public string RefillBalance(int customerId, decimal moneyAmount)
{
//if(!IsMoneyAmountValid(moneyAmount))
//{
// _logger.Log("Money amount is invalid");
// return "Money amount is invalid";
//}
//Customer customer = _database.Get(customerId);
//if(customer == null)
//{
// _logger.Log("Customer is not found");
// return "Customer is not found";
//}
//customer.Balance += moneyAmount;
//try
//{
// _paymentGateway.ChargePayment(customer.BillingInfo, moneyAmount);
//}
//catch(ChargePaymentException e)
//{
// _logger.Log("Unable to charge the credit card");
// return "Unable to connect to the database";
//}
//try
//{
// _database.Save(customer);
//}
//catch (SqlException e)
//{
// _paymentGateway.RollbackLastTransaction();
// _logger.Log("Unable to charge the credit card");
// return "Unable to connect to the database";
//}
//_logger.Log("Ok");
//return "OK";
var moneyToCharge = MoneyToCharge.Create(moneyAmount);
var customer = _database.Get(customerId).ToResult("Customer is not found");
return(Result.Combine(moneyToCharge, customer)
.OnSuccess(() => customer.Value.AddBalance(moneyToCharge.Value))
.OnSuccess(() => _paymentGateway.ChargePayment(customer.Value.BillingInfo, moneyToCharge.Value))
.OnSuccess(() => _database.Save(customer.Value).OnFailure(() => _paymentGateway.RollbackLastTransaction()))
.OnBoth(result => Log(result))
.OnBoth(result => result.IsSuccess ? "Ok" : result.ErrorMessage));
}
public void AddBalance(MoneyToCharge amount)
{
Balance += amount;
}