public static void Start(List<User> users, List<Product> products)
{
int exitIndex = products.Count();
User currentUser = new User();
UI.printTUSCWelcome();
// Login - when a user's login is incorrect, the application flow will return here to prompt for a new login
Login:
currentUser.getUserName();
if (!string.IsNullOrEmpty(currentUser.Name))
{
if (currentUser.IsValidUserName())
{
currentUser.getUserPassword();
if (currentUser.IsValidUserPassword())
{
UI.printUserWelcome(currentUser.Name);
if (currentUser.IsValidUser())
UI.printUserBalance(currentUser);
// Show product list
while (true)
{
UI.printProductList(products);
int productChoice = UI.promptProductChoice();
if (productChoice == exitIndex)
{
Program.SaveAndClose(currentUser, products);
}
else
{
Product currentProduct = products[productChoice];
UI.printUserProductSelection(currentProduct.Name, currentUser.GetRemainingBalanceFormatted());
int prodQuantityToPurchase = UI.promptProductQuantityToPurchase();
if (Product.isProductOkToPurchase(currentUser, currentProduct, prodQuantityToPurchase))
{
currentUser.RemainingBalance -= currentProduct.Price * prodQuantityToPurchase;
currentProduct.Qty -= prodQuantityToPurchase;
UI.printUserPurchase(prodQuantityToPurchase, currentProduct, currentUser);
products[productChoice] = currentProduct;
}
else
continue;
}
}
}
else
{
UI.printInvalidPassword();
goto Login;
}
}
else
{
UI.printInvalidUser();
goto Login;
}
}
UI.promptForClose();
}
