"""Command-line entry point for the stdio MCP server."""

from __future__ import annotations

import argparse
import logging
import sys

from .errors import LabyricornMcpError
from .safety import RepositoryGuard
from .server import StdioMcpServer


def main() -> int:
    parser = argparse.ArgumentParser(description="Run the local repository-scoped Labyricorn MCP server over stdio.")
    parser.add_argument(
        "--repository",
        help="Labyricorn repository root. Defaults to LABYRICORN_REPOSITORY, then the current directory.",
    )
    parser.add_argument("--verbose", action="store_true", help="Write diagnostic detail to stderr.")
    arguments = parser.parse_args()
    logging.basicConfig(
        stream=sys.stderr,
        level=logging.INFO if arguments.verbose else logging.WARNING,
        format="labyricorn-mcp: %(levelname)s: %(message)s",
    )
    try:
        guard = RepositoryGuard.discover(arguments.repository)
        return StdioMcpServer(guard).serve_forever()
    except LabyricornMcpError as exc:
        print(f"labyricorn-mcp: ERROR: {exc.code}: {exc.message}", file=sys.stderr)
        return 2


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