import fcntl
import hashlib
import os

from tg_mainbot import WEBHOOK_SECRET, WEBHOOK_URL, app, setup_webhook


def _ensure_webhook():
    """
    Один раз на старте gunicorn регистрируем webhook с secret_token.
    Блокирующий flock — без гонки 4 воркеров и без 429.
    """
    digest = hashlib.sha256(
        f"{WEBHOOK_URL}|{WEBHOOK_SECRET or ''}|allowed_v2".encode("utf-8")
    ).hexdigest()[:16]
    marker_path = f"/tmp/zilant_webhook_ok_{digest}"
    lock_path = "/tmp/zilant_webhook_setup.lock"

    with open(lock_path, "w") as lock_file:
        fcntl.flock(lock_file.fileno(), fcntl.LOCK_EX)
        if os.path.exists(marker_path):
            return
        setup_webhook()
        with open(marker_path, "w") as marker:
            marker.write("ok\n")


_ensure_webhook()

if __name__ == "__main__":
    setup_webhook()
    app.run()