@asynccontextmanager
async def lifespan(_app: FastAPI):
    ex_app.set_handlers(APP, enabled_handler, heartbeat_callback, init_handler=init_handler)
    yield
    
    
async def enabled_handler(enabled: bool, nc: NextcloudApp) -> str:
    print(f"enabled_handler: enabled={enabled}", flush=True)
    if enabled:
        nc.log(ex_app.LogLvl.WARNING, f"Hello from {nc.app_cfg.app_name} :)")
    else:
        nc.log(ex_app.LogLvl.WARNING, f"Bye bye from {nc.app_cfg.app_name} :(")
    return ""


async def init_handler(nc: NextcloudApp):
    nc.set_init_status(100)


async def heartbeat_callback():
    return "ok"