmin >=> fun next ctx -> task {
         let isNew  = tagMapId = "new"
         let tagMap =
             if isNew then someTask { TagMap.empty with Id = TagMapId "new" }
@@ -148,10 +252,10 @@ let editMapping tagMapId : HttpHandler = requireAccess WebLogAdmin >=> fun next
                 |> addToHash ViewContext.Model (EditTagMapModel.fromMapping tm)
                 |> adminBareView "tag-mapping-edit" next ctx
         | None -> return! Error.notFound next ctx
-}
+    }
 
-// POST /admin/settings/tag-mapping/save
-let saveMapping : HttpHandler = requireAccess WebLogAdmin >=> fun next ctx -> task {
+    // POST /admin/settings/tag-mapping/save
+    let save : HttpHandler = requireAccess WebLogAdmin >=> fun next ctx -> task {
         let  data   = ctx.Data
         let! model  = ctx.BindFormAsync<EditTagMapModel> ()
         let  tagMap =
@@ -161,34 +265,46 @@ let saveMapping : HttpHandler = requireAccess WebLogAdmin >=> fun next ctx -> ta
         | Some tm ->
             do! data.TagMap.Save { tm with Tag = model.Tag.ToLower (); UrlValue = model.UrlValue.ToLower () }
             do! addMessage ctx { UserMessage.success with Message = "Tag mapping saved successfully" }
-        return! tagMappingsBare next ctx
+            return! all next ctx
         | None -> return! Error.notFound next ctx
-}
+    }
 
-// POST /admin/settings/tag-mapping/{id}/delete
-let deleteMapping tagMapId : HttpHandler = requireAccess WebLogAdmin >=> fun next ctx -> task {
+    // POST /admin/settings/tag-mapping/{id}/delete
+    let delete tagMapId : HttpHandler = requireAccess WebLogAdmin >=> fun next ctx -> task {
         match! ctx.Data.TagMap.Delete (TagMapId tagMapId) ctx.WebLog.Id with
         | true  -> do! addMessage ctx { UserMessage.success with Message = "Tag mapping deleted successfully" }
         | false -> do! addMessage ctx { UserMessage.error with Message = "Tag mapping not found; nothing deleted" }
-    return! tagMappingsBare next ctx
-}
+        return! all next ctx
+    }
 
-// -- THEMES --
 
-open System
-open System.IO
-open System.IO.Compression
-open System.Text.RegularExpressions
-open MyWebLog.Data
+/// ~~ THEMES ~~
+module Theme =
     
-// GET /admin/theme/update
-let themeUpdatePage : HttpHandler = requireAccess Administrator >=> fun next ctx ->
-    hashForPage "Upload Theme"
+    open System
+    open System.IO
+    open System.IO.Compression
+    open System.Text.RegularExpressions
+    open MyWebLog.Data
+
+    // GET /admin/theme/list
+    let all : HttpHandler = requireAccess Administrator >=> fun next ctx -> task { 
+        let! themes = ctx.Data.Theme.All ()
+        return!
+            hashForPage "Themes"
             |> withAntiCsrf ctx
-    |> adminView "upload-theme" next ctx
+            |> addToHash "themes" (themes |> List.map (DisplayTheme.fromTheme WebLogCache.isThemeInUse) |> Array.ofList)
+            |> adminBareView "theme-list-body" next ctx
+    }
 
-/// Update the name and version for a theme based on the version.txt file, if present
-let private updateNameAndVersion (theme : Theme) (zip : ZipArchive) = backgroundTask {
+    // GET /admin/theme/new
+    let add : HttpHandler = requireAccess Administrator >=> fun next ctx ->
+        hashForPage "Upload a Theme File"
+        |> withAntiCsrf ctx
+        |> adminBareView "theme-upload" next ctx
+
+    /// Update the name and version for a theme based on the version.txt file, if present
+    let private updateNameAndVersion (theme : Theme) (zip : ZipArchive) = backgroundTask {
         let now () = DateTime.UtcNow.ToString "yyyyMMdd.HHmm"
         match zip.Entries |> Seq.filter (fun it -> it.FullName = "version.txt") |> Seq.tryHead with
         | Some versionItem ->
@@ -199,18 +315,10 @@ let private updateNameAndVersion (theme : Theme) (zip : ZipArchive) = background
             let  version     = if parts.Length > 1 && parts[1] > "" then parts[1] else now ()
             return { theme with Name = displayName; Version = version }
         | None -> return { theme with Name = ThemeId.toString theme.Id; Version = now () }
-}
+    }
 
-/// Delete all theme assets, and remove templates from theme
-let private checkForCleanLoad (theme : Theme) cleanLoad (data : IData) = backgroundTask {
-    if cleanLoad then
-        do! data.ThemeAsset.DeleteByTheme theme.Id
-        return { theme with Templates = [] }
-    else return theme
-}
-
-/// Update the theme with all templates from the ZIP archive
-let private updateTemplates (theme : Theme) (zip : ZipArchive) = backgroundTask {
+    /// Update the theme with all templates from the ZIP archive
+    let private updateTemplates (theme : Theme) (zip : ZipArchive) = backgroundTask {
         let tasks =
             zip.Entries
             |> Seq.filter (fun it -> it.Name.EndsWith ".liquid")
@@ -225,10 +333,10 @@ let private updateTemplates (theme : Theme) (zip : ZipArchive) = backgroundTask
             |> Array.fold (fun t template ->
                 { t with Templates = template :: (t.Templates |> List.filter (fun it -> it.Name <> template.Name)) })
                 theme
-}
+    }
 
-/// Update theme assets from the ZIP archive
-let private updateAssets themeId (zip : ZipArchive) (data : IData) = backgroundTask {
+    /// Update theme assets from the ZIP archive
+    let private updateAssets themeId (zip : ZipArchive) (data : IData) = backgroundTask {
         for asset in zip.Entries |> Seq.filter (fun it -> it.FullName.StartsWith "wwwroot") do
             let assetName = asset.FullName.Replace ("wwwroot/", "")
             if assetName <> "" && not (assetName.EndsWith "/") then
@@ -236,65 +344,119 @@ let private updateAssets themeId (zip : ZipArchive) (data : IData) = backgroundT
                 do! asset.Open().CopyToAsync stream
                 do! data.ThemeAsset.Save
                         {   Id        = ThemeAssetId (themeId, assetName)
-                        UpdatedOn = asset.LastWriteTime.DateTime
+                            UpdatedOn = LocalDateTime.FromDateTime(asset.LastWriteTime.DateTime)
+                                            .InZoneLeniently(DateTimeZone.Utc).ToInstant ()
                             Data      = stream.ToArray ()
                         }
-}
-
-/// Get the theme name from the file name given
-let getThemeName (fileName : string) =
-    let themeName = fileName.Split(".").[0].ToLowerInvariant().Replace (" ", "-")
-    if Regex.IsMatch (themeName, """^[a-z0-9\-]+$""") then Ok themeName else Error $"Theme name {fileName} is invalid"
-
-/// Load a theme from the given stream, which should contain a ZIP archive
-let loadThemeFromZip themeName file clean (data : IData) = backgroundTask {
-    use  zip     = new ZipArchive (file, ZipArchiveMode.Read)
-    let  themeId = ThemeId themeName
-    let! theme   = backgroundTask {
-        match! data.Theme.FindById themeId with
-        | Some t -> return t
-        | None   -> return { Theme.empty with Id = themeId }
     }
+
+    /// Derive the theme ID from the file name given
+    let deriveIdFromFileName (fileName : string) =
+        let themeName = fileName.Split(".").[0].ToLowerInvariant().Replace (" ", "-")
+        if themeName.EndsWith "-theme" then
+            if Regex.IsMatch (themeName, """^[a-z0-9\-]+$""") then
+                Ok (ThemeId (themeName.Substring (0, themeName.Length - 6)))
+            else Error $"Theme ID {fileName} is invalid"
+        else Error "Theme .zip file name must end in \"-theme.zip\""
+
+    /// Load a theme from the given stream, which should contain a ZIP archive
+    let loadFromZip themeId file (data : IData) = backgroundTask {
+        let! isNew, theme = backgroundTask {
+            match! data.Theme.FindById themeId with
+            | Some t -> return false, t
+            | None   -> return true, { Theme.empty with Id = themeId }
+        }
+        use  zip   = new ZipArchive (file, ZipArchiveMode.Read)
         let! theme = updateNameAndVersion theme zip
-    let! theme = checkForCleanLoad    theme   clean data
-    let! theme = updateTemplates      theme   zip
+        if not isNew then do! data.ThemeAsset.DeleteByTheme theme.Id
+        let! theme = updateTemplates { theme with Templates = [] } zip
         do! data.Theme.Save theme
         do! updateAssets themeId zip data
-}
         
-// POST /admin/theme/update
-let updateTheme : HttpHandler = requireAccess Administrator >=> fun next ctx -> task {
+        return theme
+    }
+
+    // POST /admin/theme/new
+    let save : HttpHandler = requireAccess Administrator >=> fun next ctx -> task {
         if ctx.Request.HasFormContentType && ctx.Request.Form.Files.Count > 0 then
             let themeFile = Seq.head ctx.Request.Form.Files
-        match getThemeName themeFile.FileName with
-        | Ok themeName when themeName <> "admin" ->
+            match deriveIdFromFileName themeFile.FileName with
+            | Ok themeId when themeId <> adminTheme ->
                 let  data   = ctx.Data
+                let! exists = data.Theme.Exists themeId
+                let  isNew  = not exists
+                let! model  = ctx.BindFormAsync<UploadThemeModel> ()
+                if isNew || model.DoOverwrite then 
+                    // Load the theme to the database
                     use stream = new MemoryStream ()
                     do! themeFile.CopyToAsync stream
-            do! loadThemeFromZip themeName stream true data
-            do! ThemeAssetCache.refreshTheme (ThemeId themeName) data
-            TemplateCache.invalidateTheme themeName
-            do! addMessage ctx { UserMessage.success with Message = "Theme updated successfully" }
-            return! redirectToGet "admin/dashboard" next ctx
+                    let! _ = loadFromZip themeId stream data
+                    do! ThemeAssetCache.refreshTheme themeId data
+                    TemplateCache.invalidateTheme themeId
+                    // Save the .zip file
+                    use file = new FileStream ($"{ThemeId.toString themeId}-theme.zip", FileMode.Create)
+                    do! themeFile.CopyToAsync file
+                    do! addMessage ctx
+                            { UserMessage.success with
+                                Message = $"""Theme {if isNew then "add" else "updat"}ed successfully"""
+                            }
+                    return! toAdminDashboard next ctx
+                else
+                    do! addMessage ctx
+                            { UserMessage.error with
+                                Message = "Theme exists and overwriting was not requested; nothing saved"
+                            }
+                    return! toAdminDashboard next ctx
             | Ok _ ->
                 do! addMessage ctx { UserMessage.error with Message = "You may not replace the admin theme" }
-            return! redirectToGet "admin/theme/update" next ctx
+                return! toAdminDashboard next ctx
             | Error message ->
                 do! addMessage ctx { UserMessage.error with Message = message }
-            return! redirectToGet "admin/theme/update" next ctx
+                return! toAdminDashboard next ctx
         else return! RequestErrors.BAD_REQUEST "Bad request" next ctx
-}
+    }
 
-// -- WEB LOG SETTINGS --
-
-open System.Collections.Generic
-
-// GET /admin/settings
-let settings : HttpHandler = requireAccess WebLogAdmin >=> fun next ctx -> task {
+    // POST /admin/theme/{id}/delete
+    let delete themeId : HttpHandler = requireAccess Administrator >=> fun next ctx -> task {
         let data = ctx.Data
+        match themeId with
+        | "admin" | "default" ->
+            do! addMessage ctx { UserMessage.error with Message = $"You may not delete the {themeId} theme" }
+            return! all next ctx
+        | it when WebLogCache.isThemeInUse (ThemeId it) ->
+            do! addMessage ctx
+                    { UserMessage.error with
+                        Message = $"You may not delete the {themeId} theme, as it is currently in use"
+                    }
+            return! all next ctx
+        | _ ->
+            match! data.Theme.Delete (ThemeId themeId) with
+            | true ->
+                let zippedTheme = $"{themeId}-theme.zip"
+                if File.Exists zippedTheme then File.Delete zippedTheme
+                do! addMessage ctx { UserMessage.success with Message = $"Theme ID {themeId} deleted successfully" }
+                return! all next ctx
+            | false -> return! Error.notFound next ctx
+    }
+
+
+/// ~~ WEB LOG SETTINGS ~~
+module WebLog =
+    
+    open System.Collections.Generic
+    open System.IO
+
+    // GET /admin/settings
+    let settings : HttpHandler = requireAccess WebLogAdmin >=> fun next ctx -> task {
+        let data = ctx.Data
+        match! TemplateCache.get adminTheme "user-list-body" data with
+        | Ok userTemplate ->
+            match! TemplateCache.get adminTheme "tag-mapping-list-body" ctx.Data with
+            | Ok tagMapTemplate ->
                 let! allPages = data.Page.All ctx.WebLog.Id
                 let! themes   = data.Theme.All ()
-    return!
+                let! users    = data.WebLogUser.FindByWebLog ctx.WebLog.Id
+                let! hash     =
                     hashForPage "Web Log Settings"
                     |> withAntiCsrf ctx
                     |> addToHash ViewContext.Model (SettingsModel.fromWebLog ctx.WebLog)
@@ -309,17 +471,31 @@ let settings : HttpHandler = requireAccess WebLogAdmin >=> fun next ctx -> task
                     |> addToHash "themes" (
                         themes
                         |> Seq.ofList
-            |> Seq.map (fun it -> KeyValuePair.Create (ThemeId.toString it.Id, $"{it.Name} (v{it.Version})"))
+                        |> Seq.map (fun it ->
+                            KeyValuePair.Create (ThemeId.toString it.Id, $"{it.Name} (v{it.Version})"))
                         |> Array.ofSeq)
                     |> addToHash "upload_values" [|
                         KeyValuePair.Create (UploadDestination.toString Database, "Database")
                         KeyValuePair.Create (UploadDestination.toString Disk,     "Disk")
                     |]
+                    |> addToHash "users" (users |> List.map (DisplayUser.fromUser ctx.WebLog) |> Array.ofList)
+                    |> addToHash "rss_model" (EditRssModel.fromRssOptions ctx.WebLog.Rss)
+                    |> addToHash "custom_feeds" (
+                        ctx.WebLog.Rss.CustomFeeds
+                        |> List.map (DisplayCustomFeed.fromFeed (CategoryCache.get ctx))
+                        |> Array.ofList)
+                    |> addViewContext ctx
+                let! hash' = TagMapping.withTagMappings ctx hash
+                return!
+                       addToHash "user_list"        (userTemplate.Render   hash') hash'
+                    |> addToHash "tag_mapping_list" (tagMapTemplate.Render hash')
                     |> adminView "settings" next ctx
-}
+            | Error message -> return! Error.server message next ctx
+        | Error message -> return! Error.server message next ctx
+    }
 
-// POST /admin/settings
-let saveSettings : HttpHandler = requireAccess WebLogAdmin >=> fun next ctx -> task {
+    // POST /admin/settings
+    let saveSettings : HttpHandler = requireAccess WebLogAdmin >=> fun next ctx -> task {
         let  data  = ctx.Data
         let! model = ctx.BindFormAsync<SettingsModel> ()
         match! data.WebLog.FindById ctx.WebLog.Id with
@@ -340,4 +516,4 @@ let saveSettings : HttpHandler = requireAccess WebLogAdmin >=> fun next ctx -> t
             do! addMessage ctx { UserMessage.success with Message = "Web log settings saved successfully" }
             return! redirectToGet "admin/settings" next ctx
         | None -> return! Error.notFound next ctx
-}
+    }

src/MyWebLog/Handlers/Feed.fs

@@ -95,8 +95,8 @@ let private toFeedItem webLog (authors : MetaItem list) (cats : DisplayCategory[
     let item = SyndicationItem (
         Id              = WebLog.absoluteUrl webLog post.Permalink,
         Title           = TextSyndicationContent.CreateHtmlContent post.Title,
-        PublishDate     = DateTimeOffset post.PublishedOn.Value,
-        LastUpdatedTime = DateTimeOffset post.UpdatedOn,
+        PublishDate     = post.PublishedOn.Value.ToDateTimeOffset (),
+        LastUpdatedTime = post.UpdatedOn.ToDateTimeOffset (),
         Content         = TextSyndicationContent.CreatePlaintextContent plainText)
     item.AddPermalink (Uri item.Id)
     
@@ -163,8 +163,8 @@ let private addEpisode webLog (podcast : PodcastOptions) (episode : Episode) (po
     item.ElementExtensions.Add ("author",   Namespace.iTunes, podcast.DisplayedAuthor)
     item.ElementExtensions.Add ("explicit", Namespace.iTunes, epExplicit)
     episode.Subtitle |> Option.iter (fun it -> item.ElementExtensions.Add ("subtitle", Namespace.iTunes, it))
-    episode.Duration
-    |> Option.iter (fun it -> item.ElementExtensions.Add ("duration", Namespace.iTunes, it.ToString """hh\:mm\:ss"""))
+    Episode.formatDuration episode
+    |> Option.iter (fun it -> item.ElementExtensions.Add ("duration", Namespace.iTunes, it))
     
     match episode.ChapterFile with
     | Some chapters ->
@@ -381,7 +381,7 @@ let createFeed (feedType : FeedType) posts : HttpHandler = fun next ctx -> backg
     addNamespace feed "content" Namespace.content
     setTitleAndDescription feedType webLog cats feed
     
