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import pylrc
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from pylrc.classes import Lyrics, LyricLine
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import os
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def load_lrc(fname: str) -> Lyrics:
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    with open(fname, 'r', encoding='utf-8') as f:
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        lrcstr = ''.join(f.readlines())
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        return pylrc.parse(lrcstr)
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def get_lst() -> list[str]:
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    lst = []
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    filelst = os.listdir('.')
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    for fname in filelst:
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        if fname.endswith('_orig.lrc'):
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            if fname[:-9] + '_tran.lrc' in filelst:
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                lst.append(fname[:-9])
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    return lst
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def ms_to_tag(line: LyricLine) -> str:
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    return f'{line.minutes:02d}:{line.seconds:02d}.{line.milliseconds:03d}'
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def find_match(lyrics: Lyrics, time: str | LyricLine) -> LyricLine | None:
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    if isinstance(time, LyricLine):
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        time = ms_to_tag(time)
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    for i in range(len(lyrics)):
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        if ms_to_tag(lyrics[i]) == time and lyrics[i].text != '':
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            return lyrics[i]
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    return None
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def transfer(fname: str) -> None:
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    orig = load_lrc(f'{fname}_orig.lrc')
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    tran = load_lrc(f'{fname}_tran.lrc')
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    mixed = load_lrc(f'{fname}_orig.lrc')
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    mixed.clear()
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    i = 0
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    while i < len(orig):
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        try:
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            mixed.append(orig[i])
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            match = find_match(tran, orig[i])
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            if match:
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                mixed.append(match)
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        except IndexError:
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            pass
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        i += 1
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    result = mixed.toLRC()
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    with open(f'{fname}_mixed.lrc', 'w', encoding='utf-8') as f:
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        f.write(result)
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if __name__ == '__main__':
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    lst = get_lst()
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    print(f'List: {lst}')
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    for i in lst:
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        print(f'Transferring {i}...')
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        transfer(i)
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    print('Finished!')