<?php
declare(strict_types=1);
namespace MRBS\Session;

use MRBS\User;
use function MRBS\auth;

/**
 * Session management scheme that uses IP addresses to identify users.
 *
 * Anyone who can access the server can make bookings.  Administrators are also identified by their IP address.
 *
 * To use this authentication scheme, set the following things in config.inc.php:
 *
 *     $auth['type']    = 'none';
 *     $auth['session'] = 'ip';
 *
 * Then, you may configure admin users:
 *
 *     $auth['admin'][] = '127.0.0.1'; // Local host = the server you're running on
 *     $auth['admin'][] = '192.168.0.1';
 */
class SessionIp extends Session
{

  // No need to prompt for a name - IP address always there
  public function getCurrentUser() : ?User
  {
    global $server;

    if ((!isset($server['REMOTE_ADDR'])) ||
        (!is_string($server['REMOTE_ADDR'])) ||
        (($server['REMOTE_ADDR'] === '')))
    {
      return parent::getCurrentUser();
    }

    return auth()->getUser($server['REMOTE_ADDR']);
  }

}