Move YT related functions from player to youtube script

src/player.js

@@ -1,8 +1,6 @@
 const { Gdk, Gio, GObject, Gst, GstClapper, Gtk } = imports.gi;
 const ByteArray = imports.byteArray;
-const Dash = imports.src.dash;
 const Debug = imports.src.debug;
-const FileOps = imports.src.fileOps;
 const Misc = imports.src.misc;
 const YouTube = imports.src.youtube;
 const { PlayerBase } = imports.src.playerBase;
@@ -53,8 +51,14 @@ class ClapperPlayer extends PlayerBase
             if(!isYouTubeUri)
                 return super.set_uri(uri);
 
-            this.getYouTubeUriAsync(videoId)
+            if(!this.ytClient)
-                .then(ytUri => super.set_uri(ytUri))
+                this.ytClient = new YouTube.YouTubeClient();
+
+            this.ytClient.getPlaybackDataAsync(videoId)
+                .then(data => {
+                    this.customVideoTitle = data.title;
+                    super.set_uri(data.uri);
+                })
                 .catch(debug);
 
             return;
@@ -76,48 +80,6 @@ class ClapperPlayer extends PlayerBase
         super.set_uri(uri);
     }
 
-    async getYouTubeUriAsync(videoId)
-    {
-        if(!this.ytClient)
-            this.ytClient = new YouTube.YouTubeClient();
-
-        const info = await this.ytClient.getVideoInfoPromise(videoId).catch(debug);
-
-        if(!info)
-            throw new Error('no YouTube video info');
-
-        let videoUri = null;
-        const dashInfo = await this.ytClient.getDashInfoAsync(info).catch(debug);
-
-        if(dashInfo) {
-            debug('parsed video info to dash info');
-            const dash = Dash.generateDash(dashInfo);
-
-            if(dash) {
-                debug('got dash');
-
-                const dashFile = await FileOps.saveFilePromise(
-                    'tmp', null, 'clapper.mpd', dash
-                ).catch(debug);
-
-                if(dashFile)
-                    videoUri = dashFile.get_uri();
-            }
-        }
-
-        if(!videoUri)
-            videoUri = this.ytClient.getBestCombinedUri(info);
-
-        if(!videoUri)
-            throw new Error('no YouTube video URI');
-
-        this.customVideoTitle = (info.videoDetails && info.videoDetails.title)
-            ? Misc.decodeURIPlus(info.videoDetails.title)
-            : videoId;
-
-        return videoUri;
-    }
-
     load_playlist_file(file)
     {
         const stream = new Gio.DataInputStream({

src/youtube.js

@@ -1,4 +1,5 @@
 const { GObject, Gst, Soup } = imports.gi;
+const Dash = imports.src.dash;
 const Debug = imports.src.debug;
 const FileOps = imports.src.fileOps;
 const Misc = imports.src.misc;
@@ -302,6 +303,51 @@ var YouTubeClient = GObject.registerClass({
         });
     }
 
+    async getPlaybackDataAsync(videoId)
+    {
+        const info = await this.getVideoInfoPromise(videoId).catch(debug);
+
+        if(!info)
+            throw new Error('no YouTube video info');
+
+        let uri = null;
+        const dashInfo = await this.getDashInfoAsync(info).catch(debug);
+
+        if(dashInfo) {
+            debug('parsed video info to dash info');
+            const dash = Dash.generateDash(dashInfo);
+
+            if(dash) {
+                debug('got dash data');
+
+                const dashFile = await FileOps.saveFilePromise(
+                    'tmp', null, 'clapper.mpd', dash
+                ).catch(debug);
+
+                if(dashFile)
+                    uri = dashFile.get_uri();
+
+                debug('got dash file');
+            }
+        }
+
+        if(!uri)
+            uri = this.ytClient.getBestCombinedUri(info);
+
+        if(!uri)
+            throw new Error('no YouTube video URI');
+
+        debug(`final URI: ${uri}`);
+
+        const title = (info.videoDetails && info.videoDetails.title)
+            ? Misc.decodeURIPlus(info.videoDetails.title)
+            : videoId;
+
+        debug(`title: ${title}`);
+
+        return { uri, title };
+    }
+
     async getDashInfoAsync(info)
     {
         if(