-    feed.LastUpdatedTime <- (List.head posts).UpdatedOn |> DateTimeOffset
+    feed.LastUpdatedTime <- (List.head posts).UpdatedOn.ToDateTimeOffset ()
     feed.Generator       <- ctx.Generator
     feed.Items           <- posts |> Seq.ofList |> Seq.map toItem
     feed.Language        <- "en"
@@ -414,17 +414,6 @@ let generate (feedType : FeedType) postCount : HttpHandler = fun next ctx -> bac
 
 // ~~ FEED ADMINISTRATION ~~
 
-// GET /admin/settings/rss
-let editSettings : HttpHandler = requireAccess WebLogAdmin >=> fun next ctx ->
-    hashForPage "RSS Settings"
-    |> withAntiCsrf ctx
-    |> addToHash ViewContext.Model (EditRssModel.fromRssOptions ctx.WebLog.Rss)
-    |> addToHash "custom_feeds" (
-        ctx.WebLog.Rss.CustomFeeds
-        |> List.map (DisplayCustomFeed.fromFeed (CategoryCache.get ctx))
-        |> Array.ofList)
-    |> adminView "rss-settings" next ctx
-
 // POST /admin/settings/rss
 let saveSettings : HttpHandler = requireAccess WebLogAdmin >=> fun next ctx -> task {
     let  data  = ctx.Data
@@ -435,7 +424,7 @@ let saveSettings : HttpHandler = requireAccess WebLogAdmin >=> fun next ctx -> t
         do! data.WebLog.UpdateRssOptions webLog
         WebLogCache.set webLog
         do! addMessage ctx { UserMessage.success with Message = "RSS settings updated successfully" }
-        return! redirectToGet "admin/settings/rss" next ctx
+        return! redirectToGet "admin/settings#rss-settings" next ctx
     | None -> return! Error.notFound next ctx
 }
 
@@ -507,6 +496,6 @@ let deleteCustomFeed feedId : HttpHandler = requireAccess WebLogAdmin >=> fun ne
             do! addMessage ctx { UserMessage.success with Message = "Custom feed deleted successfully" }
         else
             do! addMessage ctx { UserMessage.warning with Message = "Custom feed not found; no action taken" }
-        return! redirectToGet "admin/settings/rss" next ctx
+        return! redirectToGet "admin/settings#rss-settings" next ctx
     | None -> return! Error.notFound next ctx
 }

src/MyWebLog/Handlers/Helpers.fs

@@ -218,23 +218,6 @@ let addViewContext ctx (hash : Hash) = task {
 let isHtmx (ctx : HttpContext) =
     ctx.Request.IsHtmx && not ctx.Request.IsHtmxRefresh
 
-/// Render a view for the specified theme, using the specified template, layout, and hash
-let viewForTheme themeId template next ctx (hash : Hash) = task {
-    let! hash = addViewContext ctx hash
-    let (ThemeId theme) = themeId
-    // NOTE: DotLiquid does not support {% render %} or {% include %} in its templates, so we will do a 2-pass render;
-    //       the net effect is a "layout" capability similar to Razor or Pug
-    
-    // Render view content...
-    let! contentTemplate = TemplateCache.get theme template ctx.Data
-    let _ = addToHash ViewContext.Content (contentTemplate.Render hash) hash
-    
-    // ...then render that content with its layout
-    let! layoutTemplate = TemplateCache.get theme (if isHtmx ctx then "layout-partial" else "layout") ctx.Data
-    
-    return! htmlString (layoutTemplate.Render hash) next ctx
-}
-
 /// Convert messages to headers (used for htmx responses)
 let messagesToHeaders (messages : UserMessage array) : HttpHandler =
     seq {
@@ -249,50 +232,12 @@ let messagesToHeaders (messages : UserMessage array) : HttpHandler =
     }
     |> Seq.reduce (>=>)
 
-/// Render a bare view for the specified theme, using the specified template and hash
-let bareForTheme themeId template next ctx (hash : Hash) = task {
-    let! hash = addViewContext ctx hash
-    let (ThemeId theme) = themeId
-    
-    if not (hash.ContainsKey ViewContext.Content) then
-        let! contentTemplate = TemplateCache.get theme template ctx.Data
-        addToHash ViewContext.Content (contentTemplate.Render hash) hash |> ignore
-    
-    // Bare templates are rendered with layout-bare
-    let! layoutTemplate = TemplateCache.get theme "layout-bare" ctx.Data
-    return!
-        (messagesToHeaders (hash[ViewContext.Messages] :?> UserMessage[])
-         >=> htmlString (layoutTemplate.Render hash))
-            next ctx
-}
-
-/// Return a view for the web log's default theme
-let themedView template next ctx hash = task {
-    let! hash = addViewContext ctx hash
-    return! viewForTheme (hash[ViewContext.WebLog] :?> WebLog).ThemeId template next ctx hash
-}
-
-/// Display a view for the admin theme
-let adminView template =
-    viewForTheme (ThemeId "admin") template
-
-/// Display a bare view for the admin theme
-let adminBareView template =
-    bareForTheme (ThemeId "admin") template
-
 /// Redirect after doing some action; commits session and issues a temporary redirect
 let redirectToGet url : HttpHandler = fun _ ctx -> task {
     do! commitSession ctx
     return! redirectTo false (WebLog.relativeUrl ctx.WebLog (Permalink url)) earlyReturn ctx
 }
 
-/// Validate the anti cross-site request forgery token in the current request
-let validateCsrf : HttpHandler = fun next ctx -> task {
-    match! ctx.AntiForgery.IsRequestValidAsync ctx with
-    | true -> return! next ctx
-    | false -> return! RequestErrors.BAD_REQUEST "CSRF token invalid" earlyReturn ctx
-}
-
 
 /// Handlers for error conditions
 module Error =
@@ -322,10 +267,81 @@ module Error =
                 let messages = [|
                     { UserMessage.error with Message = $"The URL {ctx.Request.Path.Value} was not found" }
                 |]
-                (messagesToHeaders messages >=> setStatusCode 404) earlyReturn ctx
-            else
-                (setStatusCode 404 >=> text "Not found") earlyReturn ctx)
+                RequestErrors.notFound (messagesToHeaders messages) earlyReturn ctx
+            else RequestErrors.NOT_FOUND "Not found" earlyReturn ctx)
     
+    let server message : HttpHandler =
+        handleContext (fun ctx ->
+            if isHtmx ctx then
+                let messages = [| { UserMessage.error with Message = message } |]
+                ServerErrors.internalError (messagesToHeaders messages) earlyReturn ctx
+            else ServerErrors.INTERNAL_ERROR message earlyReturn ctx)
+
+
+/// Render a view for the specified theme, using the specified template, layout, and hash
+let viewForTheme themeId template next ctx (hash : Hash) = task {
+    let! hash = addViewContext ctx hash
+    
+    // NOTE: DotLiquid does not support {% render %} or {% include %} in its templates, so we will do a 2-pass render;
+    //       the net effect is a "layout" capability similar to Razor or Pug
+    
+    // Render view content...
+    match! TemplateCache.get themeId template ctx.Data with
+    | Ok contentTemplate ->
+        let _ = addToHash ViewContext.Content (contentTemplate.Render hash) hash
+        // ...then render that content with its layout
+        match! TemplateCache.get themeId (if isHtmx ctx then "layout-partial" else "layout") ctx.Data with
+        | Ok layoutTemplate ->  return! htmlString (layoutTemplate.Render hash) next ctx
+        | Error message -> return! Error.server message next ctx
+    | Error message -> return! Error.server message next ctx
+}
+
+/// Render a bare view for the specified theme, using the specified template and hash
+let bareForTheme themeId template next ctx (hash : Hash) = task {
+    let! hash        = addViewContext ctx hash
+    let  withContent = task {
+        if hash.ContainsKey ViewContext.Content then return Ok hash
+        else
+            match! TemplateCache.get themeId template ctx.Data with
+            | Ok contentTemplate -> return Ok (addToHash ViewContext.Content (contentTemplate.Render hash) hash)
+            | Error message -> return Error message 
+    }
+    match! withContent with
+    | Ok completeHash ->
+        // Bare templates are rendered with layout-bare
+        match! TemplateCache.get themeId "layout-bare" ctx.Data with
+        | Ok layoutTemplate ->
+            return!
+                (messagesToHeaders (hash[ViewContext.Messages] :?> UserMessage[])
+                 >=> htmlString (layoutTemplate.Render completeHash))
+                    next ctx
+        | Error message -> return! Error.server message next ctx
+    | Error message -> return! Error.server message next ctx
+}
+
+/// Return a view for the web log's default theme
+let themedView template next ctx hash = task {
+    let! hash = addViewContext ctx hash
+    return! viewForTheme (hash[ViewContext.WebLog] :?> WebLog).ThemeId template next ctx hash
+}
+
+/// The ID for the admin theme
+let adminTheme = ThemeId "admin"
+
+/// Display a view for the admin theme
+let adminView template =
+    viewForTheme adminTheme template
+
+/// Display a bare view for the admin theme
+let adminBareView template =
+    bareForTheme adminTheme template
+
+/// Validate the anti cross-site request forgery token in the current request
+let validateCsrf : HttpHandler = fun next ctx -> task {
+    match! ctx.AntiForgery.IsRequestValidAsync ctx with
+    | true -> return! next ctx
+    | false -> return! RequestErrors.BAD_REQUEST "CSRF token invalid" earlyReturn ctx
+}
 
 /// Require a user to be logged on
 let requireUser : HttpHandler = requiresAuthentication Error.notAuthorized
@@ -403,10 +419,11 @@ let getCategoryIds slug ctx =
 
 open System
 open System.Globalization
+open NodaTime
 
 /// Parse a date/time to UTC 
 let parseToUtc (date : string) =
-    DateTime.Parse (date, null, DateTimeStyles.AdjustToUniversal)
+    Instant.FromDateTimeUtc (DateTime.Parse (date, null, DateTimeStyles.AdjustToUniversal))
 
 open Microsoft.Extensions.DependencyInjection
 open Microsoft.Extensions.Logging

src/MyWebLog/Handlers/Page.fs

@@ -124,8 +124,14 @@ let private findPageRevision pgId revDate (ctx : HttpContext) = task {
 let previewRevision (pgId, revDate) : HttpHandler = requireAccess Author >=> fun next ctx -> task {
     match! findPageRevision pgId revDate ctx with
     | Some pg, Some rev when canEdit pg.AuthorId ctx ->
+        let _, extra = WebLog.hostAndPath ctx.WebLog
         return! {|
-            content = $"""<div class="mwl-revision-preview mb-3">{MarkupText.toHtml rev.Text}</div>"""
+            content =
+                [   """<div class="mwl-revision-preview mb-3">"""
+                    (MarkupText.toHtml >> addBaseToRelativeUrls extra) rev.Text
+                    "</div>"
+                ]
+                |> String.concat ""
         |}
         |> makeHash |> adminBareView "" next ctx
     | Some _, Some _ -> return! Error.notAuthorized next ctx
@@ -133,15 +139,13 @@ let previewRevision (pgId, revDate) : HttpHandler = requireAccess Author >=> fun
     | _, None -> return! Error.notFound next ctx
 }
 
-open System
-
 // POST /admin/page/{id}/revision/{revision-date}/restore
 let restoreRevision (pgId, revDate) : HttpHandler = requireAccess Author >=> fun next ctx -> task {
     match! findPageRevision pgId revDate ctx with
     | Some pg, Some rev when canEdit pg.AuthorId ctx ->
         do! ctx.Data.Page.Update
                 { pg with
-                    Revisions = { rev with AsOf = DateTime.UtcNow }
+                    Revisions = { rev with AsOf = Noda.now () }
                                   :: (pg.Revisions |> List.filter (fun r -> r.AsOf <> rev.AsOf))
                 }
         do! addMessage ctx { UserMessage.success with Message = "Revision restored successfully" }
@@ -167,7 +171,7 @@ let deleteRevision (pgId, revDate) : HttpHandler = requireAccess Author >=> fun
 let save : HttpHandler = requireAccess Author >=> fun next ctx -> task {
     let! model   = ctx.BindFormAsync<EditPageModel> ()
     let  data    = ctx.Data
-    let  now     = DateTime.UtcNow
+    let  now     = Noda.now ()
     let  tryPage =
         if model.IsNew then
             { Page.empty with

src/MyWebLog/Handlers/Post.fs

@@ -53,8 +53,8 @@ let preparePostList webLog posts listType (url : string) pageNbr perPage (data :
         match listType with
         | SinglePost ->
             let post   = List.head posts
-            let dateTime = defaultArg post.PublishedOn post.UpdatedOn
-            data.Post.FindSurroundingPosts webLog.Id dateTime
+            let target = defaultArg post.PublishedOn post.UpdatedOn
+            data.Post.FindSurroundingPosts webLog.Id target
         | _ -> Task.FromResult (None, None)
     let newerLink =
         match listType, pageNbr with
@@ -329,8 +329,14 @@ let private findPostRevision postId revDate (ctx : HttpContext) = task {
 let previewRevision (postId, revDate) : HttpHandler = requireAccess Author >=> fun next ctx -> task {
     match! findPostRevision postId revDate ctx with
     | Some post, Some rev when canEdit post.AuthorId ctx ->
+        let _, extra = WebLog.hostAndPath ctx.WebLog
         return! {|
-            content = $"""<div class="mwl-revision-preview mb-3">{MarkupText.toHtml rev.Text}</div>"""
+            content =
+                [   """<div class="mwl-revision-preview mb-3">"""
+                    (MarkupText.toHtml >> addBaseToRelativeUrls extra) rev.Text
+                    "</div>"
+                ]
+                |> String.concat ""
         |}
         |> makeHash |> adminBareView "" next ctx
     | Some _, Some _ -> return! Error.notAuthorized next ctx
@@ -344,7 +350,7 @@ let restoreRevision (postId, revDate) : HttpHandler = requireAccess Author >=> f
     | Some post, Some rev when canEdit post.AuthorId ctx ->
         do! ctx.Data.Post.Update
                 { post with
-                    Revisions = { rev with AsOf = DateTime.UtcNow }
+                    Revisions = { rev with AsOf = Noda.now () }
                                   :: (post.Revisions |> List.filter (fun r -> r.AsOf <> rev.AsOf))
                 }
         do! addMessage ctx { UserMessage.success with Message = "Revision restored successfully" }
@@ -370,7 +376,6 @@ let deleteRevision (postId, revDate) : HttpHandler = requireAccess Author >=> fu
 let save : HttpHandler = requireAccess Author >=> fun next ctx -> task {
     let! model   = ctx.BindFormAsync<EditPostModel> ()
     let  data    = ctx.Data
-    let  now     = DateTime.UtcNow
     let  tryPost =
         if model.IsNew then
             { Post.empty with
@@ -383,7 +388,7 @@ let save : HttpHandler = requireAccess Author >=> fun next ctx -> task {
     | Some post when canEdit post.AuthorId ctx ->
         let priorCats   = post.CategoryIds
         let updatedPost =
-            model.UpdatePost post now
+            model.UpdatePost post (Noda.now ())
             |> function
             | post ->
                 if model.SetPublished then

src/MyWebLog/Handlers/Routes.fs

@@ -94,7 +94,7 @@ module Asset =
         | Some asset ->
             match Upload.checkModified asset.UpdatedOn ctx with
             | Some threeOhFour -> return! threeOhFour next ctx
-            | None -> return! Upload.sendFile asset.UpdatedOn path asset.Data next ctx
+            | None -> return! Upload.sendFile (asset.UpdatedOn.ToDateTimeUtc ()) path asset.Data next ctx
         | None -> return! Error.notFound next ctx
     }
 
