private async Task CallPosTransactWebService(string fromAccountNumber, string toAccountNumber, string cardSerialNumberFrom, string cardSerialNumberTo, long?amount, TransactionType transactionType, TLV emvData)
{
Device.BeginInvokeOnMainThread(() =>
{
gridProgress.IsVisible = true;
});
try
{
Proxies.DCEMVDemoServerClient client = SessionSingleton.GenDCEMVServerApiClient();
using (SessionSingleton.HttpClient)
{
POSTransaction posTx = new POSTransaction();
posTx.InvItems = ConvertLineItems(basketItems.ToList());
CardTransferTransaction tx = new CardTransferTransaction()
{
Amount = amount.Value,
AccountFrom = fromAccountNumber,
AccountTo = toAccountNumber,
CardSerialFrom = cardSerialNumberFrom,
CardSerialTo = cardSerialNumberTo,
CardFromEMVData = TLVasJSON.ToJSON(emvData),
};
await client.StoreSalebycardPostAsync(tx.ToJsonString(), posTx.ToJsonString());
}
}
catch (Exception ex)
{
throw ex;
}
finally
{
Device.BeginInvokeOnMainThread(() =>
{
gridProgress.IsVisible = false;
});
}
}
public void CardTransfer(string json)
{
CardTransferTransaction tx = CardTransferTransaction.FromJsonString(json);
if (tx.Amount == 0)
{
throw new ValidationException("Invalid Amount");
}
TLV tlv = TLVasJSON.FromJSON(tx.CardFromEMVData);
byte[] arpc = VerifyCardSignature(tlv);
if (arpc == null)
{
throw new ValidationException("ARQC failure");
}
//TODO: only accept transactions from DC EMV cards, not EMV cards
switch (tx.TransactionType)
{
case TransactionType.SendMoneyFromAppToCard:
if (!Validate.GuidValidation(tx.AccountFrom))
{
throw new ValidationException("Invalid AccountNumberFrom");
}
if (String.IsNullOrEmpty(tx.CardSerialTo))
{
throw new ValidationException("Invalid CardSerialNumberTo");
}
if (!String.IsNullOrEmpty(tx.AccountTo))
{
throw new ValidationException("Invalid AccountNumberTo");
}
if (!String.IsNullOrEmpty(tx.CardSerialFrom))
{
throw new ValidationException("Invalid CardSerialNumberFrom");
}
break;
case TransactionType.SendMoneyFromCardToApp:
if (!String.IsNullOrEmpty(tx.AccountFrom))
{
throw new ValidationException("Invalid AccountNumberFrom");
}
if (!String.IsNullOrEmpty(tx.CardSerialTo))
{
throw new ValidationException("Invalid CardSerialNumberTo");
}
if (!Validate.GuidValidation(tx.AccountTo))
{
throw new ValidationException("Invalid AccountNumberTo");
}
if (String.IsNullOrEmpty(tx.CardSerialFrom))
{
throw new ValidationException("Invalid CardSerialNumberFrom");
}
break;
default:
throw new ValidationException("Invalid transaction type: " + tx.TransactionType);
}
TransactionPM tpm = new TransactionPM()
{
Amount = tx.Amount,
TransactionType = tx.TransactionType,
AccountNumberIdFromRef = tx.AccountFrom,
AccountNumberIdToRef = tx.AccountTo,
CardSerialNumberIdFrom = tx.CardSerialFrom,
CardSerialNumberIdTo = tx.CardSerialTo,
CardFromEMVData = tx.CardFromEMVData
};
_transactionRepository.AddCardBasedTransaction(tpm, GetCurrentUserId());
}
public Account GetAccountTransactions()
{
AccountPM account = accountsRepository.GetTransactionsForUser(GetCurrentUserId());
Account accountDetails = new Account()
{
AccountNumberId = account.AccountNumberId,
AccountState = account.AccountState,
CustomerType = account.CustomerType,
FirstName = account.FirstName,
LastName = account.LastName,
BusinessName = account.BusinessName,
CompanyRegNumber = account.CompanyRegNumber,
TaxNumber = account.TaxNumber,
Balance = account.Balance,
};
account.TransactionsFrom.ForEach(x =>
{
CardTransferTransaction tx = new CardTransferTransaction()
{
AccountFrom = x.AccountNumberIdFromRef,
//AccountTo = x.AccountNumberIdToRef,
Amount = x.Amount,
