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.User
  12   alias Pleroma.Web.ActivityPub.Utils
  13
  14   def handle(object, meta \\ [])
  15
  16   # Tasks this handles:
  17   # - Add like to object
  18   # - Set up notification
  19   def handle(%{data: %{"type" => "Like"}} = object, meta) do
  20     {:ok, result} =
  21       Pleroma.Repo.transaction(fn ->
  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     result
  31   end
  32
  33   def handle(%{data: %{"type" => "Create", "object" => object_id}} = activity, meta) do
  34     object = Object.get_by_ap_id(object_id)
  35
  36     {:ok, _object} = handle_object_creation(object)
  37
  38     Notification.create_notifications(activity)
  39
  40     {:ok, activity, meta}
  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(%{data: %{"type" => "ChatMessage"}} = object) do
  49     actor = User.get_cached_by_ap_id(object.data["actor"])
  50     recipient = User.get_cached_by_ap_id(hd(object.data["to"]))
  51
  52     [[actor, recipient], [recipient, actor]]
  53     |> Enum.each(fn [user, other_user] ->
  54       if user.local do
  55         Chat.bump_or_create(user.id, other_user.ap_id)
  56       end
  57     end)
  58
  59     {:ok, object}
  60   end
  61
  62   # Nothing to do
  63   def handle_object_creation(object) do
  64     {:ok, object}
  65   end
  66 end