add support for search by artist

iresults.js

@@ -7,6 +7,7 @@
 require.paths.unshift(require('path').join(__dirname,'./util'));
 
 var Album = require('album').Album;
+var Artist = require('artist').Artist;
 var Track = require('track').Track;
 
 //Track total and completed instances of the class for debugging purposes.
@@ -84,6 +85,24 @@ iResults.prototype.getAlbum = function() {
     return album;
 };
 
+
+/*
+ Extracts a few items from the iTunes results for an artist search and returns them in an object.
+ */
+iResults.prototype.getArtist = function() {
+    var artist = '';
+    if (this.data.wrapperType == 'artist') {
+        var artist = new Artist(this.data.artistLinkUrl,
+                              this.data.amgArtistId,
+                              this.data.artistId,
+                              this.data.artistName);
+    } else {
+    }
+    return artist;
+};
+
+
+
 /*
  Extracts a few items from the iTunes results for an album search and returns them in an object.
  */

itunes.js

@@ -103,6 +103,16 @@ iTunes.prototype.responseEnd = function(dataType, results, callback) {
                 error = 1;
             } else {
                 data = results.getAlbum();
+                console.dir(results);
+            };
+            break;
+        case 'artist':
+            if (results.hits > 1) {
+                error = 1;
+            } else if ( results.hits == 0)  {
+                error = 1;
+            } else {
+                data = results.getArtist();
             };
             break;
         case 'track':
@@ -143,6 +153,16 @@ iTunes.prototype.lookupAlbum = function(params, callback) {
     self.request('album',callback);
 };
 
+iTunes.prototype.lookupArtist = function(params, callback) {
+    var self = this;
+    var artist = params.artist;
+    self.params.media='music';
+    self.params.entity='musicArtist';
+    self.params.attribute='artistTerm';
+    self.params.term=artist;
+    self.request('artist',callback);
+};
+
 iTunes.prototype.lookupTrack = function(params, callback) {
     var self = this;
     var artist = params.artist;