WIP on feeds / podcasts
This commit is contained in:
parent
1cd7b06add
commit
fbacacfb5b
|
|
@ -524,8 +524,7 @@ module Post =
|
|||
}
|
||||
|
||||
/// Find posts to be displayed on a category list page
|
||||
let findPageOfCategorizedPosts (webLogId : WebLogId) (catIds : CategoryId list) (pageNbr : int64) postsPerPage =
|
||||
let pg = int pageNbr
|
||||
let findPageOfCategorizedPosts (webLogId : WebLogId) (catIds : CategoryId list) pageNbr postsPerPage =
|
||||
rethink<Post list> {
|
||||
withTable Table.Post
|
||||
getAll (objList catIds) "categoryIds"
|
||||
|
|
@ -534,7 +533,7 @@ module Post =
|
|||
without [ "priorPermalinks"; "revisions" ]
|
||||
distinct
|
||||
orderByDescending "publishedOn"
|
||||
skip ((pg - 1) * postsPerPage)
|
||||
skip ((pageNbr - 1) * postsPerPage)
|
||||
limit (postsPerPage + 1)
|
||||
result; withRetryDefault
|
||||
}
|
||||
|
|
|
|||
|
|
@ -255,6 +255,9 @@ type PodcastOptions =
|
|||
/// The e-mail address of the user who registered the podcast at iTunes
|
||||
email : string
|
||||
|
||||
/// The link to the image for the podcast
|
||||
imageUrl : Permalink
|
||||
|
||||
/// The category from iTunes under which this podcast is categorized
|
||||
iTunesCategory : string
|
||||
|
||||
|
|
@ -263,6 +266,9 @@ type PodcastOptions =
|
|||
|
||||
/// The explictness rating (iTunes field)
|
||||
explicit : ExplicitRating
|
||||
|
||||
/// The default media type for files in this podcast
|
||||
defaultMediaType : string option
|
||||
}
|
||||
|
||||
|
||||
|
|
|
|||
257
src/MyWebLog/Handlers/Feed.fs
Normal file
257
src/MyWebLog/Handlers/Feed.fs
Normal file
|
|
@ -0,0 +1,257 @@
|
|||
/// Functions to support generating RSS feeds
|
||||
module MyWebLog.Handlers.Feed
|
||||
|
||||
open System
|
||||
open System.IO
|
||||
open System.ServiceModel.Syndication
|
||||
open System.Text.RegularExpressions
|
||||
open System.Xml
|
||||
open Giraffe
|
||||
open Microsoft.AspNetCore.Http
|
||||
open MyWebLog
|
||||
open MyWebLog.ViewModels
|
||||
|
||||
/// The type of feed to generate
|
||||
type FeedType =
|
||||
| StandardFeed
|
||||
| CategoryFeed of CategoryId
|
||||
| TagFeed of string
|
||||
| Custom of CustomFeed
|
||||
|
||||
/// Derive the type of RSS feed requested
|
||||
let deriveFeedType (ctx : HttpContext) feedPath : (FeedType * int) option =
|
||||
let webLog = ctx.WebLog
|
||||
let name = $"/{webLog.rss.feedName}"
|
||||
let postCount = defaultArg webLog.rss.itemsInFeed webLog.postsPerPage
|
||||
// Standard feed
|
||||
match webLog.rss.feedEnabled && feedPath = name with
|
||||
| true -> Some (StandardFeed, postCount)
|
||||
| false ->
|
||||
// Category feed
|
||||
match CategoryCache.get ctx |> Array.tryFind (fun cat -> cat.slug = feedPath.Replace (name, "")) with
|
||||
| Some cat -> Some (CategoryFeed (CategoryId cat.id), postCount)
|
||||
| None ->
|
||||
// Tag feed
|
||||
match feedPath.StartsWith "/tag/" with
|
||||
| true -> Some (TagFeed (feedPath.Replace("/tag/", "").Replace(name, "")), postCount)
|
||||
| false ->
|
||||
// Custom feed
|
||||
match webLog.rss.customFeeds
|
||||
|> List.tryFind (fun it -> (Permalink.toString it.path).EndsWith feedPath) with
|
||||
| Some feed ->
|
||||
Some (Custom feed,
|
||||
feed.podcast |> Option.map (fun p -> p.itemsInFeed) |> Option.defaultValue postCount)
|
||||
| None ->
|
||||
// No feed
|
||||
None
|
||||
|
||||
/// Determine the function to retrieve posts for the given feed
|
||||
let private getFeedPosts (webLog : WebLog) feedType =
|
||||
match feedType with
|
||||
| StandardFeed -> Data.Post.findPageOfPublishedPosts webLog.id 1
|
||||
