(function ($) {
  Drupal.behaviors.cs_facebook_comments = {
    attach: function (context, settings) {
      try {
        var timer  = setInterval(function() {
          if(typeof FB != 'undefined') {
            clearInterval(timer);

            FB.Event.subscribe('comment.create',
              function(response) {
                var commentQuery = FB.Data.query("SELECT text, fromid, time FROM comment WHERE post_fbid='"+response.commentID+"' AND object_id IN (SELECT comments_fbid FROM link_stat WHERE url='"+response.href+"')");
                var userQuery = FB.Data.query("SELECT name, profile_url FROM user WHERE uid in (select fromid from {0})", commentQuery);

                FB.Data.waitOn([commentQuery, userQuery], function() {
                  var comment = commentQuery.value[0];
                  var user = userQuery.value[0];

                  var settings = {
                    url : Drupal.settings.basePath + 'ajax/facebook/comment.create',
                    submit: {'facebook_comment': {'response': response, 'comment': comment, 'user': user}}
                  };

                  var ajax = new Drupal.ajax(false, this, settings);
                  ajax.eventResponse(ajax, {});
                });
              }
            );
          }
        }, 10);

      } catch(e) { if('console' in window) console.error(e); }
    }
  };
}(jQuery));