Exemplo n.º 1
0
        public void WithDraw(int accNo, decimal amount, string comment)
        {
            if (amount <= 0)
            {
                throw new ArgumentException(
                          "amount to withdraw must be greater than 0");
            }

            Account acc = Impl.GetAccountByAccountNumber(accNo);

            if (acc is null)
            {
                throw new ArgumentException(
                          "the specified account does not exist");
            }

            decimal serviceFee = 0;

            if (TMImpl.CountChargedTransactions() >=
                TransactionManager.NFreeTransactions)
            {
                serviceFee = TransactionManager.ServiceFee['W'];
            }

            if (acc.Balance - amount - serviceFee < MinBalance[acc.AccountType])
            {
                throw new BalanceTooLowException(
                          "after withdrawal (including service fee), remaining balance "
                          + "would be lower than the minimum balance allowed.");
            }

            Impl.WithDraw(accNo, amount, comment, serviceFee);
        }
Exemplo n.º 2
0
        public void Transfer(int srcNo, int destNo, decimal amount,
                             string comment)
        {
            if (amount <= 0)
            {
                throw new ArgumentException(
                          "amount to transfer must be greater than 0");
            }

            Account srcAcc = Impl.GetAccountByAccountNumber(srcNo);

            if (srcAcc is null)
            {
                throw new ArgumentException(
                          "account to transfer from does not exist");
            }

            Account destAcc = Impl.GetAccountByAccountNumber(destNo);

            if (destAcc is null)
            {
                throw new ArgumentException(
                          "account to transfer to does not exist");
            }

            decimal serviceFee = 0;

            if (TMImpl.CountChargedTransactions() >=
                TransactionManager.NFreeTransactions)
            {
                serviceFee = TransactionManager.ServiceFee['T'];
            }

            if (srcAcc.Balance - amount - serviceFee
                < MinBalance[srcAcc.AccountType])
            {
                throw new BalanceTooLowException(
                          "after transfer (including service fee), remaining balance "
                          + "would be lower than the minimum balance allowed.");
            }

            Impl.Transfer(srcNo, destNo, amount, comment, serviceFee);
        }