| CategoryFeed catId -> Data.Post.findPageOfCategorizedPosts webLog.id [ catId ] 1
|
||||
| TagFeed tag -> Data.Post.findPageOfTaggedPosts webLog.id tag 1
|
||||
| Custom feed ->
|
||||
match feed.source with
|
||||
| Category catId -> Data.Post.findPageOfCategorizedPosts webLog.id [ catId ] 1
|
||||
| Tag tag -> Data.Post.findPageOfTaggedPosts webLog.id tag 1
|
||||
|
||||
/// Strip HTML from a string
|
||||
let private stripHtml text = Regex.Replace (text, "<(.|\n)*?>", "")
|
||||
|
||||
/// Create a feed item from the given post
|
||||
let private toFeedItem webLog (authors : MetaItem list) (cats : DisplayCategory[]) (tagMaps : TagMap list)
|
||||
(post : Post) =
|
||||
let plainText =
|
||||
match stripHtml post.text with
|
||||
| txt when txt.Length < 255 -> txt
|
||||
| txt -> $"{txt.Substring (0, 252)}..."
|
||||
let item = SyndicationItem (
|
||||
Id = WebLog.absoluteUrl webLog post.permalink,
|
||||
Title = TextSyndicationContent.CreateHtmlContent post.title,
|
||||
PublishDate = DateTimeOffset post.publishedOn.Value,
|
||||
LastUpdatedTime = DateTimeOffset post.updatedOn,
|
||||
Content = TextSyndicationContent.CreatePlaintextContent plainText)
|
||||
item.AddPermalink (Uri item.Id)
|
||||
|
||||
let encoded =
|
||||
post.text.Replace("src=\"/", $"src=\"{webLog.urlBase}/").Replace ("href=\"/", $"href=\"{webLog.urlBase}/")
|
||||
item.ElementExtensions.Add ("encoded", "http://purl.org/rss/1.0/modules/content/", encoded)
|
||||
item.Authors.Add (SyndicationPerson (
|
||||
Name = (authors |> List.find (fun a -> a.name = WebLogUserId.toString post.authorId)).value))
|
||||
[ post.categoryIds
|
||||
|> List.map (fun catId ->
|
||||
let cat = cats |> Array.find (fun c -> c.id = CategoryId.toString catId)
|
||||
SyndicationCategory (cat.name, WebLog.absoluteUrl webLog (Permalink $"category/{cat.slug}/"), cat.name))
|
||||
post.tags
|
||||
|> List.map (fun tag ->
|
||||
let urlTag =
|
||||
match tagMaps |> List.tryFind (fun tm -> tm.tag = tag) with
|
||||
| Some tm -> tm.urlValue
|
||||
| None -> tag.Replace (" ", "+")
|
||||
SyndicationCategory (tag, WebLog.absoluteUrl webLog (Permalink $"tag/{urlTag}/"), $"{tag} (tag)"))
|
||||
]
|
||||
|> List.concat
|
||||
|> List.iter item.Categories.Add
|
||||
item
|
||||
|
||||
/// Add episode information to a podcast feed item
|
||||
let private addEpisode webLog (feed : CustomFeed) (post : Post) (item : SyndicationItem) =
|
||||
let podcast = Option.get feed.podcast
|
||||
let meta name = post.metadata |> List.tryFind (fun it -> it.name = name)
|
||||
let value (item : MetaItem) = item.value
|
||||
let epMediaUrl =
|
||||
match (meta >> Option.get >> value) "media" with
|
||||
| link when link.StartsWith "http" -> link
|
||||
| link -> WebLog.absoluteUrl webLog (Permalink link)
|
||||
let epMediaType =
|
||||
match meta "mediaType", podcast.defaultMediaType with
|
||||
| Some epType, _ -> Some epType.value
|
||||
| None, Some defType -> Some defType
|
||||
| _ -> None
|
||||
let epImageUrl =
|
||||
match defaultArg ((meta >> Option.map value) "image") (Permalink.toString podcast.imageUrl) with
|
||||
| link when link.StartsWith "http" -> link
|
||||
| link -> WebLog.absoluteUrl webLog (Permalink link)
|
||||
let epExplicit =
|
||||
try
|
||||
(meta >> Option.map (value >> ExplicitRating.parse)) "explicit"
|
||||
|> Option.defaultValue podcast.explicit
|
||||
|> ExplicitRating.toString
|
||||
with :? ArgumentException -> ExplicitRating.toString podcast.explicit
|
||||
|
||||
let encXml = XmlDocument ()
|
||||
let encElt = encXml.CreateElement "enclosure"
|
||||
encElt.SetAttribute ("url", epMediaUrl)
