with open('src/app_controller.py', 'rb') as f:
    content = f.read()

# Fix _update_ticket_depends_on
old = b'    if self.engine:\r\n     from src.dag_engine import TrackDAG, ExecutionEngine\r\n     self.engine.dag = TrackDAG(self.active_track.tickets)\r\n     self.engine.engine = ExecutionEngine(self.engine.dag, auto_queue=self.engine.engine.auto_queue)'
new = b'    engine = self.engines.get(self.active_track.id if self.active_track else None)\r\n    if engine:\r\n     from src.dag_engine import TrackDAG, ExecutionEngine\r\n     engine.dag = TrackDAG(self.active_track.tickets)\r\n     engine.engine = ExecutionEngine(engine.dag, auto_queue=engine.engine.auto_queue)'
content = content.replace(old, new)

with open('src/app_controller.py', 'wb') as f:
    f.write(content)

print("Done")