git.squeep.com Git - akkoma/blob - lib/pleroma/web/activity_pub/side_effects.ex

   1 defmodule Pleroma.Web.ActivityPub.SideEffects do
   2   @moduledoc """
   3   This module looks at an inserted object and executes the side effects that it
   4   implies. For example, a `Like` activity will increase the like count on the
   5   liked object, a `Follow` activity will add the user to the follower
   6   collection, and so on.
   7   """
   8   alias Pleroma.Chat
   9   alias Pleroma.Notification
  10   alias Pleroma.Object
  11   alias Pleroma.Repo
  12   alias Pleroma.User
  13   alias Pleroma.Web.ActivityPub.Pipeline
  14   alias Pleroma.Web.ActivityPub.Utils
  15
  16   def handle(object, meta \\ [])
  17
  18   # Tasks this handles:
  19   # - Add like to object
  20   # - Set up notification
  21   def handle(%{data: %{"type" => "Like"}} = object, meta) do
  22     liked_object = Object.get_by_ap_id(object.data["object"])
  23     Utils.add_like_to_object(object, liked_object)
  24
  25     Notification.create_notifications(object)
  26
  27     {:ok, object, meta}
  28   end
  29
  30   # Tasks this handles
  31   # - Actually create object
  32   # - Rollback if we couldn't create it
  33   # - Set up notifications
  34   def handle(%{data: %{"type" => "Create"}} = activity, meta) do
  35     with {:ok, _object, _meta} <- handle_object_creation(meta[:object_data], meta) do
  36       Notification.create_notifications(activity)
  37       {:ok, activity, meta}
  38     else
  39       e -> Repo.rollback(e)
  40     end
  41   end
  42
  43   # Nothing to do
  44   def handle(object, meta) do
  45     {:ok, object, meta}
  46   end
  47
  48   def handle_object_creation(%{"type" => "ChatMessage"} = object, meta) do
  49     with {:ok, object, meta} <- Pipeline.common_pipeline(object, meta) do
  50       actor = User.get_cached_by_ap_id(object.data["actor"])
  51       recipient = User.get_cached_by_ap_id(hd(object.data["to"]))
  52
  53       [[actor, recipient], [recipient, actor]]
  54       |> Enum.each(fn [user, other_user] ->
  55         if user.local do
  56           Chat.bump_or_create(user.id, other_user.ap_id)
  57         end
  58       end)
  59
  60       {:ok, object, meta}
  61     end
  62   end
  63
  64   # Nothing to do
  65   def handle_object_creation(object) do
  66     {:ok, object}
  67   end
  68 end