public WithdrawData Withdraw(long ccNumber, string pinCode, int sum)
{
CreditCard creditCard = GetCreditCard(ccNumber);
CheckPinCodeInternal(creditCard, pinCode);
if (creditCard.Balance - sum < 0)
throw new InsufficientFundsException();
DateTime now = DateTime.Now;
using (TransactionScope transaction = new TransactionScope())
{
creditCard.Balance -= sum;
Operation operation = new Operation
{
CreditCardId = creditCard.Id,
Date = now,
Type = OperationType.Withdraw
};
operation.SetMetadata(new WithdrawMetadata
{
Balance = creditCard.Balance,
Withdraw = sum
});
Context.Operations.Add(operation);
Context.SaveChanges();
transaction.Complete();
}
return new WithdrawData
{
Balance = creditCard.Balance,
Date = now,
CreditCardNumber = creditCard.CreditCardNumber,
Withdraw = sum
};
}