#!/usr/bin/env python3
"""Preview or explicitly prepare Meta outside a durable release run."""

from __future__ import annotations

import argparse
import json
from pathlib import Path

from govoplan_release.meta_preparation import (
    MetaPreparationAmbiguous,
    MetaPreparationError,
    _read_input,
    prepare_developer_meta_package,
)


def main() -> int:
    parser = argparse.ArgumentParser(description=__doc__)
    parser.add_argument("--workspace", type=Path, required=True)
    parser.add_argument("--target-version", required=True)
    parser.add_argument("--apply", action="store_true")
    parser.add_argument("--receipt", type=Path)
    parser.add_argument("--confirm-out-of-run", action="store_true")
    args = parser.parse_args()
    try:
        expected = None
        if args.apply:
            if args.receipt is None:
                raise MetaPreparationError(
                    "Apply requires the reviewed preview JSON via --receipt."
                )
            payload, _ = _read_input(args.receipt)
            expected = json.loads(payload)["receipt"]
        result = prepare_developer_meta_package(
            repo_path=args.workspace.absolute() / "govoplan",
            target_version=args.target_version,
            apply=args.apply,
            expected_receipt=expected,
            confirm_out_of_run=args.confirm_out_of_run,
        )
    except (MetaPreparationError, OSError, ValueError, KeyError, TypeError) as exc:
        status = "needs-reconciliation" if isinstance(exc, MetaPreparationAmbiguous) else "blocked"
        print(json.dumps({"status": status, "detail": str(exc)}))
        return 1
    print(json.dumps(result, indent=2))
    return 0


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