// Validate the OTP
private bool ValidateOTP(CustomerToShopKeeperTransaction CtoS)
{
// Get current customer details
var currentCustomerDetails = _changerMintsUOW.Repository <CustomerDetail>().Query().Filter(q => q.NFCTagID ==
CtoS.NFCTagID).Get().FirstOrDefault();
// Get the current customer entity from OTP records
var currentCustomerOTPDetails = _changerMintsUOW.Repository <OTP>().Query().Filter(q => q.CustomerAccountnumber ==
currentCustomerDetails.CustomerAccountNumber && q.OTPNumber == CtoS.OTP).Get().FirstOrDefault();
if (currentCustomerOTPDetails == null)
{
return(false);
}
// Check if the OTP duration is still valid
bool IsOTPDurationValid = DateTime.Compare(currentCustomerOTPDetails.ValidTo, currentCustomerOTPDetails.ValidFrom) > 0 && currentCustomerOTPDetails.IsActive == true ? true : false;
if (IsOTPDurationValid)
{
if (currentCustomerOTPDetails.Hits < int.Parse(ConfigurationManager.AppSettings["OTPExpireTime"]))
{
// Add the hit counter to 1
currentCustomerOTPDetails.Hits++;
currentCustomerOTPDetails.IsActive = false;
_changerMintsUOW.Save();
// Check if the OTP PIN is valid
if (currentCustomerOTPDetails.OTPNumber == CtoS.OTP)
{
return(true);
}
}
else
{
return(false);
}
}
return(false);
}
// Customer to Shopkeeper Transaction
public string CustomerToShopkeeperTransaction(string ChangerQS)
{
_customerToShopkeeper = ChangerUtils.URLSplitter <CustomerToShopKeeperTransaction>(ChangerQS, out IsRequestDTOSuccess);
_crossTransactionResponse = new CrossTransactionResponse();
try {
if (IsRequestDTOSuccess)
{
_crossTransactionResponse = _terminalService.CustomerToShopKeeperTransaction(_customerToShopkeeper);
}
else
{
_crossTransactionResponse.ErrorNumber = 1303;
_crossTransactionResponse.ErrorMessage = ConfigurationManager.AppSettings[_crossTransactionResponse.ErrorNumber.ToString()];
}
} catch (ChangerMintsError Er) {
_logerr.LogError(Er.Message, Er, LogType.Error);
return(ChangerUtils.ResponseConcatenater <ChangerMintsError>(Er, true));
} catch (Exception ex) {
_crossTransactionResponse.ErrorNumber = 2001;
_crossTransactionResponse.ErrorMessage = ConfigurationManager.AppSettings[_crossTransactionResponse.ErrorNumber.ToString()];
}
return(ChangerUtils.ResponseConcatenater <CrossTransactionResponse>(_crossTransactionResponse, true));
}
// Customer to Shopkeeper Transaction Service
public CrossTransactionResponse CustomerToShopKeeperTransaction(CustomerToShopKeeperTransaction CustomerToShopkeeper)
{
_crossTransactionResponse = new CrossTransactionResponse();
try {
var messageCreators = new List <ModelResponses <CrossTransactionResponse, ChangerValidations> > {
// Check if the Shopkeeper Account is of Valid length
new ModelResponses <CrossTransactionResponse, ChangerValidations>(model => model.IsShopKeeperAccountValid(
CustomerToShopkeeper.ShopKeeperAccountNumber), 1101),
// Check if the Customer Account is of Valid length
new ModelResponses <CrossTransactionResponse, ChangerValidations>(model => model.IsCustomerNFCTagIDValid(
CustomerToShopkeeper.NFCTagID), 1202),
// Check if the Amount is of >0
new ModelResponses <CrossTransactionResponse, ChangerValidations>(model => model.IsAmountValid(
CustomerToShopkeeper.Amount), 1401),
};
ModelResponses <CrossTransactionResponse, ChangerValidations> errorCreator = null;
if (!ChangerValidations.GetInputParametersStatus <CrossTransactionResponse, ChangerValidations>(messageCreators, out errorCreator))
{
return(errorCreator.FillErrorDTO <CrossTransactionResponse>());
}
// Get current customer details
var currentCustomerDetails = _changerMintsUOW.Repository <CustomerDetail>().Query().Filter(q => q.NFCTagID ==
CustomerToShopkeeper.NFCTagID).Get().FirstOrDefault();
// Verify if the customer is registered to the changer
if (currentCustomerDetails == null)
{
//Transaction Fail
_crossTransactionResponse.ErrorNumber = 1208;
_crossTransactionResponse.ErrorMessage = ConfigurationManager.AppSettings[_crossTransactionResponse.ErrorNumber.ToString()];
return(_crossTransactionResponse);
}
// Verify if the password matches
if (!(currentCustomerDetails.Password == CustomerToShopkeeper.Password))
{
_crossTransactionResponse.ErrorNumber = 1209;
_crossTransactionResponse.ErrorMessage = ConfigurationManager.AppSettings[_crossTransactionResponse.ErrorNumber.ToString()];
return(_crossTransactionResponse);
}
var currentCustomerNFCDetails = _changerMintsUOW.Repository <CustomerNFCTagDetail>().Query().Filter(q => q.NFCTagID ==
CustomerToShopkeeper.NFCTagID).Get().FirstOrDefault();
