WIP on revision mgt template (#13)

src/MyWebLog.Domain/ViewModels.fs

@@ -147,6 +147,28 @@ type DisplayPage =
         }
 
 
+/// Information about a revision used for display
+[<CLIMutable; NoComparison; NoEquality>]
+type DisplayRevision =
+    {   /// The as-of date/time for the revision
+        asOf : DateTime
+        
+        /// The as-of date/time for the revision in the web log's local time zone
+        asOfLocal : DateTime
+        
+        /// The format of the text of the revision
+        format : string
+    }
+with
+
+    /// Create a display revision from an actual revision
+    static member fromRevision webLog (rev : Revision) =
+        { asOf      = rev.asOf
+          asOfLocal = WebLog.localTime webLog rev.asOf
+          format    = MarkupText.sourceType rev.text
+        }
+
+
 open System.IO
 
 /// Information about an uploaded file used for display
@@ -766,6 +788,39 @@ type ManagePermalinksModel =
         }
 
 
+/// View model to manage revisions
+[<CLIMutable; NoComparison; NoEquality>]
+type ManageRevisionsModel =
+    {   /// The ID for the entity being edited
+        id : string
+        
+        /// The type of entity being edited ("page" or "post")
+        entity : string
+        
+        /// The current title of the page or post
+        currentTitle : string
+        
+        /// The revisions for the page or post
+        revisions : DisplayRevision[]
+    }
+    
+    /// Create a revision model from a page
+    static member fromPage webLog (pg : Page) =
+        { id           = PageId.toString pg.id
+          entity       = "page"
+          currentTitle = pg.title
+          revisions    = pg.revisions |> List.map (DisplayRevision.fromRevision webLog) |> Array.ofList
+        }
+
+    /// Create a revision model from a post
+    static member fromPost webLog (post : Post) =
+        { id           = PostId.toString post.id
+          entity       = "post"
+          currentTitle = post.title
+          revisions    = post.revisions |> List.map (DisplayRevision.fromRevision webLog) |> Array.ofList
+        }
+
+
 /// View model for posts in a list
 [<NoComparison; NoEquality>]
 type PostListItem =

src/MyWebLog/DotLiquidBespoke.fs

@@ -226,11 +226,11 @@ let register () =
       typeof<CustomFeed>; typeof<Episode>; typeof<Episode option>;    typeof<MetaItem>; typeof<Page>
       typeof<RssOptions>; typeof<TagMap>;  typeof<UploadDestination>; typeof<WebLog>
       // View models
-      typeof<DashboardModel>; typeof<DisplayCategory>;       typeof<DisplayCustomFeed>;   typeof<DisplayPage>
-      typeof<DisplayUpload>;  typeof<EditCategoryModel>;     typeof<EditCustomFeedModel>; typeof<EditPageModel>
-      typeof<EditPostModel>;  typeof<EditRssModel>;          typeof<EditTagMapModel>;     typeof<EditUserModel>
-      typeof<LogOnModel>;     typeof<ManagePermalinksModel>; typeof<PostDisplay>;         typeof<PostListItem>
-      typeof<SettingsModel>;  typeof<UserMessage>
+      typeof<DashboardModel>;  typeof<DisplayCategory>;  typeof<DisplayCustomFeed>;     typeof<DisplayPage>
+      typeof<DisplayRevision>; typeof<DisplayUpload>;    typeof<EditCategoryModel>;     typeof<EditCustomFeedModel>
+      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

@@ -190,6 +190,21 @@ let savePagePermalinks : HttpHandler = fun next ctx -> task {
     | false -> return! Error.notFound next ctx
 }
 
+// GET /admin/page/{id}/revisions
+let editPageRevisions pgId : HttpHandler = fun next ctx -> task {
+    let webLog = ctx.WebLog
+    match! ctx.Data.Page.findFullById (PageId pgId) webLog.id with
+    | Some pg ->
+        return!
+            Hash.FromAnonymousObject {|
+                csrf       = csrfToken ctx
+                model      = ManageRevisionsModel.fromPage webLog pg
+                page_title = $"Manage Page Permalinks"
+            |}
+            |> viewForTheme "admin" "revisions" next ctx
+    | None -> return! Error.notFound next ctx
+}
+
 // POST /admin/page/{id}/delete
 let deletePage pgId : HttpHandler = fun next ctx -> task {
     let webLog = ctx.WebLog

src/admin-theme/revisions.liquid

@@ -0,0 +1,58 @@
+<h2 class="my-3">{{ page_title }}</h2>
+<article>
+  <form method="post">
+    <input type="hidden" name="{{ csrf.form_field_name }}" value="{{ csrf.request_token }}">
+    <input type="hidden" name="id" value="{{ model.id }}">
+    <div class="container">
+      <div class="row">
+        <div class="col">
+          <p style="line-height:1.2rem;">
+            <strong>{{ model.current_title }}</strong><br>
+            <small class="text-muted">
+              {%- capture back_link %}admin/{{ model.entity }}/{{ model.id }}/edit{% endcapture -%}
+              <a href="{{ back_link | relative_link }}">&laquo; Back to Edit {{ model.entity | capitalize }}</a>
+            </small>
+          </p>
+        </div>
+      </div>
+      {%- assign revision_count = model.revisions | size -%}
+      {%- capture rev_url_base %}admin/{{ model.entity }}/{{ model.id }}/revision{% endcapture -%}
+      {%- if revision_count > 1 %}
+        {% capture delete_all %}{{ rev_url_base }}s/purge{% endcapture %}
+        <div class="row mb-3">
+          <div class="col">
+            <button type="button" class="btn btn-sm btn-danger" hx-post="{{ delete_all | relative_link }}"
+                    hx-confirm="This will remove all revisions but the current one; are you sure this is what you wish to do?">
+              Delete All Prior Revisions
+            </button>
+          </div>
+        </div>
+      {%- endif %}
+      {% for rev in model.revisions %}
+        <div class="row mb-3">
+          <div class="col">
+            {{ rev.as_of_local | date: "MMMM d, yyyy" }} at {{ rev.as_of_local | date: "h:mmaa" | downcase }}
+            <span class="badge bg-secondary text-uppercase">{{ ref.format }}</span>
+            {%- if forloop.first %}
+              <span class="badge bg-primary text-uppercase ms-2">Current Revision</span>
+            {%- endif %}<br>
+            {% unless forloop.first %}
+              {%- capture rev_url_prefix %}{{ rev_url_base }}/{{ rev.as_of | date: "o" }}{% endcapture -%}
+              <small>
+                <a href="TODO">Preview</a>
+                <span class="text-muted"> &bull; </span>
+                {%- capture rev_restore %}{{ rev_url_prefix }}/restore{% endcapture -%}
+                {%- capture rev_restore_link %}{{ rev_restore | relative_link }}{% endcapture -%}
+                <a href="{{ rev_restore_link }}" hx-post="{{ rev_restore_link }}">Restore as Current</a>
+                <span class="text-muted"> &bull; </span>
+                {%- capture rev_del %}{{ rev_url_prefix }}/delete{% endcapture -%}
+                {%- capture rev_del_link %}{{ rev_del | relative_link }}{% endcapture -%}
+                <a href="{{ rev_del_link }}" hx-post="{{ rev_del_link }}" class="text-danger">Delete</a>
+              </small>
+            {% endunless %}
+          </div>
+        </div>
+      {% endfor %}
+    </div>
+  </form>
+</article>