taglrc.py

#!/bin/python
from mutagen.flac import FLAC
from pathlib import Path
import re

for p in Path('..').glob('**/*'):
    if not p.is_file() or p.suffix != '.flac':
        continue

    lrcp = p.with_suffix('.lrc')
    if not lrcp.exists():
        continue

    with open(lrcp, 'r') as f:
        lrc = f.read()

    tags = FLAC(p)
    artist = tags['artist'][0]
    track = tags['title'][0]
    album = tags['album'][0]
    duration = tags.info.length
    if not artist or not track or not album or not duration:
        print('Broken metadata for file', p)
        continue

    if '[al:' in lrc or '[ti:' in lrc or '[ar:' in lrc:
        print(p, 'already tagged')
        continue

    # TODO: Should there be support for tracks longer than 60 minutes
    minutes = duration // 60
    seconds = duration % 60

    lrc = f'''[ti:{track}]
[ar:{artist}]
[al:{album}]
[length:{int(minutes):0>2}:{int(seconds):0>2}]
[tool:voc-mpd-tools]

{lrc}'''

    print('Tagged', lrcp.name)

    with open(lrcp, 'w') as f:
        f.write(lrc)