nPay Integration Example

NpayController.php

<?php
/**
 * Created by PhpStorm.
 * User: bhaktaraz
 * Date: 6/13/18
 * Time: 2:47 PM
 */

namespace Fundprabhu\Bundle\PaymentBundle\Controller;

use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Fundprabhu\Bundle\MainBundle\Entity\Donation;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;

class NpayController extends Controller
{
    /**
     * @param Donation $donation
     * @return array
     */
    public function validateMerchant($donation)
    {
        $merchantId = $this->getParameter('npay_merchant_id');
        $merchantUserName = $this->getParameter('npay_merchant_username');
        $merchantPassword = $this->getParameter('npay_merchant_password');
        $merchantSignaturePassCode = $this->getParameter('npay_merchant_signature');
        $merchantValidateEndpoint = $this->getParameter('npay_validate_merchant_url');

        $merchantTransactionId = $donation->getId();
        $amount = $donation->getAmount();
        $paymentMode = 'SCT';

        $merchantPasswordEncoded = hash('sha256', $merchantUserName.$merchantPassword);
        $signature = hash('sha256', $merchantSignaturePassCode.$merchantUserName.$merchantTransactionId);

        # Initialize webservice with WSDL
        $client = new \SoapClient($merchantValidateEndpoint);

        # Set your parameters for the request
        $params = array(
            "MerchantId" => $merchantId,
            "MerchantTxnId" => $merchantTransactionId,
            "MerchantUserName" => $merchantUserName,
            "MerchantPassword" => $merchantPasswordEncoded,
            "Signature" => $signature,
            "AMOUNT" => $amount,
            "purchaseDescription" => '',
            "PaymentMode" => $paymentMode,
        );

        # Invoke webservice method with parameters, Function Name: ValidateMerchant
        $response = $client->__soapCall("ValidateMerchant", array($params));

        if($response->ValidateMerchantResult->STATUS_CODE != "0")
        {
            $STATUS_CODE = $response->ValidateMerchantResult->STATUS_CODE;
            # Error occured while validating merchant. End process.
            die("Error on validating merchant. <br> Error Code: " . $STATUS_CODE . " <br>MESSAGE: " . $response->ValidateMerchantResult->MESSAGE);
        }

        $data = array();

        $data['processID'] = $response->ValidateMerchantResult->PROCESSID;
        $data['MerchantID'] = $merchantId;
        $data['MerchantTxnID'] = $merchantTransactionId;
        $data['PayAmount'] = $amount;
        $data['MerchantUsername'] = $merchantUserName;
        $data['PaymentMode'] = $paymentMode;

        return $data;
    }

    public function redirectAction(Request $request)
    {
        $donationId = $request->get('donation_id');
        /** @var Donation $donation */
        $donation = $this->getDoctrine()->getRepository(Donation::class)->find($donationId);

        $data = $this->validateMerchant($donation);

        $data['description'] = 'Donation for campaign '.$donation->getCampaign()->getTitle();

        return $this->render('FundprabhuPaymentBundle:Npay:redirect.html.twig', $data);
    }

    public function failureAction(Request $request)
    {
        $em = $this->getDoctrine()->getManager();

        $donationId = $this->get('session')->get('donation_id');
        $donation = $em->getRepository(Donation::class)->find($donationId);

        $em = $this->getDoctrine()->getManager();
        $em->persist($donation);
        $em->flush();

        $this->addFlash('error', 'Unable to make donation for campaign ' . $donation->getCampaign()->getTitle());

        return $this->redirectToRoute('fundprabhu_web_user_donations');
    }

    public function successAction(Request $request)
    {
        $transactionId = $request->get('MERCHANTTXNID');
        $gateWayRefNo = $request->get('GTWREFNO');

        $em = $this->getDoctrine()->getManager();
        $donation = $em->getRepository(Donation::class)->find($transactionId);

