#!/usr/bin/env python
"""commit-msg hook body: reject messages that aren't ``<type>: <description>``.

Invoked by ``.githooks/commit-msg`` with the path to the commit message file.
Validation logic lives in :mod:`release.commits` so it is unit-tested.
"""

from __future__ import annotations

import sys
from pathlib import Path

sys.path.insert(0, str(Path(__file__).resolve().parent))

from release.commits import KNOWN_TYPES, validate_commit_message  # noqa: E402


def main(argv: list[str]) -> int:
    if len(argv) < 2:
        return 0
    message = Path(argv[1]).read_text("utf-8")
    error = validate_commit_message(message)
    if error is None:
        return 0
    indented = "\n  ".join(error.splitlines())
    sys.stderr.write(
        "\n  x Commit rejected: invalid commit message.\n\n"
        f"  {indented}\n\n"
        f"  Format : <type>(<optional scope>): <description>\n"
        f"  Types  : {', '.join(KNOWN_TYPES)}\n"
        "  Example: feat(da12): add live sensor sparkline\n\n"
    )
    return 1


if __name__ == "__main__":
    raise SystemExit(main(sys.argv))