static void Main(string[] args)
{
var cashier = new Agent();
Console.Write("Case 1: ");
var cashRegiter1 = new CashRegister(new Dictionary <CoinCompartmentsType, decimal>
{
{ CoinCompartmentsType.Penny, 1.01m },
{ CoinCompartmentsType.Nickel, 2.05m },
{ CoinCompartmentsType.Dime, 3.10m },
{ CoinCompartmentsType.Quarter, 4.25m },
{ CoinCompartmentsType.One, 90m },
{ CoinCompartmentsType.Five, 55m },
{ CoinCompartmentsType.Ten, 20m },
{ CoinCompartmentsType.Twenty, 60m },
{ CoinCompartmentsType.Fifty, 50m },
{ CoinCompartmentsType.OneHundred, 100m }
});
Console.WriteLine(cashier.CheckCashRegister(3.26m, 100m, cashRegiter1));
Console.Write("Case 2: ");
var cashRegister2 = new CashRegister(new Dictionary <CoinCompartmentsType, decimal>
{
{ CoinCompartmentsType.Penny, 0.01m },
{ CoinCompartmentsType.Nickel, 0 },
{ CoinCompartmentsType.Dime, 0 },
{ CoinCompartmentsType.Quarter, 0 },
{ CoinCompartmentsType.One, 1m },
{ CoinCompartmentsType.Five, 0 },
{ CoinCompartmentsType.Ten, 0 },
{ CoinCompartmentsType.Twenty, 0 },
{ CoinCompartmentsType.Fifty, 50m },
{ CoinCompartmentsType.OneHundred, 0 }
});
Console.WriteLine(cashier.CheckCashRegister(19.50m, 20m, cashRegister2));
Console.Write("Case 3: ");
var cashRegister3 = new CashRegister(new Dictionary <CoinCompartmentsType, decimal>
{
{ CoinCompartmentsType.Penny, 0.50m },
{ CoinCompartmentsType.Nickel, 0 },
{ CoinCompartmentsType.Dime, 0 },
{ CoinCompartmentsType.Quarter, 0 },
{ CoinCompartmentsType.One, 0 },
{ CoinCompartmentsType.Five, 0 },
{ CoinCompartmentsType.Ten, 30m },
{ CoinCompartmentsType.Twenty, 20m },
{ CoinCompartmentsType.Fifty, 0 },
{ CoinCompartmentsType.OneHundred, 0 }
});
Console.WriteLine(cashier.CheckCashRegister(19.50m, 70m, cashRegister3));
Console.ReadKey();
}
public string CheckCashRegister(decimal itemPrice, decimal cash, CashRegister cashRegister)
{
var changeAmount = cash - itemPrice;
List <KeyValuePair <CoinCompartmentsType, decimal> > changeDue = GetChangeDue(cashRegister, ref changeAmount);
return(changeAmount != 0 ? // failed to fully pay the changeAmount?
"Insufficient Funds" :
cashRegister.GetBalance() == 0 ? // any remaining cash in drawer?
"Closed" :
string.Join(", ", changeDue.Where(c => c.Value != 0)));
}
private List <KeyValuePair <CoinCompartmentsType, decimal> > GetChangeDue(CashRegister cashRegister, ref decimal changeAmount)
{
return(new List <KeyValuePair <CoinCompartmentsType, decimal> >
{
Payout(changeAmount, CoinCompartmentsType.OneHundred, cashRegister, out changeAmount),
Payout(changeAmount, CoinCompartmentsType.Fifty, cashRegister, out changeAmount),
Payout(changeAmount, CoinCompartmentsType.Twenty, cashRegister, out changeAmount),
Payout(changeAmount, CoinCompartmentsType.Ten, cashRegister, out changeAmount),
Payout(changeAmount, CoinCompartmentsType.Five, cashRegister, out changeAmount),
Payout(changeAmount, CoinCompartmentsType.One, cashRegister, out changeAmount),
Payout(changeAmount, CoinCompartmentsType.Quarter, cashRegister, out changeAmount),
Payout(changeAmount, CoinCompartmentsType.Dime, cashRegister, out changeAmount),
Payout(changeAmount, CoinCompartmentsType.Nickel, cashRegister, out changeAmount),
Payout(changeAmount, CoinCompartmentsType.Penny, cashRegister, out changeAmount)
});
}
private KeyValuePair <CoinCompartmentsType, decimal> Payout(decimal changeAmount, CoinCompartmentsType compartmentType, CashRegister cashRegister, out decimal remainingChange)
{
remainingChange = changeAmount;
bool IsDueByThisCoinCompartment = CashDrawerDefination.GetValue(compartmentType) > changeAmount;
if (IsDueByThisCoinCompartment)
{
return(new KeyValuePair <CoinCompartmentsType, decimal>(compartmentType, 0));
}
var quantity = Math.Floor(changeAmount / CashDrawerDefination.GetValue(compartmentType));
var cashValue = Math.Min(quantity * CashDrawerDefination.GetValue(compartmentType), cashRegister.CashDrawerValues[compartmentType]);
cashRegister.PickCash(compartmentType, cashValue);
remainingChange = changeAmount - cashValue;
return(new KeyValuePair <CoinCompartmentsType, decimal>(compartmentType, cashValue));
}