@@ -106,12 +106,14 @@ let router : HttpHandler = choose [
     ]
     subRoute "/admin" (requireUser >=> choose [
         GET_HEAD >=> choose [
+            route    "/administration" >=> Admin.Dashboard.admin
             subRoute "/categor" (choose [
-                route  "ies"       >=> Admin.listCategories
-                route  "ies/bare"  >=> Admin.listCategoriesBare
-                routef "y/%s/edit"     Admin.editCategory
+                route  "ies"       >=> Admin.Category.all
+                route  "ies/bare"  >=> Admin.Category.bare
+                routef "y/%s/edit"     Admin.Category.edit
             ])
-            route    "/dashboard" >=> Admin.dashboard
+            route    "/dashboard" >=> Admin.Dashboard.user
+            route    "/my-info"   >=> User.myInfo
             subRoute "/page" (choose [
                 route  "s"                       >=> Page.all 1
                 routef "s/page/%i"                   Page.all
@@ -129,34 +131,36 @@ let router : HttpHandler = choose [
                 routef "/%s/revisions"               Post.editRevisions
             ])
             subRoute "/settings" (choose [
-                route ""     >=> Admin.settings
-                subRoute "/rss" (choose [
-                    route  ""         >=> Feed.editSettings
-                    routef "/%s/edit"     Feed.editCustomFeed
+                route  ""             >=> Admin.WebLog.settings
+                routef "/rss/%s/edit"     Feed.editCustomFeed
+                subRoute "/user" (choose [
+                    route  "s"        >=> User.all
+                    routef "/%s/edit"     User.edit
                 ])
                 subRoute "/tag-mapping" (choose [
-                    route  "s"        >=> Admin.tagMappings
-                    route  "s/bare"   >=> Admin.tagMappingsBare
-                    routef "/%s/edit"     Admin.editMapping
+                    route  "s"        >=> Admin.TagMapping.all
+                    routef "/%s/edit"     Admin.TagMapping.edit
                 ])
             ])
-            route    "/theme/update" >=> Admin.themeUpdatePage
+            subRoute "/theme" (choose [
+                route "/list" >=> Admin.Theme.all
+                route "/new"  >=> Admin.Theme.add
+            ])
             subRoute "/upload" (choose [
                 route "s"    >=> Upload.list
                 route "/new" >=> Upload.showNew
             ])
-            subRoute "/user" (choose [
-                route  "s"        >=> User.all
-                route  "s/bare"   >=> User.bare
-                route  "/my-info" >=> User.myInfo
-                routef "/%s/edit"     User.edit
-            ])
         ]
         POST >=> validateCsrf >=> choose [
-            subRoute "/category" (choose [
-                route  "/save"      >=> Admin.saveCategory
-                routef "/%s/delete"     Admin.deleteCategory
+            subRoute "/cache" (choose [
+                routef "/theme/%s/refresh"   Admin.Cache.refreshTheme
+                routef "/web-log/%s/refresh" Admin.Cache.refreshWebLog
             ])
+            subRoute "/category" (choose [
+                route  "/save"      >=> Admin.Category.save
+                routef "/%s/delete"     Admin.Category.delete
+            ])
+            route    "/my-info" >=> User.saveMyInfo
             subRoute "/page" (choose [
                 route  "/save"                   >=> Page.save
                 route  "/permalinks"             >=> Page.savePermalinks
@@ -174,28 +178,30 @@ let router : HttpHandler = choose [
                 routef "/%s/revisions/purge"         Post.purgeRevisions
             ])
             subRoute "/settings" (choose [
-                route ""     >=> Admin.saveSettings
+                route ""     >=> Admin.WebLog.saveSettings
                 subRoute "/rss" (choose [
                     route  ""           >=> Feed.saveSettings
                     route  "/save"      >=> Feed.saveCustomFeed
                     routef "/%s/delete"     Feed.deleteCustomFeed
                 ])
                 subRoute "/tag-mapping" (choose [
-                    route  "/save"      >=> Admin.saveMapping
-                    routef "/%s/delete"     Admin.deleteMapping
+                    route  "/save"      >=> Admin.TagMapping.save
+                    routef "/%s/delete"     Admin.TagMapping.delete
+                ])
+                subRoute "/user" (choose [
+                    route  "/save"      >=> User.save
+                    routef "/%s/delete"     User.delete
                 ])
             ])
-            route    "/theme/update" >=> Admin.updateTheme
+            subRoute "/theme" (choose [
+                route  "/new"       >=> Admin.Theme.save
+                routef "/%s/delete"     Admin.Theme.delete
+            ])
             subRoute "/upload" (choose [
                 route   "/save"        >=> Upload.save
                 routexp "/delete/(.*)"     Upload.deleteFromDisk
                 routef  "/%s/delete"       Upload.deleteFromDb
             ])
-            subRoute "/user" (choose [
-                route  "/my-info"   >=> User.saveMyInfo
-                route  "/save"      >=> User.save
-                routef "/%s/delete"     User.delete
-            ])
         ]
     ])
     GET_HEAD >=> routexp "/category/(.*)"  Post.pageOfCategorizedPosts

src/MyWebLog/Handlers/Upload.fs

@@ -29,15 +29,17 @@ module private Helpers =
 
 // ~~ SERVING UPLOADS ~~
 
+open System.Globalization
 open Giraffe
 open Microsoft.AspNetCore.Http
+open NodaTime
 
 /// Determine if the file has been modified since the date/time specified by the If-Modified-Since header
 let checkModified since (ctx : HttpContext) : HttpHandler option =
     match ctx.Request.Headers.IfModifiedSince with
     | it when it.Count < 1 -> None
-    | it when since > DateTime.Parse it[0] -> None
-    | _ -> Some (setStatusCode 304 >=> setBodyFromString "Not Modified")
+    | it when since > Instant.FromDateTimeUtc (DateTime.Parse (it[0], null, DateTimeStyles.AdjustToUniversal)) -> None
+    | _ -> Some (setStatusCode 304)
 
 
 open Microsoft.AspNetCore.Http.Headers
@@ -73,7 +75,7 @@ let serve (urlParts : string seq) : HttpHandler = fun next ctx -> task {
             | Some upload ->
                 match checkModified upload.UpdatedOn ctx with
                 | Some threeOhFour -> return! threeOhFour next ctx
-                | None -> return! sendFile upload.UpdatedOn path upload.Data next ctx
+                | None -> return! sendFile (upload.UpdatedOn.ToDateTimeUtc ()) path upload.Data next ctx
             | None -> return! Error.notFound next ctx
     else
         return! Error.notFound next ctx
@@ -85,7 +87,7 @@ open System.Text.RegularExpressions
 open MyWebLog.ViewModels
 
 /// Turn a string into a lowercase URL-safe slug
-let makeSlug it = ((Regex """\s+""").Replace ((Regex "[^A-z0-9 ]").Replace (it, ""), "-")).ToLowerInvariant ()
+let makeSlug it = ((Regex """\s+""").Replace ((Regex "[^A-z0-9 -]").Replace (it, ""), "-")).ToLowerInvariant ()
 
 // GET /admin/uploads
 let list : HttpHandler = requireAccess Author >=> fun next ctx -> task {
@@ -143,7 +145,8 @@ let save : HttpHandler = requireAccess Author >=> fun next ctx -> task {
         let upload    = Seq.head ctx.Request.Form.Files
         let fileName  = String.Concat (makeSlug (Path.GetFileNameWithoutExtension upload.FileName),
                                        Path.GetExtension(upload.FileName).ToLowerInvariant ())
-        let  localNow = WebLog.localTime ctx.WebLog DateTime.Now
+        let  now      = Noda.now ()
+        let  localNow = WebLog.localTime ctx.WebLog now
         let  year     = localNow.ToString "yyyy"
         let  month    = localNow.ToString "MM"
         let! form     = ctx.BindFormAsync<UploadFileModel> ()
@@ -156,7 +159,7 @@ let save : HttpHandler = requireAccess Author >=> fun next ctx -> task {
                 {   Id        = UploadId.create ()
                     WebLogId  = ctx.WebLog.Id
                     Path      = Permalink $"{year}/{month}/{fileName}"
-                    UpdatedOn = DateTime.UtcNow
+                    UpdatedOn = now
                     Data      = stream.ToArray ()
                 }
             do! ctx.Data.Upload.Add file

src/MyWebLog/Handlers/User.fs

@@ -2,19 +2,32 @@
 module MyWebLog.Handlers.User
 
 open System
-open System.Security.Cryptography
-open System.Text
+open Microsoft.AspNetCore.Http
+open Microsoft.AspNetCore.Identity
+open MyWebLog
+open NodaTime
 
 // ~~ LOG ON / LOG OFF ~~
 
-/// Hash a password for a given user
-let hashedPassword (plainText : string) (email : string) (salt : Guid) =
-    let allSalt = Array.concat [ salt.ToByteArray (); Encoding.UTF8.GetBytes email ] 
-    use alg     = new Rfc2898DeriveBytes (plainText, allSalt, 2_048)
-    Convert.ToBase64String (alg.GetBytes 64)
+/// Create a password hash a password for a given user
+let createPasswordHash user password =
+    PasswordHasher<WebLogUser>().HashPassword (user, password)
+
+/// Verify whether a password is valid
+let verifyPassword user password (ctx : HttpContext) = backgroundTask {
+    match user with
+    | Some usr ->
+        let hasher = PasswordHasher<WebLogUser> ()
+        match hasher.VerifyHashedPassword (usr, usr.PasswordHash, password) with
+        | PasswordVerificationResult.Success -> return Ok ()
+        | PasswordVerificationResult.SuccessRehashNeeded ->
+            do! ctx.Data.WebLogUser.Update { usr with PasswordHash = hasher.HashPassword (usr, password) }
+            return Ok ()
+        | _ -> return Error "Log on attempt unsuccessful"
+    | None -> return Error "Log on attempt unsuccessful"
+}
 
 open Giraffe
-open MyWebLog
 open MyWebLog.ViewModels
 
 // GET /user/log-on
@@ -37,8 +50,10 @@ open Microsoft.AspNetCore.Authentication.Cookies
 let doLogOn : HttpHandler = fun next ctx -> task {
     let! model   = ctx.BindFormAsync<LogOnModel> ()
     let  data    = ctx.Data
-    match! data.WebLogUser.FindByEmail model.EmailAddress ctx.WebLog.Id with 
-    | Some user when user.PasswordHash = hashedPassword model.Password user.Email user.Salt ->
+    let! tryUser = data.WebLogUser.FindByEmail model.EmailAddress ctx.WebLog.Id
+    match! verifyPassword tryUser model.Password ctx with 
+    | Ok _ ->
+        let user = tryUser.Value
         let claims = seq {
             Claim (ClaimTypes.NameIdentifier, WebLogUserId.toString user.Id)
             Claim (ClaimTypes.Name,           $"{user.FirstName} {user.LastName}")
@@ -51,13 +66,16 @@ let doLogOn : HttpHandler = fun next ctx -> task {
             AuthenticationProperties (IssuedUtc = DateTimeOffset.UtcNow))
         do! data.WebLogUser.SetLastSeen user.Id user.WebLogId
         do! addMessage ctx
-                { UserMessage.success with Message = $"Logged on successfully | Welcome to {ctx.WebLog.Name}!" }
+                { UserMessage.success with
+                    Message = "Log on successful"
+                    Detail  = Some $"Welcome to {ctx.WebLog.Name}!"
+                }
         return!
             match model.ReturnTo with
             | Some url -> redirectTo false url next ctx
             | None -> redirectToGet "admin/dashboard" next ctx
-    | _ ->
-        do! addMessage ctx { UserMessage.error with Message = "Log on attempt unsuccessful" }
+    | Error msg ->
+        do! addMessage ctx { UserMessage.error with Message = msg }
         return! logOn model.ReturnTo next ctx
 }
 
@@ -72,34 +90,18 @@ let logOff : HttpHandler = fun next ctx -> task {
 
 open System.Collections.Generic
 open Giraffe.Htmx
-open Microsoft.AspNetCore.Http
 
-/// Create the hash needed to display the user list
-let private userListHash (ctx : HttpContext) = task {
+/// Got no time for URL/form manipulators...
+let private goAway : HttpHandler = RequestErrors.BAD_REQUEST "really?"
+
+// GET /admin/settings/users
+let all : HttpHandler = requireAccess WebLogAdmin >=> fun next ctx -> task {
     let! users = ctx.Data.WebLogUser.FindByWebLog ctx.WebLog.Id
     return!
         hashForPage "User Administration"
         |> withAntiCsrf ctx
         |> addToHash "users" (users |> List.map (DisplayUser.fromUser ctx.WebLog) |> Array.ofList)
-        |> addViewContext ctx
-}
-
-/// Got no time for URL/form manipulators...
-let private goAway : HttpHandler = RequestErrors.BAD_REQUEST "really?"
-
-// GET /admin/users
-let all : HttpHandler = requireAccess WebLogAdmin >=> fun next ctx -> task {
-    let! hash = userListHash ctx
-    let! tmpl = TemplateCache.get "admin" "user-list-body" ctx.Data 
-    return!
-           addToHash "user_list" (tmpl.Render hash) hash
-        |> adminView "user-list" next ctx
-}
-
-// GET /admin/users/bare
-let bare : HttpHandler = requireAccess WebLogAdmin >=> fun next ctx -> task {
-    let! hash = userListHash ctx
-    return! adminBareView "user-list-body" next ctx hash
+        |> adminBareView "user-list-body" next ctx
 }
 
 /// Show the edit user page
@@ -116,7 +118,7 @@ let private showEdit (model : EditUserModel) : HttpHandler = fun next ctx ->
     |]
     |> adminBareView "user-edit" next ctx
     
-// GET /admin/user/{id}/edit
+// GET /admin/settings/user/{id}/edit
 let edit usrId : HttpHandler = requireAccess WebLogAdmin >=> fun next ctx -> task {
     let isNew   = usrId = "new"
     let userId  = WebLogUserId usrId
@@ -128,44 +130,7 @@ let edit usrId : HttpHandler = requireAccess WebLogAdmin >=> fun next ctx -> tas
     | None -> return! Error.notFound next ctx
 }
 
-// POST /admin/user/save
-let save : HttpHandler = requireAccess WebLogAdmin >=> fun next ctx -> task {
-    let! model   = ctx.BindFormAsync<EditUserModel> ()
-    let  data    = ctx.Data
-    let  tryUser =
-        if model.IsNew then
-            { WebLogUser.empty with
-                Id = WebLogUserId.create ()
-                WebLogId = ctx.WebLog.Id
-                CreatedOn = DateTime.UtcNow
-            } |> someTask
-        else data.WebLogUser.FindById (WebLogUserId model.Id) ctx.WebLog.Id
-    match! tryUser with
-    | Some user when model.Password = model.PasswordConfirm ->
-        let updatedUser = model.UpdateUser user
-        if updatedUser.AccessLevel = Administrator && not (ctx.HasAccessLevel Administrator) then
-            return! goAway next ctx
-        else
-            let updatedUser =
-                if model.Password = "" then updatedUser
-                else
-                    let salt = Guid.NewGuid ()
-                    { updatedUser with PasswordHash = hashedPassword model.Password model.Email salt; Salt = salt }
-            do! (if model.IsNew then data.WebLogUser.Add else data.WebLogUser.Update) updatedUser
-            do! addMessage ctx
-                    { UserMessage.success with
-                        Message = $"""{if model.IsNew then "Add" else "Updat"}ed user successfully"""
-                    }
-            return! bare next ctx
-    | Some _ ->
-        do! addMessage ctx { UserMessage.error with Message = "The passwords did not match; nothing saved" }
-        return!
-            (withHxRetarget $"#user_{model.Id}" >=> showEdit { model with Password = ""; PasswordConfirm = "" })
-                next ctx
-    | None -> return! Error.notFound next ctx
-}
-
-// POST /admin/user/{id}/delete
+// POST /admin/settings/user/{id}/delete
 let delete userId : HttpHandler = requireAccess WebLogAdmin >=> fun next ctx -> task {
     let data = ctx.Data
     match! data.WebLogUser.FindById (WebLogUserId userId) ctx.WebLog.Id with
@@ -179,14 +144,14 @@ let delete userId : HttpHandler = requireAccess WebLogAdmin >=> fun next ctx ->
                         { UserMessage.success with
                             Message = $"User {WebLogUser.displayName user} deleted successfully"
                         }
-                return! bare next ctx
+                return! all next ctx
             | Error msg ->
                 do! addMessage ctx
                         { UserMessage.error with
                             Message = $"User {WebLogUser.displayName user} was not deleted"
                             Detail  = Some msg
                         }
-                return! bare next ctx
+                return! all next ctx
     | None -> return! Error.notFound next ctx
 }
 
@@ -197,43 +162,77 @@ let private showMyInfo (model : EditMyInfoModel) (user : WebLogUser) : HttpHandl
     |> addToHash ViewContext.Model model
     |> addToHash "access_level"    (AccessLevel.toString user.AccessLevel)
     |> addToHash "created_on"      (WebLog.localTime ctx.WebLog user.CreatedOn)
-    |> addToHash "last_seen_on"    (WebLog.localTime ctx.WebLog (defaultArg user.LastSeenOn DateTime.UnixEpoch))
+    |> addToHash "last_seen_on"    (WebLog.localTime ctx.WebLog
+                                         (defaultArg user.LastSeenOn (Instant.FromUnixTimeSeconds 0)))
+                                         
     |> adminView "my-info" next ctx
 
 
-// GET /admin/user/my-info
+// GET /admin/my-info
 let myInfo : HttpHandler = requireAccess Author >=> fun next ctx -> task {
     match! ctx.Data.WebLogUser.FindById ctx.UserId ctx.WebLog.Id with
     | Some user -> return! showMyInfo (EditMyInfoModel.fromUser user) user next ctx
     | None -> return! Error.notFound next ctx
 }
 
