Hide muted theads from home/public timelines unless `with_muted` is set

lib/pleroma/activity.ex

@@ -96,6 +96,7 @@ def with_set_thread_muted_field(query, %User{} = user) do
     from([a] in query,
       left_join: tm in ThreadMute,
       on: tm.user_id == ^user.id and tm.context == fragment("?->>'context'", a.data),
+      as: :thread_mute,
       select: %Activity{a | thread_muted?: not is_nil(tm.id)}
     )
   end

lib/pleroma/web/activity_pub/activity_pub.ex

@@ -790,14 +790,20 @@ defp restrict_reblogs(query, _), do: query
 
   defp restrict_muted(query, %{"with_muted" => val}) when val in [true, "true", "1"], do: query
 
-  defp restrict_muted(query, %{"muting_user" => %User{info: info}}) do
+  defp restrict_muted(query, %{"muting_user" => %User{info: info}} = opts) do
     mutes = info.mutes
 
-    from(
-      activity in query,
-      where: fragment("not (? = ANY(?))", activity.actor, ^mutes),
-      where: fragment("not (?->'to' \\?| ?)", activity.data, ^mutes)
-    )
+    query =
+      from([activity] in query,
+        where: fragment("not (? = ANY(?))", activity.actor, ^mutes),
+        where: fragment("not (?->'to' \\?| ?)", activity.data, ^mutes)
+      )
+
+    unless opts["skip_preload"] do
+      from([thread_mute: tm] in query, where: is_nil(tm))
+    else
+      query
+    end
   end
 
   defp restrict_muted(query, _), do: query
@@ -898,7 +904,7 @@ defp maybe_set_thread_muted_field(query, %{"skip_preload" => true}), do: query
 
   defp maybe_set_thread_muted_field(query, opts) do
     query
-    |> Activity.with_set_thread_muted_field(opts["user"])
+    |> Activity.with_set_thread_muted_field(opts["muting_user"] || opts["user"])
   end
 
   defp maybe_order(query, %{order: :desc}) do

lib/pleroma/web/streamer.ex

@@ -113,8 +113,7 @@ def handle_cast(
     |> Map.get("#{topic}:#{item.user_id}", [])
     |> Enum.each(fn socket ->
       with %User{} = user <- User.get_cached_by_ap_id(socket.assigns[:user].ap_id),
-           true <- should_send?(user, item),
-           false <- CommonAPI.thread_muted?(user, item.activity) do
+           true <- should_send?(user, item) do
         send(
           socket.transport_pid,
           {:text, represent_notification(socket.assigns[:user], item)}
@@ -236,7 +235,8 @@ defp should_send?(%User{} = user, %Activity{} = item) do
          %{host: parent_host} <- URI.parse(parent.data["actor"]),
          false <- Pleroma.Web.ActivityPub.MRF.subdomain_match?(domain_blocks, item_host),
          false <- Pleroma.Web.ActivityPub.MRF.subdomain_match?(domain_blocks, parent_host),
-         true <- thread_containment(item, user) do
+         true <- thread_containment(item, user),
+         false <- CommonAPI.thread_muted?(user, item) do
       true
     else
       _ -> false

test/web/activity_pub/activity_pub_test.exs

@@ -538,6 +538,29 @@ test "doesn't return muted activities" do
     assert Enum.member?(activities, activity_one)
   end
 
+  test "doesn't return thread muted activities" do
+    user = insert(:user)
+    activity_one = insert(:note_activity)
+    note_two = insert(:note, data: %{"context" => "suya.."})
+    activity_two = insert(:note_activity, note: note_two)
+
+    {:ok, _activity_two} = CommonAPI.add_mute(user, activity_two)
+
+    assert [activity_one] = ActivityPub.fetch_activities([], %{"muting_user" => user})
+  end
+
+  test "returns thread muted activities when with_muted is set" do
+    user = insert(:user)
+    activity_one = insert(:note_activity)
+    note_two = insert(:note, data: %{"context" => "suya.."})
+    activity_two = insert(:note_activity, note: note_two)
+
+    {:ok, activity_two} = CommonAPI.add_mute(user, activity_two)
+
+    assert [activity_two, activity_one] =
+             ActivityPub.fetch_activities([], %{"muting_user" => user, "with_muted" => true})
+  end
+
   test "does include announces on request" do
     activity_three = insert(:note_activity)
     user = insert(:user)

test/web/streamer_test.exs

@@ -414,6 +414,26 @@ test "it doesn't send muted reblogs" do
     Task.await(task)
   end
 
+  test "it doesn't send posts from muted threads" do
+    user = insert(:user)
+    user2 = insert(:user)
+    {:ok, user2, user, _activity} = CommonAPI.follow(user2, user)
+
+    {:ok, activity} = CommonAPI.post(user, %{"status" => "super hot take"})
+
+    {:ok, activity} = CommonAPI.add_mute(user2, activity)
+
+    task = Task.async(fn -> refute_receive {:text, _}, 4_000 end)
+
+    Streamer.add_socket(
+      "user",
+      %{transport_pid: task.pid, assigns: %{user: user2}}
+    )
+
+    Streamer.stream("user", activity)
+    Task.await(task)
+  end
+
   describe "direct streams" do
     setup do
       GenServer.start(Streamer, %{}, name: Streamer)