SideEffects: Handle ChatMessage creation.

lib/pleroma/web/activity_pub/side_effects.ex

@@ -5,8 +5,10 @@ defmodule Pleroma.Web.ActivityPub.SideEffects do
   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 \\ [])
@@ -21,8 +23,35 @@ defmodule Pleroma.Web.ActivityPub.SideEffects do
     {: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)
+
+    {: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