refac

backend/open_webui/routers/folders.py

@@ -519,7 +519,8 @@ async def delete_folder_by_id(
 
     folder_owner_id = folder.user_id
 
-    if await Chats.count_chats_by_folder_id_and_user_id(id, folder_owner_id, db=db):
+    folder_ids = await Folders.get_folder_ids_by_id_and_user_id_in_subtree(id, folder_owner_id, db=db)
+    if await Chats.count_chats_by_folder_ids_and_user_id(folder_ids, folder_owner_id, db=db):
         chat_delete_permission = await has_permission(
             user.id, 'chat.delete', request.app.state.config.USER_PERMISSIONS, db=db
         )