public ActionResult Index(NewProductInputModel newProduct)
{
if (ModelState.IsValid)
{
var workingOnMemory = (bool)(Session?["WorkingOnMemory"] ?? true);
var productsDAO = _productsDAOFactory.Create(workingOnMemory);
var result = ProductRegister.Register(productsDAO, newProduct);
if (result is SuccessfulProductRegistrationResult)
{
return(RedirectToAction("Index", "Home"));
}
if (result is FailedProductRegistrationResult failedResult)
{
ViewBag.Message = failedResult.Reason;
}
}
return(View("", newProduct));
}
public static IProductRegistrationResult Register(IProductStoringDAO productsDAO, NewProductInputModel newProduct)
{
if (productsDAO.ThereIsAlreadySomeProductWith(newProduct.Number))
{
return(new FailedProductRegistrationResult("There is already another product that is using the same number."));
}
if (productsDAO.ThereIsAlreadySomeProductWith(newProduct.Title))
{
return(new FailedProductRegistrationResult("There is already another product that is using the same title."));
}
var product = new Product(newProduct.Number, Text.Create(newProduct.Title), newProduct.Price, Text.Create(newProduct.Description));
StoredProduct storedProduct;
try
{
storedProduct = productsDAO.Store(product);
}
catch (Exception)
{
return(new FailedProductRegistrationResult("There was a problem, please try again.")); // Of course here is the opportunity to log the specific exception
}
return(new SuccessfulProductRegistrationResult(storedProduct));
}