Notifications: Simplify recipient calculation for some Activities.

Fixes the 'getting notfications for other people's posts' bug.

1 files changed, 22 insertions, 7 deletions

diff --git a/lib/pleroma/notification.ex b/lib/pleroma/notification.ex
index 98289af08..b14e7c843 100644
--- a/lib/pleroma/notification.ex
+++ b/lib/pleroma/notification.ex
@@ -339,13 +339,7 @@ defmodule Pleroma.Notification do
 
   def get_notified_from_activity(%Activity{data: %{"type" => type}} = activity, local_only)
       when type in ["Create", "Like", "Announce", "Follow", "Move", "EmojiReact"] do
-    potential_receiver_ap_ids =
-      []
-      |> Utils.maybe_notify_to_recipients(activity)
-      |> Utils.maybe_notify_mentioned_recipients(activity)
-      |> Utils.maybe_notify_subscribers(activity)
-      |> Utils.maybe_notify_followers(activity)
-      |> Enum.uniq()
+    potential_receiver_ap_ids = get_potential_receiver_ap_ids(activity)
 
     potential_receivers = User.get_users_from_set(potential_receiver_ap_ids, local_only)
 
@@ -363,6 +357,27 @@ defmodule Pleroma.Notification do
 
   def get_notified_from_activity(_, _local_only), do: {[], []}
 
+  # For some actitivies, only notifity the author of the object
+  def get_potential_receiver_ap_ids(%{data: %{"type" => type, "object" => object_id}})
+      when type in ~w{Like Announce EmojiReact} do
+    case Object.get_cached_by_ap_id(object_id) do
+      %Object{data: %{"actor" => actor}} ->
+        [actor]
+
+      _ ->
+        []
+    end
+  end
+
+  def get_potential_receiver_ap_ids(activity) do
+    []
+    |> Utils.maybe_notify_to_recipients(activity)
+    |> Utils.maybe_notify_mentioned_recipients(activity)
+    |> Utils.maybe_notify_subscribers(activity)
+    |> Utils.maybe_notify_followers(activity)
+    |> Enum.uniq()
+  end
+
   @doc "Filters out AP IDs domain-blocking and not following the activity's actor"
   def exclude_domain_blocker_ap_ids(ap_ids, activity, preloaded_users \\ [])