Random data

random-data.js

const audioData = [
  {
    artist: `Kevin MacLeod`,
    name: `Long Stroll`,
    image: `https://yt3.ggpht.com/-fkDeGauT7Co/AAAAAAAAAAI/AAAAAAAAAAA/dkF5ZKkrxRo/s900-c-k-no-mo-rj-c0xffffff/photo.jpg`,
    src: `https://www.youtube.com/audiolibrary_download?vid=91624fdc22fc54ed`,
    genre: `Jazz`
  },
  {
    artist: `Jingle Punks`,
    name: `In the Land of Rhinoplasty`,
    image: `https://i.vimeocdn.com/portrait/992615_300x300`,
    src: `https://www.youtube.com/audiolibrary_download?vid=dc3b4dc549becd6b`,
    genre: `Rock`
  },
  {
    artist: `Audionautix`,
    name: `Travel Light`,
    image: `http://4.bp.blogspot.com/-kft9qu5ET6U/VPFUBi9W-MI/AAAAAAAACYM/UxXilXKYwOc/s1600/audionautix%2BHalf%2BSize.jpg`,
    src: `https://www.youtube.com/audiolibrary_download?vid=a127d9b7de8a17cf`,
    genre: `Country`
  },
  {
    artist: `Riot`,
    name: `Level Plane`,
    image: `https://i.ytimg.com/vi/jzgM3m8Vp1k/maxresdefault.jpg`,
    src: `https://www.youtube.com/audiolibrary_download?vid=dfb828f40096184c`,
    genre: `R&B`
  },
  {
    artist: `Jingle Punks`,
    name: `Lucky Day`,
    image: `https://i.vimeocdn.com/portrait/992615_300x300`,
    src: `https://www.youtube.com/audiolibrary_download?vid=bcbe5be936a32fb1`,
    genre: `Pop`
  },
  {
    artist: `Gunnar Olsen`,
    name: `Home Stretch`,
    image: `https://f4.bcbits.com/img/0004181452_10.jpg`,
    src: `https://www.youtube.com/audiolibrary_download?vid=bcbe5be936a32fb1`,
    genre: `Electronic`
  }
];


const getRandomDataSequence = (n, data) => {
  const tmpTracks = data.slice();
  const currentTracks = Array.from({length: n}, () => {
    const index = Math.floor(Math.random() * tmpTracks.length);
    return tmpTracks.splice(index, 1)[0];
  });
  return currentTracks;
};

const SongsLength = {
  ARTIST: 3,
  GENRE: 4
};
const getWtff = (data) => {
  const artistQuestions = [];
  const genreQuestions = [];
  for (let i = 0, l = data.length; i < l - 1; i++) {
    const currData = data[i];
    artistQuestions.push({
      rightAnswer: currData.artist,
      songSrc: currData.src,
      songs: getRandomDataSequence(SongsLength.ARTIST, data)
    });
    genreQuestions.push({
      rightAnswer: currData.name,
      genre: currData.genre,
      songs:getRandomDataSequence(SongsLength.GENRE, data)
    });
  }
  return {artistQuestions, genreQuestions};
};