Fix extractor for YouTube

patch.extractor.youtube.extract.tbrl.js

// ==Taberareloo==
// {
//   "name"        : "Fix extractor for YouTube"
// , "description" : "Fix extractor for YouTube"
// , "include"     : ["content"]
// , "match"       : ["*://*.youtube.com/watch*"]
// , "version"     : "0.2.0"
// , "downloadURL" : "https://gist.githubusercontent.com/ailispaw/0b8eef48ffa07a9ef56a/raw/patch.extractor.youtube.extract.tbrl.js"
// }
// ==/Taberareloo==

(function() {
  addAround(Extractors['Video - YouTube'], 'extract', function (proceed, args, target, methodName) {
    var ctx = args[0];
    // not use @rel="author"
    // because official channel use banner image, can't get author text information by textContent.
    var author = ctx.document.querySelector('#owner-name a');
    var title = ctx.document.querySelector('#player a.ytp-title-link');

    ctx.title = ctx.title.replace(/[\n\r\t]+/gm, ' ').trim();

    var ps = {
      type      : 'video',
      item      : title.textContent.trim(),
      itemUrl   : title.href,
      author    : author.textContent.trim(),
      authorUrl : author.href
    };

    var canonical = $X('//link[@rel="canonical"]')[0];
    if (canonical) {
      canonical.parentNode.removeChild(canonical);
    }

    return ps;
  });
})();