public function run()
 {
     $app_settings_model = new waAppSettingsModel();
     $contact_settings_model = new waContactSettingsModel();
     $app_settings_model->set('blog', 'last_reminder_cron_time', time());
     // remider settings for all users
     $reminders = $contact_settings_model->select('contact_id, value')->where("app_id='blog' AND name='reminder'")->fetchAll('contact_id', true);
     if (!$reminders) {
         return;
     }
     $time = time();
     // do job no more one time in 24 hours
     $last_cron_times = $contact_settings_model->select('contact_id')->where("app_id='blog' AND name='last_reminder_cron_time' AND value <= " . ($time - 86400))->fetchAll('contact_id', true);
     $reminders_allowed = array_keys($last_cron_times);
     if (!$reminders_allowed) {
         return;
     }
     $post_model = new blogPostModel();
     $backend_url = $app_settings_model->get('blog', 'backend_url', wa()->getRootUrl(true) . wa()->getConfig()->getBackendUrl());
     $message_count = 0;
     foreach ($reminders_allowed as $contact_id) {
         $days = $reminders[$contact_id];
         // get all deadline posts for this contact
         $posts = $post_model->select("id, title, datetime")->where("status='" . blogPostModel::STATUS_DEADLINE . "' AND contact_id=" . $contact_id . " AND datetime < '" . date('Y-m-d H:i:s', $time + $days * 86400) . "'")->order('datetime')->fetchAll();
         if ($posts) {
             $contact = new waContact($contact_id);
             $email = $contact->get('email', 'default');
             $message = new waMailMessage(_w('Scheduled blog posts'), $this->getMessage($posts, $time, $backend_url));
             try {
                 $message->setTo($email);
                 if ($message->send()) {
                     $message_count++;
                 }
             } catch (Exception $e) {
             }
         }
         $contact_settings_model->set($contact_id, 'blog', 'last_reminder_cron_time', $time);
     }
     /**
      * Notify plugins about sending reminder
      * @event followup_send
      * @return void
      */
     wa()->event('reminder_send', $message_count);
 }