"""Background worker process for long-running schedulers.

Optional when ``NETX_RUN_INLINE_SCHEDULERS=false`` (API does not start collectors):

    python -m netx_api.worker

Starts: config_sync, lldp_collect, port_traffic, fabric_reconcile tick loops.
UME WS / keepalive remain in the API process (token + alarm coordination).
By default the API runs collectors inline — no separate worker needed.
"""

from __future__ import annotations

import logging
import signal
import threading
import time

logging.basicConfig(
    level=logging.INFO,
    format="%(asctime)s %(levelname)s %(name)s: %(message)s",
)
_log = logging.getLogger("netx.worker")


def main() -> None:
    stop = threading.Event()

    def _handle(_sig: int, _frame: object) -> None:
        _log.info("shutdown signal received")
        stop.set()

    for sig in (signal.SIGINT, signal.SIGTERM):
        try:
            signal.signal(sig, _handle)
        except Exception:
            pass

    from .ume_runtime import start_device_schedulers

    start_device_schedulers()
    try:
        from .runtime_budget import log_runtime_budget

        log_runtime_budget(role="worker")
    except Exception:
        _log.exception("worker runtime budget log failed")
    _log.info(
        "netx worker schedulers started (config_sync, lldp_collect, port_traffic, fabric_reconcile)"
    )

    while not stop.is_set():
        time.sleep(1.0)

    from .app_shutdown import shutdown_runtime

    shutdown_runtime(reason="worker_signal")
    _log.info("netx worker exiting")


if __name__ == "__main__":
    main()