public function res_admin_insert_booking_callback()
 {
     // Check if user is logged in or die
     Resource_Booking_Ajax_Common::check_if_user_logged_in_or_die();
     // Check if user is a labmanager or die
     Resource_Booking_Ajax_Common::check_if_labmanager_or_die();
     // If here, user is labmanager (hopefully)
     $resource_id = isset($_POST['resource_id']) ? intval($_POST['resource_id'], 10) : 0;
     $client_id = isset($_POST['client_id']) ? intval($_POST['client_id'], 10) : 0;
     $start = isset($_POST['start']) ? $_POST['start'] : null;
     $end = isset($_POST['end']) ? $_POST['end'] : null;
     $details = isset($_POST['details']) ? $_POST['details'] : "";
     // Check if client_id exists (as user) or die
     $client_username = Resource_Booking_Ajax_Common::get_username_or_die($client_id);
     // Check if resource exists or die
     $resource_info = Resource_Booking_Ajax_Common::get_resource_info_or_die($this->rb_db, $resource_id, "array");
     // Check if valid dates && valid interval
     Resource_Booking_Ajax_Common::check_if_valid_start_end_i_u_d_or_die($start, $end, $resource_info);
     // Check if it doesn't overlap any booking or die
     Resource_Booking_Ajax_Common::check_if_not_overlapping_or_die($this->rb_db, $resource_id, null, $start, $end);
     // Sanitize details
     $details = strip_tags($details);
     // Validation done - good to insert data
     // Insert the new booking
     $booking = $this->rb_db->insert_booking($resource_id, $client_id, $client_username, $start, $end, $details);
     if (false === $booking) {
         // And die
         wp_send_json_error(array("message" => "Could not insert the booking!"));
     } else {
         $response = new stdClass();
         $response->success = true;
         $response->booking = array("id" => $booking->id, "resource_id" => $booking->resource_id, "user_id" => $booking->user_id, "username" => esc_html($booking->username), "start" => $booking->start, "end" => $booking->end, "details" => esc_html($booking->details), "personal" => true);
         echo json_encode($response);
         wp_die();
         // this is required to terminate immediately and return a proper response
     }
 }
 public function res_list_bookings_by_resource_id_start_end_callback()
 {
     // Check if user is logged in or die
     Resource_Booking_Ajax_Common::check_if_user_logged_in_or_die();
     $resource_id = isset($_POST['resource_id']) ? intval($_POST['resource_id'], 10) : 0;
     $start = isset($_POST['start']) ? $_POST['start'] : null;
     $end = isset($_POST['end']) ? $_POST['end'] : null;
     // Check if client_id exists (as user) or die
     global $user_ID;
     get_currentuserinfo();
     Resource_Booking_Ajax_Common::get_username_or_die($user_ID);
     //Check if resource exists or die
     Resource_Booking_Ajax_Common::check_resource_id_or_die($this->rb_db, $resource_id);
     // Check if valid dates && valid interval
     Resource_Booking_Ajax_Common::check_if_valid_start_end_date_calendar_or_die($start, $end);
     // Validation done - good to query data
     // Search for bookings
     $bookings = $this->rb_db->list_bookings_by_resource_id_start_end($resource_id, $start, $end);
     $response = new stdClass();
     $response->success = true;
     $response->events = array();
     foreach ($bookings as $booking) {
         if ($booking->user_id == $user_ID) {
             $user_id = $booking->user_id;
             $username = esc_html($booking->username);
             $details = esc_html($booking->details);
             $personal = true;
         } else {
             $user_id = "";
             $username = "******";
             $details = "";
             $personal = false;
         }
         $response->events[] = array("id" => $booking->id, "resource_id" => $booking->resource_id, "user_id" => $user_id, "username" => $username, "start" => $booking->start, "end" => $booking->end, "details" => $details, "personal" => $personal);
     }
     echo json_encode($response);
     wp_die();
     // this is required to terminate immediately and return a proper response
 }