Music Library Exercise

library.js

const library = {
  tracks: { t01: { id: "t01",
    name: "Code Monkey",
    artist: "Jonathan Coulton",
    album: "Thing a Week Three" },
  t02: { id: "t02",
    name: "Model View Controller",
    artist: "James Dempsey",
    album: "WWDC 2003"},
  t03: { id: "t03",
    name: "Four Thirty-Three",
    artist: "John Cage",
    album: "Woodstock 1952"}
  },
  playlists: { p01: { id: "p01",
    name: "Coding Music",
    tracks: ["t01", "t02"]
  },
  p02: { id: "p02",
    name: "Other Playlist",
    tracks: ["t03"]
  }
  },
  printPlaylists: function() {
    for (const playlist in this.playlists) {
      const pName = this.playlists[playlist].name;
      const trackCount = this.playlists[playlist].tracks.length;
      console.log(`${playlist}: ${pName} - ${trackCount} tracks`)
    }
  }, 
  printTracks: function() {
    for (let item in this['tracks']) {
      let trackID = this['tracks'][item]['id'];
      let trackName = this['tracks'][item]['name'];
      let trackArtist = this['tracks'][item]['artist'];
      let trackAlbum = this['tracks'][item]['album'];
      console.log(`${trackID}: ${trackName} by ${trackArtist} (${trackAlbum})`);
    }
  }, 
  printPlaylistTracks : function(trackID) {
    for (let item in this['tracks']) {
      let trackID = this['tracks'][item]['id'];
      let trackName = this['tracks'][item]['name'];
      let trackArtist = this['tracks'][item]['artist'];
      let trackAlbum = this['tracks'][item]['album'];
      console.log(`${trackID}: ${trackName} by ${trackArtist} (${trackAlbum})`);
    }
  },
  printPlaylist : function(playlistId) {
    for (let pList in this['playlists']) {
      if (pList === playlistId) {
        let pLName = this['playlists'][playlistId]['name'];
        let pLLength = this['playlists'][playlistId]['tracks'].length;
        console.log(`${playlistId}: ${pLName} - ${pLLength} tracks`);
  
        for (let track of this['playlists'][playlistId]['tracks']) {
          let trackName = this['tracks'][track]['name'];
          let trackArtist = this['tracks'][track]['artist'];
          let trackAlbum = this['tracks'][track]['album'];
          console.log(`${track}: ${trackName} by ${trackArtist} (${trackAlbum})`);
        }
      }
    }
  }, 
  addTrackToPlaylist : function(trackId, playlistId) {
    this['playlists'][playlistId]['tracks'].push(trackId);
  },
  generateUid : function() {
    return Math.floor((1 + Math.random()) * 0x10000).toString(16).substring(1);
  }, 
  addTrack : function(name, artist, album) {
    // let trackID = generateUid();
    let trackID = "p09";
    this['tracks'][trackID] = {id: trackID, name: name, artist: artist, album: album};
  }, 
  addPlaylist : function(name) {
    // let playlistId = generateUid();
    let playlistId = "p03";
    this['playlists'][playlistId] = {id: playlistId, name: name, tracks: []};
  },
  printSearchResults : function(query) {
    const searchResults = {};
    for (let trackID in this['tracks']) {
      const trackNameLower = this.tracks[trackID]['name'].toLowerCase();
      const artistNameLower = this.tracks[trackID]['artist'].toLowerCase();
      const albumNameLower = this.tracks[trackID]['album'].toLowerCase();
      let trackName = this.tracks[trackID]['name'];
      let trackArtist = this['tracks'][trackID]['artist'];
      let trackAlbum = this['tracks'][trackID]['album'];
  
      if (trackNameLower.search(query.toLowerCase()) !== -1) {
        searchResults[trackID] = {id: trackID, name: trackName, artist: trackArtist, album: trackAlbum, "Search Hit" : "Track Name"};
      }
  
      if (artistNameLower.search(query.toLowerCase()) !== -1) {
        searchResults[trackID] = {id: trackID, name: trackName, artist: trackArtist, album: trackAlbum, "Search Hit" : "Artist Name"};
      }
  
      if (albumNameLower.search(query.toLowerCase()) !== -1) {
        searchResults[trackID] = {id: trackID, name: trackName, artist: trackArtist, album: trackAlbum, "Search Hit" : "Album Name"};
      }
    }
    console.log("Search Results:");
    console.log(searchResults);
    return searchResults;
  }
};

library.printTracks();
library.addTrack("Wandering Souls", "Tom Budin", "Wondering Souls - Single");
library.printSearchResults("Budin");