"""Start the RAG-cut backend API server."""

from __future__ import annotations

import argparse
import sys
from pathlib import Path

BACKEND_DIR = Path(__file__).resolve().parent


def main() -> None:
    parser = argparse.ArgumentParser(description="Start RAG-cut backend API")
    parser.add_argument("--host", default="127.0.0.1", help="Bind host (default: 127.0.0.1)")
    parser.add_argument("--port", type=int, default=8000, help="Bind port (default: 8000)")
    parser.add_argument(
        "--reload",
        action=argparse.BooleanOptionalAction,
        default=True,
        help="Auto-reload on code changes (default: on)",
    )
    args = parser.parse_args()

    backend = str(BACKEND_DIR)
    if backend not in sys.path:
        sys.path.insert(0, backend)

    import uvicorn

    uvicorn.run(
        "api.main:app",
        host=args.host,
        port=args.port,
        reload=args.reload,
        reload_dirs=[backend] if args.reload else None,
    )


if __name__ == "__main__":
    main()