|
||||
meta "length" |> Option.iter (fun it -> encElt.SetAttribute ("length", it.value))
|
||||
epMediaType |> Option.iter (fun typ -> encElt.SetAttribute ("type", typ))
|
||||
item.ElementExtensions.Add ("enclosure", "", encXml)
|
||||
|
||||
item.ElementExtensions.Add ("creator", "dc", podcast.displayedAuthor)
|
||||
item.ElementExtensions.Add ("author", "itunes", podcast.displayedAuthor)
|
||||
meta "subtitle" |> Option.iter (fun it -> item.ElementExtensions.Add ("subtitle", "itunes", it.value))
|
||||
item.ElementExtensions.Add ("summary", "itunes", stripHtml post.text)
|
||||
item.ElementExtensions.Add ("image", "itunes", epImageUrl)
|
||||
item.ElementExtensions.Add ("explicit", "itunes", epExplicit)
|
||||
meta "duration" |> Option.iter (fun it -> item.ElementExtensions.Add ("duration", "itunes", it.value))
|
||||
|
||||
if post.metadata |> List.exists (fun it -> it.name = "chapter") then
|
||||
try
|
||||
let chapXml = XmlDocument ()
|
||||
let chapsElt = chapXml.CreateElement ("psc", "chapters", "")
|
||||
chapsElt.SetAttribute ("version", "1.2")
|
||||
|
||||
post.metadata
|
||||
|> List.filter (fun it -> it.name = "chapter")
|
||||
|> List.map (fun it ->
|
||||
TimeSpan.Parse (it.value.Split(" ")[0]), it.value.Substring (it.value.IndexOf(" ") + 1))
|
||||
|> List.sortBy fst
|
||||
|> List.iter (fun chap ->
|
||||
let chapElt = chapXml.CreateElement ("psc", "chapter", "")
|
||||
chapElt.SetAttribute ("start", (fst chap).ToString "hh:mm:ss")
|
||||
chapElt.SetAttribute ("title", snd chap)
|
||||
chapsElt.AppendChild chapElt |> ignore)
|
||||
|
||||
chapXml.AppendChild chapsElt |> ignore
|
||||
item.ElementExtensions.Add ("chapters", "psc", chapXml)
|
||||
with _ -> ()
|
||||
item
|
||||
|
||||
/// Add a namespace to the feed
|
||||
let private addNamespace (feed : SyndicationFeed) alias nsUrl =
|
||||
feed.AttributeExtensions.Add (XmlQualifiedName (alias, "http://www.w3.org/2000/xmlns/"), nsUrl)
|
||||
|
||||
/// Add items to the top of the feed required for podcasts
|
||||
let private addPodcast webLog (rssFeed : SyndicationFeed) (feed : CustomFeed) =
|
||||
let addChild (doc : XmlDocument) name prefix value =
|
||||
let child = doc.CreateElement (name, prefix, "") |> doc.AppendChild
|
||||
child.Value <- value
|
||||
doc
|
||||
|
||||
let podcast = Option.get feed.podcast
|
||||
let feedUrl = WebLog.absoluteUrl webLog feed.path
|
||||
let imageUrl =
|
||||
match podcast.imageUrl with
|
||||
| Permalink link when link.StartsWith "http" -> link
|
||||
| Permalink _ -> WebLog.absoluteUrl webLog podcast.imageUrl
|
||||
|
||||
let categoryXml = XmlDocument ()
|
||||
let catElt = categoryXml.CreateElement ("itunes", "category", "")
|
||||
catElt.SetAttribute ("text", podcast.iTunesCategory)
|
||||
let subCat = categoryXml.CreateElement ("itunes", "category", "")
|
||||
subCat.SetAttribute ("text", podcast.iTunesSubcategory)
|
||||
catElt.AppendChild subCat |> ignore
|
||||
categoryXml.AppendChild catElt |> ignore
|
||||
|
||||
[ "dc", "http://purl.org/dc/elements/1.1/"
|
||||
"itunes", "http://www.itunes.com/dtds/podcast-1.0.dtd"
|
||||
"psc", "http://podlove.org/simple-chapters/"
|
||||
"rawvoice", "http://www.rawvoice.com/rawvoiceRssModule/"
|
||||
]
|
||||
|> List.iter (fun (alias, nsUrl) -> addNamespace rssFeed alias nsUrl)
|
||||
|
||||
rssFeed.ElementExtensions.Add
|
||||
("image", "",
|
||||
[ "title", podcast.title
|
||||
"url", imageUrl
|
||||
"link", feedUrl
|
||||
]
|
||||
|> List.fold (fun doc (name, value) -> addChild doc name "" value) (XmlDocument ()))
|
||||
// TODO: is copyright required?
