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<?php
/**
* JComments - Joomla Comment System
*
* @version 3.0
* @package JComments
* @author Sergey M. Litvinov (smart@joomlatune.ru)
* @copyright (C) 2006-2013 by Sergey M. Litvinov (http://www.joomlatune.ru)
* @license GNU/GPL: http://www.gnu.org/copyleft/gpl.html
*/
defined('_JEXEC') or die;
/**
* JComments Notification Helper
*/
class JCommentsNotificationHelper
{
/**
* Pushes the email notification to the mail queue
*
* @param array $data An associative array of notification data
* @param string $type Type of notification
*/
public static function push($data, $type = 'comment-new')
{
if (isset($data['comment'])) {
$subscribers = self::getSubscribers($data['comment']->object_id, $data['comment']->object_group,
$data['comment']->lang, $type);
if (count($subscribers)) {
JTable::addIncludePath(JCOMMENTS_TABLES);
$user = JFactory::getUser();
$data = self::prepareData($data, $type);
foreach ($subscribers as $subscriber) {
if (($data['comment']->email <> $subscriber->email) && ($user->email <> $subscriber->email)) {
if ($data['comment']->userid == 0 || $data['comment']->userid <> $subscriber->userid) {
$table = JTable::getInstance('Mailq', 'JCommentsTable');
$table->name = $subscriber->name;
$table->email = $subscriber->email;
$table->subject = self::getMessageSubject($data);
$table->body = self::getMessageBody($data, $subscriber);
$table->priority = self::getMessagePriority($type);
$table->created = JFactory::getDate()->toSql();
$table->store();
}
}
}
self::send();
}
}
}
/**
* Sends notifications from the mail queue to recipients
*
* @param int $limit The number of messages to be sent
*/
public static function send($limit = 10)
{
$app = JFactory::getApplication('site');
$senderEmail = $app->getCfg('mailfrom');
$senderName = $app->getCfg('fromname');
if (!empty($senderEmail) && !empty($senderName)) {
$db = JFactory::getDbo();
$query = $db->getQuery(true);
$query->select($db->quoteName('id'));
$query->from($db->quoteName('#__jcomments_mailq'));
$query->order($db->quoteName('priority') . ' desc');
$db->setQuery($query, 0, $limit);
$items = $db->loadObjectList('id');
if (!empty($items)) {
JTable::addIncludePath(JCOMMENTS_TABLES);
self::lock(array_keys($items));
foreach ($items as $item) {
$table = JTable::getInstance('Mailq', 'JCommentsTable');
if ($table->load($item->id)) {
if (empty($table->session_id) || $table->session_id == self::getSessionId()) {
$result = self::sendMail($senderEmail, $senderName, $table->email, $table->subject, $table->body);
if ($result) {
$table->delete();
} else {
$table->attempts = $table->attempts + 1;
$table->session_id = null;
$table->store();
}
}
}
}
}
}
}
/**
* Purges all notifications from the mail queue
*/
public static function purge()
{
$db = JFactory::getDbo();
$query = $db->getQuery(true);
$query->delete($db->quoteName('#__jcomments_mailq'));
$db->setQuery($query);
$db->execute();
}
/**
* Set lock to mail queue items by current session
*
* @param array $keys Array of IDs
*/
private static function lock($keys)
{
if (is_array($keys)) {
$db = JFactory::getDbo();
$query = $db->getQuery(true);
$query->update($db->quoteName('#__jcomments_mailq'));
$query->set($db->quoteName('session_id') . ' = ' . $db->Quote(self::getSessionId()));
$query->where($db->quoteName('session_id') . ' IS NULL');
$query->where($db->quoteName('id') . ' IN (' . implode(',', $keys) . ')');
$db->setQuery($query);
$db->execute();
}
}
/**
* Prepares data for notification
*
* @param array $data An associative array of notification data
* @param string $type Type of notification
*
* @return mixed
*/
private static function prepareData($data, $type)
{
require_once(JPATH_ROOT . '/components/com_jcomments/jcomments.php');
$object = JCommentsObjectHelper::getObjectInfo($data['comment']->object_id, $data['comment']->object_group, $data['comment']->lang);
$data['notification-type'] = $type;
$data['object_title'] = $object->title;
$data['object_link'] = JCommentsFactory::getAbsLink($object->link);
$data['comment']->author = JComments::getCommentAuthorName($data['comment']);
$data['comment']->title = JCommentsText::censor($data['comment']->title);
$data['comment']->comment = JCommentsText::censor($data['comment']->comment);
$data['comment']->comment = JCommentsFactory::getBBCode()->replace($data['comment']->comment);
if (JCommentsFactory::getConfig()->getInt('enable_custom_bbcode')) {
$data['comment']->comment = JCommentsFactory::getCustomBBCode()->replace($data['comment']->comment, true);
}
$data['comment']->comment = trim(preg_replace('/(\s){2,}/iu', '\\1', $data['comment']->comment));
return $data;
}
/**
* Returns priority of the message
*
* @param string $type Type of notification
*
* @return int
*/
private static function getMessagePriority($type)
{
switch ($type) {
case 'moderate-new':
case 'moderate-update':
$priority = 10;
break;
case 'report':
$priority = 5;
break;
case 'comment-new':
case 'comment-reply':
case 'comment-update':
default:
$priority = 0;
break;
}
return $priority;
}
/**
* Returns message subject
*
* @param array $data An associative array of notification data
*
* @return string
*/
private static function getMessageSubject($data)
{
switch ($data['notification-type']) {
case 'report':
$subject = JText::sprintf('REPORT_NOTIFICATION_SUBJECT', $data['comment']->author);
