#!/usr/bin/env python3
from __future__ import annotations

from pathlib import Path
import argparse
import sys

ROOT = Path(__file__).resolve().parents[1]
SRC = ROOT / "src"
if str(SRC) not in sys.path:
    sys.path.insert(0, str(SRC))

from app_kit.sponsor_policy import (
    DEFAULT_POLICY_RELATIVE_PATH,
    DEFAULT_WAIVER_RELATIVE_PATH,
    check_sponsor_policy,
    format_sponsor_policy_result,
)


def build_parser() -> argparse.ArgumentParser:
    parser = argparse.ArgumentParser(description="Check sponsor-aligned models against the registry.")
    parser.add_argument(
        "--model-registry",
        type=Path,
        default=Path("configs/model_registry.yaml"),
        help="Path to configs/model_registry.yaml or a compatible registry file.",
    )
    parser.add_argument(
        "--policy",
        type=Path,
        default=Path(DEFAULT_POLICY_RELATIVE_PATH),
        help="Path to the sponsor model policy file.",
    )
    parser.add_argument(
        "--waiver",
        type=Path,
        default=Path(DEFAULT_WAIVER_RELATIVE_PATH),
        help="Optional waiver file path. If present and valid, mismatches pass with a warning.",
    )
    return parser


def main(argv: list[str] | None = None) -> int:
    parser = build_parser()
    args = parser.parse_args(argv)
    waiver_path = args.waiver if args.waiver.exists() else None
    result = check_sponsor_policy(args.model_registry, args.policy, waiver_path)
    stdout, stderr, exit_code = format_sponsor_policy_result(result)
    if stdout:
        print(stdout)
    if stderr:
        print(stderr, file=sys.stderr)
    return exit_code


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