|
||||
rssFeed.ElementExtensions.Add ("summary", "itunes", podcast.summary)
|
||||
rssFeed.ElementExtensions.Add ("author", "itunes", podcast.displayedAuthor)
|
||||
podcast.subtitle |> Option.iter (fun sub -> rssFeed.ElementExtensions.Add ("subtitle", "itunes", sub))
|
||||
rssFeed.ElementExtensions.Add
|
||||
("owner", "itunes",
|
||||
[ "name", podcast.displayedAuthor
|
||||
"email", podcast.email
|
||||
]
|
||||
|> List.fold (fun doc (name, value) -> addChild doc name "itunes" value) (XmlDocument ()))
|
||||
rssFeed.ElementExtensions.Add ("image", "itunes", imageUrl)
|
||||
rssFeed.ElementExtensions.Add ("category", "itunes", categoryXml)
|
||||
rssFeed.ElementExtensions.Add ("explicit", "itunes", ExplicitRating.toString podcast.explicit)
|
||||
rssFeed.ElementExtensions.Add ("subscribe", "rawvoice", feedUrl)
|
||||
|
||||
// GET {any-prescribed-feed}
|
||||
let generate (feedType : FeedType) postCount : HttpHandler = fun next ctx -> backgroundTask {
|
||||
let webLog = ctx.WebLog
|
||||
let conn = ctx.Conn
|
||||
let! posts = getFeedPosts webLog feedType postCount conn
|
||||
let! authors = Post.getAuthors webLog posts conn
|
||||
let! tagMaps = Post.getTagMappings webLog posts conn
|
||||
let cats = CategoryCache.get ctx
|
||||
let podcast = match feedType with Custom feed when Option.isSome feed.podcast -> Some feed | _ -> None
|
||||
|
||||
let toItem post =
|
||||
let item = toFeedItem webLog authors cats tagMaps post
|
||||
match podcast with
|
||||
| Some feed when post.metadata |> List.exists (fun it -> it.name = "media") ->
|
||||
addEpisode webLog feed post item
|
||||
| _ -> item
|
||||
|
||||
let feed = SyndicationFeed ()
|
||||
feed.Title <- TextSyndicationContent webLog.name
|
||||
feed.Description <- TextSyndicationContent <| defaultArg webLog.subtitle webLog.name
|
||||
feed.LastUpdatedTime <- DateTimeOffset <| (List.head posts).updatedOn
|
||||
feed.Generator <- generator ctx
|
||||
feed.Items <- posts |> Seq.ofList |> Seq.map toItem
|
||||
feed.Language <- "en"
|
||||
feed.Id <- webLog.urlBase
|
||||
|
||||
feed.Links.Add (SyndicationLink (Uri $"{webLog.urlBase}/feed.xml", "self", "", "application/rss+xml", 0L))
|
||||
feed.AttributeExtensions.Add
|
||||
(XmlQualifiedName ("content", "http://www.w3.org/2000/xmlns/"), "http://purl.org/rss/1.0/modules/content/")
|
||||
feed.ElementExtensions.Add ("link", "", webLog.urlBase)
|
||||
podcast |> Option.iter (addPodcast webLog feed)
|
||||
|
||||
use mem = new MemoryStream ()
|
||||
use xml = XmlWriter.Create mem
|
||||
feed.SaveAsRss20 xml
|
||||
xml.Close ()
|
||||
|
||||
let _ = mem.Seek (0L, SeekOrigin.Begin)
|
||||
let rdr = new StreamReader(mem)
|
||||
let! output = rdr.ReadToEndAsync ()
|
||||
|
||||
return! (setHttpHeader "Content-Type" "text/xml" >=> setStatusCode 200 >=> setBodyFromString output) next ctx
|
||||
}
|
||||
|
|
@ -2,7 +2,6 @@
|
|||
module MyWebLog.Handlers.Post
|
||||
|
||||
open System
|
||||
open Microsoft.AspNetCore.Http
|
||||
|
||||
/// Parse a slug and page number from an "everything else" URL
|
||||
let private parseSlugAndPage (slugAndPage : string seq) =
|
||||
|
|
@ -27,14 +26,14 @@ type ListType =
|
|||
open MyWebLog
|
||||
|
||||
/// Get all authors for a list of posts as metadata items
|
||||
let private getAuthors (webLog : WebLog) (posts : Post list) conn =
|
||||
let getAuthors (webLog : WebLog) (posts : Post list) conn =
