fetchlyrics.py

#!/bin/python
import requests
from urllib.parse import urlencode
from mutagen.flac import FLAC
from pathlib import Path
from math import floor

token = ''
url = 'https://apic-desktop.musixmatch.com/ws/1.1/macro.subtitles.get'
headers = {
    'authority': 'apic-desktop.musixmatch.com',
    'cookie': 'x-mxm-token-guid='
}

Path('.ignore_lrc').touch(exist_ok=True)
with open('.ignore_lrc', 'r') as f:
    ignorelist = f.read()

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

    if p.with_suffix('.lrc').exists():
        # skip any existing lyrics
        continue

    if str(p) in ignorelist:
        # no lyrics found
        continue

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

    print('---')
    print(f'{artist} - {track}')

    params = {
        'app_id': 'web-desktop-app-v1.0',
        'format': 'json',
        'usertoken': token,
        'namespace': 'lyrics_richsynched',
        'subtitle_format': 'lrc',
        'q_artist': artist,
        'q_track': track,
        'q_duration': duration,
        'f_subtitle_length': floor(duration)
    }

    res = requests.get(url, params=params, headers=headers)
    try:
        j = res.json()
        body = j['message']['body']['macro_calls']

        if body['matcher.track.get']['message']['header']['status_code'] == 401:
            print('ratelimit')
            raise Exception

        if body['matcher.track.get']['message']['header']['status_code'] == 404:
            print('No track found')
            with open('.ignore_lrc', 'a') as f:
                f.write(str(p) + '\n')
            continue

        if 'track.subtitles.get' in body and body['track.subtitles.get']['message']['header']['status_code'] != 404 and 'subtitle_list' in body['track.subtitles.get']['message']['body'] :
            if len(body['track.subtitles.get']['message']['body']['subtitle_list']) > 1:
                print('Multiple subtitles? What do')
                raise Exception
            lrc = body['track.subtitles.get']['message']['body']['subtitle_list'][0]['subtitle']['subtitle_body']
            print(lrc)
            with open(p.with_suffix('.lrc'), 'w') as f:
                f.write(lrc)
        else:
            print('No lyrics found')
            print(body)
            with open('.ignore_lrc', 'a') as f:
                f.write(str(p) + '\n')
    except Exception:
        print(res.text)
        raise