-// POST /admin/user/my-info
+// POST /admin/my-info
 let saveMyInfo : HttpHandler = requireAccess Author >=> fun next ctx -> task {
     let! model = ctx.BindFormAsync<EditMyInfoModel> ()
     let  data  = ctx.Data
     match! data.WebLogUser.FindById ctx.UserId ctx.WebLog.Id with
     | Some user when model.NewPassword = model.NewPasswordConfirm ->
-        let pw, salt =
-            if model.NewPassword = "" then
-                user.PasswordHash, user.Salt
-            else
-                let newSalt = Guid.NewGuid ()
-                hashedPassword model.NewPassword user.Email newSalt, newSalt
+        let pw = if model.NewPassword = "" then user.PasswordHash else createPasswordHash user model.NewPassword
         let user =
             { user with
                 FirstName     = model.FirstName
                 LastName      = model.LastName
                 PreferredName = model.PreferredName
                 PasswordHash  = pw
-                Salt          = salt
             }
         do! data.WebLogUser.Update user
         let pwMsg = if model.NewPassword = "" then "" else " and updated your password"
         do! addMessage ctx { UserMessage.success with Message = $"Saved your information{pwMsg} successfully" }
-        return! redirectToGet "admin/user/my-info" next ctx
+        return! redirectToGet "admin/my-info" next ctx
     | Some user ->
         do! addMessage ctx { UserMessage.error with Message = "Passwords did not match; no updates made" }
         return! showMyInfo { model with NewPassword = ""; NewPasswordConfirm = "" } user next ctx
     | None -> return! Error.notFound next ctx
 }
+
+// User save is not statically compilable; not sure why, but we'll revisit it at some point
+#nowarn "3511"
+
+// POST /admin/settings/user/save
+let save : HttpHandler = requireAccess WebLogAdmin >=> fun next ctx -> task {
+    let! model   = ctx.BindFormAsync<EditUserModel> ()
+    let  data    = ctx.Data
+    let  tryUser =
+        if model.IsNew then
+            { WebLogUser.empty with
+                Id        = WebLogUserId.create ()
+                WebLogId  = ctx.WebLog.Id
+                CreatedOn = Noda.now ()
+            } |> someTask
+        else data.WebLogUser.FindById (WebLogUserId model.Id) ctx.WebLog.Id
+    match! tryUser with
+    | Some user when model.Password = model.PasswordConfirm ->
+        let updatedUser = model.UpdateUser user
+        if updatedUser.AccessLevel = Administrator && not (ctx.HasAccessLevel Administrator) then
+            return! goAway next ctx
+        else
+            let toUpdate =
+                if model.Password = "" then updatedUser
+                else { updatedUser with PasswordHash = createPasswordHash updatedUser model.Password }
+            do! (if model.IsNew then data.WebLogUser.Add else data.WebLogUser.Update) toUpdate
+            do! addMessage ctx
+                    { UserMessage.success with
+                        Message = $"""{if model.IsNew then "Add" else "Updat"}ed user successfully"""
+                    }
+            return! all next ctx
+    | Some _ ->
+        do! addMessage ctx { UserMessage.error with Message = "The passwords did not match; nothing saved" }
+        return!
+            (withHxRetarget $"#user_{model.Id}" >=> showEdit { model with Password = ""; PasswordConfirm = "" })
+                next ctx
+    | None -> return! Error.notFound next ctx
+}

src/MyWebLog/Maintenance.fs

@@ -4,6 +4,7 @@ open System
 open System.IO
 open Microsoft.Extensions.DependencyInjection
 open MyWebLog.Data
+open NodaTime
 
 /// Create the web log information
 let private doCreateWebLog (args : string[]) (sp : IServiceProvider) = task {
@@ -41,10 +42,8 @@ let private doCreateWebLog (args : string[]) (sp : IServiceProvider) = task {
             }
     
     // Create the admin user
-    let salt = Guid.NewGuid ()
-    let now  = DateTime.UtcNow
-    
-    do! data.WebLogUser.Add 
+    let now  = Noda.now ()
+    let user =
         { WebLogUser.empty with
             Id            = userId
             WebLogId      = webLogId
@@ -52,11 +51,10 @@ let private doCreateWebLog (args : string[]) (sp : IServiceProvider) = task {
             FirstName     = "Admin"
             LastName      = "User"
             PreferredName = "Admin"
-                PasswordHash  = Handlers.User.hashedPassword args[4] args[3] salt
-                Salt          = salt
             AccessLevel   = accessLevel
             CreatedOn     = now
         }
+    do! data.WebLogUser.Add { user with PasswordHash = Handlers.User.createPasswordHash user args[4] }
 
     // Create the default home page
     do! data.Page.Add
@@ -89,7 +87,7 @@ let private doCreateWebLog (args : string[]) (sp : IServiceProvider) = task {
 let createWebLog args sp = task {
     match args |> Array.length with
     | 5 -> do! doCreateWebLog args sp
-    | _ -> eprintfn "Usage: MyWebLog init [url] [name] [admin-email] [admin-pw]"
+    | _ -> eprintfn "Usage: myWebLog init [url] [name] [admin-email] [admin-pw]"
 }
 
 /// Import prior permalinks from a text files with lines in the format "[old] [new]"
@@ -122,38 +120,39 @@ let private importPriorPermalinks urlBase file (sp : IServiceProvider) = task {
 let importLinks args sp = task {
     match args |> Array.length with
     | 3 -> do! importPriorPermalinks args[1] args[2] sp
-    | _ -> eprintfn "Usage: MyWebLog import-links [url] [file-name]"
+    | _ -> eprintfn "Usage: myWebLog import-links [url] [file-name]"
 }
 
 // Loading a theme and restoring a backup are not statically compilable; this is OK
 #nowarn "3511"
 
+open Microsoft.Extensions.Logging
+
 /// Load a theme from the given ZIP file
 let loadTheme (args : string[]) (sp : IServiceProvider) = task {
-    if args.Length > 1 then
+    if args.Length = 2 then
         let fileName =
             match args[1].LastIndexOf Path.DirectorySeparatorChar with
             | -1 -> args[1]
             | it -> args[1][(it + 1)..]
-        match Handlers.Admin.getThemeName fileName with
-        | Ok themeName ->
+        match Handlers.Admin.Theme.deriveIdFromFileName fileName with
+        | Ok themeId ->
             let data   = sp.GetRequiredService<IData> ()
-            let clean  = if args.Length > 2 then bool.Parse args[2] else true
             use stream = File.Open (args[1], FileMode.Open)
             use copy   = new MemoryStream ()
             do! stream.CopyToAsync copy
-            do! Handlers.Admin.loadThemeFromZip themeName copy clean data
-            printfn $"Theme {themeName} loaded successfully"
+            let! theme = Handlers.Admin.Theme.loadFromZip themeId copy data
+            let fac = sp.GetRequiredService<ILoggerFactory> ()
+            let log = fac.CreateLogger "MyWebLog.Themes"
+            log.LogInformation $"{theme.Name} v{theme.Version} ({ThemeId.toString theme.Id}) loaded"
         | Error message -> eprintfn $"{message}"
     else
-        eprintfn "Usage: MyWebLog load-theme [theme-zip-file-name] [*clean-load]"
-        eprintfn "         * optional, defaults to true"
+        eprintfn "Usage: myWebLog load-theme [theme-zip-file-name]"
 }
 
 /// Back up a web log's data
 module Backup =
     
-    open System.Threading.Tasks
     open MyWebLog.Converters
     open Newtonsoft.Json
 
@@ -163,7 +162,7 @@ module Backup =
             Id : ThemeAssetId
             
             /// The updated date for this asset
-            UpdatedOn : DateTime
+            UpdatedOn : Instant
             
             /// The data for this asset, base-64 encoded
             Data : string
@@ -195,7 +194,7 @@ module Backup =
             Path : Permalink
             
             /// The date/time this upload was last updated (file time)
-            UpdatedOn : DateTime
+            UpdatedOn : Instant
             
             /// The data for the upload, base-64 encoded
             Data : string
@@ -249,10 +248,9 @@ module Backup =
             Uploads : EncodedUpload list
         }
     
-    /// Create a JSON serializer (uses RethinkDB data implementation's JSON converters)
+    /// Create a JSON serializer
     let private getSerializer prettyOutput =
-        let serializer = JsonSerializer.CreateDefault ()
-        Json.all () |> Seq.iter serializer.Converters.Add
+        let serializer = Json.configure (JsonSerializer.CreateDefault ())
         if prettyOutput then serializer.Formatting <- Formatting.Indented
         serializer
     
@@ -380,7 +378,8 @@ module Backup =
         printfn ""
         printfn "- Importing theme..."
         do! data.Theme.Save restore.Theme
-        let! _ = restore.Assets |> List.map (EncodedAsset.toAsset >> data.ThemeAsset.Save) |> Task.WhenAll
+        restore.Assets
+        |> List.iter (EncodedAsset.toAsset >> data.ThemeAsset.Save >> Async.AwaitTask >> Async.RunSynchronously)
         
         // Restore web log data
         
@@ -391,18 +390,19 @@ module Backup =
         do! data.WebLogUser.Restore restore.Users
         
         printfn "- Restoring categories and tag mappings..."
-        do! data.TagMap.Restore   restore.TagMappings
-        do! data.Category.Restore restore.Categories
+        if not (List.isEmpty restore.TagMappings) then do! data.TagMap.Restore   restore.TagMappings
+        if not (List.isEmpty restore.Categories)  then do! data.Category.Restore restore.Categories
         
         printfn "- Restoring pages..."
-        do! data.Page.Restore restore.Pages
+        if not (List.isEmpty restore.Pages) then do! data.Page.Restore restore.Pages
         
         printfn "- Restoring posts..."
-        do! data.Post.Restore restore.Posts
+        if not (List.isEmpty restore.Posts) then do! data.Post.Restore restore.Posts
         
         // TODO: comments not yet implemented
         
         printfn "- Restoring uploads..."
+        if not (List.isEmpty restore.Uploads) then
             do! data.Upload.Restore (restore.Uploads |> List.map EncodedUpload.toUpload)
         
         displayStats "Restored for <>NAME<>:" restore.WebLog restore
@@ -449,7 +449,7 @@ module Backup =
                 do! createBackup webLog fileName prettyOutput data
             | None -> eprintfn $"Error: no web log found for {args[1]}"
         else
-            eprintfn """Usage: MyWebLog backup [url-base] [*backup-file-name] [**"pretty"]"""
+            eprintfn """Usage: myWebLog backup [url-base] [*backup-file-name] [**"pretty"]"""
             eprintfn """          * optional - default is [web-log-slug].json"""
             eprintfn """         ** optional - default is non-pretty JSON output"""
     }
@@ -461,7 +461,7 @@ module Backup =
             let newUrlBase = if args.Length = 3 then Some args[2] else None
             do! restoreBackup args[1] newUrlBase (args[0] <> "do-restore") data
         else
-            eprintfn "Usage: MyWebLog restore [backup-file-name] [*url-base]"
+            eprintfn "Usage: myWebLog restore [backup-file-name] [*url-base]"
             eprintfn "         * optional - will restore to original URL base if omitted"
             eprintfn "       (use do-restore to skip confirmation prompt)"
     }
@@ -486,5 +486,24 @@ let private doUserUpgrade urlBase email (data : IData) = task {
 let upgradeUser (args : string[]) (sp : IServiceProvider) = task {
     match args.Length with
     | 3 -> do! doUserUpgrade args[1] args[2] (sp.GetRequiredService<IData> ())
-    | _ -> eprintfn "Usage: MyWebLog upgrade-user [web-log-url-base] [email-address]"
+    | _ -> eprintfn "Usage: myWebLog upgrade-user [web-log-url-base] [email-address]"
+}
+
+/// Set a user's password
+let doSetPassword urlBase email password (data : IData) = task {
+    match! data.WebLog.FindByHost urlBase with
+    | Some webLog ->
+        match! data.WebLogUser.FindByEmail email webLog.Id with
+        | Some user ->
+            do! data.WebLogUser.Update { user with PasswordHash = Handlers.User.createPasswordHash user password }
+            printfn $"Password for user {email} at {webLog.Name} set successfully"
+        | None -> eprintfn $"ERROR: no user {email} found at {urlBase}"
+    | None -> eprintfn $"ERROR: no web log found for {urlBase}"
+}
+
+/// Set a user's password if the command-line arguments are good
+let setPassword (args : string[]) (sp : IServiceProvider) = task {
+    match args.Length with
+    | 4 -> do! doSetPassword args[1] args[2] args[3] (sp.GetRequiredService<IData> ())
+    | _ -> eprintfn "Usage: myWebLog set-password [web-log-url-base] [email-address] [password]"
 }

src/MyWebLog/MyWebLog.fsproj

@@ -2,11 +2,8 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
     <PublishSingleFile>true</PublishSingleFile>
     <SelfContained>false</SelfContained>
-    <DebugType>embedded</DebugType>
-    <NoWarn>3391</NoWarn>
   </PropertyGroup>
 
   <ItemGroup>

src/MyWebLog/Program.fs

@@ -29,11 +29,14 @@ type WebLogMiddleware (next : RequestDelegate, log : ILogger<WebLogMiddleware>)
 open System
 open Microsoft.Extensions.DependencyInjection
 open MyWebLog.Data
+open Newtonsoft.Json
+open Npgsql
 
 /// Logic to obtain a data connection and implementation based on configured values
 module DataImplementation =
     
     open MyWebLog.Converters
+    // open Npgsql.Logging
     open RethinkDb.Driver.FSharp
     open RethinkDb.Driver.Net
 
@@ -43,23 +46,29 @@ module DataImplementation =
         let await it = (Async.AwaitTask >> Async.RunSynchronously) it
         let connStr    name = config.GetConnectionString name
         let hasConnStr name = (connStr >> isNull >> not) name
-        let createSQLite connStr =
+        let createSQLite connStr : IData =
             let log  = sp.GetRequiredService<ILogger<SQLiteData>> ()
             let conn = new SqliteConnection (connStr)
             log.LogInformation $"Using SQLite database {conn.DataSource}"
             await (SQLiteData.setUpConnection conn)
-            SQLiteData (conn, log)
+            SQLiteData (conn, log, Json.configure (JsonSerializer.CreateDefault ()))
         
         if hasConnStr "SQLite" then
-            upcast createSQLite (connStr "SQLite")
+            createSQLite (connStr "SQLite")
         elif hasConnStr "RethinkDB" then
             let log        = sp.GetRequiredService<ILogger<RethinkDbData>> ()
-            Json.all () |> Seq.iter Converter.Serializer.Converters.Add 
+            let _          = Json.configure Converter.Serializer 
             let rethinkCfg = DataConfig.FromUri (connStr "RethinkDB")
             let conn       = await (rethinkCfg.CreateConnectionAsync log)
-            upcast RethinkDbData (conn, rethinkCfg, log)
+            RethinkDbData (conn, rethinkCfg, log)
+        elif hasConnStr "PostgreSQL" then
+            let log  = sp.GetRequiredService<ILogger<PostgresData>> ()
+            // NpgsqlLogManager.Provider <- ConsoleLoggingProvider NpgsqlLogLevel.Debug
+            let conn = new NpgsqlConnection (connStr "PostgreSQL")
+            log.LogInformation $"Using PostgreSQL database {conn.Host}:{conn.Port}/{conn.Database}"
+            PostgresData (conn, log, Json.configure (JsonSerializer.CreateDefault ()))
         else
-            upcast createSQLite "Data Source=./myweblog.db;Cache=Shared"
+            createSQLite "Data Source=./myweblog.db;Cache=Shared"
 
 
 open System.Threading.Tasks
@@ -76,17 +85,20 @@ let showHelp () =
     printfn "init          Initializes a new web log"
     printfn "load-theme    Load a theme"
     printfn "restore       Restore a JSON file backup (prompt before overwriting)"
+    printfn "set-password  Set a password for a specific user"
     printfn "upgrade-user  Upgrade a WebLogAdmin user to a full Administrator"
     printfn " "
     printfn "For more information on a particular command, run it with no options."
     Task.FromResult ()
 
 
+open System.IO
 open Giraffe
 open Giraffe.EndpointRouting
 open Microsoft.AspNetCore.Authentication.Cookies
 open Microsoft.AspNetCore.Builder
 open Microsoft.AspNetCore.HttpOverrides
+open Microsoft.Extensions.Caching.Distributed
 open NeoSmart.Caching.Sqlite
 open RethinkDB.DistributedCache
 
