youtube: get width and height too

youtube.js

@@ -44,19 +44,40 @@ class YouTube extends SongProvider {
 							var ytPlayerResponse = JSON.parse(match[1]);
 						} catch(e) {
 							cb('Could not parse JSON YouTube data for'+url);
+							return;
 						}
-						if(ytPlayerResponse && ytPlayerResponse.videoDetails) {
+
+						if(!ytPlayerResponse) {
+							cb('Unrecognized YouTube data for '+url);
+							return;
+						}
+
+						let width = null, height = null;
+						if(ytPlayerResponse.streamingData && ytPlayerResponse.streamingData.formats) {
+							for(let format of ytPlayerResponse.streamingData.formats) {
+								if(format.width > width || width === null) {
+									width = format.width;
+									height = format.height;
+								}
+							}
+						}
+
+						if(ytPlayerResponse.videoDetails) {
 							var ret = {
 								platform: 'youtube',
 								url: url,
 								title: ytPlayerResponse.videoDetails.title,
 								thumbnail: ytPlayerResponse.videoDetails.thumbnail && ytPlayerResponse.videoDetails.thumbnail.thumbnails && ytPlayerResponse.videoDetails.thumbnail.thumbnails[0].url || null,
-								duration: ytPlayerResponse.videoDetails.lengthSeconds,
+								duration: parseInt(ytPlayerResponse.videoDetails.lengthSeconds),
 								author: ytPlayerResponse.videoDetails.author,
+								author_url: 'https://www.youtube.com/channel/'+ytPlayerResponse.videoDetails.channelId,
+								description: ytPlayerResponse.videoDetails.shortDescription,
+								width: width,
+								height: height,
 								views: parseInt(ytPlayerResponse.videoDetails.viewCount),
 							};
 							cb(null, ret);
-						} else cb('Unrecognized YouTube data for '+url);
+						}
 					} else {
 						cb('Could not parse YouTube data for '+url);
 					}