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.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 org.apache.log4j.Logger;
import org.apache.thrift.TException;

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

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

        private static final String BANK_REF_ID = "BankRefId";
        private static final String UNMAPPED_STATUS = "UnMappedStatus";
        
        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("payu_account_id");
                        salt = ConfigClient.getClient().get("payu_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.getParameterMap());

                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("txnid"));
                String gatewayPaymentId = paymentParams.get("mihpayid");
                double amount = Double.parseDouble(paymentParams.get("amount"));
                String gatewayTxnStatus = paymentParams.get("status");
                String hash = paymentParams.get("hash");
                String bankRefId = paymentParams.get("bank_ref_num");
                String unmappedStatus  = paymentParams.get("unmappedstatus");
                

                List<Attribute> attributes = new ArrayList<Attribute>();
                attributes.add(new Attribute(BANK_REF_ID, bankRefId));
                attributes.add(new Attribute(UNMAPPED_STATUS, unmappedStatus));

                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(amount, payment, hash)){
                        this.redirectUrl = errorUrl + "?paymentId=" + merchantPaymentId;
                        return "index";
                }

                if(gatewayTxnStatus.equalsIgnoreCase("SUCCESS")){
                        //Update payment status as authorized if payment is authorized.
                        try {
                                paymentServiceClient.getClient().updatePaymentDetails(merchantPaymentId, gatewayPaymentId,
                                                "", gatewayTxnStatus, "Transaction Authorized at PG", "", "", "", "", PaymentStatus.AUTHORIZED, "", 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, "Payment Failed at PG", "", "", "", "", PaymentStatus.FAILED, "", 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(double returnedAmount, Payment payment, String hash){
                if(!(payment != null && Math.abs(payment.getAmount() - returnedAmount) <= 0.50 && hash.equals(getSecureHash()))){
                        // 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(){
                try{
                        String pass = salt + "|" + paymentParams.get("status") + "|||||||||||" + paymentParams.get("email") + "|" +  paymentParams.get("firstname") + "|" + paymentParams.get("productinfo") + "|" + paymentParams.get("amount") + "|" + paymentParams.get("txnid") + "|" + accountKey;
                        System.out.println(pass);
                        MessageDigest md = MessageDigest.getInstance("SHA-512");
                        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(Map map){
                for(Object key : map.keySet()){
                    String keyStr = (String)key;
                    String[] vals = (String[])map.get(keyStr);
                    String value = vals[0];
                    System.out.println("Key " + (String)key + "     :    " + value);
                    paymentParams.put(keyStr, value);
                }
        }

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

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

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