defmodule Pleroma.Web.ActivityPub.SideEffects do @moduledoc """ This module looks at an inserted object and executes the side effects that it implies. For example, a `Like` activity will increase the like count on the liked object, a `Follow` activity will add the user to the follower collection, and so on. """ alias Pleroma.Chat alias Pleroma.Notification alias Pleroma.Object alias Pleroma.User alias Pleroma.Web.ActivityPub.Utils def handle(object, meta \\ []) # Tasks this handles: # - Add like to object # - Set up notification def handle(%{data: %{"type" => "Like"}} = object, meta) do liked_object = Object.get_by_ap_id(object.data["object"]) Utils.add_like_to_object(object, liked_object) Notification.create_notifications(object) {:ok, object, meta} end def handle(%{data: %{"type" => "Create", "object" => object_id}} = activity, meta) do object = Object.get_by_ap_id(object_id) {:ok, _object} = handle_object_creation(object) Notification.create_notifications(activity) {:ok, activity, meta} end # Nothing to do def handle(object, meta) do {:ok, object, meta} end def handle_object_creation(%{data: %{"type" => "ChatMessage"}} = object) do actor = User.get_cached_by_ap_id(object.data["actor"]) recipient = User.get_cached_by_ap_id(hd(object.data["to"])) [[actor, recipient], [recipient, actor]] |> Enum.each(fn [user, other_user] -> if user.local do Chat.bump_or_create(user.id, other_user.ap_id) end end) {:ok, object} end # Nothing to do def handle_object_creation(object) do {:ok, object} end end