public static function load($tpl, $css_files = array(), $js_files = array())
 {
     \CODOF\Util::inc_global_views();
     //This sets all variables which will be used by the theme
     require CURR_THEME_PATH . 'theme.php';
     $page = array();
     \CODOF\Hook::call('before_site_head');
     \CODOF\Hook::call('tpl_before_' . str_replace("/", "_", $tpl));
     $asset = new \CODOF\Asset\Stream();
     $page["head"]["css"] = $asset->dumpCSS();
     //\CODOF\Theme\Js::sort_js();
     $page["head"]["js"] = $asset->dumpJS('head');
     $page["body"]["js"] = $asset->dumpJS('body');
     $page["defer"] = json_encode($asset->deferred());
     //after all modification its time for smarty to display the mod data
     $smarty = Single::get_instance();
     $site_title = \CODOF\Util::get_opt('site_title');
     $sub_title = \CODOF\Store::get('sub_title');
     $smarty->assign('site_title', $site_title);
     $smarty->assign('sub_title', $sub_title);
     $smarty->assign('home_title', \CODOF\Store::get('home_title', _t('All topics')));
     $smarty->assign('site_url', \CODOF\Util::get_opt('site_url'));
     $smarty->assign('logged_in', \CODOF\User\CurrentUser\CurrentUser::loggedIn());
     $smarty->assign('login_url', \CODOF\User\User::getLoginUrl());
     $smarty->assign('logout_url', \CODOF\User\User::getLogoutUrl());
     $smarty->assign('register_url', \CODOF\User\User::getRegisterUrl());
     $smarty->assign('profile_url', \CODOF\User\User::getProfileUrl());
     $smarty->assign('page', $page);
     $smarty->assign('CSRF_token', \CODOF\Access\CSRF::get_token());
     $smarty->assign('php_time_now', time());
     $category = new \CODOF\Forum\Category();
     $canCreateTopicInAtleastOneCategory = $category->canCreateTopicInAtleastOne();
     $smarty->assign('canCreateTopicInAtleastOneCategory', $canCreateTopicInAtleastOneCategory);
     $page = \CODOF\Store::get('rel:canonical_page', isset($_GET['u']) ? $_GET['u'] : '');
     $smarty->assign('canonical', rtrim(RURI, '/') . strip_tags($page));
     if (\CODOF\Store::has('rel:prev')) {
         $smarty->assign('rel_prev', \CODOF\Store::get('rel:prev'));
     }
     if (\CODOF\Store::has('rel:next')) {
         $smarty->assign('rel_next', \CODOF\Store::get('rel:next'));
     }
     if (\CODOF\Store::has('meta:robots')) {
         $smarty->assign('meta_robots', \CODOF\Store::get('meta:robots'));
     }
     $og = array("type" => \CODOF\Store::get('og:type', 'website'), "title" => \CODOF\Store::get('og:title', $sub_title . ' | ' . $site_title));
     if (\CODOF\Store::has('og:url')) {
         $og['url'] = \CODOF\Store::get('og:url');
     }
     if (\CODOF\Store::has('og:desc')) {
         $og['desc'] = \CODOF\Store::get('og:desc');
     } else {
         $og['desc'] = \CODOF\Util::get_opt('site_description');
     }
     if (\CODOF\Store::has('og:image')) {
         $og['image'] = \CODOF\Store::get('og:image');
     }
     $smarty->assign('og', $og);
     if (\CODOF\Store::has('article:published')) {
         $smarty->assign('article_published', \CODOF\Store::get('article:published'));
     }
     if (\CODOF\Store::has('article:modified')) {
         $smarty->assign('article_modified', \CODOF\Store::get('article:modified'));
     }
     $I = \CODOF\User\User::get();
     //current user details
     $smarty->assign('I', $I);
     $smarty->assign('can_moderate_posts', $I->can('moderate posts'));
     if (\CODOF\User\CurrentUser\CurrentUser::loggedIn()) {
         $notifier = new \CODOF\Forum\Notification\Notifier();
         $smarty->assign('unread_notifications', $notifier->getNoOfUnread());
     }
     $html = $smarty->fetch("{$tpl}.tpl");
     require_once SYSPATH . 'Ext/simplehtmldom/simple_html_dom.php';
     $dom = new \simple_html_dom();
     $dom->load($html, true, false);
     //let plugins modify html
     \CODOF\Hook::call('tpl_after_' . str_replace("/", "_", $tpl), $dom);
     \CODOF\Hook::call('after_site_head', $dom);
     echo $dom->save();
 }