topic hiding / restoring

lib/philomena/topics.ex

@@ -235,6 +235,16 @@ defmodule Philomena.Topics do
     |> Repo.isolated_transaction(:serializable)
   end
 
+  def hide_topic(topic, deletion_reason, user) do
+    Topic.hide_changeset(topic, deletion_reason, user)
+    |> Repo.update()
+  end
+
+  def unhide_topic(topic) do
+    Topic.unhide_changeset(topic)
+    |> Repo.update()
+  end
+
   def clear_notification(nil, _user), do: nil
   def clear_notification(_topic, nil), do: nil
   def clear_notification(topic, user) do

lib/philomena/topics/topic.ex

@@ -96,6 +96,21 @@ defmodule Philomena.Topics.Topic do
     |> put_change(:forum_id, new_forum_id)
   end
 
+  def hide_changeset(topic, deletion_reason, user) do
+    change(topic)
+    |> put_change(:hidden_from_users, true)
+    |> put_change(:deleted_by_id, user.id)
+    |> put_change(:deletion_reason, deletion_reason)
+    |> validate_required([:deletion_reason])
+  end
+
+  def unhide_changeset(topic) do
+    change(topic)
+    |> put_change(:hidden_from_users, false)
+    |> put_change(:deleted_by_id, nil)
+    |> put_change(:deletion_reason, "")
+  end
+
   def put_slug(changeset) do
     slug =
       changeset

lib/philomena_web/controllers/topic/hide_controller.ex

@@ -0,0 +1,54 @@
+defmodule PhilomenaWeb.Topic.HideController do
+  import Plug.Conn
+  use PhilomenaWeb, :controller
+
+  alias Philomena.Topics.Topic
+  alias Philomena.Topics
+  alias Philomena.Repo
+  import Ecto.Query
+
+  plug :load_topic
+  plug PhilomenaWeb.CanaryMapPlug, create: :hide, delete: :hide
+  plug :authorize_resource, model: Topic, id_name: "topic_id", persisted: true
+
+  def create(conn, %{"topic" => topic_params}) do
+    topic = conn.assigns.topic
+    deletion_reason = topic_params["deletion_reason"]
+    user = conn.assigns.current_user
+
+    case Topics.hide_topic(topic, deletion_reason, user) do
+      {:ok, topic} ->
+        conn
+        |> put_flash(:info, "Topic successfully hidden!")
+        |> redirect(to: Routes.forum_topic_path(conn, :show, topic.forum, topic))
+      {:error, _changeset} ->
+        conn
+        |> put_flash(:error, "Unable to hide the topic!")
+        |> redirect(to: Routes.forum_topic_path(conn, :show, topic.forum, topic))
+    end
+  end
+
+  def delete(conn, _opts) do
+    topic = conn.assigns.topic
+
+    case Topics.unhide_topic(topic) do
+      {:ok, topic} ->
+        conn
+        |> put_flash(:info, "Topic successfully restored!")
+        |> redirect(to: Routes.forum_topic_path(conn, :show, topic.forum, topic))
+      {:error, _changeset} ->
+        conn
+        |> put_flash(:error, "Unable to restore the topic!")
+        |> redirect(to: Routes.forum_topic_path(conn, :show, topic.forum, topic))
+    end
+  end
+
+  defp load_topic(conn, _opts) do
+    topic = Topic
+    |> where(forum_id: ^conn.params["forum_id"], slug: ^conn.params["topic_id"])
+    |> preload([:forum])
+    |> Repo.one()
+
+    Plug.Conn.assign(conn, :topic, topic)
+  end
+end

lib/philomena_web/controllers/topic_controller.ex

@@ -19,8 +19,8 @@ defmodule PhilomenaWeb.TopicController do
     forum = conn.assigns.forum
     topic =
       Topic
-      |> where(forum_id: ^forum.id, slug: ^slug, hidden_from_users: false)
+      |> where(forum_id: ^forum.id, slug: ^slug)
-      |> preload([:user, poll: :options])
+      |> preload([:deleted_by, :user, poll: :options])
       |> Repo.one()
 
     user = conn.assigns.current_user

lib/philomena_web/router.ex

@@ -129,6 +129,7 @@ defmodule PhilomenaWeb.Router do
         resources "/move", Topic.MoveController, only: [:create], singleton: true
         resources "/stick", Topic.StickController, only: [:create, :delete], singleton: true
         resources "/lock", Topic.LockController, only: [:create, :delete], singleton: true
+        resources "/hide", Topic.HideController, only: [:create, :delete], singleton: true
         resources "/posts", Topic.PostController, only: [:edit, :update] do
           resources "/hide", Topic.Post.HideController, only: [:create, :delete], singleton: true
           resources "/delete", Topic.Post.DeleteController, only: [:create], singleton: true

lib/philomena_web/templates/topic/show.html.slime

@@ -3,6 +3,23 @@ elixir:
   pagination = render PhilomenaWeb.PaginationView, "_pagination.html", page: @posts, route: route, last: true
 
 h1 = @topic.title
+= if @topic.hidden_from_users do
+  .block.block--fixed.block--danger
+    h4 This topic has been deleted by a moderator.
+    p
+      strong> Reason:
+      em
+        = @topic.deletion_reason
+    = if can?(@conn, :unhide, @topic) do
+      p
+        strong> Deleted by:
+        em
+          strong
+            = link(@topic.deleted_by.name, to: Routes.profile_path(@conn, :show, @topic.deleted_by))
+      p
+        = link(to: Routes.forum_topic_hide_path(@conn, :delete, @forum.id, @topic), method: :delete, class: "button") do
+          i.fas.fa-check>
+          ' Restore
 / Header section
 .block
   .block__header
@@ -11,6 +28,7 @@ h1 = @topic.title
     => link(@forum.name, to: Routes.forum_path(@conn, :show, @forum))
     ' »
     => link(@topic.title, to: Routes.forum_topic_path(@conn, :show, @forum, @topic))
+    = if not @topic.hidden_from_users or can?(@conn, :hide, @topic) do
       a href=Routes.post_path(@conn, :index, pq: "topic_id:#{@topic.id}")
         i.fa.fa-fw.fa-search>
         ' Search Posts
@@ -26,8 +44,10 @@ h1 = @topic.title
         .flex--fixed.block__header__item
           => @topic.post_count - 1
           ' replies
+        = if not @topic.hidden_from_users do
           = render PhilomenaWeb.Topic.SubscriptionView, "_subscription.html", forum: @forum, topic: @topic, watching: @watching, conn: @conn
 
