<?php

class App_Admin_Auth extends Qs_Auth
{
    /**
     * @var App_Admin_Auth
     */
    protected static $_instance;

    protected $_sessionNamespace = 'admin_auth';
    protected $_defaultBackAlias = 'admin';
    protected $_loginPageQuery = array(null, array('type' => 'Admin_Login_'));

    public static function getInstance()
    {
        if (null === self::$_instance) {
            self::$_instance = new self();
        }
        return self::$_instance;
    }

    public function getSuMode()
    {
        return (bool) $this->getSessionValue('suModeEnabled');
    }

    public function setSuMode($flag = true)
    {
        $this->setSessionValue('suModeEnabled', (bool)$flag);
    }

    public function authenticate(Zend_Auth_Adapter_Interface $adapter)
    {
        $isStorageEmpty = !$this->getStorage()->read();
        $result = parent::authenticate($adapter);
        if (!$result->isValid() || $isStorageEmpty) {
            App_Report_AdminView::refreshReportAccessFile();
            App_Application_Document_AdminView::refreshDocumentsAccessFile();
        }
        return $result;
    }
}