Subversion Repositories SmartDukaan

package in.shop2020.serving.controllers;

import in.shop2020.config.ConfigException;
import in.shop2020.datalogger.EventType;
import in.shop2020.payments.Attribute;
import in.shop2020.payments.Payment;
import in.shop2020.payments.PaymentException;
import in.shop2020.payments.PaymentStatus;
import in.shop2020.serving.services.CommonPaymentService;
import in.shop2020.thrift.clients.PaymentClient;
import in.shop2020.thrift.clients.TransactionClient;
import in.shop2020.thrift.clients.UserClient;
import in.shop2020.thrift.clients.config.ConfigClient;
import in.shop2020.utils.DataLogger;

import java.io.StringReader;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.TreeMap;

import javax.servlet.http.HttpServletRequest;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

import org.apache.log4j.Logger;
import org.apache.thrift.TException;
import org.w3c.dom.*;
import org.xml.sax.InputSource;

@SuppressWarnings("serial")
public class InnovitiPayResponseController extends BaseController{

        private static Logger log = Logger.getLogger(Class.class);

        private static final String TXN_REF_NO = "txnRefNo";
        private static final String AUTH_CODE = "authCode";
        
        private static String successUrl;
        private static String errorUrl;

        /**
         * The secret key used to decode RC4 encoded data.
         */
        private static String accountKey;

        private static String salt;
        
        private String redirectUrl;

        static{
                try {
                        successUrl = ConfigClient.getClient().get("ebs_success_url");
                        errorUrl = ConfigClient.getClient().get("ebs_error_url");
                        accountKey = ConfigClient.getClient().get("innoviti_account_id");
                        salt = ConfigClient.getClient().get("innoviti_secret_key");
                } catch (ConfigException e) {
                        log.error("Unable to get success and error usr info from config server.");
                }
        }

        private Map<String, String> paymentParams = new TreeMap<String, String>();

        public String create() {
//              String gatewayTxnId = request.getParameter("mihpayid");
//              String status = request.getParameter("status");
//              String key = request.getParameter("key");
//              String mode = request.getParameter("mode");
//              String txnid = request.getParameter("txnid");
//              String amount = request.getParameter("amount");
//              String hash  = request.getParameter("hash");
//              String bank_ref_num  = request.getParameter("bank_ref_num");
//              String PG_TYPE  = request.getParameter("PG_TYPE");
//              String Error  = request.getParameter("Error");
//              String unmappedstatus  = request.getParameter("unmappedstatus");
//              

                updatePaymentParams(request.getParameter("transresponse"));

                PaymentClient paymentServiceClient = null;
                TransactionClient transactionServiceClient = null;
                UserClient userServiceClient = null;
                try {
                        paymentServiceClient = new PaymentClient();
                        transactionServiceClient = new TransactionClient();
                        userServiceClient = new UserClient();
                } catch (Exception e) {
                        log.error("Unable to initialize one of the clients", e);
                }


                long merchantPaymentId = Long.parseLong(paymentParams.get("orderId"));
                String gatewayPaymentId = paymentParams.get("UnipayId");
                //double amount = Double.parseDouble(paymentParams.get("amount"));
                String gatewayTxnStatus = paymentParams.get("resCode");
                String gatewayTxnStatusDescription = paymentParams.get("resmsg");

                String authCode = paymentParams.get("authCode");
                String txnRefNo = paymentParams.get("txnRefNo");
                String txnDate = paymentParams.get("txnDate");
                String txnTime = paymentParams.get("txnTime");
                String hash = paymentParams.get("checkSum");
                
                List<Attribute> attributes = new ArrayList<Attribute>();
                attributes.add(new Attribute(TXN_REF_NO, txnRefNo));
                attributes.add(new Attribute(AUTH_CODE, authCode));
                
