import argparse
import sys
from pathlib import Path

from . import Config, PyServeServer, __version__


def main() -> None:
    parser = argparse.ArgumentParser(
        description="PyServe - HTTP web server",
        prog="pyserve",
    )
    parser.add_argument("-c", "--config", default="config.yaml", help="Path to configuration file (default: config.yaml)")
    parser.add_argument("--host", help="Host to bind the server to")
    parser.add_argument("--port", type=int, help="Port to bind the server to")
    parser.add_argument("--debug", action="store_true", help="Enable debug mode")
    parser.add_argument("--version", action="version", version=f"%(prog)s {__version__}")

    args = parser.parse_args()

    config_path = args.config
    if not Path(config_path).exists():
        print(f"Configuration file {config_path} not found")
        print("Using default configuration")
        config = Config()
    else:
        try:
            config = Config.from_yaml(config_path)
        except Exception as e:
            print(f"Configuration loading error: {e}")
            sys.exit(1)

    if args.host:
        config.server.host = args.host
    if args.port:
        config.server.port = args.port
    if args.debug:
        config.logging.level = "DEBUG"

    server = PyServeServer(config)

    try:
        print(f"Starting PyServe server on {config.server.host}:{config.server.port}")
        server.run()
    except KeyboardInterrupt:
        print("\nServer stopped by user")
    except Exception as e:
        print(f"Server startup error: {e}")
        sys.exit(1)


if __name__ == "__main__":
    main()