        $merchantId = $this->getParameter('npay_merchant_id');
        $merchantUserName = $this->getParameter('npay_merchant_username');
        $merchantPassword = $this->getParameter('npay_merchant_password');
        $merchantSignaturePassCode = $this->getParameter('npay_merchant_signature');
        $merchantValidateEndpoint = $this->getParameter('npay_validate_merchant_url');

        $merchantTransactionId = $donation->getId();

        $merchantPasswordEncoded = hash('sha256', $merchantUserName.$merchantPassword);
        $signature = hash('sha256', $merchantSignaturePassCode.$merchantUserName.$merchantTransactionId);

        # Initialize webservice with WSDL
        $client = new \SoapClient($merchantValidateEndpoint);

        # Set your parameters for the request
        $params = array(
            "MerchantId" => $merchantId,
            "MerchantTxnId" => $transactionId,
            "MerchantUserName" => $merchantUserName,
            "MerchantPassword" => $merchantPasswordEncoded,
            "Signature" => $signature,
            "GTWREFNO" => $gateWayRefNo,
        );

        # Merchant must send query to gateway SOAP to get STATUS against GTWREFNO for transaction verification
        # Invoke webservice method with parameters, Function Name: CheckTransactionStatus
        $response = $client->__soapCall("CheckTransactionStatus", array($params));

        # Print webservice response
//         print_r($response);		// Uncomment to print

        # if successfully query executed, STATUS_CODE is returned as 0 (ZERO) else validation error.
        if($response->CheckTransactionStatusResult->STATUS_CODE != "0")
        {
            $STATUS_CODE = $response->CheckTransactionStatusResult->STATUS_CODE;
            # Error occured while validating merchant. End process.
//            die("Error occured while getting Transaction STATUS . <br> Error Code: " . $STATUS_CODE . " <br>MESSAGE: " . $response->CheckTransactionStatusResult->MESSAGE);
            return false;
        }

        # Proceed as query execution is successful.
        $STATUS_CODE = $response->CheckTransactionStatusResult->STATUS_CODE;
        $TRANSACTION_STATUS = $response->CheckTransactionStatusResult->TRANSACTION_STATUS;
        $AMOUNT = $response->CheckTransactionStatusResult->AMOUNT;
        $MERCHANT_TRANSACTIONID = $response->CheckTransactionStatusResult->MERCHANT_TRANSACTIONID;
        $REMARKS = $response->CheckTransactionStatusResult->REMARKS;
        $GTWREFNO = $response->CheckTransactionStatusResult->GTWREFNO;

        if($TRANSACTION_STATUS == "SUCCESS")
        {
            $transactionAmount = $donation->getAmount();

            if($transactionAmount != $AMOUNT){
                throw new \Exception('Man in the middle attack');
            }

            $donation->setStatus(Donation::DONATION_STATUS_SUCCESS);

            $em->persist($donation);
            $em->flush();

            $this->addFlash('success', 'You have successfully donated for campaign ' . $donation->getCampaign()->getTitle());
        }
        else
        {
            $this->addFlash('error', 'Unable to make donation for campaign ' . $donation->getCampaign()->getTitle());
        }

        return $this->redirectToRoute('fundprabhu_web_user_donations');
    }

    public function deliveryAction(Request $request)
    {
        $transactionId = $request->get('MERCHANTTXNID');
        $gateWayRefNo = $request->get('GTWREFNO');

        $em = $this->getDoctrine()->getManager();

        $donation = $em->getRepository(Donation::class)->find($transactionId);

        $merchantId = $this->getParameter('npay_merchant_id');
        $merchantUserName = $this->getParameter('npay_merchant_username');
        $merchantPassword = $this->getParameter('npay_merchant_password');
        $merchantSignaturePassCode = $this->getParameter('npay_merchant_signature');
        $merchantValidateEndpoint = $this->getParameter('npay_validate_merchant_url');

        $merchantTransactionId = $donation->getId();

