"""CLI entry point for the SAM bridge: i2p-sam command."""

from __future__ import annotations

import argparse
import asyncio
import logging
import signal
import sys

from i2p_sam.bridge import SAMBridge


def main() -> None:
    parser = argparse.ArgumentParser(
        prog="i2p-sam",
        description="I2P SAM bridge — language-agnostic socket API for I2P",
    )
    parser.add_argument(
        "--host", default="127.0.0.1",
        help="Listen host (default: 127.0.0.1)",
    )
    parser.add_argument(
        "--port", type=int, default=7656,
        help="Listen port (default: 7656)",
    )
    parser.add_argument(
        "--log-level", default="INFO",
        choices=["DEBUG", "INFO", "WARNING", "ERROR"],
        help="Log level (default: INFO)",
    )
    args = parser.parse_args()

    logging.basicConfig(
        level=getattr(logging, args.log_level),
        format="%(asctime)s %(levelname)-8s %(name)s: %(message)s",
        stream=sys.stdout,
    )
    log = logging.getLogger(__name__)

    bridge = SAMBridge(host=args.host, port=args.port)

    async def run() -> None:
        await bridge.start()
        log.info("SAM bridge running on %s:%d", args.host, bridge.port)

        stop = asyncio.Event()
        loop = asyncio.get_event_loop()
        for sig in (signal.SIGTERM, signal.SIGINT):
            loop.add_signal_handler(sig, stop.set)
        await stop.wait()

        log.info("Signal received, shutting down...")
        await bridge.stop()

    asyncio.run(run())


if __name__ == "__main__":
    main()