<?php
/**
 * @package DJ-Catalog2
 * @copyright Copyright (C) DJ-Extensions.com, All rights reserved.
 * @license http://www.gnu.org/licenses GNU/GPL
 * @author url: http://dj-extensions.com
 * @author email contact@dj-extensions.com
 */
defined('_JEXEC') or die('Restricted access');

class DJCatalog2HelperMailer
{

    public static function prepare(&$data, $template)
    {
        $template->body = self::parseTemplate($data, $template);
        $template->subject = self::parseSubject($data, $template);

        $data['message'] = $template->body;
        $data['subject'] = $template->subject;
    }

    public static function send(&$data, $template, $CC = array(), $BCC = array(), $replyTo = null, $tracking = false)
    {
        $app = JFActory::getApplication();

        if ($tracking) {
            $trackingID = $data['notification_id'];
            $trackingCode = base64_encode($data['sent_time']);
            $pixel = '<img width="1" height="1" alt="Pixel" src="' . JUri::root(false) . 'index.php?option=com_djcatalog2&task=pixelMsg&pixel=' . $trackingID . '&code=' . $trackingCode . '&file=pixel.jpg" />';
            $template->body = str_replace('</body>', $pixel . '</body>', $template->body);
        }

        $mailfrom = $app->getCfg('mailfrom');
        $fromname = $app->getCfg('fromname');

        $mail = JFactory::getMailer();

        $mail->addRecipient($data['recipient_email']);
        $mail->setSender(array(
            $mailfrom,
            $fromname
        ));

        if ($replyTo) {
            $mail->addReplyTo($replyTo);
        }

        $mail->setSubject($template->subject);
        $mail->setBody($template->body);
        $mail->isHtml(true);

        if (is_array($CC) && count($CC) > 0) {
            foreach ($CC as $mailCC) {
                $mail->addCC($mailCC);
            }
        }

        if (is_array($BCC) && count($BCC) > 0) {
            foreach ($BCC as $mailBCC) {
                $mail->addBCC($mailBCC);
            }
        }

        $attachments = DJCatalog2HelperAttachment::getFiles($data);

        if (is_array($attachments) && count($attachments) > 0) {
            foreach ($attachments as $file) {
                $mail->addAttachment(JPath::clean(JPATH_ROOT . '/' . $file['fullpath']), $file['name']);
            }
        }

        $templateAttachments = (!empty($template->attachments) && $template->attachments != '{}' && $template->attachments != '[]') ? json_decode((string)$template->attachments, true) : false;

        if (!empty($templateAttachments)) {
            foreach ($templateAttachments as $file) {
                if (JFile::exists(JPath::clean(JPATH_ROOT . '/' . $file['fullpath']))) {
                    $mail->addAttachment(JPath::clean(JPATH_ROOT . '/' . $file['fullpath']), $file['fullname']);
                }
            }
        }

        try {
            $ret = $mail->Send();
            return $ret;
        } catch (Exception $exception) {
            $app->enqueueMessage($exception->getMessage(), 'warning');
            return 0;
        }

    }

    protected static function parseTemplate($data, $template)
    {
        $body = (string)$template->body;

        $juri = str_replace('/administrator', '', JUri::base(false));

        foreach ($data as $key => $value) {
            if (is_object($value) || is_array($value)) continue;
            $body = \Joomla\String\StringHelper::str_ireplace('[[' . $key . ']]', $value, $body);
        }

        $body = preg_replace('#(href|src)="([^:"]*)("|(?:(?:%20|\s|\+)[^"]*"))#', '$1="' . $juri . '$2$3', $body);

        return self::addStyles($body);
    }

    protected static function parseSubject($data, $template)
    {
        $subject = $template->subject;
        if (trim((string)$subject) == '') {
            $subject = $data['subject'];
        }

        foreach ($data as $key => $value) {
            $subject = \Joomla\String\StringHelper::str_ireplace('[[' . $key . ']]', $value, $subject);
        }

        return $subject;
    }

    protected static function addStyles($body)
    {
        require_once JPATH_ROOT . '/components/com_djcatalog2/assets/emogrifier/Emogrifier.php';

        $params = JComponentHelper::getParams('com_djcatalog2');
        $theme = $params->get('theme', 'default');

        $css_file = JPATH_ROOT . '/components/com_djcatalog2/themes/default/css/emails.css';

        if ($theme && $theme != 'default' && JFile::exists(JPATH_ROOT . '/components/com_djcatalog2/themes/' . $theme . '/css/emails.css')) {
            $css_file = JPATH_ROOT . '/components/com_djcatalog2/themes/' . $theme . '/css/emails.css';
        }

        $css = file_get_contents($css_file);
        $emogrifier = new \Pelago\Emogrifier();

        $emogrifier->setHtml($body);
        $emogrifier->setCss($css);

        $mergedHtml = $emogrifier->emogrify();

        return $mergedHtml;
    }
}