public void RunInterface()
{
bool done = false;
UIAction action = UIAction.DisplayMainMenu;
while (!done)
{
uiManager.CurrentBalance = vendingMachine.CurrentBalance;
VendingMachineTransaction transaction;
try
{
switch (action)
{
case UIAction.DisplayMainMenu:
action = uiManager.PrintMainMenu();
break;
case UIAction.DisplayPurchasing:
action = uiManager.PrintPurchasingMenu();
break;
case UIAction.FeedMoney:
int amount = uiManager.FeedMoneyRequest();
transaction = vendingMachine.FeedMoney(amount);
dataManager.WriteTransaction(transaction, vendingMachine.CurrentBalance);
uiManager.CurrentBalance = vendingMachine.CurrentBalance;
uiManager.PrintTransaction(transaction);
action = UIAction.DisplayPurchasing;
break;
case UIAction.ReviewItems:
action = uiManager.PrintProductSelectionMenu(vendingMachine.GetAllItems(), UIAction.CheckItem);
break;
case UIAction.DisplayItems:
action = uiManager.PrintProductSelectionMenu(vendingMachine.GetAllItems(), UIAction.PurchaseItem);
break;
case UIAction.CheckItem:
VendingMachineItem item = null;
item = vendingMachine.CheckItem(uiManager.CurrentType, uiManager.CurrentSlot);
uiManager.PrintItemCheck(item);
action = UIAction.DisplayMainMenu;
break;
case UIAction.PurchaseItem:
transaction = vendingMachine.PurchaseItem(uiManager.CurrentType, uiManager.CurrentSlot);
dataManager.WriteTransaction(transaction, vendingMachine.CurrentBalance);
uiManager.CurrentBalance = vendingMachine.CurrentBalance;
uiManager.PrintTransaction(transaction);
action = UIAction.DisplayPurchasing;
break;
case UIAction.FinishTransaction:
transaction = vendingMachine.FinishTransaction();
dataManager.WriteTransaction(transaction, vendingMachine.CurrentBalance);
uiManager.PrintTransaction(transaction);
action = UIAction.DisplayMainMenu;
break;
case UIAction.Exit:
done = true;
break;
case UIAction.SalesReport:
action = UIAction.DisplayMainMenu;
// I can't decide between this Query syntax or that Lambda syntax..
//var items = from itemArray in vendingMachine.GetAllItems().Values
// from item in itemArray
// where item != null
// select item;
IEnumerable <VendingMachineItem> items = vendingMachine.GetAllItems().Values
.SelectMany(x => x).Where(x => x != null);
dataManager.GenerateSalesReport(items.ToList());
uiManager.PrintTransaction(new VendingMachineTransaction(TransactionType.GenerateSalesReport));
break;
default:
action = UIAction.DisplayMainMenu;
break;
}
}
catch (Exception e)
{
uiManager.PrintException(e);
action = UIAction.DisplayMainMenu;
}
}
Console.ForegroundColor = ConsoleColor.Gray;
Console.SetCursorPosition(1, Console.WindowHeight - 1);
}