#!/usr/bin/env python3
"""Validate every Gettext catalog changed or maintained in this repository."""

from __future__ import annotations

import sys
from pathlib import Path

import polib


def main() -> int:
    failures: list[str] = []
    catalogs = sorted(Path('.').glob('**/*.po'))
    if not catalogs:
        failures.append('no PO catalogs were found')

    for path in catalogs:
        try:
            catalog = polib.pofile(path, check_for_duplicates=True)
        except (OSError, UnicodeError, ValueError) as exc:
            failures.append(f'{path}: {exc}')
            continue
        if not catalog.metadata.get('Content-Type', '').startswith('text/plain'):
            failures.append(f'{path}: missing or invalid Content-Type metadata')

    if failures:
        print('\n'.join(failures), file=sys.stderr)
        return 1
    print(f'Validated {len(catalogs)} PO catalogs')
    return 0


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