Sweepstakes Workflow with Facebook Auth Dialog Box?

            private function setupPageTab()
    {
        $app =& JFactory::getApplication();
        $jSession =& JFactory::getSession();

        // First, check if reveal page is setup
        $pageInfo = $jSession->get('jfbcCanvasPageInfo');
        $revealPage = $this->configModel->getSetting('canvas_tab_reveal_article_id', '');
        if ($revealPage && !$pageInfo['liked'] && ((JRequest::getCmd('option') != 'com_content') || (JRequest::getCmd('view') != 'article') ||
                (JRequest::getInt('id') != $revealPage))
        )
        {
            $uri =& JURI::getInstance();
            $uri->delVar('jfbcCanvasBreakout');
            $jSession->set('jfbcCanvasOrigDestination', $uri->toString());
            $app->redirect('index.php?option=com_content&view=article&tmpl=component&id=' . $revealPage);
        }
        else

        {
            // Get Current Users Joomla ID            
            $user =& JFactory::getUser();        

            // Search Database for Joomla Users ID
            $db = JFactory::getDbo();
            $query = $db->getQuery(true);
            $query->select('user_id');
            $query->from('sweepDB');
            $query->where('user_id = ' . $user->id);
            $db->setQuery($query);
            $result = $db->loadResult();            

            // Try to Match User ID & Redirect 
            if ($result && ((JRequest::getCmd('option') != 'com_content') || (JRequest::getCmd('view') != 'article') || (JRequest::getInt('id') != 'XXX'))
                    $uri =& JURI::getInstance(); 
                { 
                    $uri =& JURI::getInstance(); 
                    $uri->delVar('jfbcCanvasBreakout'); 
                    $jSession->set('jfbcCanvasOrigDestination', $uri->toString()); 
                    $app->redirect('index.php?option=com_content&Itemid=XXX&id=XXX&lang=en&view=article');             
                }                  

            // User ID Not Found 
            else 
                {                
                $tabTemplate = $this->configModel->getSetting('canvas_tab_template'); 
                $this->setTemplate($tabTemplate); 
                } 
        }
    }