private void RemoveCurrencyIfShould(SellCurrencyCommand command)
{
if (ShouldRemoveCurrency(command))
{
command.User.Currencies.Remove(command.UserCurrency);
}
}
public User SellCurrency(SellCurrencyCommand command)
{
sellCurrencyValidator.ValidateCanSellCurrency(command);
ChargeCantorEarns(command);
ChargeUserEarns(command);
UpdateOrDeleteUserCurrencyAmount(command);
return(command.User);
}
public bool ValidateCanSellCurrency(SellCurrencyCommand command)
{
transactionValidator.ValidateTransaction(command);
if (HasUserNotEnoughCurrencyAmount(command))
{
throw new SellCurrencyException("User doesn't have enough currency amount");
}
return(true);
}
private bool HasUserNotEnoughCurrencyAmount(SellCurrencyCommand command)
{
return(command.UserCurrency.Amount < command.Amount);
}
private bool ShouldRemoveCurrency(SellCurrencyCommand command)
{
return(command.UserCurrency.Amount == 0);
}
private void EditCurrencyAmount(SellCurrencyCommand command)
{
command.UserCurrency.Amount -= command.Amount;
}
private void UpdateOrDeleteUserCurrencyAmount(SellCurrencyCommand command)
{
EditCurrencyAmount(command);
RemoveCurrencyIfShould(command);
}
private void ChargeUserEarns(SellCurrencyCommand command)
{
command.User.Money += command.UserMoneyEarns;
}
private void ChargeCantorEarns(SellCurrencyCommand command)
{
command.CantorCurrency.Amount += command.Amount;
}
