MastodonAPI: Add user favorites endpoint.

lib/pleroma/web/activity_pub/activity_pub.ex

@@ -147,6 +147,12 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
   end
   defp restrict_type(query, _), do: query
 
+  defp restrict_favorited_by(query, %{"favorited_by" => ap_id}) do
+    from activity in query,
+      where: fragment("? <@ (? #> '{\"object\",\"likes\"}')", ^ap_id, activity.data)
+  end
+  defp restrict_favorited_by(query, _), do: query
+
   def fetch_activities(recipients, opts \\ %{}) do
     base_query = from activity in Activity,
       limit: 20,
@@ -160,6 +166,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     |> restrict_max(opts)
     |> restrict_actor(opts)
     |> restrict_type(opts)
+    |> restrict_favorited_by(opts)
     |> Repo.all
     |> Enum.reverse
   end

lib/pleroma/web/mastodon_api/mastodon_api_controller.ex

@@ -312,6 +312,18 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
     json(conn, res)
   end
 
+  def favourites(%{assigns: %{user: user}} = conn, params) do
+    params = conn
+    |> Map.put("type", "Create")
+    |> Map.put("favorited_by", user.ap_id)
+
+    activities = ActivityPub.fetch_activities([], params)
+    |> Enum.reverse
+
+    conn
+    |> render(StatusView, "index.json", %{activities: activities, for: user, as: :activity})
+  end
+
   def relationship_noop(%{assigns: %{user: user}} = conn, %{"id" => id}) do
     Logger.debug("Unimplemented, returning unmodified relationship")
     with %User{} = target <- Repo.get(User, id) do

lib/pleroma/web/router.ex

@@ -58,6 +58,8 @@ defmodule Pleroma.Web.Router do
 
     get "/timelines/home", MastodonAPIController, :home_timeline
 
+    get "/favourites", MastodonAPIController, :favourites
+
     post "/statuses", MastodonAPIController, :post_status
     delete "/statuses/:id", MastodonAPIController, :delete_status