|
||||
posts
|
||||
|> List.map (fun p -> p.authorId)
|
||||
|> List.distinct
|
||||
|> Data.WebLogUser.findNames webLog.id conn
|
||||
|
||||
/// Get all tag mappings for a list of posts as metadata items
|
||||
let private getTagMappings (webLog : WebLog) (posts : Post list) =
|
||||
let getTagMappings (webLog : WebLog) (posts : Post list) =
|
||||
posts
|
||||
|> List.map (fun p -> p.tags)
|
||||
|> List.concat
|
||||
|
|
@ -46,7 +45,7 @@ open DotLiquid
|
|||
open MyWebLog.ViewModels
|
||||
|
||||
/// Convert a list of posts into items ready to be displayed
|
||||
let private preparePostList webLog posts listType (url : string) pageNbr perPage ctx conn = task {
|
||||
let preparePostList webLog posts listType (url : string) pageNbr perPage ctx conn = task {
|
||||
let! authors = getAuthors webLog posts conn
|
||||
let! tagMappings = getTagMappings webLog posts conn
|
||||
let relUrl it = Some <| WebLog.relativeUrl webLog (Permalink it)
|
||||
|
|
@ -195,178 +194,6 @@ let home : HttpHandler = fun next ctx -> task {
|
|||
| None -> return! Error.notFound next ctx
|
||||
}
|
||||
|
||||
/// Functions to support generating RSS feeds
|
||||
module Feed =
|
||||
|
||||
open System.IO
|
||||
open System.ServiceModel.Syndication
|
||||
open System.Text.RegularExpressions
|
||||
open System.Xml
|
||||
|
||||
/// The type of feed to generate
|
||||
type FeedType =
|
||||
| Standard
|
||||
| Category of CategoryId
|
||||
| Tag of string
|
||||
| Custom of CustomFeed
|
||||
|
||||
/// Derive the type of RSS feed requested
|
||||
let deriveFeedType ctx webLog feedPath : (FeedType * int) option =
|
||||
let name = $"/{webLog.rss.feedName}"
|
||||
let postCount = defaultArg webLog.rss.itemsInFeed webLog.postsPerPage
|
||||
// Standard feed
|
||||
match webLog.rss.feedEnabled && feedPath = name with
|
||||
| true -> Some (Standard, postCount)
|
||||
| false ->
|
||||
// Category feed
|
||||
match CategoryCache.get ctx |> Array.tryFind (fun cat -> cat.slug = feedPath.Replace (name, "")) with
|
||||
| Some cat -> Some (Category (CategoryId cat.id), postCount)
|
||||
| None ->
|
||||
// Tag feed
|
||||
match feedPath.StartsWith "/tag/" with
|
||||
| true -> Some (Tag (feedPath.Replace("/tag/", "").Replace(name, "")), postCount)
|
||||
| false ->
|
||||
// Custom feed
|
||||
match webLog.rss.customFeeds
|
||||
|> List.tryFind (fun it -> (Permalink.toString it.path).EndsWith feedPath) with
|
||||
| Some feed ->
|
||||
Some (Custom feed,
|
||||
feed.podcast |> Option.map (fun p -> p.itemsInFeed) |> Option.defaultValue postCount)
|
||||
| None ->
|
||||
// No feed
|
||||
None
|
||||
|
||||
// GET {any-prescribed-feed}
|
||||
let generate (feedType : FeedType) postCount : HttpHandler = fun next ctx -> backgroundTask {
|
||||
// TODO: stopped here; use feed type and count in the below function
|
||||
let webLog = ctx.WebLog
|
||||
let conn = ctx.Conn
|
||||
let! posts = Data.Post.findPageOfPublishedPosts webLog.id 1 postCount conn
|
||||
let! authors = getAuthors webLog posts conn
|
||||
let! tagMaps = getTagMappings webLog posts conn
|
||||
let cats = CategoryCache.get ctx
|
||||
|
||||
let toItem (post : Post) =
|
||||
let plainText =
|
||||
Regex.Replace (post.text, "<(.|\n)*?>", "")
|
||||
|> function
|
||||
| txt when txt.Length < 255 -> txt
|
||||
| txt -> $"{txt.Substring (0, 252)}..."