@@ -109,6 +121,7 @@ let rec main args =
     
     let sp = builder.Services.BuildServiceProvider ()
     let data = DataImplementation.get sp
+    let _ = builder.Services.AddSingleton<JsonSerializer> data.Serializer
     
     task {
         do! data.StartUp ()
@@ -120,23 +133,36 @@ let rec main args =
     match data with
     | :? RethinkDbData as rethink ->
         // A RethinkDB connection is designed to work as a singleton
-        builder.Services.AddSingleton<IData> data |> ignore
+        let _ = builder.Services.AddSingleton<IData> data
+        let _ =
             builder.Services.AddDistributedRethinkDBCache (fun opts ->
                 opts.TableName  <- "Session"
                 opts.Connection <- rethink.Conn)
-        |> ignore
+        ()
     | :? SQLiteData as sql ->
         // ADO.NET connections are designed to work as per-request instantiation
         let cfg  = sp.GetRequiredService<IConfiguration> ()
+        let _ =
             builder.Services.AddScoped<SqliteConnection> (fun sp ->
                 let conn = new SqliteConnection (sql.Conn.ConnectionString)
                 SQLiteData.setUpConnection conn |> Async.AwaitTask |> Async.RunSynchronously
                 conn)
-        |> ignore
-        builder.Services.AddScoped<IData, SQLiteData> () |> ignore
+        let _ = builder.Services.AddScoped<IData, SQLiteData> () |> ignore
         // Use SQLite for caching as well
-        let cachePath = Option.ofObj (cfg.GetConnectionString "SQLiteCachePath") |> Option.defaultValue "./session.db"
-        builder.Services.AddSqliteCache (fun o -> o.CachePath <- cachePath) |> ignore
+        let cachePath = defaultArg (Option.ofObj (cfg.GetConnectionString "SQLiteCachePath")) "./session.db"
+        let _ = builder.Services.AddSqliteCache (fun o -> o.CachePath <- cachePath)
+        ()
+    | :? PostgresData ->
+        // ADO.NET connections are designed to work as per-request instantiation
+        let cfg  = sp.GetRequiredService<IConfiguration> ()
+        let _ =
+            builder.Services.AddScoped<NpgsqlConnection> (fun sp ->
+                new NpgsqlConnection (cfg.GetConnectionString "PostgreSQL"))
+        let _ = builder.Services.AddScoped<IData, PostgresData> ()
+        let _ =
+            builder.Services.AddSingleton<IDistributedCache> (fun sp ->
+                Postgres.DistributedCache (cfg.GetConnectionString "PostgreSQL") :> IDistributedCache)
+        ()
     | _ -> ()
     
     let _ = builder.Services.AddSession(fun opts ->
@@ -158,11 +184,16 @@ let rec main args =
     | Some it when it = "restore"      -> Maintenance.Backup.restoreFromBackup args app.Services
     | Some it when it = "do-restore"   -> Maintenance.Backup.restoreFromBackup args app.Services
     | Some it when it = "upgrade-user" -> Maintenance.upgradeUser              args app.Services
+    | Some it when it = "set-password" -> Maintenance.setPassword              args app.Services
     | Some it when it = "help"         -> showHelp ()
     | Some it ->
         printfn $"""Unrecognized command "{it}" - valid commands are:"""
         showHelp ()
-    | None ->
+    | None -> task {
+        // Load all themes in the application directory
+        for themeFile in Directory.EnumerateFiles (".", "*-theme.zip") do
+            do! Maintenance.loadTheme [| ""; themeFile |] app.Services
+            
         let _ = app.UseForwardedHeaders ()
         let _ = app.UseCookiePolicy (CookiePolicyOptions (MinimumSameSitePolicy = SameSiteMode.Strict))
         let _ = app.UseMiddleware<WebLogMiddleware> ()
@@ -172,7 +203,8 @@ let rec main args =
         let _ = app.UseSession ()
         let _ = app.UseGiraffe Handlers.Routes.endpoint
 
-        Task.FromResult (app.Run ())
+        app.Run ()
+    }
     |> Async.AwaitTask |> Async.RunSynchronously
     
     0 // Exit code

src/MyWebLog/appsettings.json

@@ -1,5 +1,5 @@
 {
-  "Generator": "myWebLog 2.0-beta05",
+  "Generator": "myWebLog 2.0-rc2",
   "Logging": {
     "LogLevel": {
       "MyWebLog.Handlers": "Information"

src/admin-theme/_edit-common.liquid

@@ -0,0 +1,32 @@
+<div class="form-floating pb-3">
+  <input type="text" name="Title" id="title" class="form-control" placeholder="Title" autofocus required
+         value="{{ model.title }}">
+  <label for="title">Title</label>
+</div>
+<div class="form-floating pb-3">
+  <input type="text" name="Permalink" id="permalink" class="form-control" placeholder="Permalink" required
+         value="{{ model.permalink }}">
+  <label for="permalink">Permalink</label>
+  {%- unless model.is_new %}
+    {%- assign entity_url_base = "admin/" | append: entity | append: "/" | append: entity_id -%}
+    <span class="form-text">
+      <a href="{{ entity_url_base | append: "/permalinks" | relative_link }}">Manage Permalinks</a>
+      <span class="text-muted"> &bull; </span>
+      <a href="{{ entity_url_base | append: "/revisions" | relative_link }}">Manage Revisions</a>
+    </span>
+  {%- endunless -%}
+</div>
+<div class="mb-2">
+  <label for="text">Text</label> &nbsp; &nbsp;
+  <div class="btn-group btn-group-sm" role="group" aria-label="Text format button group">
+    <input type="radio" name="Source" id="source_html" class="btn-check" value="HTML"
+           {%- if model.source == "HTML" %} checked="checked"{% endif %}>
+    <label class="btn btn-sm btn-outline-secondary" for="source_html">HTML</label>
+    <input type="radio" name="Source" id="source_md" class="btn-check" value="Markdown"
+           {%- if model.source == "Markdown" %} checked="checked"{% endif %}>
+    <label class="btn btn-sm btn-outline-secondary" for="source_md">Markdown</label>
+  </div>
+</div>
+<div class="pb-3">
+  <textarea name="Text" id="text" class="form-control" rows="20">{{ model.text }}</textarea>
+</div>

src/admin-theme/_layout.liquid

@@ -7,28 +7,42 @@
         <span class="navbar-toggler-icon"></span>
       </button>
       <div class="collapse navbar-collapse" id="navbarText">
-        {% if is_logged_on -%}
+        {%- if is_logged_on %}
           <ul class="navbar-nav">
             {{ "admin/dashboard" | nav_link: "Dashboard" }}
-            {% if is_author %}
+            {%- if is_author %}
               {{ "admin/pages" | nav_link: "Pages" }}
               {{ "admin/posts" | nav_link: "Posts" }}
               {{ "admin/uploads" | nav_link: "Uploads" }}
-            {% endif %}
-            {% if is_web_log_admin %}
+            {%- endif %}
+            {%- if is_web_log_admin %}
               {{ "admin/categories" | nav_link: "Categories" }}
-              {{ "admin/users" | nav_link: "Users" }}
               {{ "admin/settings" | nav_link: "Settings" }}
-            {% endif %}
+            {%- endif %}
+            {%- if is_administrator %}
+              {{ "admin/administration" | nav_link: "Admin" }}
+            {%- endif %}
           </ul>
         {%- endif %}
         <ul class="navbar-nav flex-grow-1 justify-content-end">
-          {% if is_logged_on -%}
-            {{ "admin/user/my-info" | nav_link: "My Info" }}
+          {%- if is_logged_on %}
+            {{ "admin/my-info" | nav_link: "My Info" }}
+            <li class="nav-item">
+              <a class="nav-link" href="https://bitbadger.solutions/open-source/myweblog/#how-to-use-myweblog"
+                 target="_blank">
+                Docs
+              </a>
+            </li>
             <li class="nav-item">
               <a class="nav-link" href="{{ "user/log-off" | relative_link }}" hx-boost="false">Log Off</a>
             </li>
           {%- else -%}
+            <li class="nav-item">
+              <a class="nav-link" href="https://bitbadger.solutions/open-source/myweblog/#how-to-use-myweblog"
+                 target="_blank">
+                Docs
+              </a>
+            </li>
             {{ "user/log-on" | nav_link: "Log On" }}
           {%- endif %}
         </ul>
@@ -36,29 +50,36 @@
     </div>
   </nav>
 </header>
-<main class="mx-3 mt-3">
-  <div class="messages mt-2" id="msgContainer">
+<div id="toastHost" class="position-fixed top-0 w-100" aria-live="polite" aria-atomic="true">
+  <div id="toasts" class="toast-container position-absolute p-3 mt-5 top-0 end-0">
     {% for msg in messages %}
-      <div role="alert" class="alert alert-{{ msg.level }} alert-dismissible fade show">
+      <div class="toast" role="alert" aria-live="assertive" aria-atomic="true"
+      {%- unless msg.level == "success" %} data-bs-autohide="false"{% endunless %}>
+        <div class="toast-header bg-{{ msg.level }}{% unless msg.level == "warning" %} text-white{% endunless %}">
+          <strong class="me-auto text-uppercase">
+            {% if msg.level == "danger" %}error{% else %}{{ msg.level}}{% endif %}
+          </strong>
+          <button type="button" class="btn-close" data-bs-dismiss="toast" aria-label="Close"></button>
+        </div>
+        <div class="toast-body bg-{{ msg.level }} bg-opacity-25">
           {{ msg.message }}
-        <button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
-        {% if msg.detail %}
+          {%- if msg.detail %}
             <hr>
             {{ msg.detail.value }}
-        {% endif %}
+          {%- endif %}
+        </div>
       </div>
     {% endfor %}
   </div>
+</div>
+<main class="mx-3 mt-3">
+  <div class="load-overlay p-5" id="loadOverlay"><h1 class="p-3">Loading&hellip;</h1></div>
   {{ content }}
 </main>
 <footer class="position-fixed bottom-0 w-100">
-  <div class="container-fluid">
-    <div class="row">
-      <div class="col-xs-12 text-end">
+  <div class="text-end text-white me-2">
     {%- assign version = generator | split: " " -%}
     <small class="me-1 align-baseline">v{{ version[1] }}</small>
     <img src="{{ "themes/admin/logo-light.png" | relative_link }}" alt="myWebLog" width="120" height="34">
   </div>
-    </div>
-  </div>
 </footer>

src/admin-theme/_theme-list-columns.liquid

@@ -0,0 +1,3 @@
+{%- assign theme_col = "col-12 col-md-6" -%}
+{%- assign slug_col  = "d-none d-md-block col-md-3" -%}
+{%- assign tmpl_col  = "d-none d-md-block col-md-3" -%}

src/admin-theme/_user-list-columns.liquid

@@ -0,0 +1,4 @@
+{%- assign user_col  = "col-12 col-md-4 col-xl-3" -%}
+{%- assign email_col = "col-12 col-md-4 col-xl-4" -%}
+{%- assign cre8_col  = "d-none d-xl-block col-xl-2" -%}
+{%- assign last_col  = "col-12 col-md-4 col-xl-3" -%}

src/admin-theme/admin-dashboard.liquid

@@ -0,0 +1,108 @@
+<h2 class="my-3">{{ page_title }}</h2>
+<article>
+  <fieldset class="container mb-3 pb-0">
+    <legend>Themes</legend>
+    <a href="{{ "admin/theme/new" | relative_link }}" class="btn btn-primary btn-sm mb-3"
+       hx-target="#theme_new">
+      Upload a New Theme
+    </a>
+    <div class="container g-0">
+      {% include_template "_theme-list-columns" %}
+      <div class="row mwl-table-heading">
+        <div class="{{ theme_col }}">Theme</div>
+        <div class="{{ slug_col }} d-none d-md-inline-block">Slug</div>
+        <div class="{{ tmpl_col }} d-none d-md-inline-block">Templates</div>
+      </div>
+    </div>
+    <div class="row mwl-table-detail" id="theme_new"></div>
+    {{ theme_list }}
+  </fieldset>
+  <fieldset class="container mb-3 pb-0">
+    {%- assign cache_base_url = "admin/cache/" -%}
+    <legend>Caches</legend>
+    <div class="row pb-2">
+      <div class="col">
+        <p>
+          myWebLog uses a few caches to ensure that it serves pages as fast as possible.
+          (<a href="https://bitbadger.solutions/open-source/myweblog/advanced.html#cache-management"
+              target="_blank">more information</a>)
+        </p>
+      </div>
+    </div>
+    <div class="row">
+      <div class="col-12 col-lg-6 pb-3">
+        <div class="card">
+          <header class="card-header text-white bg-secondary">Web Logs</header>
+          <div class="card-body pb-0">
+            <h6 class="card-subtitle text-muted pb-3">
+              These caches include the page list and categories for each web log
+            </h6>
+            {%- assign web_log_base_url = cache_base_url | append: "web-log/" -%}
+            <form method="post" class="container g-0" hx-boost="false" hx-target="body"
+                  hx-swap="innerHTML show:window:top">
+              <input type="hidden" name="{{ csrf.form_field_name }}" value="{{ csrf.request_token }}">
+              <button type="submit" class="btn btn-sm btn-primary mb-2"
+                      hx-post="{{ web_log_base_url | append: "all/refresh" | relative_link }}">
+                Refresh All
+              </button>
+              <div class="row mwl-table-heading">
+                <div class="col">Web Log</div>
+              </div>
+              {%- for web_log in web_logs %}
+                <div class="row mwl-table-detail">
+                  <div class="col">
+                    {{ web_log[1] }}<br>
+                    <small>
+                      <span class="text-muted">{{ web_log[2] }}</span><br>
+                      {%- assign refresh_url = web_log_base_url | append: web_log[0] | append: "/refresh" | relative_link -%}
+                      <a href="{{ refresh_url }}" hx-post="{{ refresh_url }}">Refresh</a>
+                    </small>
+                  </div>
+                </div>
+              {%- endfor %}
+            </form>
+          </div>
+        </div>
+      </div>
+      <div class="col-12 col-lg-6 pb-3">
+        <div class="card">
+          <header class="card-header text-white bg-secondary">Themes</header>
+          <div class="card-body pb-0">
+            <h6 class="card-subtitle text-muted pb-3">
+              The theme template cache is filled on demand as pages are displayed; refreshing a theme with no cached
+              templates will still refresh its asset cache
+            </h6>
+            {%- assign theme_base_url = cache_base_url | append: "theme/" -%}
+            <form method="post" class="container g-0" hx-boost="false" hx-target="body"
+                  hx-swap="innerHTML show:window:top">
+              <input type="hidden" name="{{ csrf.form_field_name }}" value="{{ csrf.request_token }}">
+              <button type="submit" class="btn btn-sm btn-primary mb-2"
+                      hx-post="{{ theme_base_url | append: "all/refresh" | relative_link }}">
+                Refresh All
+              </button>
+              <div class="row mwl-table-heading">
+                <div class="col-8">Theme</div>
+                <div class="col-4">Cached</div>
+              </div>
+              {%- for theme in cached_themes %}
+                {% unless theme[0] == "admin" %}
+                  <div class="row mwl-table-detail">
+                    <div class="col-8">
+                      {{ theme[1] }}<br>
+                      <small>
+                        <span class="text-muted">{{ theme[0] }} &bull; </span>
+                        {%- assign refresh_url = theme_base_url | append: theme[0] | append: "/refresh" | relative_link -%}
+                        <a href="{{ refresh_url }}" hx-post="{{ refresh_url }}">Refresh</a>
+                      </small>
+                    </div>
+                    <div class="col-4">{{ theme[2] }}</div>
+                  </div>
+                {% endunless %}
+              {%- endfor %}
+            </form>
+          </div>
+        </div>
+      </div>
+    </div>
+  </fieldset>
+</article>

src/admin-theme/category-edit.liquid

@@ -7,21 +7,21 @@
       <div class="row">
         <div class="col-12 col-sm-6 col-lg-4 col-xxl-3 offset-xxl-1 mb-3">
           <div class="form-floating">
-            <input type="text" name="Name" id="name" class="form-control form-control-sm" placeholder="Name" autofocus
-                   required value="{{ model.name | escape }}">
+            <input type="text" name="Name" id="name" class="form-control" placeholder="Name" autofocus required
+                   value="{{ model.name | escape }}">
             <label for="name">Name</label>
           </div>
         </div>
         <div class="col-12 col-sm-6 col-lg-4 col-xxl-3 mb-3">
           <div class="form-floating">
-            <input type="text" name="Slug" id="slug" class="form-control form-control-sm" placeholder="Slug" required
+            <input type="text" name="Slug" id="slug" class="form-control" placeholder="Slug" required
                    value="{{ model.slug | escape }}">
             <label for="slug">Slug</label>
           </div>
         </div>
         <div class="col-12 col-lg-4 col-xxl-3 offset-xxl-1 mb-3">
           <div class="form-floating">
-            <select name="ParentId" id="parentId" class="form-control form-control-sm">
+            <select name="ParentId" id="parentId" class="form-control">
               <option value=""{% if model.parent_id == "" %} selected="selected"{% endif %}>
                 &ndash; None &ndash;
               </option>
@@ -38,7 +38,7 @@
         </div>
         <div class="col-12 col-xl-10 offset-xl-1 mb-3">
           <div class="form-floating">
-            <input name="Description" id="description" class="form-control form-control-sm"
+            <input name="Description" id="description" class="form-control"
                    placeholder="A short description of this category" value="{{ model.description | escape }}">
             <label for="description">Description</label>
           </div>

src/admin-theme/category-list-body.liquid

@@ -1,10 +1,19 @@
-<form method="post" id="catList" class="container" hx-target="this" hx-swap="outerHTML show:window:top">
-  <input type="hidden" name="{{ csrf.form_field_name }}" value="{{ csrf.request_token }}">
-  <div class="row mwl-table-detail" id="cat_new"></div>
+<div id="catList" class="container">
+  <div class="row">
+    <div class="col">
       {%- assign cat_count = categories | size -%}
       {% if cat_count > 0 %}
         {%- assign cat_col  = "col-12 col-md-6 col-xl-5 col-xxl-4" -%}
         {%- assign desc_col = "col-12 col-md-6 col-xl-7 col-xxl-8" -%}
+        <div class="container">
+          <div class="row mwl-table-heading">
+            <div class="{{ cat_col }}">Category<span class="d-md-none">; Description</span></div>
+            <div class="{{ desc_col }} d-none d-md-inline-block">Description</div>
+          </div>
+        </div>
+        <form method="post" class="container" hx-target="#catList" hx-swap="outerHTML show:window:top">
+          <input type="hidden" name="{{ csrf.form_field_name }}" value="{{ csrf.request_token }}">
+          <div class="row mwl-table-detail" id="cat_new"></div>
           {% for cat in categories -%}
             <div class="row mwl-table-detail" id="cat_{{ cat.id }}">
               <div class="{{ cat_col }} no-wrap">
@@ -37,9 +46,12 @@
               </div>
             </div>
           {%- endfor %}
+        </form>
       {%- else -%}
-    <div class="row">
-      <div class="col-12 text-muted fst-italic text-center">This web log has no categores defined</div>
+        <div id="cat_new">
+          <p class="text-muted fst-italic text-center">This web log has no categores defined</p>
         </div>
       {%- endif %}
-</form>
+    </div>
+  </div>
+</div>

