/**
  * Get a single email
  *
  * @since 4.1
  * @param int $id
  * @param array $fields
  * @return array
  */
 public function get_email($id, $fields = array())
 {
     // validate the email ID
     $id = $this->validate_request($id, 'follow_up_email', 'read');
     // Return the validate error.
     if (is_wp_error($id)) {
         return $id;
     }
     $email = new FUE_Email($id);
     $email_data = array('id' => $email->id, 'created_at' => $email->post->post_date, 'type' => $email->get_type(), 'template' => $email->template, 'name' => $email->name, 'subject' => $email->subject, 'message' => $email->message, 'status' => $this->fix_status_string($email->status, true), 'trigger' => $email->trigger, 'trigger_string' => $email->get_trigger_string(), 'interval' => $email->interval, 'duration' => $email->duration, 'always_send' => $email->always_send, 'product_id' => $email->product_id, 'category_id' => $email->category_id, 'campaigns' => wp_get_object_terms($email->id, 'follow_up_email_campaign', array('fields' => 'slugs')));
     return array('email' => apply_filters('fue_api_email_response', $email_data, $email, $fields, $this->server));
 }
 /**
  * Get the name and trigger of the follow-up email
  * @param array $item
  * @return string
  */
 public function get_email_value($item)
 {
     $email = new FUE_Email($item['email_id']);
     if (!$email->exists()) {
         return '<em>deleted</em>';
     }
     if ($email->status != FUE_Email::STATUS_ACTIVE) {
         return sprintf(__('<a href="%s">#%d %s</a> - Inactive<br/><small>(%s)</small>', 'follow_up_emails'), admin_url('post.php?post=' . $item['email_id'] . '&action=edit'), $item['email_id'], $email->name, $email->get_trigger_string());
     } else {
         return sprintf(__('<a href="%s">#%d %s</a><br/><small>(%s)</small>', 'follow_up_emails'), admin_url('post.php?post=' . $item['email_id'] . '&action=edit'), $item['email_id'], $email->name, $email->get_trigger_string());
     }
     return sprintf(__('<a href="%s">#%d %s</a><br/><small>(%s)</small>', 'follow_up_emails'), 'admin.php?page=followup-emails-form&id=' . $item['email_id'], $item['email_id'], $email->name, $email->get_trigger_string());
 }