break;
case 'comment-new':
case 'moderate-new':
$subject = JText::sprintf('NOTIFICATION_SUBJECT_NEW', $data['object_title']);
break;
case 'comment-reply':
case 'comment-update':
case 'moderate-update':
default:
$subject = JText::sprintf('NOTIFICATION_SUBJECT_UPDATED', $data['object_title']);
break;
}
return $subject;
}
/**
* Returns message body
*
* @param array $data An associative array of notification data
* @param object $subscriber An object with information about subscriber
*
* @return string
*/
private static function getMessageBody($data, $subscriber)
{
switch ($data['notification-type']) {
case 'moderate-new':
case 'moderate-update':
$templateName = 'tpl_email_administrator';
break;
case 'report':
$templateName = 'tpl_email_report';
break;
case 'comment-new':
case 'comment-reply':
case 'comment-update':
default:
$templateName = 'tpl_email';
break;
}
$tmpl = JCommentsFactory::getTemplate($data['comment']->object_id, $data['comment']->object_group);
if ($tmpl->load($templateName)) {
$config = JCommentsFactory::getConfig();
foreach ($data as $key => $value) {
if (is_scalar($value)) {
$tmpl->addVar($templateName, $key, $value);
} else {
$tmpl->addObject($templateName, $key, $value);
}
}
$tmpl->addVar($templateName, 'notification-unsubscribe-link', self::getUnsubscribeLink($subscriber->hash));
$tmpl->addVar($templateName, 'comment-object_title', $data['object_title']);
$tmpl->addVar($templateName, 'comment-object_link', $data['object_link']);
if ($data['notification-type'] == 'report'
|| $data['notification-type'] == 'moderate-new'
|| $data['notification-type'] == 'moderate-update'
) {
$tmpl->addVar($templateName, 'quick-moderation', $config->getInt('enable_quick_moderation'));
$tmpl->addVar($templateName, 'enable-blacklist', $config->getInt('enable_blacklist'));
}
// backward compatibility only
$tmpl->addVar($templateName, 'hash', $subscriber->hash);
$tmpl->addVar($templateName, 'comment-isnew', ($data['notification-type'] == 'new') ? 1 : 0);
return $tmpl->renderTemplate($templateName);
}
return false;
}
/**
* Returns link for canceling the user's subscription for notifications about new comments
*
* @param string $hash Unique subscriber's hash value
*
* @return string
*/
public static function getUnsubscribeLink($hash)
{
$link = 'index.php?option=com_jcomments&task=unsubscribe&hash=' . $hash . '&format=raw';
if (JFactory::getApplication()->isAdmin()) {
$link = trim(str_replace('/administrator', '', JURI::root()), '/') . '/' . $link;
} else {
$liveSite = trim(str_replace(JURI::root(true), '', str_replace('/administrator', '', JURI::root())), '/');
$link = $liveSite . JRoute::_($link);
}
return $link;
}
/**
* Returns list of subscribers for given object and subscription type
*
* @param int $object_id
* @param string $object_group
* @param string $lang The language
* @param string $type The subscription type
*
* @return array
*/
private static function getSubscribers($object_id, $object_group, $lang, $type)
{
$subscribers = array();
switch ($type) {
case 'moderate-new':
case 'moderate-update':
case 'report':
$config = JCommentsFactory::getConfig();
if ($config->get('notification_email') != '') {
$emails = explode(',', $config->get('notification_email'));
$db = JFactory::getDbo();
$db->setQuery('SELECT * FROM #__users WHERE email IN ("' . implode('", "', $emails) . '")');
$users = $db->loadObjectList('email');
foreach ($emails as $email) {
$email = trim($email);
$subscriber = new stdClass();
$subscriber->id = isset($users[$email]) ? $users[$email]->id : 0;
$subscriber->name = isset($users[$email]) ? $users[$email]->name : '';
$subscriber->email = $email;
$subscriber->hash = md5($email);
$subscribers[] = $subscriber;
}
}
break;
case 'comment-new':
case 'comment-reply':
case 'comment-update':
default:
$db = JFactory::getDbo();
$query = "SELECT DISTINCTROW js.`name`, js.`email`, js.`hash`, js.`userid` "
. " FROM #__jcomments_subscriptions AS js"
. " JOIN #__jcomments_objects AS jo ON js.object_id = jo.object_id AND js.object_group = jo.object_group"
. " WHERE js.`object_group` = " . $db->Quote($object_group)
. " AND js.`object_id` = " . intval($object_id)
. " AND js.`published` = 1 "
. (JCommentsMultilingual::isEnabled() ? " AND js.`lang` = " . $db->Quote($lang) : '')
. (JCommentsMultilingual::isEnabled() ? " AND jo.`lang` = " . $db->Quote($lang) : '');
$db->setQuery($query);
$subscribers = $db->loadObjectList();
break;
}
return is_array($subscribers) ? $subscribers : array();
}
/**
* Function to send an email
*
* @param string $from From email address
* @param string $fromName From name
* @param mixed $recipient Recipient email address(es)
* @param string $subject Email subject
* @param string $body Message body
*
* @return boolean True on success
*/
private static function sendMail($from, $fromName, $recipient, $subject, $body)
{
$mailer = JFactory::getMailer();
$mailer->setSender(array($from, $fromName));
$mailer->addRecipient($recipient);
$mailer->setSubject($subject);
$mailer->setBody($body);
$mailer->IsHTML(true);
return $mailer->Send();
}
/**
* Returns current session id
*
* @return string
*/
private static function getSessionId()
{
static $sessionId = null;
if ($sessionId === null) {
$sessionId = JFactory::getSession()->getId();
}
return $sessionId;
}
}