"""Docker worker liveness probe: no localhost Web dependency."""
import os
import time
from pathlib import Path
from . import db

def healthy(path=None, max_age=None):
    file=Path(path) if path is not None else db.DATA/'worker-heartbeat'
    limit=float(max_age if max_age is not None else os.getenv('SITEFORGE_WORKER_HEALTH_MAX_AGE','45'))
    if limit <= 0:return False
    try:
        age=time.time()-file.stat().st_mtime
        return -5 <= age < limit
    except OSError:
        return False

if __name__=='__main__':
    raise SystemExit(0 if healthy() else 1)