|
||||
let item = SyndicationItem (
|
||||
Id = WebLog.absoluteUrl webLog post.permalink,
|
||||
Title = TextSyndicationContent.CreateHtmlContent post.title,
|
||||
PublishDate = DateTimeOffset post.publishedOn.Value,
|
||||
LastUpdatedTime = DateTimeOffset post.updatedOn,
|
||||
Content = TextSyndicationContent.CreatePlaintextContent plainText)
|
||||
item.AddPermalink (Uri item.Id)
|
||||
|
||||
let encoded =
|
||||
post.text.Replace("src=\"/", $"src=\"{webLog.urlBase}/").Replace ("href=\"/", $"href=\"{webLog.urlBase}/")
|
||||
item.ElementExtensions.Add ("encoded", "http://purl.org/rss/1.0/modules/content/", encoded)
|
||||
item.Authors.Add (SyndicationPerson (
|
||||
Name = (authors |> List.find (fun a -> a.name = WebLogUserId.toString post.authorId)).value))
|
||||
[ post.categoryIds
|
||||
|> List.map (fun catId ->
|
||||
let cat = cats |> Array.find (fun c -> c.id = CategoryId.toString catId)
|
||||
SyndicationCategory (cat.name, WebLog.absoluteUrl webLog (Permalink $"category/{cat.slug}/"), cat.name))
|
||||
post.tags
|
||||
|> List.map (fun tag ->
|
||||
let urlTag =
|
||||
match tagMaps |> List.tryFind (fun tm -> tm.tag = tag) with
|
||||
| Some tm -> tm.urlValue
|
||||
| None -> tag.Replace (" ", "+")
|
||||
SyndicationCategory (tag, WebLog.absoluteUrl webLog (Permalink $"tag/{urlTag}/"), $"{tag} (tag)"))
|
||||
]
|
||||
|> List.concat
|
||||
|> List.iter item.Categories.Add
|
||||
item
|
||||
|
||||
|
||||
let feed = SyndicationFeed ()
|
||||
feed.Title <- TextSyndicationContent webLog.name
|
||||
feed.Description <- TextSyndicationContent <| defaultArg webLog.subtitle webLog.name
|
||||
feed.LastUpdatedTime <- DateTimeOffset <| (List.head posts).updatedOn
|
||||
feed.Generator <- generator ctx
|
||||
feed.Items <- posts |> Seq.ofList |> Seq.map toItem
|
||||
feed.Language <- "en"
|
||||
feed.Id <- webLog.urlBase
|
||||
|
||||
feed.Links.Add (SyndicationLink (Uri $"{webLog.urlBase}/feed.xml", "self", "", "application/rss+xml", 0L))
|
||||
feed.AttributeExtensions.Add
|
||||
(XmlQualifiedName ("content", "http://www.w3.org/2000/xmlns/"), "http://purl.org/rss/1.0/modules/content/")
|
||||
feed.ElementExtensions.Add ("link", "", webLog.urlBase)
|
||||
|
||||
use mem = new MemoryStream ()
|
||||
use xml = XmlWriter.Create mem
|
||||
feed.SaveAsRss20 xml
|
||||
xml.Close ()
|
||||
|
||||
let _ = mem.Seek (0L, SeekOrigin.Begin)
|
||||
let rdr = new StreamReader(mem)
|
||||
let! output = rdr.ReadToEndAsync ()
|
||||
|
||||
return! ( setHttpHeader "Content-Type" "text/xml" >=> setStatusCode 200 >=> setBodyFromString output) next ctx
|
||||
}
|
||||
|
||||
|
||||
/// Sequence where the first returned value is the proper handler for the link
|
||||
let private deriveAction (ctx : HttpContext) : HttpHandler seq =
|
||||
let webLog = ctx.WebLog
|
||||
let conn = ctx.Conn
|
||||
let textLink =
|
||||
let _, extra = WebLog.hostAndPath webLog
|
||||
let url = string ctx.Request.Path
|
||||
(if extra = "" then url else url.Substring extra.Length).ToLowerInvariant ()
|
||||
let await it = (Async.AwaitTask >> Async.RunSynchronously) it
|
||||
seq {
|
||||
debug "Post" ctx (fun () -> $"Considering URL {textLink}")
|
||||
// Home page directory without the directory slash
|
||||
