class Controller {
  public function StartSystem($v, $lv, $dtv, $login, $register) {
    $username = '';
    $pwd = '';
    $pwdConfirm = '';
    $error = '';
    $keepLoggedIn = false;
    $loggedIn = false;

    if(isset($_GET['register'])) {
        $_SESSION['REGISTER'] = true;
        $response = $lv->render(true, $v, $dtv);
        return $response;
    }

    if($_SERVER['REQUEST_METHOD'] == 'POST') {

      if(isset($_SESSION['LOGGEDIN'])) {
        $_SESSION['WELCOME'] = false;
        $_SESSION['LOGGEDIN'] = false;
        $_SESSION['REMEMBERED'] = false;
        $loggedIn = true;
      }

      if(isset($_SESSION['LOGOUT'])) {
        $_SESSION['BYEBYE'] = false;
        $_SESSION['LOGOUT'] = false;
        $loggedIn = false;
      }

    if(isset($_POST['LoginView::Logout']) && !isset($_SESSION['LOGOUT'])) {
      $_SESSION['LOGOUT'] = true;
      $_SESSION['BYEBYE'] = true;
      unset($_SESSION['LOGGEDIN']);
      $loggedIn = false;
    }

    if(isset($_POST['LoginView::Login']) && !isset($_SESSION['LOGGEDIN'])) {

      $username = $_POST['LoginView::UserName'];
      $pwd = $_POST['LoginView::Password'];
      $error = $login->errorHandler($username, $pwd);

      if(!empty($error)) {
        $_SESSION['ERROR'] = $error;
      }

      $loggedIn = $login->loggedIn($username, $pwd);

      unset($_SESSION['LOGOUT']);

      if (isset($_POST['LoginView::KeepMeLoggedIn'])) {
        $hashedPwd = password_hash($pwd, PASSWORD_DEFAULT);
        setcookie('LoginView::CookieName', $username, time() + 9999);
        setcookie('LoginView::CookiePassword', $hashedPwd, time() + 9999);
        $_SESSION['REMEMBERED'] = true;
      }

      if($loggedIn == true) {
        $_SESSION['LOGGEDIN'] = true;
        $_SESSION['WELCOME'] = true;
      }
    }
  }

    $lv->render($loggedIn, $v, $dtv);
  }
}