#!/usr/bin/env python3

import sys
from pathlib import Path


ALLOWED_SUFFIXES = ['.feature',
                    '.bugfix',
                    '.doc',
                    '.removal',
                    '.misc']


def get_root(script_path):
    folder = script_path.absolute().parent
    while not (folder / '.git').exists():
        folder = folder.parent
        if folder == folder.anchor:
            raise RuntimeError("git repo not found")
    return folder


def main(argv):
    print('Check "CHANGES" folder... ', end='', flush=True)
    here = Path(argv[0])
    root = get_root(here)
    changes = root / 'CHANGES'
    failed = False
    for fname in changes.iterdir():
        if fname.name == '.gitignore':
            continue
        if fname.suffix not in ALLOWED_SUFFIXES:
            if not failed:
                print('')
            print(fname, 'has illegal suffix', file=sys.stderr)
            failed = True

    if failed:
        print('', file=sys.stderr)
        print('Allowed suffixes are:', ALLOWED_SUFFIXES, file=sys.stderr)
        print('', file=sys.stderr)
    else:
        print('OK')

    return int(failed)


if __name__ == '__main__':
    sys.exit(main(sys.argv))