1 files changed, 17 insertions, 0 deletions
diff --git a/lib/pleroma/web/common_api/utils.ex b/lib/pleroma/web/common_api/utils.ex
index 8e482eef7..f28a96320 100644
--- a/lib/pleroma/web/common_api/utils.ex
+++ b/lib/pleroma/web/common_api/utils.ex
@@ -100,12 +100,29 @@ defmodule Pleroma.Web.CommonAPI.Utils do
     end
   end
 
+  def get_to_and_cc(_user, mentions, _inReplyTo, {:list, _}), do: {mentions, []}
+
   def get_addressed_users(_, to) when is_list(to) do
     User.get_ap_ids_by_nicknames(to)
   end
 
   def get_addressed_users(mentioned_users, _), do: mentioned_users
 
+  def maybe_add_list_data(activity_params, user, {:list, list_id}) do
+    case Pleroma.List.get(list_id, user) do
+      %Pleroma.List{} = list ->
+        activity_params
+        |> put_in([:additional, "bcc"], [list.ap_id])
+        |> put_in([:additional, "listMessage"], list.ap_id)
+        |> put_in([:object, "listMessage"], list.ap_id)
+
+      _ ->
+        activity_params
+    end
+  end
+
+  def maybe_add_list_data(activity_params, _, _), do: activity_params
+
   def make_poll_data(%{"poll" => %{"options" => options, "expires_in" => expires_in}} = data)
       when is_list(options) do
     %{max_expiration: max_expiration, min_expiration: min_expiration} =