#!/usr/bin/python3
import os
import socket
import sys
import urllib.parse
import urllib.request


def main() -> int:
    token = os.environ.get("TELEGRAM_BOT_TOKEN", "").strip()
    user_id = os.environ.get("TELEGRAM_USER_ID", "").strip()
    if not token or not user_id:
        print("Gyro failure notification skipped: Telegram credentials are absent")
        return 1

    proxy = os.environ.get("TELEGRAM_PROXY", "").strip()
    handlers = [urllib.request.ProxyHandler({"http": proxy, "https": proxy})] if proxy else []
    opener = urllib.request.build_opener(*handlers)
    failed_unit = sys.argv[1] if len(sys.argv) > 1 else "gyro.service"
    message = f"Gyro job failed on {socket.gethostname()}: {failed_unit}. Check journalctl -u gyro.service."
    body = urllib.parse.urlencode({"chat_id": user_id, "text": message}).encode()
    request = urllib.request.Request(
        f"https://api.telegram.org/bot{token}/sendMessage",
        data=body,
        method="POST",
    )

    try:
        with opener.open(request, timeout=20) as response:
            return 0 if response.status == 200 else 1
    except Exception as exc:
        print(f"Gyro failure notification failed: {type(exc).__name__}")
        return 1


if __name__ == "__main__":
    raise SystemExit(main())