YouTube Playlist TVDB Data

yt-playlist-tvdb.js

// USE WITH https://greasyfork.org/en/scripts/518978-tvdb-episode-input-automation
const PLAYLIST_ID = 'ENTER A PLAYLIST ID HERE';

async function getPlaylistVideos(playlistUrl) {
  // Get playlist page
  const response = await fetch(playlistUrl);
  const html = await response.text();

  // Extract video IDs from playlist page
  const videoIds = [
    ...new Set([...html.matchAll(/"videoId":"([^"]+)"/g)].map((m) => m[1])),
  ];
  const videos = [];

  let episodeCount = 0;
  for (const videoId of videoIds) {
    episodeCount++;
    try {
      const videoData = await getVideoDetails(
        `https://www.youtube.com/watch?v=${videoId}`,
        episodeCount,
      );
      videos.push(videoData);
      // Respect YouTube's rate limiting
      await new Promise((resolve) => setTimeout(resolve, 1000));
    } catch (error) {
      console.error(`Error processing video ${videoId}:`, error);
    }
  }

  return videos;
}

async function getVideoDetails(videoUrl, fallbackEpisodeNumber) {
  const response = await fetch(videoUrl);
  const html = await response.text();

  // Extract data from ytInitialData
  const dataMatch = html.match(/ytInitialData\s*=\s*({.+?});/);
  const playerDataMatch = html.match(/ytInitialPlayerResponse\s*=\s*({.+?});/);

  if (!dataMatch || !playerDataMatch) {
    throw new Error('Could not extract video data');
  }

  const data = JSON.parse(dataMatch[1]);
  const playerData = JSON.parse(playerDataMatch[1]);

  // Get video details
  const videoDetails = playerData.videoDetails;
  const primaryInfo =
    data.contents?.twoColumnWatchNextResults?.results?.results?.contents?.[0]
      ?.videoPrimaryInfoRenderer;

  // Get episode number from title
  const episodeMatch = videoDetails.title.match(/\[(\d+)\]/);
  let episode = fallbackEpisodeNumber;
  if (!episodeMatch) {
    console.warn(
      `Could not extract episode number in: ${videoDetails.title}\n\t Falling back to: ${fallbackEpisodeNumber}`,
    );
  } else {
    episode = episodeMatch[1];
  }

  // Get formatted title
  const title = videoDetails.title.split(' |')[0].trim();

  // Get upload date from date text
  const dateText = primaryInfo?.dateText?.simpleText?.trim() || '';

  // Get description
  const description = videoDetails.shortDescription || '';
  const firstLine = description.split('\n')[0]?.trim();

  // Get length in minutes
  const lengthSeconds = parseInt(videoDetails.lengthSeconds);
  const lengthMinutes = Math.ceil(Math.round((lengthSeconds / 60) * 100) / 100);

  return {
    number: `${episode}`,
    name: title,
    overview: firstLine,
    date: convertDate(dateText),
    runtime: lengthMinutes,
  };
}

function convertDate(dateStr) {
  const date = new Date(dateStr);
  return date.toISOString().split('T')[0];
}

getPlaylistVideos(`https://www.youtube.com/playlist?list=${PLAYLIST_ID}`)
  .then((videos) => {
    console.table(videos);
    console.log(videos);
  })
  .catch((error) => console.error('Error:', error));