Allow disabling Chats feature

Signed-off-by: nicole mikołajczyk <git@mkljczk.pl>

config/config.exs

@@ -979,6 +979,8 @@ config :pleroma, :database_config_whitelist, [
   {:web_push_encryption, :vapid_details}
 ]
 
+config :pleroma, Pleroma.Chat, enabled: true
+
 # Import environment specific config. This must remain at the bottom
 # of this file so it overrides the configuration defined above.
 import_config "#{Mix.env()}.exs"

config/description.exs

@@ -2726,6 +2726,19 @@ config :pleroma, :config_description, [
       }
     ]
   },
+  %{
+    group: :pleroma,
+    key: Pleroma.Chat,
+    type: :group,
+    description: "Pleroma Chat settings",
+    children: [
+      %{
+        key: :enabled,
+        type: :boolean,
+        description: "Enables the backend chats API."
+      }
+    ]
+  },
   %{
     group: :pleroma,
     key: :http,

lib/pleroma/chat.ex

@@ -108,4 +108,6 @@ defmodule Pleroma.Chat do
     |> cast(%{pinned: false}, [:pinned])
     |> Repo.update()
   end
+
+  def enabled?, do: Pleroma.Config.get([__MODULE__, :enabled], true)
 end

lib/pleroma/web/activity_pub/views/user_view.ex

@@ -68,7 +68,7 @@ defmodule Pleroma.Web.ActivityPub.UserView do
     capabilities =
       if is_boolean(user.accepts_chat_messages) do
         %{
-          "acceptsChatMessages" => user.accepts_chat_messages
+          "acceptsChatMessages" => Pleroma.Chat.enabled?() and user.accepts_chat_messages
         }
       else
         %{}

lib/pleroma/web/mastodon_api/mastodon_api.ex

@@ -385,6 +385,15 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPI do
       |> cast_params()
       |> Map.update(:include_types, [], fn include_types -> include_types end)
 
+    if "pleroma:chat_mention" in options.include_types and not Pleroma.Chat.enabled?() do
+      options
+      |> Map.update(:include_types, [], fn include_types ->
+        List.delete(include_types, "pleroma:chat_mention")
+      end)
+    else
+      options
+    end
+
     if ("pleroma:report" not in options.include_types and
           User.privileged?(user, :reports_manage_reports)) or
          User.privileged?(user, :reports_manage_reports) do

lib/pleroma/web/mastodon_api/views/account_view.ex

@@ -287,6 +287,8 @@ defmodule Pleroma.Web.MastodonAPI.AccountView do
       user.last_status_at &&
         user.last_status_at |> NaiveDateTime.to_date() |> Date.to_iso8601()
 
+    accepts_chat_messages = Pleroma.Chat.enabled?() and user.accepts_chat_messages
+
     %{
       id: to_string(user.id),
       username: username_from_nickname(user.nickname),
@@ -336,7 +338,7 @@ defmodule Pleroma.Web.MastodonAPI.AccountView do
         relationship: relationship,
         skip_thread_containment: user.skip_thread_containment,
         background_image: image_url(user.background) |> MediaProxy.url(),
-        accepts_chat_messages: user.accepts_chat_messages,
+        accepts_chat_messages: accepts_chat_messages,
         favicon: favicon,
         avatar_description: avatar_description,
         header_description: header_description

lib/pleroma/web/mastodon_api/views/instance_view.ex

@@ -167,6 +167,9 @@ defmodule Pleroma.Web.MastodonAPI.InstanceView do
   def features do
     [
       "pleroma_api",
+      if Config.get([Pleroma.Chat, :enabled], true) do
+        "chat"
+      end,
       "mastodon_api",
       "mastodon_api_grouped_notifications",
       "mastodon_api_streaming",

lib/pleroma/web/pleroma_api/controllers/chat_controller.ex

@@ -41,6 +41,7 @@ defmodule Pleroma.Web.PleromaAPI.ChatController do
   )
 
   plug(Pleroma.Web.ApiSpec.CastAndValidate, replace_params: false)
+  plug(:ensure_chats_enabled)
 
   defdelegate open_api_operation(action), to: Pleroma.Web.ApiSpec.ChatOperation
 
@@ -244,4 +245,16 @@ defmodule Pleroma.Web.PleromaAPI.ChatController do
       _ -> nil
     end
   end
+
+  defp ensure_chats_enabled(conn, _opts) do
+    if Chat.enabled?() do
+      conn
+    else
+      conn
+      |> put_status(:not_found)
+      |> put_view(Pleroma.Web.ErrorView)
+      |> render("404.json")
+      |> halt()
+    end
+  end
 end

lib/pleroma/web/streamer.ex

@@ -289,15 +289,17 @@ defmodule Pleroma.Web.Streamer do
 
   defp do_stream(topic, {user, %MessageReference{} = cm_ref})
        when topic in ["user", "user:pleroma_chat"] do
-    topic = "#{topic}:#{user.id}"
+    if Pleroma.Chat.enabled?() do
+      topic = "#{topic}:#{user.id}"
 
-    text = StreamerView.render("chat_update.json", %{chat_message_reference: cm_ref}, topic)
+      text = StreamerView.render("chat_update.json", %{chat_message_reference: cm_ref}, topic)
 
-    Registry.dispatch(@registry, topic, fn list ->
-      Enum.each(list, fn {pid, _auth} ->
-        send(pid, {:text, text})
+      Registry.dispatch(@registry, topic, fn list ->
+        Enum.each(list, fn {pid, _auth} ->
+          send(pid, {:text, text})
+        end)
       end)
-    end)
+    end
   end
 
   defp do_stream("user", %Activity{} = item) do