YouTube.js/lib/parser/contents/classes/PlayerStoryboardSpec.js

'use strict';

class PlayerStoryboardSpec {
  type = 'playerStoryboardSpecRenderer';
  
  constructor(data) {
    const parts = data.spec.split('|');
    const url = new URL(parts.shift());
    
    this.boards = parts.map((part, i) => {
      let [
        thumbnail_width,
        thumbnail_height,
        thumbnail_count,
        columns,
        rows,
        interval,
        name,
        sigh,
      ] = part.split('#');
      
      url.searchParams.set('sigh', sigh);

      thumbnail_count = parseInt(thumbnail_count, 10);
      columns = parseInt(columns, 10);
      rows = parseInt(rows, 10);

      const storyboard_count = Math.ceil(thumbnail_count / (columns * rows));

      return {
        template_url: url.toString().replace('$L', i).replace('$N', name),
        thumbnail_width: parseInt(thumbnail_width, 10),
        thumbnail_height: parseInt(thumbnail_height, 10),
        thumbnail_count,
        interval: parseInt(interval, 10),
        columns,
        rows,
        storyboard_count,
      };
    });
  }
}

module.exports = PlayerStoryboardSpec;