public decimal MakeTransaction(TransferHistory transfer)
{
var exchangeAmount = GetExchangeAmount(transfer.ExchangeAmount, transfer.CurrencyCode);
var listOfPreviousTransactions = _dataConnection.GetTransfers().GetAll().ToList();
if (IsUnderTheLimit(exchangeAmount, transfer, listOfPreviousTransactions))
{
transfer.ExchangeAmount = exchangeAmount;
SaveTransaction(transfer);
return(transfer.ExchangeAmount);
}
else
{
throw new Exception("This user can not perform this transfer. This purchase is over the limit for this user");
}
}
