Habari\AdminHandler::__construct PHP Method

    public function __construct()
    {
        $user = User::identify();
        if (!$user->loggedin) {
            Session::add_to_set('login', $_SERVER['REQUEST_URI'], 'original');
            if (URL::get_matched_rule()->action == 'admin_ajax' && isset($_SERVER['HTTP_REFERER'])) {
                $ar = new AjaxResponse(408, _t('Your session has ended, please log in and try again.'));
                $ar->out();
            } else {
                $post_raw = $_POST->get_array_copy_raw();
                if (!empty($post_raw)) {
                    Session::add_to_set('last_form_data', $post_raw, 'post');
                    Session::error(_t('We saved the last form you posted. Log back in to continue its submission.'), 'expired_form_submission');
                }
                $get_raw = $_GET->get_array_copy_raw();
                if (!empty($get_raw)) {
                    Session::add_to_set('last_form_data', $get_raw, 'get');
                    Session::error(_t('We saved the last form you posted. Log back in to continue its submission.'), 'expired_form_submission');
                }
                Utils::redirect(URL::get('auth', array('page' => 'login')));
            }
            exit;
        }
        $last_form_data = Session::get_set('last_form_data');
        // This was saved in the "if ( !$user )" above, UserHandler transferred it properly.
        /* At this point, Controller has not created handler_vars, so we have to modify $_POST/$_GET. */
        if (isset($last_form_data['post'])) {
            $_POST = $_POST->merge($last_form_data['post']);
            $_SERVER['REQUEST_METHOD'] = 'POST';
            // This will trigger the proper act_admin switches.
            Session::remove_error('expired_form_submission');
        }
        if (isset($last_form_data['get'])) {
            $_GET = $_GET->merge($last_form_data['get']);
            Session::remove_error('expired_form_submission');
            // No need to change REQUEST_METHOD since GET is the default.
        }
        $user->remember();
        // Create an instance of the active public theme so that its plugin functions are implemented
        $this->active_theme = Themes::create();
        // on every page load check the plugins currently loaded against the list we last checked for updates and trigger a cron if we need to
        Update::check_plugins();
    }