added all the functions to the library object

musicLibraryPart2

var 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 (this) {
              var play = this.playlists;
              for (var key in play) {
                var p = play[key];
                console.log(p.id, ':', p.name,'-', p.tracks.length, 'tracks');
              }
           },

  printTracks : function (library) {
    var track = library.tracks;
    for (var key in track) {
      var t = track[key];
      console.log(t.id, ':', t.name, 'by', t.artist, '(', t.album, ')');
    }

  },

  printPlaylist  function (playlistId) {
    var output = {};
    var playlist = library.playlists[playlistId];

    if (playlistId === playlist.id) {
      console.log(playlistId, ':', playlist.name,'-', playlist.tracks.length, 'tracks');

    }
    for (var key in playlist.tracks) {
      var trackid = playlist.tracks[key];
      var track =  library.tracks[trackid];
      console.log(track.id, ':', track.name, 'by', track.artist, '(', track.album, ')');

    }
  },
  printPlaylist: function (playlistId) {
    var output = {};
    var playlist = library.playlists[playlistId];

    if (playlistId === playlist.id) {
      console.log(playlistId, ':', playlist.name,'-', playlist.tracks.length, 'tracks');

    }
    for (var key in playlist.tracks) {
      var trackid = playlist.tracks[key];
      var track =  library.tracks[trackid];
      console.log(track.id, ':', track.name, 'by', track.artist, '(', track.album, ')');

    }
  },
  addTrackToPlaylist: function (trackId, playlistId) {
    var tracksOfPlaylistId = library.playlists[playlistId].tracks;
    tracksOfPlaylistId.push(trackId);
    console.log(tracksOfPlaylistId);
  },
  uid: function() {
    return Math.floor((1 + Math.random()) * 0x10000).toString(16).substring(1);
  },
  addTrack: function (name, artist, album) {
    var generatedId = uid();
    var newTrack = { id: generatedId,
                     name: name,
                     artist: artist,
                     album: album };
    library["tracks"][generatedId] = newTrack;
    console.log(library.tracks[generatedId]);
  },
  addPlaylist: function (name) {
    var generatedId = uid();
    var newPlaylist = { id: generatedId,
                        name: name,
                      };
    library.playlists[generatedId] = newPlaylist;
    console.log(library.playlists[generatedId])
  }
}


var printSearchResults = function(query) {

}