<?php
/**
 * @method App_NotFound_Obj _getDataObj()
 */
class App_NotFound_View extends Qs_ViewController
{
    const MODE_OWN      = 1;
    const MODE_ALIEN    = 2;
    const MODE_EMPTY    = 4;
    const MODE_ALL      = 7;

    protected $_options = array('message' => null);

    protected function _execRedirection()
    {
        if (Qs_Application::getConfig('cms')->hasRedirection) {
            $obj = new App_Redirection_Obj();
            if (($redirect = $obj->getRedirect(CURRENT_PAGE))) {
                Qs_Http::redirect(BASE_URL_LANGUAGE . '/' . $redirect['destination'], $redirect['status']);
                exit;
            }
        }
        return false;
    }

    protected function _getRefererMode()
    {
        static $mode = null;
        if (null === $mode) {
            $referer = Qs_Array::get($_SERVER, 'HTTP_REFERER');
            if (empty($referer)) {
                $mode = self::MODE_EMPTY;
            } else if (Qs_Request::isOwnUrl($referer)) {
                $mode = self::MODE_OWN;
            } else {
                $mode = self::MODE_ALIEN;
            }
        }
        return $mode;
    }

    protected function _logNotFound()
    {
        $data = $this->_collectData();
        $refererMode = $this->_getRefererMode();

        $logMode = (int) $this->getConfig('logMode');
        if ($refererMode === ($refererMode & $logMode)) {
            $this->_getDataObj()->insert($data);
        }

        $notifyMode = (int) $this->getConfig('notifyMode');
        if ($refererMode === ($refererMode & $notifyMode)) {
            $mailData = $this->_getMailData($data);
            $this->_sendNotifyEmails($mailData);
        }

        $message = 'File does not exist: "' . Qs_Request::getUrl() . '" "' . $data['userAgent'] . '" '
                 . $data['ipAddress'];
        Qs_Debug::logStdError($message);

        return $this;
    }

    protected function _collectData()
    {
        $data = array();
        $data['modeId'] = $this->_getRefererMode();
        $data['isAjax'] = (Qs_Request::isXmlHttpRequest()) ? 'y' : 'n';
        $data['request'] = Qs_Array::get($_SERVER, 'REQUEST_URI', '');
        $data['referer'] = Qs_Array::get($_SERVER, 'HTTP_REFERER', '');
        $data['userAgent'] = Qs_Array::get($_SERVER, 'HTTP_USER_AGENT', '');
        $data['ipAddress'] = Qs_Array::get(
            $_SERVER,
            'REMOTE_ADDR',
            Qs_Array::get($_SERVER, 'HTTP_X_FORWARDED_FOR', '')
        );
        return $data;
    }

    protected function _getMailData($data)
    {
        $mailData = $data;
        $mailData['mode'] =  $this->_getDataObj()->getNotFoundModeTitle($data['modeId']);
        $mailData['isAjax'] = ('y' === $data['isAjax']) ? 'Yes' : 'No';
        $mailData['viewLink'] = BASE_URL . '/' . Qs_SiteMap::getAliasByItem('NotFound_Admin');
        $mailData = array_map('htmlspecialchars', $mailData);
        return $mailData;
    }

    protected function _sendNotifyEmails($data)
    {
        $emails = $this->getConfigArray('notifyEmails');
        if (!empty($emails) && is_array($emails)) {
            $settingsEmails = App_Settings_Obj::get('notFoundNotifyEmails', 'parseEmails');
            if (!empty($settingsEmails) && is_array($settingsEmails)) {
                $emails = array_merge($emails, $settingsEmails);
                $emails = array_unique($emails);
            }
        } else {
            return $this;
        }

        $template = new Qs_Template();
        $template->addConstantDataSource();
        $template->addGlobalsDataSource();
        $template->addArrayDataSource($data);

        $emailConfig = $this->getConfigArray('email');
        if (empty($emailConfig['body'])) {
            return $this;
        }

        $subject = $template->render(isset($emailConfig['subject']) ? $emailConfig['subject'] : '');
        $body = $template->render($emailConfig['body']);

        $mail = new Qs_Mail();
        $mail->setFrom(App_Settings_Obj::get('siteFrom'));
        $mail->setSubject($subject);
        $mail->setHtml($body, null, WWW_PATH);
        foreach ($emails as $email) {
            $mail->addTo($email);
        }
        return $mail->send();
    }

    public function exec()
    {
        $this->_execRedirection();
        $this->_logNotFound();
        header('HTTP/1.0 404 Not Found');
        if (!Qs_Request::isXmlHttpRequest()) {
            $this->_options['alias'] = CURRENT_PAGE;
            $this->_doc->assign('item', new Qs_Doc_Item($this->_options));
            $this->_doc->sendHeaders();
            echo $this->_doc->fetch($this->getTemplate('view.tpl'));
        }
        exit;
    }
}