public void MakeChange(decimal productCost)
{
var coins = new List <ICoin>();
var cost = productCost;
var deposited = DepositedCoins.TotalValue();
var amountOwedToCustomer = deposited - cost;
var refundRemaining = amountOwedToCustomer;
if ((amountOwedToCustomer % new decimal(0.25)) < amountOwedToCustomer)
{
var numOfCoins = (int)(amountOwedToCustomer / new decimal(0.25));
for (var i = 0; i < numOfCoins; i++)
{
coins.Add(Coin.Quarter);
}
refundRemaining = refundRemaining % new decimal(0.25);
amountOwedToCustomer = refundRemaining;
}
if ((amountOwedToCustomer % new decimal(0.10)) < amountOwedToCustomer)
{
var numOfCoins = (int)(amountOwedToCustomer / new decimal(0.10));
for (var i = 0; i <= numOfCoins; i++)
{
coins.Add(Coin.Dime);
}
refundRemaining = refundRemaining % new decimal(0.10);
amountOwedToCustomer = refundRemaining;
}
if ((amountOwedToCustomer % new decimal(0.05)) < amountOwedToCustomer)
{
var numOfCoins = (int)(amountOwedToCustomer / new decimal(0.05));
for (var i = 0; i <= numOfCoins; i++)
{
coins.Add(Coin.Nickel);
}
refundRemaining = refundRemaining % new decimal(0.05);
amountOwedToCustomer = refundRemaining;
}
foreach (var coin in coins)
{
CoinInventory.Remove(coin);
CoinReturn.Deposit(coin.ToMetal());
}
}
public void InvalidCoin(IMetal metal)
{
CoinReturn.Deposit(metal);
StartState();
}
