<?php

namespace App\User;

use Zend_Auth_Adapter_Interface;
use Zend_Auth_Result;
use Zend_Session;
use Qs_Auth_Adapter_DbTable;
use Qs_Auth;
use Qs_SiteMap;
use Qs_Translate;
use App_ECommerce_Checkout_View as CheckoutView;
use App_ECommerce_Cart_Obj as CartObj;

class Auth extends Qs_Auth
{
    const ERROR_INVALID_CREDENTIALS = 'errInvalidCredentials';
    const ERROR_NOT_APPROVED        = 'errAccountNotApproved';
    const ERROR_ACCOUNT_NOT_ACTIVE  = 'errAccountNotActive';

    /** @var \App\User\Auth */
    protected static $_instance;

    protected $_sessionNamespace = 'user_auth';
    protected $_defaultBackPageQuery = array(array('handler' => 'user'), null, array('placeholders' => 'User\\'));
    protected $_loginPageQuery = array(null, array('type' => 'User\\Login\\'));
    protected $_role = 'user';

    protected $_errorMessages = array(
        self::ERROR_INVALID_CREDENTIALS => 'Invalid Email Address or Password',
        self::ERROR_NOT_APPROVED        => 'Your account is not approved yet',
        self::ERROR_ACCOUNT_NOT_ACTIVE  => 'Your account is not active',
    );

    /**
     * Return auth object
     * @return \App\User\Auth
     */
    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 initECommerce()
    {
        if (Qs_SiteMap::getAliasByItem('ECommerce_Cart_')) {
            $checkoutView = new CheckoutView();
            $checkoutView->unsetUserDataFromSession();

            $cartObj = new CartObj();
            $cartObj->setPrimaryKey($cartObj->getCartId());
            $cartObj->mergeCart();
        }
        return $this;
    }

    /**
     * @param Zend_Auth_Adapter_Interface|Qs_Auth_Adapter_DbTable $adapter
     * @return Zend_Auth_Result
     */
    public function authenticate(Zend_Auth_Adapter_Interface $adapter)
    {
        $result = parent::authenticate($adapter);

        if ($result->isValid()) {
            $messages = [];
            if (null === $this->getData('status')) {
                $messages = [$this->_createMessage(self::ERROR_NOT_APPROVED)];
            } elseif (Entity::STATUS_ACTIVE != $this->getData('status')) {
                $messages = [$this->_createMessage(self::ERROR_ACCOUNT_NOT_ACTIVE)];
            }
            if ($messages) {
                $identity = $this->getIdentity();
                if (isset($identity['autologinCode'])) {
                    $adapter->clearAutologinCode($identity['autologinCode']);
                }
                $this->clearIdentity();
                $result = new Zend_Auth_Result(Zend_Auth_Result::FAILURE_UNCATEGORIZED, null, $messages);
                if (Qs_SiteMap::getAliasByItem('ECommerce_Cart_')) {
                    $cartObj = new CartObj();
                    $cartObj->clearSessionCartObject();
                }
                foreach (Zend_Session::getIterator() as $namespace) {
                    Zend_Session::namespaceUnset($namespace);
                }
            }
        } else {
            $code = $result->getCode();
            $identity = $result->getIdentity();
            $messages = [$this->_createMessage(self::ERROR_INVALID_CREDENTIALS)];
            $result = new Zend_Auth_Result($code, $identity, $messages);
        }

        return $result;
    }

    protected function _createMessage($messageKey)
    {
        if (isset($this->_errorMessages[$messageKey])) {
            return Qs_Translate::translate($this->_errorMessages[$messageKey], 'user');
        }
        return null;
    }
}