public void PurchaseItem(string slotSelected, VendingMachineCustomer myCustomer)
{
string message = "";
foreach (VendingMachineItem vmi in CurrentInventory)
{
if (vmi.SlotLocation == slotSelected)
{
if (vmi.Quantity > 0)
{
if (vmi.Price <= myCustomer.Balance)
{
myCustomer.Balance -= vmi.Price; // deduct from customer balance
vmi.Quantity--; // deduct from inventory qty
DailySales += vmi.Price; // add to machine daily sales
ItemsSoldToday.Add(vmi);
// logs in audit file when an item has been purchased
// logs date, time, item name, item slot, item price, customer balance
PrintToAuditFile(DateTime.Now.ToString() + " " + vmi.Name + " " + vmi.SlotLocation + " $" + vmi.Price + " $" + myCustomer.Balance);
Console.WriteLine(VendItem(vmi));
message = "Item sold.";
break;
}
else
{
message = "***Insufficient funds.***";
break;
}
}
else
{
message = "***Item sold out.***";
break;
}
}
else
{
message = "***NOT A VALID SELECTION***";
}
}
Console.WriteLine(message);
}
public string DispenseChange(VendingMachineCustomer vmi)
{
Console.WriteLine("Balance: " + vmi.Balance);
string giveChange = "Your change is "; //6.35
if (vmi.Balance > 0)
{
int numQuarters = (int)(vmi.Balance / 0.25M); //25
vmi.Balance -= (decimal)(numQuarters * 0.25M);
int numDimes = (int)(vmi.Balance / 0.10M);
vmi.Balance -= (decimal)(numDimes * 0.10M);
int numNickels = (int)(vmi.Balance / 0.05M);
vmi.Balance -= (decimal)(numNickels * 0.05M);
if (numQuarters != 0)
{
giveChange += numQuarters + " quarter(s) ";
}
if (numDimes != 0)
{
giveChange += numDimes + " dime(s) ";
}
if (numNickels != 0)
{
giveChange += numNickels + " nickel(s)";
}
// log to audit file when a customer finishes a transaction
// logs date, time, amount of change, customer balance (should be zero)
PrintToAuditFile(DateTime.Now + " GIVE CHANGE: $" + ((numQuarters * 0.25M) + (numDimes * 0.10M) + (numNickels * 0.05M)) + " $" + vmi.Balance);
}
else
{
giveChange += "0";
}
return(giveChange);
}