                Payment payment = null;
                Long txnId = null;
                try {
                        payment = paymentServiceClient.getClient().getPayment(merchantPaymentId);
                        txnId = payment.getMerchantTxnId();
                } catch (PaymentException e1) {
                        log.error("Payment exception. It is serious, check merchant payment id + " + merchantPaymentId, e1);
                } catch (TException e1) {
                        log.error("Thrift exception. Check payment id "+ merchantPaymentId, e1);
                }

                if(!validatePaymentParams(merchantPaymentId, gatewayPaymentId, gatewayTxnStatus, gatewayTxnStatusDescription, hash)){
                        this.redirectUrl = errorUrl + "?paymentId=" + merchantPaymentId;
                        return "index";
                }

                if(gatewayTxnStatus.equalsIgnoreCase("00")){
                        //Update payment status as authorized if payment is authorized.
                        try {
                                paymentServiceClient.getClient().updatePaymentDetails(merchantPaymentId, gatewayPaymentId,
                                                "", gatewayTxnStatus, gatewayTxnStatusDescription, "", authCode, txnRefNo, "", PaymentStatus.SUCCESS, txnDate + " " + txnTime, attributes);
                        } catch (PaymentException e) {
                                log.error("Unable to mark the payment as authorized", e);
                        } catch (TException e) {
                            log.error("Unable to mark the payment as authorized", e);
                        }


                        CommonPaymentService.processSuccessfulTxn(txnId, userServiceClient, transactionServiceClient, false);
            this.redirectUrl = successUrl + "?paymentId=" + merchantPaymentId;  

                        
                }else{
                        try {
                                paymentServiceClient.getClient().updatePaymentDetails(merchantPaymentId, gatewayPaymentId,
                                                "", gatewayTxnStatus, gatewayTxnStatusDescription, "", authCode, txnRefNo, "", PaymentStatus.FAILED, txnDate + " " + txnTime, attributes);
                        } catch (PaymentException e) {
                            log.error("Unable to mark the payment as failed", e);
                        } catch (TException e) {
                            log.error("Unable to mark the payment as failed", e);
                        }

                        CommonPaymentService.processFailedTxn(txnId, transactionServiceClient);
                        DataLogger.logData(EventType.PAYMENT_FAILURE, getSessionId(), userinfo.getUserId(), userinfo.getEmail(), Long.toString(merchantPaymentId), gatewayPaymentId,
                    gatewayTxnStatus, "Payment Failed at PG");

                        this.redirectUrl = errorUrl + "?paymentId=" + merchantPaymentId;
                }

                log.info("User will be redirected to: " + this.redirectUrl);
                return "index";
        }

        private boolean validatePaymentParams(long merchantPaymentId, String gatewayPaymentId, String gatewayTxnStatus, String gatewayTxnStatusDescription, String hash) {
                if(!hash.equals(getSecureHash(merchantPaymentId, gatewayPaymentId, gatewayTxnStatus, gatewayTxnStatusDescription))){
                        // We did not request this payment or the authorised amount is different.
                        log.error("Checks and balance failed on returned data");
                        return false;
                }
                return true;
        }


        public String getSecureHash(long merchantPaymentId, String gatewayPaymentId, String gatewayTxnStatus, String gatewayTxnStatusDescription){
                try{
                        String pass =  merchantPaymentId + "|" + accountKey + "|"  + gatewayPaymentId + "|" + gatewayTxnStatus + "|" + gatewayTxnStatusDescription +  "|" + salt;
                        System.out.println(pass);
                        MessageDigest md = MessageDigest.getInstance("MD5");
                        md.update(pass.getBytes(), 0, pass.getBytes().length);
                        byte[] mdbytes = md.digest();
                        //      convert the byte to hex format method
                        StringBuffer sb = new StringBuffer();
                        for (int i = 0; i < mdbytes.length; i++) {
                                sb.append(Integer.toString((mdbytes[i] & 0xff) + 0x100, 16).substring(1));
                        }
                        return sb.toString();
                }catch(NoSuchAlgorithmException nsae){
                        log.error("No such algorithm exception");
                        return null;
                }
        }

        private void updatePaymentParams(String xmlString){
                System.out.println(xmlString);
                try{
                        DocumentBuilder db = DocumentBuilderFactory.newInstance().newDocumentBuilder();
                        InputSource is = new InputSource();
                        is.setCharacterStream(new StringReader(xmlString));
        
                        org.w3c.dom.Document doc = db.parse(is);
                        NodeList nodes = doc.getElementsByTagName("sres");
                        
                        Element element = (Element) nodes.item(0);
        
                        NodeList name = element.getElementsByTagName("orderId");
                        Element line = (Element) name.item(0);
                        System.out.println("orderId: " + getCharacterDataFromElement(line));
                        paymentParams.put("orderId", getCharacterDataFromElement(line));
                        
