import sys

from .parser import build_parser
from .dispatcher import dispatch


def main(argv=None) -> int:
    parser = build_parser()

    try:
        args = parser.parse_args(argv)

        if not args.command:
            parser.print_help()
            return 1

        return dispatch(args)

    except SystemExit as e:
        if e.code != 0:
            return e.code
        return 0
    except KeyboardInterrupt:
        print("\nInterrupted", file=sys.stderr)
        return 130
    except Exception as e:
        print(f"Fatal error: {e}", file=sys.stderr)
        return 1


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