TransactionType = x.TransactionType,
DateTime = x.TransactionDateTime,
TransactionId = x.TransactionId,
};
accountDetails.TransferFromTransactions.Add(tx);
});
account.TransactionsTo.ForEach(x =>
{
CardTransferTransaction tx = new CardTransferTransaction()
{
//AccountFrom = x.AccountNumberIdFromRef,
AccountTo = x.AccountNumberIdToRef,
Amount = x.Amount,
TransactionType = x.TransactionType,
DateTime = x.TransactionDateTime,
TransactionId = x.TransactionId,
};
accountDetails.TransferToTransactions.Add(tx);
});
account.POSTransactionsTo.ForEach(x =>
{
POSTransaction tx = new POSTransaction()
{
AccountNumberId = x.AccountNumberIdToRef,
TransactionDateTime = x.TransactionDateTime,
TransactionId = x.TransactionIdRef,
POSTransactionId = x.POSTransactionId,
};
accountDetails.POSTransactions.Add(tx);
});
account.CCTopUpTransactions.ForEach(x =>
{
CCTopUpTransaction tx = new CCTopUpTransaction()
{
AccountNumberId = x.AccountNumberIdToRef,
Amount = x.Amount,
DateTime = x.TransactionDateTime,
};
accountDetails.TopUpTransactions.Add(tx);
});
return(accountDetails);
}
public void AddCardBasedPOSTransaction(string jsonTx, string jsonPosTx)
{
CardTransferTransaction transaction = CardTransferTransaction.FromJsonString(jsonTx);
POSTransaction posDetail = POSTransaction.FromJsonString(jsonPosTx);
if (transaction.Amount == 0)
{
throw new ValidationException("Invalid Amount");
}
//TODO: make sure data in EMV matches duplicate data fields in transaction
TLV tlv = TLVasJSON.FromJSON(transaction.CardFromEMVData);
TLV _9F02 = tlv.Children.Get(EMVTagsEnum.AMOUNT_AUTHORISED_NUMERIC_9F02_KRN.Tag);
long emvAmount = FormattingUtils.Formatting.BcdToLong(_9F02.Value);
if (transaction.Amount != emvAmount)
{
throw new ValidationException("Invalid Amount: Card does not match Cryptogram");
}
if (TransactionController.VerifyCardSignature(tlv) == null)
{
throw new ValidationException("Invalid Cryptogram");
}
transaction.TransactionType = TransactionType.SendMoneyFromCardToApp;
switch (transaction.TransactionType)
{
case TransactionType.SendMoneyFromCardToApp:
if (!String.IsNullOrEmpty(transaction.AccountFrom))
{
throw new ValidationException("Invalid AccountNumberFrom");
}
if (!String.IsNullOrEmpty(transaction.CardSerialTo))
{
throw new ValidationException("Invalid CardSerialNumberTo");
}
if (!Validate.GuidValidation(transaction.AccountTo))
{
throw new ValidationException("Invalid AccountNumberTo");
}
if (String.IsNullOrEmpty(transaction.CardSerialFrom))
{
throw new ValidationException("Invalid CardSerialNumberFrom");
}
break;
default:
throw new ValidationException("Invalid transaction type: " + transaction.TransactionType);
}
if (posDetail.InvItems == null || posDetail.InvItems.Count == 0)
{
throw new ValidationException("Invalid items");
}
TransactionPM txpm = new TransactionPM()
{
TransactionType = transaction.TransactionType,
AccountNumberIdFromRef = transaction.AccountFrom,
AccountNumberIdToRef = transaction.AccountTo,
CardSerialNumberIdFrom = transaction.CardSerialFrom,
CardSerialNumberIdTo = transaction.CardSerialTo,
Amount = transaction.Amount,
CardFromEMVData = transaction.CardFromEMVData,
};
List <POSTransactionItemPM> items = new List <POSTransactionItemPM>();
posDetail.InvItems.ForEach(x =>
{
POSTransactionItemPM tipm = new POSTransactionItemPM()
{
Amount = x.Amount,
Name = x.Name,
Quantity = x.Quantity,
InventoryItemId = x.InventoryItemId,
};
items.Add(tipm);
});
POSTransactionPM posTxpm = new POSTransactionPM()
{
POSTransactionItems = items,
};
_posRepository.AddPOSTransaction(txpm, posTxpm, GetCurrentUserId());
}
