public void StoreMoney(UserMoney money)
{
var userMoney = this.Money.Where(s => s.Currency.Name.Equals(money.Currency.Name)).FirstOrDefault();
if (userMoney == null)
{
userMoney = money;
this.Money.Add(userMoney);
}
else
{
userMoney.CashIn(money.Amount);
}
}
public void Convert(Currency fromCurrency, Currency toCurreny, decimal amount)
{
var moneyFrom = this.Money.Where(s => s.Currency.Name.Equals(fromCurrency.Name)).FirstOrDefault();
if (moneyFrom == null)
{
throw new Exception($"The current user dont have money stored with the {fromCurrency.Name} currency.");
}
var moneyTo = this.Money.Where(s => s.Currency.Name.Equals(toCurreny.Name)).FirstOrDefault();
if (moneyTo == null)
{
moneyTo = new UserMoney
{
Currency = toCurreny
};
}
decimal cashInAmount = amount,
cashOutAmount = 0m;
if (moneyFrom.CanConvert(toCurreny, amount))
{
decimal mfConvertedAmount = moneyFrom.ConvertToCurrency(toCurreny);
cashOutAmount = mfConvertedAmount - (mfConvertedAmount - cashInAmount);
moneyTo.CashIn(cashInAmount);
moneyFrom.CashOut(cashOutAmount);
}
else
{
throw new Exception($"The {moneyFrom.Currency.Name} money balance is not enough to convert to {cashInAmount} {toCurreny.Name}");
}
if (moneyTo == null)
{
this.Money.Add(moneyTo);
}
}