if textLink = "" then yield redirectTo true (WebLog.relativeUrl webLog Permalink.empty)
|
||||
let permalink = Permalink (textLink.Substring 1)
|
||||
// Current post
|
||||
match Data.Post.findByPermalink permalink webLog.id conn |> await with
|
||||
| Some post ->
|
||||
let model = preparePostList webLog [ post ] SinglePost "" 1 1 ctx conn |> await
|
||||
model.Add ("page_title", post.title)
|
||||
yield fun next ctx -> themedView "single-post" next ctx model
|
||||
| None -> ()
|
||||
// Current page
|
||||
match Data.Page.findByPermalink permalink webLog.id conn |> await with
|
||||
| Some page ->
|
||||
yield fun next ctx ->
|
||||
Hash.FromAnonymousObject {| page = DisplayPage.fromPage webLog page; page_title = page.title |}
|
||||
|> themedView (defaultArg page.template "single-page") next ctx
|
||||
| None -> ()
|
||||
// RSS feed
|
||||
match Feed.deriveFeedType ctx webLog textLink with
|
||||
| Some (feedType, postCount) -> yield Feed.generate feedType postCount
|
||||
| None -> ()
|
||||
// Post differing only by trailing slash
|
||||
let altLink = Permalink (if textLink.EndsWith "/" then textLink[..textLink.Length - 2] else $"{textLink}/")
|
||||
match Data.Post.findByPermalink altLink webLog.id conn |> await with
|
||||
| Some post -> yield redirectTo true (WebLog.relativeUrl webLog post.permalink)
|
||||
| None -> ()
|
||||
// Page differing only by trailing slash
|
||||
match Data.Page.findByPermalink altLink webLog.id conn |> await with
|
||||
| Some page -> yield redirectTo true (WebLog.relativeUrl webLog page.permalink)
|
||||
| None -> ()
|
||||
// Prior post
|
||||
match Data.Post.findCurrentPermalink [ permalink; altLink ] webLog.id conn |> await with
|
||||
| Some link -> yield redirectTo true (WebLog.relativeUrl webLog link)
|
||||
| None -> ()
|
||||
// Prior page
|
||||
match Data.Page.findCurrentPermalink [ permalink; altLink ] webLog.id conn |> await with
|
||||
| Some link -> yield redirectTo true (WebLog.relativeUrl webLog link)
|
||||
| None -> ()
|
||||
}
|
||||
|
||||
// GET {all-of-the-above}
|
||||
let catchAll : HttpHandler = fun next ctx -> task {
|
||||
match deriveAction ctx |> Seq.tryHead with
|
||||
| Some handler -> return! handler next ctx
|
||||
| None -> return! Error.notFound next ctx
|
||||
}
|
||||
|
||||
// GET /admin/posts
|
||||
// GET /admin/posts/page/{pageNbr}
|
||||
let all pageNbr : HttpHandler = fun next ctx -> task {
|
||||
|
|
|
|||
|
|
@ -4,6 +4,72 @@ module MyWebLog.Handlers.Routes
|
|||
open Giraffe
|
||||
open MyWebLog
|
||||
|
||||
/// Module to resolve routes that do not match any other known route (web blog content)
|
||||
module CatchAll =
|
||||
|
||||
open DotLiquid
|
||||
open Microsoft.AspNetCore.Http
|
||||
open MyWebLog.ViewModels
|
||||
|
||||
/// Sequence where the first returned value is the proper handler for the link
|
||||
let private deriveAction (ctx : HttpContext) : HttpHandler seq =
|
||||
let webLog = ctx.WebLog
|
||||
let conn = ctx.Conn
|
||||
let textLink =
|
||||
let _, extra = WebLog.hostAndPath webLog
|
||||
let url = string ctx.Request.Path
|
||||
(if extra = "" then url else url.Substring extra.Length).ToLowerInvariant ()
|
||||
let await it = (Async.AwaitTask >> Async.RunSynchronously) it