                        name = element.getElementsByTagName("merchantId");
                        line = (Element) name.item(0);
                        System.out.println("merchantId: " + getCharacterDataFromElement(line));
                        paymentParams.put("merchantId", getCharacterDataFromElement(line));
        
                        name = element.getElementsByTagName("resCode");
                        line = (Element) name.item(0);
                        System.out.println("resCode: " + getCharacterDataFromElement(line));
                        paymentParams.put("resCode", getCharacterDataFromElement(line));
                        
                        name = element.getElementsByTagName("resmsg");
                        line = (Element) name.item(0);
                        System.out.println("resmsg: " + getCharacterDataFromElement(line));
                        paymentParams.put("resmsg", getCharacterDataFromElement(line));
                        
                        name = element.getElementsByTagName("checkSum");
                line = (Element) name.item(0);
                        System.out.println("checkSum: " + getCharacterDataFromElement(line));
                        paymentParams.put("checkSum", getCharacterDataFromElement(line));
                        
                        nodes = element.getElementsByTagName("respEmi");
                Element emiElement = (Element) nodes.item(0);
                
                nodes = emiElement.getElementsByTagName("isCtx");
                emiElement = (Element) nodes.item(0);
                
                name = emiElement.getElementsByTagName("flag");
                line = (Element) name.item(0);
                        System.out.println("flag: " + getCharacterDataFromElement(line));
                        paymentParams.put("flag", getCharacterDataFromElement(line));
                        
                        name = emiElement.getElementsByTagName("processingFee");
                line = (Element) name.item(0);
                        System.out.println("processingFee: " + getCharacterDataFromElement(line));
                        paymentParams.put("processingFee", getCharacterDataFromElement(line));
                        
                        name = emiElement.getElementsByTagName("interest");
                line = (Element) name.item(0);
                        System.out.println("interest: " + getCharacterDataFromElement(line));
                        paymentParams.put("interest", getCharacterDataFromElement(line));
                        
                        
                        nodes = element.getElementsByTagName("respDet");
                element = (Element) nodes.item(0);
            
                name = element.getElementsByTagName("txnRefNo");
                line = (Element) name.item(0);
                        System.out.println("txnRefNo: " + getCharacterDataFromElement(line));
                        paymentParams.put("txnRefNo", getCharacterDataFromElement(line));
                    
        
                name = element.getElementsByTagName("UnipayId");
                line = (Element) name.item(0);
                        System.out.println("UnipayId: " + getCharacterDataFromElement(line));
                        paymentParams.put("UnipayId", getCharacterDataFromElement(line));
                        
                name = element.getElementsByTagName("rrnNo");
                line = (Element) name.item(0);
                        System.out.println("rrnNo: " + getCharacterDataFromElement(line));
                        paymentParams.put("rrnNo", getCharacterDataFromElement(line));
                        
                        name = element.getElementsByTagName("authCode");
                line = (Element) name.item(0);
                        System.out.println("authCode: " + getCharacterDataFromElement(line));
                        paymentParams.put("authCode", getCharacterDataFromElement(line));
                        
                        name = element.getElementsByTagName("txnDate");
                line = (Element) name.item(0);
                        System.out.println("txnDate: " + getCharacterDataFromElement(line));
                        paymentParams.put("txnDate", getCharacterDataFromElement(line));
                        
                        name = element.getElementsByTagName("txnTime");
                line = (Element) name.item(0);
                        System.out.println("txnTime: " + getCharacterDataFromElement(line));
                        paymentParams.put("txnTime", getCharacterDataFromElement(line));
                        
                }catch (Exception e) {
                        // TODO: handle exception
                        //  throws ParserConfigurationException, SAXException, IOException
                }
        }

        public static String getCharacterDataFromElement(Element e) {
                Node child = e.getFirstChild();
                if (child instanceof CharacterData) {
                        CharacterData cd = (CharacterData) child;
                        return cd.getData();
                }
                return "";
        }

        public String getRedirectUrl(){
                return this.redirectUrl;
        }

        @Override
        public void setServletRequest(HttpServletRequest request) {
                this.request = request;
        }

        public Map<String, String> getPaymentParams() {
                return paymentParams;
        }
}