public IActionResult GetAllOrdersByUserId(int userId) { var validUser = _usersRepository.GetUserById(userId); if (validUser != null) { var orders = _ordersRepository.GetUserOrders(userId); var isEmpty = !orders.Any(); if (isEmpty) { return(NotFound("This user does not have any orders.")); } return(Ok(orders)); } return(NotFound("That user does not exist")); }