if (currentCustomerNFCDetails.NFCTagUID != CustomerToShopkeeper.NFCTagUID)
{
//Transaction Fail - NFCUID mis match
_crossTransactionResponse.ErrorNumber = 1210;
_crossTransactionResponse.ErrorMessage = ConfigurationManager.AppSettings[_crossTransactionResponse.ErrorNumber.ToString()];
return(_crossTransactionResponse);
}
// Get current Customer Account Details
var currentCustomerAccountDetails = _changerMintsUOW.Repository <CustomerAccountDetail>().Query().Filter(q => q.CustomerAccountNumber ==
currentCustomerDetails.CustomerAccountNumber).Get().FirstOrDefault();
// Verify if the customer has account in our system
if (currentCustomerAccountDetails == null)
{
_crossTransactionResponse.ErrorNumber = 1208;
_crossTransactionResponse.ErrorMessage = ConfigurationManager.AppSettings[_crossTransactionResponse.ErrorNumber.ToString()];
return(_crossTransactionResponse);
}
// Get current Shopkeeper Account Details
var currentShopkeeperAccountDetails = _changerMintsUOW.Repository <ShopKeeperAccountDetail>().Query().Filter(q => q.ShopKeeperAccountNumber ==
CustomerToShopkeeper.ShopKeeperAccountNumber).Get().FirstOrDefault();
// Verify if the Shopkeeper has account in our system
if (currentShopkeeperAccountDetails == null)
{
_crossTransactionResponse.ErrorNumber = 1107;
_crossTransactionResponse.ErrorMessage = ConfigurationManager.AppSettings[_crossTransactionResponse.ErrorNumber.ToString()];
return(_crossTransactionResponse);
}
if (currentCustomerAccountDetails.Balance > 0 && currentCustomerAccountDetails.Balance > CustomerToShopkeeper.Amount)
{
var transactionID = GenerateTransactionID();
bool IsOTPRequired = (CustomerToShopkeeper.Amount >= MAXIMUM_TRANSACTION_LIMIT) ? true : false;
if (IsOTPRequired)
{
if (CustomerToShopkeeper.OTP > 0)
{
// OTP is already sent, please validate the records & continue the transaction
bool validateOTPStatus = ValidateOTP(CustomerToShopkeeper);
if (validateOTPStatus)
{
// Start Transaction
currentShopkeeperAccountDetails.ReceiverBalance += CustomerToShopkeeper.Amount;
currentCustomerAccountDetails.Balance -= CustomerToShopkeeper.Amount;
_changerMintsUOW.Repository <ShopKeeperAccountDetail>().Update(currentShopkeeperAccountDetails);
_changerMintsUOW.Repository <CustomerAccountDetail>().Update(currentCustomerAccountDetails);
_changerMintsUOW.Save();
}
else
{
_crossTransactionResponse.ErrorNumber = 1500;
_crossTransactionResponse.ErrorMessage = ConfigurationManager.AppSettings[_crossTransactionResponse.ErrorNumber.ToString()];
return(_crossTransactionResponse);
}
}
else
{
// Generate OTP and send it as SMS to customer
GenerateOTP(transactionID);
// Send the response for Terminal
_crossTransactionResponse.TransactionID = transactionID;
return(_crossTransactionResponse);
}
}
else
{
// Start Transaction
currentShopkeeperAccountDetails.ReceiverBalance += CustomerToShopkeeper.Amount;
currentCustomerAccountDetails.Balance -= CustomerToShopkeeper.Amount;
_changerMintsUOW.Repository <ShopKeeperAccountDetail>().Update(currentShopkeeperAccountDetails);
_changerMintsUOW.Repository <CustomerAccountDetail>().Update(currentCustomerAccountDetails);
_changerMintsUOW.Save();
}
// getting updated details after inserting values into database after transaction success
var getShopkeeperAccountDetails = _changerMintsUOW.Repository <ShopKeeperAccountDetail>().Query().Filter(q => q.ShopKeeperAccountNumber ==
CustomerToShopkeeper.ShopKeeperAccountNumber).Get().FirstOrDefault();
var getCustomerAccountDetails = _changerMintsUOW.Repository <CustomerAccountDetail>().Query().Filter(q => q.CustomerAccountNumber ==
currentCustomerDetails.CustomerAccountNumber).Get().FirstOrDefault();
//updating details in transaction table after transaction sucess
UpdateTransactionDetails <CustomerToShopKeeperTransaction>(CustomerToShopkeeper);
// Fill the Response DTO & send back to the controller
_crossTransactionResponse.ShopKeeperSenderBalance = Convert.ToDecimal(getShopkeeperAccountDetails.SenderBalance);
_crossTransactionResponse.ShopKeeperReceiverBalance = Convert.ToDecimal(getShopkeeperAccountDetails.ReceiverBalance);
_crossTransactionResponse.ErrorNumber = 1302;
_crossTransactionResponse.ErrorMessage = ConfigurationManager.AppSettings[_crossTransactionResponse.ErrorNumber.ToString()];
}
else
{
_crossTransactionResponse.ErrorNumber = 1301;
_crossTransactionResponse.ErrorMessage = ConfigurationManager.AppSettings[_crossTransactionResponse.ErrorNumber.ToString()];
return(_crossTransactionResponse);
}
} catch (Exception e) {
throw e;
}
return(_crossTransactionResponse);
}