/// <summary>
/// Übernahme des Einwurfs in das Münzdepot.
/// Rückgabe des Retourgeldes aus der Kasse. Staffelung des Retourgeldes
/// hängt vom Inhalt der Kasse ab.
/// </summary>
/// <param name="coins">Aktueller Zustand des Münzdepots</param>
public IEnumerable <Coin> FinishPayment(IEnumerable <Coin> coins)
{
int retCents = ReturnCents;
Coin[] coinsArray = coins
.OrderByDescending(c => c.CoinValue)
.ToArray();
if (retCents > 0)
{
for (int i = 0; i < coinsArray.Length; i++)
{
while (coinsArray[i].Amount > 0 && retCents - coinsArray[i].CoinValue >= 0)
{
ReturnCoinValues = $"{ReturnCoinValues}{coinsArray[i].CoinValue};";
retCents -= coinsArray[i].CoinValue;
coinsArray[i].Amount--;
}
}
}
if (ReturnCoinValues.Length > 0)
{
ReturnCoinValues = ReturnCoinValues.Remove(ReturnCoinValues.Length - 1);
}
DonationCents = retCents;
return(coinsArray.OrderBy(c => c.CoinValue));
}
/// <summary>
/// Münze wird eingenommen.
/// </summary>
/// <param name="coinValue"></param>
/// <returns>isFinished ist true, wenn der Produktpreis zumindest erreicht wurde</returns>
public bool InsertCoin(int coinValue)
{
int productPrice = Product.PriceInCents;
ThrownInCents += coinValue;
ReturnCents = ThrownInCents - productPrice;
int sum = ReturnCents;
while (sum > 0)
{
if (sum - 200 >= 0)
{
sum -= 200;
ReturnCoinValues += "200;";
}
else if (sum - 100 >= 0)
{
sum -= 100;
ReturnCoinValues += "100;";
}
else if (sum - 50 >= 0)
{
sum -= 50;
ReturnCoinValues += "50;";
}
else if (sum - 20 >= 0)
{
sum -= 20;
ReturnCoinValues += "20;";
}
else if (sum - 10 >= 0)
{
sum -= 10;
ReturnCoinValues += "10;";
}
else if (sum - 5 >= 0)
{
sum -= 5;
ReturnCoinValues += "5;";
}
else if (sum - 2 >= 0)
{
sum -= 2;
ReturnCoinValues += "2;";
}
else if (sum - 1 >= 0)
{
sum -= 1;
ReturnCoinValues += "1;";
}
}
ReturnCoinValues = ReturnCoinValues.Remove(ReturnCoinValues.Length - 1, 1);
return(coinValue >= Product.PriceInCents);
}
/// <summary>
/// Übernahme des Einwurfs in das Münzdepot.
/// Rückgabe des Retourgeldes aus der Kasse. Staffelung des Retourgeldes
/// hängt vom Inhalt der Kasse ab.
/// </summary>
/// <param name="coins">Aktueller Zustand des Münzdepots</param>
public void FinishPayment(IEnumerable <Coin> coins)
{
int ret = _returnCents;
if (ret == 0)
{
ReturnCoinValues = "0";
}
foreach (var item in coins.OrderByDescending(c => c.CoinValue))
{
while (ret >= item.CoinValue && item.Amount > 0 && ret > 0)
{
ret -= item.CoinValue;
item.Amount--;
ReturnCoinValues = $"{ReturnCoinValues}{item.CoinValue};";
}
}
if (ReturnCoinValues.Length > 1)
{
ReturnCoinValues = ReturnCoinValues.Remove(ReturnCoinValues.Length - 1);
}
_donationCents = ret;
}