"""Verify an archive checksum, or every member of an extracted HESRT package."""
from __future__ import annotations

import argparse
import json
from pathlib import Path

from hesrt_io import sha256, verify_members


def main() -> None:
    parser = argparse.ArgumentParser(description=__doc__)
    parser.add_argument("path", type=Path)
    parser.add_argument("--sha256", dest="expected", help="Required for a .tar.zst archive")
    args = parser.parse_args()
    if args.path.is_dir():
        manifest = verify_members(args.path)
        print(json.dumps({"gsm_id": manifest["gsm_id"], "verified_members": len(manifest["members"])}))
    else:
        if not args.expected:
            parser.error("Supply --sha256 from the versioned catalog or SHA256SUMS")
        actual = sha256(args.path)
        if actual.lower() != args.expected.lower():
            raise ValueError("Archive SHA256 mismatch")
        print(json.dumps({"archive_sha256": actual, "verified": True}))


if __name__ == "__main__":
    main()