SideEffects: On deletion, reduce the User note count.

lib/pleroma/web/activity_pub/side_effects.ex

@@ -34,6 +34,7 @@ defmodule Pleroma.Web.ActivityPub.SideEffects do
   # - Delete and unpins the create activity
   # - Replace object with Tombstone
   # - Set up notification
+  # - Reduce the user note count
   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)
@@ -45,6 +46,7 @@ defmodule Pleroma.Web.ActivityPub.SideEffects do
                %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)
             ActivityPub.stream_out(object)
             ActivityPub.stream_out_participations(deleted_object, user)
             :ok

test/web/activity_pub/side_effects_test.exs

@@ -32,15 +32,16 @@ defmodule Pleroma.Web.ActivityPub.SideEffectsTest do
       %{user: user, delete: delete, post: post, object: object, delete_user: delete_user}
     end
 
-    test "it handles object deletions", %{delete: delete, post: post, object: object} do
+    test "it handles object deletions", %{delete: delete, post: post, object: object, user: user} do
       # In object deletions, the object is replaced by a tombstone and the
       # create activity is deleted.
 
-      with_mock Pleroma.Web.ActivityPub.ActivityPub,
+      with_mock Pleroma.Web.ActivityPub.ActivityPub, [:passthrough],
         stream_out: fn _ -> nil end,
         stream_out_participations: fn _, _ -> nil end do
         {:ok, delete, _} = SideEffects.handle(delete)
         user = User.get_cached_by_ap_id(object.data["actor"])
+
         assert called(Pleroma.Web.ActivityPub.ActivityPub.stream_out(delete))
         assert called(Pleroma.Web.ActivityPub.ActivityPub.stream_out_participations(object, user))
       end
@@ -48,6 +49,9 @@ defmodule Pleroma.Web.ActivityPub.SideEffectsTest do
       object = Object.get_by_id(object.id)
       assert object.data["type"] == "Tombstone"
       refute Activity.get_by_id(post.id)
+
+      user = User.get_by_id(user.id)
+      assert user.note_count == 0
     end
 
     test "it handles user deletions", %{delete_user: delete, user: user} do