Implement forum moderation

app/controllers/ForumPost.scala

@@ -2,6 +2,7 @@ package controllers
 
 import lila._
 import views._
+import security.Permission
 
 object ForumPost extends LilaController with Forum {
 
@@ -9,7 +10,7 @@ object ForumPost extends LilaController with Forum {
   def postApi = env.forum.postApi
   def forms = env.forum.forms
 
-  val recent = Open { implicit ctx =>
+  val recent = Open { implicit ctx ⇒
     Ok(html.forum.post.recent(env.forum.recent(ctx.me)))
   }
 
@@ -31,5 +32,8 @@ object ForumPost extends LilaController with Forum {
     }
   }
 
-  def delete(id: String) = TODO
+  def delete(id: String) = Secure(Permission.ModerateForum) { implicit ctx ⇒
+    _ ⇒
+      IOk(postApi delete id)
+  }
 }

app/forum/PostApi.scala

@@ -67,4 +67,22 @@ final class PostApi(env: ForumEnv, maxPerPage: Int) {
       currentPage = page,
       maxPerPage = maxPerPage
     ) | paginator(topic, 1)
+
+  def delete(postId: String): IO[Unit] = for {
+    postOption ← env.postRepo byId postId
+    viewOption ← postOption.fold(view, io(none))
+    _ ← viewOption.fold(
+      view ⇒ (view.topic.nbPosts == 1).fold(
+        env.topicApi.delete(view.categ, view.topic),
+        for {
+          _ ← env.postRepo removeIO view.post
+          _ ← env.topicApi denormalize view.topic
+          _ ← env.categApi denormalize view.categ
+          _ ← env.recent.invalidate
+        } yield ()
+      ),
+      io()
+    )
+  } yield ()
+
 }

app/forum/PostRepo.scala

@@ -42,6 +42,10 @@ final class PostRepo(
       upsert = true)
   }
 
+  def removeIO(post: Post): IO[Unit] = io {
+    remove(DBObject("_id" -> post.id))
+  }
+
   def byTopicQuery(topic: Topic) = DBObject("topicId" -> topic.id)
 
   private def byTopicsQuery(topics: List[Topic]) =

app/forum/TopicApi.scala

@@ -59,6 +59,12 @@ final class TopicApi(env: ForumEnv, maxPerPage: Int) {
       maxPerPage = maxPerPage
     ) | paginator(categ, 1)
 
+  def delete(categ: Categ, topic: Topic): IO[Unit] = for {
+    _ ← env.topicRepo removeIO topic
+    _ ← env.categApi denormalize categ
+    _ ← env.recent.invalidate
+  } yield ()
+
   def denormalize(topic: Topic): IO[Unit] = for {
     nbPosts ← env.postRepo countByTopics List(topic)
     lastPost ← env.postRepo lastByTopics List(topic)

app/forum/TopicRepo.scala

@@ -58,6 +58,10 @@ final class TopicRepo(
       upsert = true)
   }
 
+  def removeIO(topic: Topic): IO[Unit] = io {
+    remove(DBObject("_id" -> topic.id))
+  }
+
   val sortQuery = DBObject("updatedAt" -> -1)
 
   def byCategQuery(categ: Categ) = DBObject("categId" -> categ.slug)

app/views/forum/categ/show.scala.html

@@ -36,9 +36,6 @@ title = categ.name) {
           <a href="@routes.ForumTopic.show(categ.slug, topic.slug, topic pageOf post)#@post.number">@showDate(post.createdAt)</a><br />by @authorName(post)
           }
         </td>
-        @if(isGranted(Permission.ModerateForum)) {
-        <td><a class="delete" href="@routes.ForumTopic.delete(topic.id)">Delete</a></td>
-        }
       </tr>
       }
     </tbody>

conf/routes

@@ -96,8 +96,7 @@ GET   /forum/:categSlug/form           controllers.ForumTopic.form(categSlug: St
 POST  /forum/:categSlug/new            controllers.ForumTopic.create(categSlug: String)
 GET   /forum/:categSlug/:slug          controllers.ForumTopic.show(categSlug: String, slug: String, page: Int ?= 1)
 POST  /forum/:categSlug/:slug/new      controllers.ForumPost.create(categSlug: String, slug: String, page: Int ?= 1)
-GET   /forum/delete/topic/:id          controllers.ForumTopic.delete(id: String)
-GET   /forum/delete/post/:id           controllers.ForumPost.delete(id: String)
+POST  /forum/delete/post/:id           controllers.ForumPost.delete(id: String)
 
 # Monitor
 GET   /monitor                         controllers.Monitor.index

public/javascripts/forum.js

@@ -10,5 +10,13 @@ $(function() {
         $input.val(i2);
       });
     });
+    $("#lichess_forum a.delete").unbind("click").click(function() {
+      if (confirm("Delete?")) {
+        var $this = $(this)
+        $.post($this.attr("href"), function(d) {
+          $this.closest(".post").slideUp(500);
+        });
+      }
+      return false;
+    });
 });
-