/**
  * Retrieves the latest notifications for the specified user.
  * 
  * @param WebSoccer $websoccer Application contex
  * @param DbConnection $db DB connection
  * @param I18n $i18n I18n context.
  * @param int $userId ID of user
  * @param int $teamId ID of user's currently selected team
  * @param int $limit maximum number of notifications to return.
  * @return array Array of assoc. arrays which represent a notification. A notification has keys id, eventdate, eventtype, seen, message, link
  */
 public static function getLatestNotifications(WebSoccer $websoccer, DbConnection $db, I18n $i18n, $userId, $teamId, $limit)
 {
     $result = $db->querySelect('*', $websoccer->getConfig('db_prefix') . '_notification', 'user_id = %d AND (team_id = %d OR team_id IS NULL) ORDER BY eventdate DESC', array($userId, $teamId), $limit);
     $notifications = array();
     while ($row = $result->fetch_array()) {
         $notification = array('id' => $row['id'], 'eventdate' => $row['eventdate'], 'eventtype' => $row['eventtype'], 'seen' => $row['seen']);
         // prepare message
         if ($i18n->hasMessage($row['message_key'])) {
             $message = $i18n->getMessage($row['message_key']);
         } else {
             $message = $row['message_key'];
         }
         // replace place holders
         if (strlen($row['message_data'])) {
             $messageData = json_decode($row['message_data'], true);
             if ($messageData) {
                 foreach ($messageData as $placeholderName => $placeholderValue) {
                     $message = str_replace('{' . $placeholderName . '}', htmlspecialchars($placeholderValue, ENT_COMPAT, 'UTF-8'), $message);
                 }
             }
         }
         $notification['message'] = $message;
         // add target link
         $link = '';
         if ($row['target_pageid']) {
             if ($row['target_querystr']) {
                 $link = $websoccer->getInternalUrl($row['target_pageid'], $row['target_querystr']);
             } else {
                 $link = $websoccer->getInternalUrl($row['target_pageid']);
             }
         }
         $notification['link'] = $link;
         $notifications[] = $notification;
     }
     return $notifications;
 }