LingQPlaylistMediaStrategy.js

//
//  LingQPlaylistMediaStrategy.js
//  Edwin Finch
//
//  Created by Edwin on Feb 26th, 2019.
//  Copyright (c) 2015-2019 GPL v3 http://www.gnu.org/licences/gpl.html
//

BSStrategy = {
  version: 1,
  displayName: "LingQ Playlist",
  accepts: {
    method: "predicateOnTab",
    format: "%K LIKE[c] '*lingq.com/*/learn/*/web/playlist'",
    args: [
        "URL"
    ]
  },

  isPlaying: function(){
      return document.querySelector(".playlist").classList.contains("playing");
  },
  toggle: function () {
      var isPlaying = document.querySelector(".playlist").classList.contains("playing");
      document.querySelector(isPlaying ? ".pause-button" : ".play-button").click();
  },
  previous:  function () {
      document.querySelector(".rewind-button").click();
  },
  next:      function () {
      document.querySelector(".forward-button").click()
  },
  pause:     function () {
      document.querySelector(".pause-button").click();
  },
  favorite:  function () { },  //It should be spelt 'favourite', but I guess I will have to let that go.
  trackInfo: function () {
    return {
        "track": document.querySelector(".item-title").innerText,
        "album": "Playlist",
        "artist": "LingQ",
        "image": "https://scontent.fyyz1-1.fna.fbcdn.net/v/t1.0-9/12871469_10153672710498786_4059947752259266619_n.png",
        "favorited": false
    };
  }
}
// The file must have an empty line at the end.