        $merchantPasswordEncoded = hash('sha256', $merchantUserName.$merchantPassword);
        $signature = hash('sha256', $merchantSignaturePassCode.$merchantUserName.$merchantTransactionId);

        # Initialize webservice with WSDL
        $client = new \SoapClient($merchantValidateEndpoint);

        # Set your parameters for the request
        $params = array(
            "MerchantId" => $merchantId,
            "MerchantTxnId" => $transactionId,
            "MerchantUserName" => $merchantUserName,
            "MerchantPassword" => $merchantPasswordEncoded,
            "Signature" => $signature,
            "GTWREFNO" => $gateWayRefNo,
        );

        # Merchant must send query to gateway SOAP to get STATUS against GTWREFNO for transaction verification
        # Invoke webservice method with parameters, Function Name: CheckTransactionStatus
        $response = $client->__soapCall("CheckTransactionStatus", array($params));

        # Print webservice response
        // print_r($response);		// Uncomment to print

        # if successfully query executed, STATUS_CODE is returned as 0 (ZERO) else validation error.
        if($response->CheckTransactionStatusResult->STATUS_CODE != "0")
        {
            $STATUS_CODE = $response->CheckTransactionStatusResult->STATUS_CODE;
            # Error occured while validating merchant. End process.
            die("Error occured while getting Transaction STATUS . <br> Error Code: " . $STATUS_CODE . " <br>MESSAGE: " . $response->CheckTransactionStatusResult->MESSAGE);
        }

        # Proceed as query execution is successful.
        $STATUS_CODE = $response->CheckTransactionStatusResult->STATUS_CODE;
        $TRANSACTION_STATUS = $response->CheckTransactionStatusResult->TRANSACTION_STATUS;
        $AMOUNT = $response->CheckTransactionStatusResult->AMOUNT;
        $MERCHANT_TRANSACTIONID = $response->CheckTransactionStatusResult->MERCHANT_TRANSACTIONID;
        $REMARKS = $response->CheckTransactionStatusResult->REMARKS;
        $GTWREFNO = $response->CheckTransactionStatusResult->GTWREFNO;

        # Check Transaction Status and proceed required steps
        if($TRANSACTION_STATUS == "SUCCESS")
        {
            // execute transaction success steps
        }
        else
        {
            // execute transaction failure steps
        }

        # Print '0' (ZERO) value to let gateway know you have received Delivery status successfully.
        return new Response("0", 200);
    }
    
    public function getSctNpayBankListAction(Request $request)
    {
        $merchantId = $this->getParameter('npay_merchant_id');
        $merchantUserName = $this->getParameter('npay_merchant_username');
        $merchantPassword = $this->getParameter('npay_merchant_password');
        $signaturePassCode = $this->getParameter('npay_merchant_signature');
        $merchantValidateEndpoint = $this->getParameter('npay_validate_merchant_url');
        $dateTime = date('Y-m-d h:i:s');

        # Initialize webservice with WSDL
        $client = new \SoapClient($merchantValidateEndpoint);

        $merchantPasswordEncoded = hash('sha256', $merchantUserName.$merchantPassword);
        $signature = hash('sha256', $merchantUserName.$signaturePassCode.$dateTime);

        # Set your parameters for the request
        $params = array(
            "MerchantId" => $merchantId,
            "MerchantUserName" => $merchantUserName,
            "MerchantPassword" => $merchantPasswordEncoded,
            "Signature" => $signature,
            "Datetime" => $dateTime,
        );

        # Invoke webservice method with parameters, Function Name: ValidateMerchant
        $response = $client->__soapCall("EBankLists", array($params));

        $banks = json_decode(json_encode($response->EBankListsResult), True);

        if(array_key_exists('STATUS_CODE', $banks['EBankList'])){
            return null;
        }

        $this->get('logger')->error(json_encode($response->EBankListsResult));

        return $banks['EBankList'];
    }
}