YouTube Offline Mixtape

offline-mixtape.js

#!/usr/bin/env node

const { spawnSync} = require('child_process');
const fs = require('fs');

console.log('Fetching playlist metadata...');
spawnSync('youtube-dl.exe', [
  'https://www.youtube.com/playlist?list=LL3Hn4qVmdoFwdI2FEyw_JlA',
  '--playlist-end', '100',
  '--ignore-errors',
  '--skip-download',
  '--write-info-json'
]);

console.log('\nDownloading...');
fs.readdirSync('.')
  .filter(file => file.endsWith('.info.json'))
  .map(file => ({
    ...JSON.parse(fs.readFileSync(file)),
    info_file_name: file
  }))
  .filter(video => video.categories && video.categories.includes('Music'))
  .forEach((video, i, videos) => {
    console.log(`[${i+1}/${videos.length}] ${video.title}`);
    const { stderr } = spawnSync('youtube-dl.exe', [
      '--load-info-json', `${video.info_file_name}`,
      '--format', '140[filesize<10M]',
      '--download-archive', '%temp%/offline-mixtape.txt'
    ]);
    const err = stderr ? stderr.toString().trim() : null;
    if (err) console.log(err);
  });

console.log('\nCleaning Up...');
fs.readdirSync('.')
  .filter(file => file.endsWith('.info.json'))
  .forEach(file => fs.unlinkSync(file));

console.log('\nDone');