+ # Tasks this handles
+ # - Actually create object
+ # - Rollback if we couldn't create it
+ # - Set up notifications
+ def handle(%{data: %{"type" => "Create"}} = activity, meta) do
+ with {:ok, _object, _meta} <- handle_object_creation(meta[:object_data], meta) do
+ Notification.create_notifications(activity)
+ {:ok, activity, meta}
+ else
+ e -> Repo.rollback(e)
+ end
+ end
+
+ # Tasks this handles:
+ # - Add announce to object
+ # - Set up notification
+ # - Stream out the announce
+ def handle(%{data: %{"type" => "Announce"}} = object, meta) do
+ announced_object = Object.get_by_ap_id(object.data["object"])
+ user = User.get_cached_by_ap_id(object.data["actor"])
+
+ Utils.add_announce_to_object(object, announced_object)
+
+ if !User.is_internal_user?(user) do
+ Notification.create_notifications(object)
+ ActivityPub.stream_out(object)
+ end
+
+ {:ok, object, meta}
+ end
+
+ def handle(%{data: %{"type" => "Undo", "object" => undone_object}} = object, meta) do
+ with undone_object <- Activity.get_by_ap_id(undone_object),
+ :ok <- handle_undoing(undone_object) do
+ {:ok, object, meta}
+ end
+ end
+
+ # Tasks this handles:
+ # - Add reaction to object
+ # - Set up notification
+ def handle(%{data: %{"type" => "EmojiReact"}} = object, meta) do
+ reacted_object = Object.get_by_ap_id(object.data["object"])
+ Utils.add_emoji_reaction_to_object(object, reacted_object)
+
+ Notification.create_notifications(object)
+
+ {:ok, object, meta}
+ end
+
+ # Tasks this handles:
+ # - Delete and unpins the create activity
+ # - Replace object with Tombstone
+ # - Set up notification
+ # - Reduce the user note count
+ # - Reduce the reply count
+ # - Stream out the activity
+ def handle(%{data: %{"type" => "Delete", "object" => deleted_object}} = object, meta) do
+ deleted_object =
+ Object.normalize(deleted_object, false) || User.get_cached_by_ap_id(deleted_object)
+
+ result =
+ case deleted_object do
+ %Object{} ->
+ with {:ok, deleted_object, activity} <- Object.delete(deleted_object),
+ %User{} = user <- User.get_cached_by_ap_id(deleted_object.data["actor"]) do
+ User.remove_pinnned_activity(user, activity)
+
+ {:ok, user} = ActivityPub.decrease_note_count_if_public(user, deleted_object)
+
+ if in_reply_to = deleted_object.data["inReplyTo"] do
+ Object.decrease_replies_count(in_reply_to)
+ end
+
+ ActivityPub.stream_out(object)
+ ActivityPub.stream_out_participations(deleted_object, user)
+ :ok
+ end
+
+ %User{} ->
+ with {:ok, _} <- User.delete(deleted_object) do
+ :ok
+ end
+ end
+
+ if result == :ok do
+ Notification.create_notifications(object)
+ {:ok, object, meta}
+ else
+ {:error, result}
+ end
+ end
+