src/admin-theme/category-list.liquid

@@ -4,13 +4,5 @@
      hx-target="#cat_new">
     Add a New Category
   </a>
-  <div class="container">
-    {%- assign cat_col  = "col-12 col-md-6 col-xl-5 col-xxl-4" -%}
-    {%- assign desc_col = "col-12 col-md-6 col-xl-7 col-xxl-8" -%}
-    <div class="row mwl-table-heading">
-      <div class="{{ cat_col }}">Category<span class="d-md-none">; Description</span></div>
-      <div class="{{ desc_col }} d-none d-md-inline-block">Description</div>
-    </div>
-  </div>
   {{ category_list }}
 </article>

src/admin-theme/layout-partial.liquid

@@ -5,6 +5,5 @@
   </head>
   <body>
     {% include_template "_layout" %}
-    <script>Admin.dismissSuccesses()</script>
   </body>
 </html>

src/admin-theme/layout.liquid

@@ -4,29 +4,16 @@
     <meta name="viewport" content="width=device-width, initial-scale=1">
     <meta name="generator" content="{{ generator }}">
     <title>{{ page_title | strip_html }} &laquo; Admin &laquo; {{ web_log.name | strip_html }}</title>
-    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/bootstrap.min.css"
-          integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">
+    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css"
+          integrity="sha384-1BmE4kWBq78iYhFldvKuhfTAU6auU8tT94WrHftjDbrCEXSU1oBoqyl2QvZ6jIW3" crossorigin="anonymous">
     <link rel="stylesheet" href="{{ "themes/admin/admin.css" | relative_link }}">
   </head>
-  <body hx-boost="true">
+  <body hx-boost="true" hx-indicator="#loadOverlay">
     {% include_template "_layout" %}
-    <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/js/bootstrap.bundle.min.js"
-            integrity="sha384-MrcW6ZMFYlzcLA8Nl+NtUVF0sA7MsXsP1UyJoMp4YLEuNSfAP+JcXn/tWtIaxVXM"
+    <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.bundle.min.js"
+            integrity="sha384-ka7Sk0Gln4gmtz2MlQnikT1wXgYsOg+OMhuP+IlRH9sENBO0LRn5q+8nbTov4+1p"
             crossorigin="anonymous"></script>
     {{ htmx_script }}
-    <script>
-      const cssLoaded = [...document.styleSheets].filter(it => it.href.indexOf("bootstrap.min.css") > -1).length > 0
-      if (!cssLoaded) {
-        const local = document.createElement("link")
-        local.rel = "stylesheet"
-        local.href = "{{ "themes/admin/bootstrap.min.css" | relative_link }}"
-        document.getElementsByTagName("link")[0].prepend(local)
-      }
-      setTimeout(function () {
-        if (!bootstrap) document.write('<script src=\"{{ "script/bootstrap.bundle.min.js" | relative_link }}\"><\/script>')
-      }, 2000)
-    </script>
     <script src="{{ "themes/admin/admin.js" | relative_link }}"></script>
-    <script>Admin.dismissSuccesses()</script>
   </body>
 </html>

src/admin-theme/my-info.liquid

@@ -1,6 +1,6 @@
 <h2 class="my-3">{{ page_title }}</h2>
 <article>
-  <form action="{{ "admin/user/my-info" | relative_link }}" method="post">
+  <form action="{{ "admin/my-info" | relative_link }}" method="post">
     <input type="hidden" name="{{ csrf.form_field_name }}" value="{{ csrf.request_token }}">
     <div class="d-flex flex-row flex-wrap justify-content-around">
       <div class="text-center mb-3 lh-sm">

src/admin-theme/page-edit.liquid

@@ -6,39 +6,9 @@
     <div class="container">
       <div class="row mb-3">
         <div class="col-9">
-          <div class="form-floating pb-3">
-            <input type="text" name="Title" id="title" class="form-control" autofocus required
-                   value="{{ model.title }}">
-            <label for="title">Title</label>
-          </div>
-          <div class="form-floating pb-3">
-            <input type="text" name="Permalink" id="permalink" class="form-control" required
-                   value="{{ model.permalink }}">
-            <label for="permalink">Permalink</label>
-            {%- unless model.is_new %}
-              <span class="form-text">
-                <a href="{{ "admin/page/" | append: model.page_id | append: "/permalinks" | relative_link }}">
-                  Manage Permalinks
-                </a>
-                <span class="text-muted"> &bull; </span>
-                <a href="{{ "admin/page/" | append: model.page_id | append: "/revisions" | relative_link }}">
-                  Manage Revisions
-                </a>
-              </span>
-            {% endunless -%}
-          </div>
-          <div class="mb-2">
-            <label for="text">Text</label> &nbsp; &nbsp;
-            <input type="radio" name="Source" id="source_html" class="btn-check" value="HTML"
-            {%- if model.source == "HTML" %} checked="checked"{% endif %}>
-            <label class="btn btn-sm btn-outline-secondary" for="source_html">HTML</label>
-            <input type="radio" name="Source" id="source_md" class="btn-check" value="Markdown"
-            {%- if model.source == "Markdown" %} checked="checked"{% endif %}>
-            <label class="btn btn-sm btn-outline-secondary" for="source_md">Markdown</label>
-          </div>
-          <div class="mb-3">
-            <textarea name="Text" id="text" class="form-control">{{ model.text }}</textarea>
-          </div>
+          {%- assign entity = "page" -%}
+          {%- assign entity_id = model.page_id -%}
+          {% include_template "_edit-common" %}
         </div>
         <div class="col-3">
           <div class="form-floating pb-3">

src/admin-theme/page-list.liquid

@@ -2,6 +2,7 @@
 <article>
   <a href="{{ "admin/page/new/edit" | relative_link }}" class="btn btn-primary btn-sm mb-3">Create a New Page</a>
   {%- assign page_count = pages | size -%}
+  {% if page_count > 0 %}
     {%- assign title_col = "col-12 col-md-5" -%}
     {%- assign link_col  = "col-12 col-md-5" -%}
     {%- assign upd8_col  = "col-12 col-md-2" -%}
@@ -14,7 +15,6 @@
         <div class="{{ link_col }} d-none d-md-inline-block">Permalink</div>
         <div class="{{ upd8_col }} d-none d-md-inline-block">Updated</div>
       </div>
-    {% if page_count > 0 %}
       {% for pg in pages -%}
         <div class="row mwl-table-detail">
           <div class="{{ title_col }}">
@@ -48,18 +48,13 @@
           </div>
         </div>
       {%- endfor %}
-    {% else %}
-      <div class="row">
-        <div class="col text-muted fst-italic text-center">This web log has no pages</div>
-      </div>
-    {% endif %}
     </form>
     {% if page_nbr > 1 or page_count == 25 %}
-    <div class="d-flex justify-content-evenly pb-3">
+      <div class="d-flex justify-content-evenly mb-3">
         <div>
           {% if page_nbr > 1 %}
             <p>
-            <a class="btn btn-default" href="{{ "admin/pages" | append: prev_page | relative_link }}">
+              <a class="btn btn-secondary" href="{{ "admin/pages" | append: prev_page | relative_link }}">
                 &laquo; Previous
               </a>
             </p>
@@ -68,10 +63,15 @@
         <div class="text-right">
           {% if page_count == 25 %}
             <p>
-            <a class="btn btn-default" href="{{ "admin/pages" | append: next_page | relative_link }}">Next &raquo;</a>
+              <a class="btn btn-secondary" href="{{ "admin/pages" | append: next_page | relative_link }}">
+                Next &raquo;
+              </a>
             </p>
           {% endif %}
         </div>
       </div>
     {% endif %}
+  {% else %}
+    <p class="text-muted fst-italic text-center">This web log has no pages</p>
+  {% endif %}
 </article>

src/admin-theme/post-edit.liquid

@@ -6,41 +6,9 @@
     <div class="container">
       <div class="row mb-3">
         <div class="col-12 col-lg-9">
-          <div class="form-floating pb-3">
-            <input type="text" name="Title" id="title" class="form-control" placeholder="Title" autofocus required
-                   value="{{ model.title }}">
-            <label for="title">Title</label>
-          </div>
-          <div class="form-floating pb-3">
-            <input type="text" name="Permalink" id="permalink" class="form-control" placeholder="Permalink" required
-                   value="{{ model.permalink }}">
-            <label for="permalink">Permalink</label>
-            {%- unless model.is_new %}
-              <span class="form-text">
-                <a href="{{ "admin/post/" | append: model.post_id | append: "/permalinks" | relative_link }}">
-                  Manage Permalinks
-                </a>
-                <span class="text-muted"> &bull; </span>
-                <a href="{{ "admin/post/" | append: model.post_id | append: "/revisions" | relative_link }}">
-                  Manage Revisions
-                </a>
-              </span>
-            {% endunless -%}
-          </div>
-          <div class="mb-2">
-            <label for="text">Text</label> &nbsp; &nbsp;
-            <div class="btn-group btn-group-sm" role="group" aria-label="Text format button group">
-              <input type="radio" name="Source" id="source_html" class="btn-check" value="HTML"
-              {%- if model.source == "HTML" %} checked="checked"{% endif %}>
-              <label class="btn btn-sm btn-outline-secondary" for="source_html">HTML</label>
-              <input type="radio" name="Source" id="source_md" class="btn-check" value="Markdown"
-              {%- if model.source == "Markdown" %} checked="checked"{% endif %}>
-              <label class="btn btn-sm btn-outline-secondary" for="source_md">Markdown</label>
-            </div>
-          </div>
-          <div class="pb-3">
-            <textarea name="Text" id="text" class="form-control" rows="20">{{ model.text }}</textarea>
-          </div>
+          {%- assign entity = "post" -%}
+          {%- assign entity_id = model.post_id -%}
+          {% include_template "_edit-common" %}
           <div class="form-floating pb-3">
             <input type="text" name="Tags" id="tags" class="form-control" placeholder="Tags"
                    value="{{ model.tags }}">
@@ -61,7 +29,7 @@
                 <small>
                   <input type="checkbox" name="IsEpisode" id="isEpisode" class="form-check-input" value="true"
                          data-bs-toggle="collapse" data-bs-target="#episodeItems" onclick="Admin.toggleEpisodeFields()"
-                         {%- if model.is_episode %}checked="checked"{% endif %}>
+                         {%- if model.is_episode %} checked="checked"{% endif %}>
                 </small>
                 <label for="isEpisode">Podcast Episode</label>
               </span>
@@ -344,3 +312,4 @@
     </div>
   </form>
 </article>
+<script>window.setTimeout(() => Admin.toggleEpisodeFields(), 500)</script>

src/admin-theme/post-list.liquid

@@ -1,9 +1,10 @@
 <h2 class="my-3">{{ page_title }}</h2>
 <article>
   <a href="{{ "admin/post/new/edit" | relative_link }}" class="btn btn-primary btn-sm mb-3">Write a New Post</a>
+  {%- assign post_count = model.posts | size -%}
+  {%- if post_count > 0 %}
     <form method="post" class="container" hx-target="body">
       <input type="hidden" name="{{ csrf.form_field_name }}" value="{{ csrf.request_token }}">
-    {%- assign post_count = model.posts | size -%}
       {%- assign date_col   = "col-xs-12 col-md-3 col-lg-2" -%}
       {%- assign title_col  = "col-xs-12 col-md-7 col-lg-6 col-xl-5 col-xxl-4" -%}
       {%- assign author_col = "col-xs-12 col-md-2 col-lg-1" -%}
@@ -16,7 +17,6 @@
         <div class="{{ author_col }} d-none d-md-inline-block">Author</div>
         <div class="{{ tag_col }}">Tags</div>
       </div>
-    {%- if post_count > 0 %}
       {% for post in model.posts -%}
         <div class="row mwl-table-detail">
           <div class="{{ date_col }} no-wrap">
@@ -77,24 +77,22 @@
           </div>
         </div>
       {%- endfor %}
-    {% else %}
-      <div class="row">
-        <div class="col text-muted fst-italic text-center">This web log has no posts</div>
-      </div>
-    {% endif %}
     </form>
     {% if model.newer_link or model.older_link %}
-    <div class="d-flex justify-content-evenly">
+      <div class="d-flex justify-content-evenly mb-3">
         <div>
           {% if model.newer_link %}
-          <p><a class="btn btn-default" href="{{ model.newer_link.value }}">&laquo; Newer Posts</a></p>
+            <p><a class="btn btn-secondary" href="{{ model.newer_link.value }}">&laquo; Newer Posts</a></p>
           {% endif %}
         </div>
         <div class="text-right">
           {% if model.older_link %}
-          <p><a class="btn btn-default" href="{{ model.older_link.value }}">Older Posts &raquo;</a></p>
+            <p><a class="btn btn-secondary" href="{{ model.older_link.value }}">Older Posts &raquo;</a></p>
           {% endif %}
         </div>
       </div>
     {% endif %}
+  {% else %}
+    <p class="text-muted fst-italic text-center">This web log has no posts</p>
+  {% endif %}
 </article>

src/admin-theme/rss-settings.liquid

@@ -1,112 +0,0 @@
-<h2 class="my-3">{{ page_title }}</h2>
-<article>
-  <form action="{{ "admin/settings/rss" | relative_link }}" method="post">
-    <input type="hidden" name="{{ csrf.form_field_name }}" value="{{ csrf.request_token }}">
-    <div class="container">
-      <div class="row pb-3">
-        <div class="col col-xl-8 offset-xl-2">
-          <fieldset class="d-flex justify-content-evenly flex-row">
-            <legend>Feeds Enabled</legend>
-            <div class="form-check form-switch pb-2">
-              <input type="checkbox" name="IsFeedEnabled" id="feedEnabled" class="form-check-input" value="true"
-                     {%- if model.is_feed_enabled %} checked="checked"{% endif %}>
-              <label for="feedEnabled" class="form-check-label">All Posts</label>
-            </div>
-            <div class="form-check form-switch pb-2">
-              <input type="checkbox" name="IsCategoryEnabled" id="categoryEnabled" class="form-check-input" value="true"
-                     {%- if model.is_category_enabled %} checked="checked"{% endif %}>
-              <label for="categoryEnabled" class="form-check-label">Posts by Category</label>
-            </div>
-            <div class="form-check form-switch pb-2">
-              <input type="checkbox" name="IsTagEnabled" id="tagEnabled" class="form-check-input" value="true"
-                     {%- if model.tag_enabled %} checked="checked"{% endif %}>
-              <label for="tagEnabled" class="form-check-label">Posts by Tag</label>
-            </div>
-          </fieldset>
-        </div>
-      </div>
-      <div class="row">
-        <div class="col-12 col-sm-6 col-md-3 col-xl-2 offset-xl-2 pb-3">
-          <div class="form-floating">
-            <input type="text" name="FeedName" id="feedName" class="form-control" placeholder="Feed File Name"
-                   value="{{ model.feed_name }}">
-            <label for="feedName">Feed File Name</label>
-            <span class="form-text">Default is <code>feed.xml</code></span>
-          </div>
-        </div>
-        <div class="col-12 col-sm-6 col-md-4 col-xl-2 pb-3">
-          <div class="form-floating">
-            <input type="number" name="ItemsInFeed" id="itemsInFeed" class="form-control" min="0"
-                   placeholder="Items in Feed" required value="{{ model.items_in_feed }}">
-            <label for="itemsInFeed">Items in Feed</label>
-            <span class="form-text">Set to &ldquo;0&rdquo; to use &ldquo;Posts per Page&rdquo; setting ({{ web_log.posts_per_page }})</span>
-          </div>
-        </div>
-        <div class="col-12 col-md-5 col-xl-4 pb-3">
-          <div class="form-floating">
-            <input type="text" name="Copyright" id="copyright" class="form-control" placeholder="Copyright String"
-                   value="{{ model.copyright }}">
-            <label for="copyright">Copyright String</label>
-            <span class="form-text">
-              Can be a
-              <a href="https://creativecommons.org/share-your-work/" target="_blank" rel="noopener">
-                Creative Commons license string
-              </a>
-            </span>
-          </div>
-        </div>
-      </div>
-      <div class="row pb-3">
-        <div class="col text-center">
-          <button type="submit" class="btn btn-primary">Save Changes</button>
-        </div>
-      </div>
-    </div>
-  </form>
-  <h3>Custom Feeds</h3>
-  <a class="btn btn-sm btn-secondary" href="{{ 'admin/settings/rss/new/edit' | relative_link }}">
-    Add a New Custom Feed
-  </a>
-  <form method="post" class="container" hx-target="body">
-    {%- assign source_col = "col-12 col-md-6" -%}
-    {%- assign path_col   = "col-12 col-md-6" -%}
-    <input type="hidden" name="{{ csrf.form_field_name }}" value="{{ csrf.request_token }}">
-    <div class="row mwl-table-heading">
-      <div class="{{ source_col }}">
-        <span class="d-md-none">Feed</span><span class="d-none d-md-inline">Source</span>
-      </div>
-      <div class="{{ path_col }} d-none d-md-inline-block">Relative Path</div>
-    </div>
-    {%- assign feed_count = custom_feeds | size -%}
-    {% if feed_count > 0 %}
-      {% for feed in custom_feeds %}
-        <div class="row mwl-table-detail">
-          <div class="{{ source_col }}">
-            {{ feed.source }}
-            {%- if feed.is_podcast %} &nbsp; <span class="badge bg-primary">PODCAST</span>{% endif %}<br>
-            <small>
-              {%- assign feed_url = "admin/settings/rss/" | append: feed.id -%}
-              <a href="{{ feed.path | relative_link }}" target="_blank">View Feed</a>
-              <span class="text-muted"> &bull; </span>
-              <a href="{{ feed_url | append: "/edit" | relative_link }}">Edit</a>
-              <span class="text-muted"> &bull; </span>
-              {%- assign feed_del_link = feed_url | append: "/delete" | relative_link -%}
-              <a href="{{ feed_del_link }}" hx-post="{{ feed_del_link }}" class="text-danger"
-                 hx-confirm="Are you sure you want to delete the custom RSS feed based on {{ feed.source | strip_html | escape }}? This action cannot be undone.">
-                Delete
-              </a>
-            </small>
-          </div>
-          <div class="{{ path_col }}">
-            <small class="d-md-none">Served at {{ feed.path }}</small>
-            <span class="d-none d-md-inline">{{ feed.path }}</span>
-          </div>
-        </div>
-      {% endfor %}
-    {% else %}
-      <tr>
-        <td colspan="3" class="text-muted fst-italic text-center">No custom feeds defined</td>
-      </tr>
-    {% endif %}
-  </form>
-</article>

