Enhancements to the youtube embedder

Author: sgrove

app/assets/javascripts/backbone/plugins/youtube_embed.js.coffee

@@ -8,15 +8,32 @@ class Kandan.Plugins.YouTubeEmbed
       <a target="_blank" class="youtube-preview-link" href="<%= video_url %>">
         <img class="youtube-preview-image" src="<%= thumb_url %>" />
       </a>
+      <div class="name"><%= subtitle %></div>
     </div>
   '''
 
   @init: ()->
-    Kandan.Modifiers.register @youtube_regex, (message, state)=>
+    Kandan.Modifiers.register @youtube_regex, (message, state) =>
+      comment = null
+
+      # No spaces in message content indicates just a link
+      if message.content.indexOf(" ") == -1
+        video_url = message.content
+      else
+      # Spaces indicate a subtitle
+        comment = $.trim(message.content.substr(message.content.indexOf(" ") + 1));
+        video_url = message.content.split(" ")[0]
+
       video_id = message.content.match(@youtube_id_regex)[1]
       thumb_url = "http://img.youtube.com/vi/#{ video_id }/0.jpg"
+
+      subtitle = null
+      subtitle = "Youtube: #{comment}" if comment? and comment.length > 0
+      subtitle ||= video_url
+
       message.content = @youtube_embed_template({
-        video_url: message.content,
-        thumb_url: thumb_url
+        video_url: video_url,
+        thumb_url: thumb_url,
+        subtitle: subtitle
       })
       return Kandan.Helpers.Activities.build_from_message_template(message)