+= if not @topic.hidden_from_users or can?(@conn, :hide, @topic) do
   / Display the poll, if any
   = if @topic.poll do
     = render PhilomenaWeb.Topic.PollView, "_display.html", poll: @topic.poll, conn: @conn
@@ -59,12 +79,15 @@ h1 = @topic.title
           p
             ' Lock reason:
             em = @topic.lock_reason
-
   / Post form
   = cond do
     - @conn.assigns.current_ban ->
       = render PhilomenaWeb.BanView, "_ban_reason.html", conn: @conn
 
+    - @topic.hidden_from_users ->
+      .block.block--fixed.block--danger
+        h4 Cannot reply to a deleted topic.
+
     - @topic.post_count < 200_000 and can?(@conn, :create_post, @topic) ->
       = render PhilomenaWeb.Topic.PostView, "_form.html", conn: @conn, forum: @forum, topic: @topic, changeset: @changeset
 
@@ -81,47 +104,42 @@ h1 = @topic.title
       .toggle-box-container
         .toggle-box-container__content
           p
+            = if not @topic.hidden_from_users do
               = cond do
                 - can?(@conn, :lock, @topic) and is_nil(@topic.locked_at) ->
-                = form_for :topic, Routes.forum_topic_lock_path(@conn, :create, @topic.forum_id, @topic), [method: :post, class: "hform"], fn f ->
+                  = form_for :topic, Routes.forum_topic_lock_path(@conn, :create, @forum.id, @topic), [method: :post, class: "hform"], fn f ->
-                  = text_input f, :lock_reason, class: "input hform__text", placeholder: "Lock reason"
+                    = text_input f, :lock_reason, class: "input hform__text", placeholder: "Lock reason", required: true
                     = submit class: "hform__button button" do
                       i.fas.fa-lock>
                       ' Lock
                 - can?(@conn, :unlock, @topic) and not is_nil(@topic.locked_at) ->
-                = link(to: Routes.forum_topic_lock_path(@conn, :delete, @topic.forum_id, @topic), method: :delete, class: "button") do
+                  = link(to: Routes.forum_topic_lock_path(@conn, :delete, @forum.id, @topic), method: :delete, class: "button") do
                     i.fas.fa-unlock>
                     ' Unlock
                 - true ->
               = cond do
                 - can?(@conn, :stick, @topic) and @topic.sticky ->
-                = link(to: Routes.forum_topic_stick_path(@conn, :delete, @topic.forum_id, @topic), method: :delete, class: "button") do
+                  = link(to: Routes.forum_topic_stick_path(@conn, :delete, @forum.id, @topic), method: :delete, class: "button") do
                     i.fas.fa-thumbtack>
                     ' Unstick
                 - can?(@conn, :stick, @topic) and not @topic.sticky ->
-                = link(to: Routes.forum_topic_stick_path(@conn, :create, @topic.forum_id, @topic), method: :post, class: "button") do
+                  = link(to: Routes.forum_topic_stick_path(@conn, :create, @forum.id, @topic), method: :post, class: "button") do
                     i.fas.fa-thumbtack>
                     ' Stick
                 - true ->
               = if can?(@conn, :move, @topic) do
-              = form_for :topic, Routes.forum_topic_move_path(@conn, :create, @topic.forum_id, @topic), [method: :post, class: "hform"], fn f ->
+                = form_for :topic, Routes.forum_topic_move_path(@conn, :create, @forum.id, @topic), [method: :post, class: "hform"], fn f ->
                   .field
                     = select f, :target_forum_id, @conn.assigns.forums |> Enum.map(fn forum -> {forum.name, forum.id} end), class: "input hform__text"
                     = submit class: "hform__button button" do
                       i.fas.fa-truck>
                       ' Move
-  / Mod tools
+              = if can?(@conn, :hide, @topic) do
-  /- if can? :assist, Topic
+                = form_for :topic, Routes.forum_topic_hide_path(@conn, :create, @forum.id, @topic), [method: :post, class: "hform"], fn f ->
-  /  .block__content
+                  .field
-  /    input.toggle-box id="administrator_tools" type="checkbox" checked=false
+                    = text_input f, :deletion_reason, class: "input hform__text", placeholder: "Deletion reason", required: true
-  /    label for="administrator_tools" Topic Admin Tools
+                    = submit class: "hform__button button" do
-  /    .toggle-box-container
+                      i.fas.fa-trash>
-  /      .toggle-box-container__content
+                      ' Delete
-  /        p
+            - else
-  /        - if can?(:destroy, @topic) && !@topic.hidden_from_users
+              | Moderation tools unavailable for deleted topics.
-  /          = form_tag forum_topic_hide_path(@forum, @topic), method: :post, class: 'hform' do
-  /            .field
-  /              => text_field_tag :deletion_reason, '', placeholder: 'Deletion reason', required: true, class: 'input hform__text'
-  /              => button_tag class: 'hform__button button' do
-  /                i.fa.fa-trash>
-  /                | Delete