src/admin-theme/settings.liquid

@@ -1,9 +1,11 @@
 <h2 class="my-3">{{ web_log.name }} Settings</h2>
-<p class="text-muted">
-  Other Settings: <a href="{{ "admin/settings/tag-mappings" | relative_link }}">Tag Mappings</a> &bull;
-  <a href="{{ "admin/settings/rss" | relative_link }}">RSS Settings</a>
-</p>
 <article>
+  <p class="text-muted">
+    Go to: <a href="#users">Users</a> &bull; <a href="#rss-settings">RSS Settings</a> &bull;
+    <a href="#tag-mappings">Tag Mappings</a>
+  </p>
+  <fieldset class="container mb-3">
+    <legend>Web Log Settings</legend>
     <form action="{{ "admin/settings" | relative_link }}" method="post">
       <input type="hidden" name="{{ csrf.form_field_name }}" value="{{ csrf.request_token }}">
       <div class="container">
@@ -21,7 +23,8 @@
                      value="{{ model.slug }}">
               <label for="slug">Slug</label>
               <span class="form-text">
-              <span class="badge rounded-pill bg-warning text-dark">WARNING</span> changing this value may break links
+                <span class="badge rounded-pill bg-warning text-dark">WARNING</span> changing this value may break
+                links
                 (<a href="https://bitbadger.solutions/open-source/myweblog/configuring.html#blog-settings"
                     target="_blank">more</a>)
               </span>
@@ -49,9 +52,8 @@
           <div class="col-12 col-md-6 offset-md-1 col-xl-4 offset-xl-0 pb-3">
             <div class="form-floating">
               <select name="DefaultPage" id="defaultPage" class="form-control" required>
-              {% for pg in pages -%}
-                <option value="{{ pg[0] }}"
-                {%- if pg[0] == model.default_page  %} selected="selected"{% endif %}>
+                {%- for pg in pages %}
+                  <option value="{{ pg[0] }}"{% if pg[0] == model.default_page  %} selected="selected"{% endif %}>
                     {{ pg[1] }}
                   </option>
                 {%- endfor %}
@@ -103,4 +105,142 @@
         </div>
       </div>
     </form>
+  </fieldset>
+  <fieldset id="users" class="container mb-3 pb-0">
+    <legend>Users</legend>
+    {% include_template "_user-list-columns" %}
+    <a href="{{ "admin/settings/user/new/edit" | relative_link }}" class="btn btn-primary btn-sm mb-3"
+       hx-target="#user_new">
+      Add a New User
+    </a>
+    <div class="container g-0">
+      <div class="row mwl-table-heading">
+        <div class="{{ user_col }}">User<span class="d-md-none">; Full Name / E-mail; Last Log On</span></div>
+        <div class="{{ email_col }} d-none d-md-inline-block">Full Name / E-mail</div>
+        <div class="{{ cre8_col }}">Created</div>
+        <div class="{{ last_col }} d-none d-md-block">Last Log On</div>
+      </div>
+    </div>
+    {{ user_list }}
+  </fieldset>
+  <fieldset id="rss-settings" class="container mb-3 pb-0">
+    <legend>RSS Settings</legend>
+    <form action="{{ "admin/settings/rss" | relative_link }}" method="post">
+      <input type="hidden" name="{{ csrf.form_field_name }}" value="{{ csrf.request_token }}">
+      <div class="container">
+        <div class="row pb-3">
+          <div class="col col-xl-8 offset-xl-2">
+            <fieldset class="d-flex justify-content-evenly flex-row">
+              <legend>Feeds Enabled</legend>
+              <div class="form-check form-switch pb-2">
+                <input type="checkbox" name="IsFeedEnabled" id="feedEnabled" class="form-check-input" value="true"
+                       {%- if rss_model.is_feed_enabled %} checked="checked"{% endif %}>
+                <label for="feedEnabled" class="form-check-label">All Posts</label>
+              </div>
+              <div class="form-check form-switch pb-2">
+                <input type="checkbox" name="IsCategoryEnabled" id="categoryEnabled" class="form-check-input"
+                       value="true" {%- if rss_model.is_category_enabled %} checked="checked"{% endif %}>
+                <label for="categoryEnabled" class="form-check-label">Posts by Category</label>
+              </div>
+              <div class="form-check form-switch pb-2">
+                <input type="checkbox" name="IsTagEnabled" id="tagEnabled" class="form-check-input" value="true"
+                       {%- if rss_model.tag_enabled %} checked="checked"{% endif %}>
+                <label for="tagEnabled" class="form-check-label">Posts by Tag</label>
+              </div>
+            </fieldset>
+          </div>
+        </div>
+        <div class="row">
+          <div class="col-12 col-sm-6 col-md-3 col-xl-2 offset-xl-2 pb-3">
+            <div class="form-floating">
+              <input type="text" name="FeedName" id="feedName" class="form-control" placeholder="Feed File Name"
+                     value="{{ rss_model.feed_name }}">
+              <label for="feedName">Feed File Name</label>
+              <span class="form-text">Default is <code>feed.xml</code></span>
+            </div>
+          </div>
+          <div class="col-12 col-sm-6 col-md-4 col-xl-2 pb-3">
+            <div class="form-floating">
+              <input type="number" name="ItemsInFeed" id="itemsInFeed" class="form-control" min="0"
+                     placeholder="Items in Feed" required value="{{ rss_model.items_in_feed }}">
+              <label for="itemsInFeed">Items in Feed</label>
+              <span class="form-text">Set to &ldquo;0&rdquo; to use &ldquo;Posts per Page&rdquo; setting ({{ web_log.posts_per_page }})</span>
+            </div>
+          </div>
+          <div class="col-12 col-md-5 col-xl-4 pb-3">
+            <div class="form-floating">
+              <input type="text" name="Copyright" id="copyright" class="form-control" placeholder="Copyright String"
+                     value="{{ rss_model.copyright }}">
+              <label for="copyright">Copyright String</label>
+              <span class="form-text">
+          Can be a
+          <a href="https://creativecommons.org/share-your-work/" target="_blank" rel="noopener">
+            Creative Commons license string
+          </a>
+        </span>
+            </div>
+          </div>
+        </div>
+        <div class="row pb-3">
+          <div class="col text-center">
+            <button type="submit" class="btn btn-primary">Save Changes</button>
+          </div>
+        </div>
+      </div>
+    </form>
+    <fieldset class="container mb-3 pb-0">
+      <legend>Custom Feeds</legend>
+      <a class="btn btn-sm btn-secondary" href="{{ 'admin/settings/rss/new/edit' | relative_link }}">
+        Add a New Custom Feed
+      </a>
+      {%- assign feed_count = custom_feeds | size -%}
+      {%- if feed_count > 0 %}
+        <form method="post" class="container g-0" hx-target="body">
+          {%- assign source_col = "col-12 col-md-6" -%}
+          {%- assign path_col   = "col-12 col-md-6" -%}
+          <input type="hidden" name="{{ csrf.form_field_name }}" value="{{ csrf.request_token }}">
+          <div class="row mwl-table-heading">
+            <div class="{{ source_col }}">
+              <span class="d-md-none">Feed</span><span class="d-none d-md-inline">Source</span>
+            </div>
+            <div class="{{ path_col }} d-none d-md-inline-block">Relative Path</div>
+          </div>
+          {% for feed in custom_feeds %}
+            <div class="row mwl-table-detail">
+              <div class="{{ source_col }}">
+                {{ feed.source }}
+                {%- if feed.is_podcast %} &nbsp; <span class="badge bg-primary">PODCAST</span>{% endif %}<br>
+                <small>
+                  {%- assign feed_url = "admin/settings/rss/" | append: feed.id -%}
+                  <a href="{{ feed.path | relative_link }}" target="_blank">View Feed</a>
+                  <span class="text-muted"> &bull; </span>
+                  <a href="{{ feed_url | append: "/edit" | relative_link }}">Edit</a>
+                  <span class="text-muted"> &bull; </span>
+                  {%- assign feed_del_link = feed_url | append: "/delete" | relative_link -%}
+                  <a href="{{ feed_del_link }}" hx-post="{{ feed_del_link }}" class="text-danger"
+                     hx-confirm="Are you sure you want to delete the custom RSS feed based on {{ feed.source | strip_html | escape }}? This action cannot be undone.">
+                    Delete
+                  </a>
+                </small>
+              </div>
+              <div class="{{ path_col }}">
+                <small class="d-md-none">Served at {{ feed.path }}</small>
+                <span class="d-none d-md-inline">{{ feed.path }}</span>
+              </div>
+            </div>
+          {%- endfor %}
+        </form>
+      {%- else %}
+        <p class="text-muted fst-italic text-center">No custom feeds defined</p>
+      {%- endif %}
+    </fieldset>
+  </fieldset>
+  <fieldset id="tag-mappings" class="container mb-3 pb-0">
+    <legend>Tag Mappings</legend>
+    <a href="{{ "admin/settings/tag-mapping/new/edit" | relative_link }}" class="btn btn-primary btn-sm mb-3"
+       hx-target="#tag_new">
+      Add a New Tag Mapping
+    </a>
+    {{ tag_mapping_list }}
+  </fieldset>
 </article>

src/admin-theme/tag-mapping-edit.liquid

@@ -22,7 +22,7 @@
   <div class="row mb-3">
     <div class="col text-center">
       <button type="submit" class="btn btn-sm btn-primary">Save Changes</button>
-      <a href="{{ "admin/settings/tag-mappings/bare" | relative_link }}" class="btn btn-sm btn-secondary ms-3">
+      <a href="{{ "admin/settings/tag-mappings" | relative_link }}" class="btn btn-sm btn-secondary ms-3">
         Cancel
       </a>
     </div>

src/admin-theme/tag-mapping-list-body.liquid

@@ -1,8 +1,17 @@
-<form method="post" class="container" id="tagList" hx-target="this" hx-swap="outerHTML show:window:top">
-  <input type="hidden" name="{{ csrf.form_field_name }}" value="{{ csrf.request_token }}">
-  <div class="row mwl-table-detail" id="tag_new"></div>
+<div id="tagList" class="container">
+  <div class="row">
+    <div class="col">
       {%- assign map_count = mappings | size -%}
       {% if map_count > 0 -%}
+        <div class="container">
+          <div class="row mwl-table-heading">
+            <div class="col">Tag</div>
+            <div class="col">URL Value</div>
+          </div>
+        </div>
+        <form method="post" class="container" hx-target="#tagList" hx-swap="outerHTML">
+          <input type="hidden" name="{{ csrf.form_field_name }}" value="{{ csrf.request_token }}">
+          <div class="row mwl-table-detail" id="tag_new"></div>
             {% for map in mappings -%}
               {%- assign map_id = mapping_ids | value: map.tag -%}
               <div class="row mwl-table-detail" id="tag_{{ map_id }}">
@@ -25,9 +34,12 @@
                 <div class="col">{{ map.url_value }}</div>
               </div>
             {%- endfor %}
+        </form>
       {%- else -%}
-    <div class="row">
-      <div class="col text-muted text-center fst-italic">This web log has no tag mappings</div>
+        <div id="tag_new">
+          <p class="text-muted text-center fst-italic">This web log has no tag mappings</p>
         </div>
       {%- endif %}
-</form>
+    </div>
+  </div>
+</div>

src/admin-theme/tag-mapping-list.liquid

@@ -1,14 +0,0 @@
-<h2 class="my-3">{{ page_title }}</h2>
-<article>
-  <a href="{{ "admin/settings/tag-mapping/new/edit" | relative_link }}" class="btn btn-primary btn-sm mb-3"
-     hx-target="#tag_new">
-    Add a New Tag Mapping
-  </a>
-  <div class="container">
-    <div class="row mwl-table-heading">
-      <div class="col">Tag</div>
-      <div class="col">URL Value</div>
-    </div>
-  </div>
-  {{ tag_mapping_list }}
-</article>

src/admin-theme/theme-list-body.liquid

@@ -0,0 +1,33 @@
+<form method="post" id="themeList" class="container g-0" hx-target="this" hx-swap="outerHTML show:window:top">
+  <input type="hidden" name="{{ csrf.form_field_name }}" value="{{ csrf.request_token }}">
+  {% include_template "_theme-list-columns" %}
+  {% for theme in themes -%}
+    <div class="row mwl-table-detail" id="theme_{{ theme.id }}">
+      <div class="{{ theme_col }} no-wrap">
+        {{ theme.name }}
+        {%- if theme.is_in_use %}
+          <span class="badge bg-primary ms-2">IN USE</span>
+        {%- endif %}
+        {%- unless theme.is_on_disk %}
+          <span class="badge bg-warning text-dark ms-2">NOT ON DISK</span>
+        {%- endunless %}<br>
+        <small>
+          <span class="text-muted">v{{ theme.version }}</span>
+          {% unless theme.is_in_use or theme.id == "default" %}
+            <span class="text-muted"> &bull; </span>
+            {%- assign theme_del_link = "admin/theme/" | append: theme.id | append: "/delete" | relative_link -%}
+            <a href="{{ theme_del_link }}" hx-post="{{ theme_del_link }}" class="text-danger"
+               hx-confirm="Are you sure you want to delete the theme &ldquo;{{ theme.name }}&rdquo;? This action cannot be undone.">
+              Delete
+            </a>
+          {% endunless %}
+          <span class="d-md-none text-muted">
+            <br>Slug: {{ theme.id }} &bull; {{ theme.template_count }} Templates
+          </span>
+        </small>
+      </div>
+      <div class="{{ slug_col }}">{{ theme.id }}</div>
+      <div class="{{ tmpl_col }}">{{ theme.template_count }}</div>
+    </div>
+  {%- endfor %}
+</form>

src/admin-theme/theme-upload.liquid

@@ -0,0 +1,30 @@
+<div class="col">
+  <h5 class="mt-2">{{ page_title }}</h5>
+  <form action="{{ "admin/theme/new" | relative_link }}" method="post" class="container" enctype="multipart/form-data"
+        hx-boost="false">
+    <input type="hidden" name="{{ csrf.form_field_name }}" value="{{ csrf.request_token }}">
+    <div class="row">
+      <div class="col-12 col-sm-6 pb-3">
+        <div class="form-floating">
+          <input type="file" id="file" name="file" class="form-control" accept=".zip" placeholder="Theme File" required>
+          <label for="file">Theme File</label>
+        </div>
+      </div>
+      <div class="col-12 col-sm-6 pb-3 d-flex justify-content-center align-items-center">
+        <div class="form-check form-switch pb-2">
+          <input type="checkbox" name="DoOverwrite" id="doOverwrite" class="form-check-input" value="true">
+          <label for="doOverwrite" class="form-check-label">Overwrite</label>
+        </div>
+      </div>
+    </div>
+    <div class="row pb-3">
+      <div class="col text-center">
+        <button type="submit" class="btn btn-sm btn-primary">Upload Theme</button>
+        <button type="button" class="btn btn-sm btn-secondary ms-3"
+                onclick="document.getElementById('theme_new').innerHTML = ''">
+          Cancel
+        </button>
+      </div>
+    </div>
+  </form>
+</div>

