Adds full support for YouTube playback.

While a few optimizations could be made, YouTube playback is almost as seamless as local playback.

add-on/youtube.js

@@ -3,26 +3,51 @@ var video;
 
 function onload()
 {
-    video = document.getElementsByClassName('video-stream html5-main-video')[0]
+    video = document.getElementsByClassName('video-stream html5-main-video')[0];
+    statusUpdate = e => {
+        return onStatusUpdate(getState(), e.srcElement.currentTime, getSongData());
+    };
+//    video.addListener("timeupdate", statusUpdate);
+//    video.addListener("play", statusUpdate);
+//    video.addListener("pause", statusUpdate);
+//    video.addListener("ended", statusUpdate);
+    video.ontimeupdate = statusUpdate;
+    video.onplay = statusUpdate;
+    video.onpause = statusUpdate;
+    video.onended = statusUpdate;
+}
+
+function getSongData()
+{
+    return {
+        type: "edu.regis.universeplayer.browser.InternetSong",
+        location: "window.location.href",
+        title: getTitle(),
+        artists: getArtists(),
+        trackNum: 0,
+        discNum: 0,
+        duration: parseInt(getLength() * 1000),
+        album: null
+    }
 }
 
 function getState()
 {
     if (!video)
     {
-        return 4;
+        return "EMPTY";
     }
     else if (video.ended)
     {
-        return 3;
+        return "FINISHED";
     }
     else if (video.paused)
     {
-        return 1;
+        return "PAUSED";
     }
     else
     {
-        return 0;
+        return "PLAYING";
     }
 }
 
@@ -36,6 +61,16 @@ function getLength()
     return video.duration;
 }
 
+function getTitle()
+{
+    return document.getElementsByTagName("meta").title.content;
+}
+
+function getArtists()
+{
+    return [document.getElementById("channel-name").getElementsByTagName("a")[0].text];
+}
+
 function play()
 {
     if (video != null)