/// <summary>
/// Give change back to the machine operator.
/// </summary>
/// <returns></returns>
public List <Money> FinishTransaction()
{
List <Money> changeCurrency = new List <Money>();
if (TotalChangeAvailable > 0 && Balance > 0)
{
decimal currencyThreshold = 0.25M;
if (currencyDenominations[currencyThreshold].Count > 0 && Balance >= currencyThreshold)
{
Money quarters = new Quarter(true);
quarters.MakeChange(currencyDenominations[currencyThreshold], Balance);
changeCurrency.Add(quarters);
Balance -= quarters.TotalValue;
}
currencyThreshold = 0.10M;
if (currencyDenominations[currencyThreshold].Count > 0 && Balance >= currencyThreshold)
{
Money dimes = new Dime(true);
dimes.MakeChange(currencyDenominations[currencyThreshold], Balance);
changeCurrency.Add(dimes);
Balance -= dimes.TotalValue;
}
currencyThreshold = 0.05M;
if (currencyDenominations[currencyThreshold].Count > 0 && Balance >= currencyThreshold)
{
Money nickels = new Nickel(true);
nickels.MakeChange(currencyDenominations[currencyThreshold], Balance);
changeCurrency.Add(nickels);
Balance -= nickels.TotalValue;
}
decimal changeGiven = 0;
foreach (Money currency in changeCurrency)
{
changeGiven += currency.TotalValue;
}
TransactionLog($"GIVE CHANGE: {changeGiven:C}");
}
return(changeCurrency);
// Old version before Money class
//decimal changeGiven = Balance;
//int quarters = 0;
//int dimes = 0;
//int nickels = 0;
//while (Balance > 0)
//{
// if (Balance >= (decimal).25)
// {
// Balance -= (decimal).25;
// quarters++;
// }
// else if (Balance >= (decimal).10)
// {
// Balance -= (decimal).10;
// dimes++;
// }
// else if (Balance >= (decimal).05)
// {
// Balance -= (decimal).05;
// nickels++;
// }
//}
//TransactionLog($"GIVE CHANGE: {changeGiven:C}");
//string totalChange = $"Your Change is {quarters} Quarter(s), {dimes} Dime(s), and {nickels} Nickel(s)";
//return totalChange;
}