src/admin-theme/upload-list.liquid

@@ -7,20 +7,20 @@
   <form method="post" class="container" hx-target="body">
     <input type="hidden" name="{{ csrf.form_field_name }}" value="{{ csrf.request_token }}">
     <div class="row">
-      <div class="col text-muted text-center"><em>Uploaded files served from</em><br>{{ upload_base }}</div>
+      <div class="col text-center"><em class="text-muted">Uploaded files served from</em><br>{{ upload_base }}</div>
     </div>
+    {%- assign file_count = files | size -%}
+    {%- if file_count > 0 %}
       <div class="row mwl-table-heading">
         <div class="col-6">File Name</div>
         <div class="col-3">Path</div>
         <div class="col-3">File Date/Time</div>
       </div>
-    {%- assign file_count = files | size -%}
-    {%- if file_count > 0 %}
       {% for file in files %}
         <div class="row mwl-table-detail">
           <div class="col-6">
             {%- capture badge_class -%}
-              {%- if file.source == "disk" %}secondary{% else %}primary{% endif -%}
+              {%- if file.source == "Disk" %}secondary{% else %}primary{% endif -%}
             {%- endcapture -%}
             {%- assign path_and_name = file.path | append: file.name -%}
             {%- assign blog_rel = upload_path | append: path_and_name -%}
@@ -49,7 +49,7 @@
               {% if is_web_log_admin %}
                 <span class="text-muted"> &bull; </span>
                 {%- capture delete_url -%}
-                  {%- if file.source == "disk" -%}
+                  {%- if file.source == "Disk" -%}
                     admin/upload/delete/{{ path_and_name }}
                   {%- else -%}
                     admin/upload/{{ file.id }}/delete
@@ -69,7 +69,7 @@
       {% endfor %}
     {%- else -%}
       <div class="row">
-        <div class="col text-muted fst-italic text-center">This web log has uploaded files</div>
+        <div class="col text-muted fst-italic text-center"><br>This web log has uploaded files</div>
       </div>
     {%- endif %}
   </form>

src/admin-theme/upload-new.liquid

@@ -13,11 +13,11 @@
       <div class="col-12 col-md-6 pb-3 d-flex align-self-center justify-content-around">
         Destination<br>
         <div class="btn-group" role="group" aria-label="Upload destination button group">
-          <input type="radio" name="Destination" id="destination_db" class="btn-check" value="database"
-          {%- if destination == "database" %} checked="checked"{% endif %}>
+          <input type="radio" name="Destination" id="destination_db" class="btn-check" value="Database"
+                 {%- if destination == "Database" %} checked="checked"{% endif %}>
           <label class="btn btn-outline-primary" for="destination_db">Database</label>
-          <input type="radio" name="Destination" id="destination_disk" class="btn-check" value="disk"
-          {%- if destination == "disk" %} checked="checked"{% endif %}>
+          <input type="radio" name="Destination" id="destination_disk" class="btn-check" value="Disk"
+                 {%- if destination == "Disk" %} checked="checked"{% endif %}>
           <label class="btn btn-outline-secondary" for="destination_disk">Disk</label>
         </div>
       </div>

src/admin-theme/upload-theme.liquid

@@ -1,26 +0,0 @@
-<h2>Upload a Theme</h2>
-<article>
-  <form action="{{ "admin/theme/update" | relative_link }}"
-        method="post" class="container" enctype="multipart/form-data" hx-boost="false">
-    <input type="hidden" name="{{ csrf.form_field_name }}" value="{{ csrf.request_token }}">
-    <div class="row">
-      <div class="col-12 col-sm-6 offset-sm-3 pb-3">
-        <div class="form-floating">
-          <input type="file" id="file" name="file" class="form-control" accept=".zip" placeholder="Theme File" required>
-          <label for="file">Theme File</label>
-        </div>
-      </div>
-      <div class="col-12 col-sm-6 pb-3">
-        <div class="form-check form-switch pb-2">
-          <input type="checkbox" name="clean" id="clean" class="form-check-input" value="true">
-          <label for="clean" class="form-check-label">Delete Existing Theme Files</label>
-        </div>
-      </div>
-    </div>
-    <div class="row pb-3">
-      <div class="col text-center">
-        <button type="submit" class="btn btn-primary">Upload Theme</button>
-      </div>
-    </div>
-  </form>
-</article>

src/admin-theme/user-edit.liquid

@@ -1,13 +1,13 @@
 <div class="col-12">
   <h5 class="my-3">{{ page_title }}</h5>
-  <form hx-post="{{ "admin/user/save" | relative_link }}" method="post" class="container"
+  <form hx-post="{{ "admin/settings/user/save" | relative_link }}" method="post" class="container"
         hx-target="#userList" hx-swap="outerHTML show:window:top">
     <input type="hidden" name="{{ csrf.form_field_name }}" value="{{ csrf.request_token }}">
     <input type="hidden" name="Id" value="{{ model.id }}">
     <div class="row">
       <div class="col-12 col-md-5 col-lg-3 col-xxl-2 offset-xxl-1 mb-3">
         <div class="form-floating">
-          <select name="AccessLevel" id="accessLevel" class="form-control" required>
+          <select name="AccessLevel" id="accessLevel" class="form-control" required autofocus>
             {%- for level in access_levels %}
               <option value="{{ level[0] }}"{% if model.access_level == level[0] %} selected{% endif %}>
                 {{ level[1] }}
@@ -88,7 +88,14 @@
     <div class="row mb-3">
       <div class="col text-center">
         <button type="submit" class="btn btn-sm btn-primary">Save Changes</button>
-        <a href="{{ "admin/users/bare" | relative_link }}" class="btn btn-sm btn-secondary ms-3">Cancel</a>
+        {% if model.is_new %}
+          <button type="button" class="btn btn-sm btn-secondary ms-3"
+                  onclick="document.getElementById('user_new').innerHTML = ''">
+            Cancel
+          </button>
+        {% else %}
+          <a href="{{ "admin/settings/users" | relative_link }}" class="btn btn-sm btn-secondary ms-3">Cancel</a>
+        {% endif %}
       </div>
     </div>
   </form>

src/admin-theme/user-list-body.liquid

@@ -1,10 +1,10 @@
-<form method="post" id="userList" class="container" hx-target="this" hx-swap="outerHTML show:window:top">
-  <input type="hidden" name="{{ csrf.form_field_name }}" value="{{ csrf.request_token }}">
+<div id="userList">
+  <div class="container g-0">
     <div class="row mwl-table-detail" id="user_new"></div>
-  {%- assign user_col  = "col-12 col-md-4 col-xl-3" -%}
-  {%- assign email_col = "col-12 col-md-4 col-xl-4" -%}
-  {%- assign cre8_col  = "d-none d-xl-block col-xl-2" -%}
-  {%- assign last_col  = "col-12 col-md-4 col-xl-3" -%}
+  </div>
+  <form method="post" id="userList" class="container g-0" hx-target="this" hx-swap="outerHTML show:window:top">
+    <input type="hidden" name="{{ csrf.form_field_name }}" value="{{ csrf.request_token }}">
+    {% include_template "_user-list-columns" %}
     {%- assign badge = "ms-2 badge bg" -%}
     {% for user in users -%}
       <div class="row mwl-table-detail" id="user_{{ user.id }}">
@@ -21,7 +21,7 @@
           {%- endif %}<br>
           {%- unless is_administrator == false and user.access_level == "Administrator" %}
             <small>
-            {%- assign user_url_base = "admin/user/" | append: user.id -%}
+              {%- assign user_url_base = "admin/settings/user/" | append: user.id -%}
               <a href="{{ user_url_base | append: "/edit" | relative_link }}" hx-target="#user_{{ user.id }}"
                  hx-swap="innerHTML show:#user_{{ user.id }}:top">
                 Edit
@@ -57,4 +57,5 @@
         </div>
       </div>
     {%- endfor %}
-</form>
+  </form>
+</div>

src/admin-theme/user-list.liquid

@@ -1,20 +0,0 @@
-<h2 class="my-3">{{ page_title }}</h2>
-<article>
-  <a href="{{ "admin/user/new/edit" | relative_link }}" class="btn btn-primary btn-sm mb-3"
-     hx-target="#user_new">
-    Add a New User
-  </a>
-  <div class="container">
-    {%- assign user_col  = "col-12 col-md-4 col-xl-3" -%}
-    {%- assign email_col = "col-12 col-md-4 col-xl-4" -%}
-    {%- assign cre8_col  = "d-none d-xl-block col-xl-2" -%}
-    {%- assign last_col  = "col-12 col-md-4 col-xl-3" -%}
-    <div class="row mwl-table-heading">
-      <div class="{{ user_col }}">User<span class="d-md-none">; Details; Last Log On</span></div>
-      <div class="{{ email_col }} d-none d-md-inline-block">Details</div>
-      <div class="{{ cre8_col }}">Created</div>
-      <div class="{{ last_col }} d-none d-md-block">Last Log On</div>
-    </div>
-  </div>
-  {{ user_list }}
-</article>

src/admin-theme/version.txt

@@ -1,2 +1,2 @@
 myWebLog Admin
-2.0.0-beta05
+2.0.0-rc2

src/admin-theme/wwwroot/admin.css

@@ -29,7 +29,6 @@ header nav {
 footer {
   background-color: #808080;
   border-top: solid 1px black;
-  color: white;
 }
 .messages {
   max-width: 60rem;
@@ -92,3 +91,27 @@ a.text-danger:link:hover, a.text-danger:visited:hover {
   border-radius: .5rem;
   padding: .5rem;
 }
+.load-overlay {
+  display: none;
+  position: fixed;
+  top: 55px;
+  left: 0;
+  z-index: 100;
+  width: 100%;
+  height: 100%;
+  background-color: rgba(0, 0, 0, .1);
+  transition: ease-in-out .5s;
+}
+.load-overlay h1 {
+  background-color: rgba(204, 204, 0, .95);
+  height: fit-content;
+  border: solid 6px darkgreen;
+  border-radius: 2rem;
+}
+.load-overlay.htmx-request {
+  display: flex;
+  flex-flow: row;
+}
+#toastHost {
+  z-index: 5;
+}

src/admin-theme/wwwroot/admin.js

@@ -293,33 +293,46 @@ this.Admin = {
       const parts = msg.split("|||")
       if (parts.length < 2) return
       
-      const msgDiv = document.createElement("div")
-      msgDiv.className = `alert alert-${parts[0]} alert-dismissible fade show`
-      msgDiv.setAttribute("role", "alert")
-      msgDiv.innerHTML = parts[1]
+      // Create the toast header
+      const toastType = document.createElement("strong")
+      toastType.className = "me-auto text-uppercase"
+      toastType.innerText = parts[0] === "danger" ? "error" : parts[0]
       
       const closeBtn = document.createElement("button")
       closeBtn.type = "button"
       closeBtn.className = "btn-close"
-      closeBtn.setAttribute("data-bs-dismiss", "alert")
+      closeBtn.setAttribute("data-bs-dismiss", "toast")
       closeBtn.setAttribute("aria-label", "Close")
-      msgDiv.appendChild(closeBtn)
 
+      const toastHead = document.createElement("div")
+      toastHead.className = `toast-header bg-${parts[0]}${parts[0] === "warning" ? "" : " text-white"}`
+      toastHead.appendChild(toastType)
+      toastHead.appendChild(closeBtn)
+
+      // Create the toast body
+      const toastBody = document.createElement("div")
+      toastBody.className = `toast-body bg-${parts[0]} bg-opacity-25`
+      toastBody.innerHTML = parts[1]
       if (parts.length === 3) {
-        msgDiv.innerHTML += `<hr>${parts[2]}`
+        toastBody.innerHTML += `<hr>${parts[2]}`
       }
-      document.getElementById("msgContainer").appendChild(msgDiv)
-    })
-  },
       
-  /**
-   * Set all "success" alerts to close after 4 seconds
-   */
-  dismissSuccesses() {
-    [...document.querySelectorAll(".alert-success")].forEach(alert => {
-      setTimeout(() => {
-        (bootstrap.Alert.getInstance(alert) ?? new bootstrap.Alert(alert)).close()
-      }, 4000)
+      // Assemble the toast
+      const toast = document.createElement("div")
+      toast.className = "toast"
+      toast.setAttribute("role", "alert")
+      toast.setAttribute("aria-live", "assertive")
+      toast.setAttribute("aria-atomic", "true")
+      toast.appendChild(toastHead)
+      toast.appendChild(toastBody)
+
+      document.getElementById("toasts").appendChild(toast)
+      
+      let options = { delay: 4000 }
+      if (parts[0] !== "success") options.autohide = false
+      
+      const theToast = new bootstrap.Toast(toast, options)
+      theToast.show()
     })
   }
 }
@@ -329,8 +342,19 @@ htmx.on("htmx:afterOnLoad", function (evt) {
   // Show messages if there were any in the response
   if (hdrs.indexOf("x-message") >= 0) {
     Admin.showMessage(evt.detail.xhr.getResponseHeader("x-message"))
-    Admin.dismissSuccesses()
   }
+  // Initialize any toasts that were pre-rendered from the server
+  [...document.querySelectorAll(".toast")].forEach(el => {
+    if (el.getAttribute("data-mwl-shown") === "true" && el.className.indexOf("hide") >= 0) {
+      document.removeChild(el)
+    } else {
+      const toast = new bootstrap.Toast(el,
+          el.getAttribute("data-bs-autohide") === "false"
+              ? { autohide: false } : { delay: 6000, autohide: true })
+      toast.show()
+      el.setAttribute("data-mwl-shown", "true")
+    }
+  })
 })
 
 htmx.on("htmx:responseError", function (evt) {

src/default-theme/index.liquid

@@ -1,12 +1,11 @@
 {%- if is_category or is_tag %}
   <h1 class="index-title">{{ page_title }}</h1>
-  {%- if is_category %}
-    {%- assign cat = categories | where: "slug", slug | first -%}
-    {%- if cat.description %}<h4 class="text-muted">{{ cat.description.value }}</h4>{% endif -%}
-  {%- endif %}
-{%- endif %}
-<section class="container mt-3" aria-label="The posts for the page">
-  {% for post in model.posts %}
+  {%- if subtitle %}<h4 class="text-muted">{{ subtitle }}</h4>{% endif -%}
+{% endif %}
+{%- assign post_count = model.posts | size -%}
+{%- if post_count > 0 %}
+  <section class="container mt-3" aria-label="The posts for the page">
+    {%- for post in model.posts %}
       <article>
         <h1>
           <a href="{{ post | relative_link }}" title="Permanent link to &quot;{{ post.title | escape }}&quot;">
@@ -27,7 +26,7 @@
               {%- if category_count > 0 -%}
                 Categorized under:
                 {% for cat in post.category_ids -%}
-                {%- assign this_cat = categories | where: "id", cat | first -%}
+                  {%- assign this_cat = categories | where: "Id", cat | first -%}
                   {{ this_cat.name }}{% unless forloop.last %}, {% endunless %}
                   {%- assign cat_names = this_cat.name | concat: cat_names -%}
                 {%- endfor -%}
@@ -43,8 +42,8 @@
         <hr>
       </article>
     {% endfor %}
-</section>
-<nav aria-label="pagination">
+  </section>
+  <nav aria-label="pagination">
     <ul class="pagination justify-content-evenly mt-2">
       {% if model.newer_link -%}
         <li class="page-item"><a class="page-link" href="{{ model.newer_link.value }}">&laquo; Newer Posts</a></li>
@@ -53,4 +52,9 @@
         <li class="page-item"><a class="page-link" href="{{ model.older_link.value }}">Older Posts &raquo;</a></li>
       {%- endif -%}
     </ul>
-</nav>
+  </nav>
+{%- else %}
+  <article>
+    <p class="text-center mt-3">No posts found</p>
+  </article>
+{%- endif %}

src/default-theme/layout.liquid

@@ -3,8 +3,8 @@
   <head>
     <meta charset="utf-8">
     <meta name="viewport" content="width=device-width">
-    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/bootstrap.min.css"
-          integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">
+    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css"
+          integrity="sha384-1BmE4kWBq78iYhFldvKuhfTAU6auU8tT94WrHftjDbrCEXSU1oBoqyl2QvZ6jIW3" crossorigin="anonymous">
     <title>{{ page_title | strip_html }}{% if page_title %} &laquo; {% endif %}{{ web_log.name | strip_html }}</title>
     {% page_head -%}
   </head>
@@ -55,8 +55,8 @@
         <img src="{{ "themes/admin/logo-dark.png" | relative_link }}" alt="myWebLog" width="120" height="34">
       </div>
     </footer>
-    <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/js/bootstrap.bundle.min.js"
-            integrity="sha384-MrcW6ZMFYlzcLA8Nl+NtUVF0sA7MsXsP1UyJoMp4YLEuNSfAP+JcXn/tWtIaxVXM"
+    <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.bundle.min.js"
+            integrity="sha384-ka7Sk0Gln4gmtz2MlQnikT1wXgYsOg+OMhuP+IlRH9sENBO0LRn5q+8nbTov4+1p"
             crossorigin="anonymous"></script>
   </body>
 </html>

src/default-theme/single-post.liquid

@@ -20,7 +20,7 @@
       <h4 class="item-meta text-muted">
         Categorized under
         {% for cat_id in post.category_ids -%}
-          {% assign cat = categories | where: "id", cat_id | first %}
+          {% assign cat = categories | where: "Id", cat_id | first %}
           <span class="text-nowrap">
             <a href="{{ cat | category_link }}" title="Categorized under &ldquo;{{ cat.name | escape }}&rdquo;">
               {{ cat.name }}

src/default-theme/version.txt

@@ -1,2 +1,2 @@
 myWebLog Default Theme
-2.0.0-alpha36
+2.0.0-rc2