public VendingMachineTransaction PurchaseItem(ItemType type, int slot)
{
VendingMachineTransaction result;
if (StockList[type][slot] == null)
{
result = new VendingMachineTransaction(TransactionType.InvalidPurchase, 0, StockList[type][slot]);
}
else if (StockList[type][slot].Price > CurrentBalance)
{
result = new VendingMachineTransaction(TransactionType.NotSufficientFunds, StockList[type][slot]);
}
else if (StockList[type][slot].Quantity > 0)
{
CurrentBalance -= StockList[type][slot].Price;
--StockList[type][slot].Quantity;
result = new VendingMachineTransaction(TransactionType.PurchaseItem, StockList[type][slot]);
}
else
{
result = new VendingMachineTransaction(TransactionType.ItemOutOfStock, StockList[type][slot]);
}
TransactionLog.Add(result);
return(result);
}
public VendingMachineTransaction FinishTransaction()
{
VendingMachineTransaction transaction = new VendingMachineTransaction(TransactionType.GiveChange, CurrentBalance);
CurrentBalance = 0;
TransactionLog.Add(transaction);
return(transaction);
}
public void WriteTransaction(VendingMachineTransaction transaction, decimal currentBalance)
{
using (StreamWriter sw = new StreamWriter(LogFile, true))
{
switch (transaction.Type)
{
case TransactionType.MachineStart:
sw.WriteLine();
goto default;
case TransactionType.PurchaseItem:
VendingMachineItem item = transaction.Item;
sw.WriteLine($"{transaction.Timestamp} {item.Name} {(char)item.Type}{item.Slot} {transaction.Amount.ToString("C")}\t\t{currentBalance.ToString("C")}");
break;
default:
sw.WriteLine($"{transaction.Timestamp} {transaction.Type} {transaction.Amount.ToString("C")}\t\t{currentBalance.ToString("C")}");
break;
}
}
}
public VendingMachineTransaction FeedMoney(int amountToAdd)
{
List <int> validBills = new List <int> {
1, 2, 5, 10, 20
};
bool isValid = validBills.Contains(amountToAdd);
VendingMachineTransaction result;
if (!isValid)
{
result = new VendingMachineTransaction(TransactionType.InvalidBill, 0);
amountToAdd = 0;
}
else
{
result = new VendingMachineTransaction(TransactionType.FeedMoney, amountToAdd);
CurrentBalance += amountToAdd;
}
TransactionLog.Add(result);
return(result);
}
public void PrintTransaction(VendingMachineTransaction transaction)
{
PrintBalance();
SetCursorPosition(4, 6);
SetColor(Gray);
switch (transaction.Type)
{
case TransactionType.FeedMoney:
Write($"Yay Money! You gave me a ");
SetColor();
Write($"{transaction.Amount.ToString("C")}");
SetColor(Gray);
Write(" bill!");
SetCursorPosition(4, 7);
break;
case TransactionType.InvalidBill:
Write($"That isn't real money. What am I supposed to do with that?");
SetCursorPosition(4, 7);
break;
case TransactionType.PurchaseItem:
VendingMachineItem item = transaction.Item;
switch (item.Type)
{
case ItemType.Candy:
Write("Munch Munch, Yum!");
break;
case ItemType.Chip:
Write("Crunch Crunch, Yum!");
break;
case ItemType.Drink:
Write("Glug Glug, Yum!");
break;
case ItemType.Gum:
Write("Chew Chew, Yum!");
break;
}
SetCursorPosition(4, 7);
break;
case TransactionType.InvalidPurchase:
Write("There's nothing there for you to buy.");
SetCursorPosition(4, 7);
Write("You can't buy that.");
SetCursorPosition(4, 8);
Write("Buy something else.");
SetCursorPosition(4, 9);
break;
case TransactionType.NotSufficientFunds:
Write("I get that you'd like that,");
SetCursorPosition(6, 7);
Write("but sadly..");
SetCursorPosition(8, 8);
Write("you can't afford it.");
SetCursorPosition(4, 10);
Write("Insert additional cash or try something different.");
SetCursorPosition(4, 11);
break;
case TransactionType.ItemOutOfStock:
Write("I'm sorry, we're all out of that!");
SetCursorPosition(4, 8);
break;
case TransactionType.GiveChange:
if (transaction.Amount >= 0.05M)
{
int[] coins = { 0, 0, 0 };
decimal total = transaction.Amount;
while (total >= 0.05M)
{
if (total >= 0.25M)
{
++coins[0];
total -= 0.25M;
}
else if (total >= 0.10M)
{
++coins[1];
total -= 0.10M;
}
else if (total >= 0.05M)
{
++coins[2];
total -= 0.05M;
}
}
SetColor(Gray);
Write($"You receive ");
SetColor();
if (coins[0] > 0)
{
Write(coins[0]);
SetColor(Gray);
Write(" quarter");
if (coins[0] > 1)
{
Write("s");
}
if (coins[1] > 0 || coins[2] > 0)
{
Write(", ");
}
else
{
Write(".");
}
SetColor();
}
if (coins[1] > 0)
{
if (coins[0] > 0 && coins[2] == 0)
{
SetColor(Gray);
Write("and ");
SetColor();
}
Write(coins[1]);
SetColor(Gray);
Write(" dime");
if (coins[1] > 1)
{
Write("s");
}
if (coins[2] > 0)
{
Write(", ");
}
else
{
Write(".");
}
SetColor();
}
if (coins[2] > 0)
{
if (coins[0] > 0 || coins[1] > 0)
{
SetColor(Gray);
Write("and ");
SetColor();
}
Write(coins[2]);
SetColor(Gray);
Write(" nickle.");
SetColor();
}
SetCursorPosition(4, 7);
}
break;
case TransactionType.GenerateSalesReport:
Write("Generating Sales report!");
SetCursorPosition(4, 7);
break;
default:
throw new NotImplementedException(transaction.Type.ToString());
}
PrintContinueMessage();
}