|
||||
seq {
|
||||
debug "Post" ctx (fun () -> $"Considering URL {textLink}")
|
||||
// Home page directory without the directory slash
|
||||
if textLink = "" then yield redirectTo true (WebLog.relativeUrl webLog Permalink.empty)
|
||||
let permalink = Permalink (textLink.Substring 1)
|
||||
// Current post
|
||||
match Data.Post.findByPermalink permalink webLog.id conn |> await with
|
||||
| Some post ->
|
||||
let model = Post.preparePostList webLog [ post ] Post.ListType.SinglePost "" 1 1 ctx conn |> await
|
||||
model.Add ("page_title", post.title)
|
||||
yield fun next ctx -> themedView "single-post" next ctx model
|
||||
| None -> ()
|
||||
// Current page
|
||||
match Data.Page.findByPermalink permalink webLog.id conn |> await with
|
||||
| Some page ->
|
||||
yield fun next ctx ->
|
||||
Hash.FromAnonymousObject {| page = DisplayPage.fromPage webLog page; page_title = page.title |}
|
||||
|> themedView (defaultArg page.template "single-page") next ctx
|
||||
| None -> ()
|
||||
// RSS feed
|
||||
match Feed.deriveFeedType ctx textLink with
|
||||
| Some (feedType, postCount) -> yield Feed.generate feedType postCount
|
||||
| None -> ()
|
||||
// Post differing only by trailing slash
|
||||
let altLink = Permalink (if textLink.EndsWith "/" then textLink[..textLink.Length - 2] else $"{textLink}/")
|
||||
match Data.Post.findByPermalink altLink webLog.id conn |> await with
|
||||
| Some post -> yield redirectTo true (WebLog.relativeUrl webLog post.permalink)
|
||||
| None -> ()
|
||||
// Page differing only by trailing slash
|
||||
match Data.Page.findByPermalink altLink webLog.id conn |> await with
|
||||
| Some page -> yield redirectTo true (WebLog.relativeUrl webLog page.permalink)
|
||||
| None -> ()
|
||||
// Prior post
|
||||
match Data.Post.findCurrentPermalink [ permalink; altLink ] webLog.id conn |> await with
|
||||
| Some link -> yield redirectTo true (WebLog.relativeUrl webLog link)
|
||||
| None -> ()
|
||||
// Prior page
|
||||
match Data.Page.findCurrentPermalink [ permalink; altLink ] webLog.id conn |> await with
|
||||
| Some link -> yield redirectTo true (WebLog.relativeUrl webLog link)
|
||||
| None -> ()
|
||||
}
|
||||
|
||||
// GET {all-of-the-above}
|
||||
let route : HttpHandler = fun next ctx -> task {
|
||||
match deriveAction ctx |> Seq.tryHead with
|
||||
| Some handler -> return! handler next ctx
|
||||
| None -> return! Error.notFound next ctx
|
||||
}
|
||||
|
||||
/// The primary myWebLog router
|
||||
let router : HttpHandler = choose [
|
||||
GET >=> choose [
|
||||
route "/" >=> Post.home
|
||||
|
|
@ -69,7 +135,7 @@ let router : HttpHandler = choose [
|
|||
route "/log-on" >=> User.doLogOn
|
||||
]
|
||||
])
|
||||
GET >=> Post.catchAll
|
||||
GET >=> CatchAll.route
|
||||
Error.notFound
|
||||
]
|
||||
|
||||
|
|
|
|||
|
|
@ -13,6 +13,7 @@
|
|||
<Compile Include="Handlers\Helpers.fs" />
|
||||
<Compile Include="Handlers\Admin.fs" />
|
||||
<Compile Include="Handlers\Post.fs" />
|
||||
<Compile Include="Handlers\Feed.fs" />
|
||||
<Compile Include="Handlers\User.fs" />
|
||||
<Compile Include="Handlers\Routes.fs" />
|
||||
<Compile Include="DotLiquidBespoke.fs" />
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user