Subversion Repositories SmartDukaan

package in.shop2020.serving.controllers;

import in.shop2020.config.ConfigException;

import in.shop2020.model.v1.order.LineItem;

import in.shop2020.model.v1.order.Order;

import in.shop2020.model.v1.order.Transaction;

import in.shop2020.model.v1.order.TransactionServiceException;

import in.shop2020.model.v1.order.TransactionStatus;

import in.shop2020.model.v1.user.ShoppingCartException;

import in.shop2020.payments.Attribute;

import in.shop2020.payments.Payment;

import in.shop2020.payments.PaymentException;

import in.shop2020.payments.PaymentService.Client;

import in.shop2020.payments.PaymentStatus;

import in.shop2020.thrift.clients.PaymentServiceClient;

import in.shop2020.thrift.clients.TransactionServiceClient;

import in.shop2020.thrift.clients.UserContextServiceClient;

import in.shop2020.thrift.clients.config.ConfigClient;

import java.io.IOException;

import java.util.HashMap;

import java.util.Map;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.apache.struts2.interceptor.ServletRequestAware;

import org.apache.struts2.interceptor.ServletResponseAware;

import org.apache.thrift.TException;

import org.apache.log4j.Logger;

public class HdfcPayResponseController implements ServletResponseAware, ServletRequestAware{

	private static final long serialVersionUID = 1L;

	private enum PaymentReturnStatus{

		CAPTURED("CAPTURED"),

		NOT_CAPTURED ("NOT CAPTURED"),

		CANCELLED ("CANCELLED"),

		DENIED_BY_RISK("DENIED BY RISK"),

		HOST_TIMEOUT("HOST TIMEOUT");

		private String value;

		PaymentReturnStatus(String value) {

			this.value = value;

		}

		public String value(){

			return this.value;

		}

	}

	HttpServletRequest request;

	HttpServletResponse response;

	//private static Logger log = LoggerFactory.getLogger(HdfcPayResponseController.class);

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

	public static String successUrl;

	public static String errorUrl;

	public static String AMOUNT = "amt";

	public static String TRACKID = "trackid";

	public static String RESULT = "result";

	public static String AUTH = "auth";

	public static String TRANID = "tranid";

	public static String PAYMENTID = "paymentid";

	public static String REF = "ref";

	public static String POSTDATE = "postdate";

	public static String ERROR = "Error";

	public static String ERRORTEXT = "ErrorText";

	public static String UDF5 = "udf5";

	String redirectUrl;

	String amount;

	String trackId;

	String result;

	String postdate;

	String auth;

	String ref;

	String tranId;

	String paymentId;

	String sessionId;

	String errorText;

	String errorNo;

	long txnId;

	long merchantPaymentId;

	Transaction transaction = null;

	static{

		try {

			successUrl = ConfigClient.getClient().get("payment_success_url");

			errorUrl = ConfigClient.getClient().get("payment_error_url");

		} catch (ConfigException e) {

			log.error("Unable to get success and error usr info from config server.");

		}

	}

	public HdfcPayResponseController() {

	}

	public String create() throws IOException, SecurityException{

		log.info("Inside hdfc pay response Create");

		PaymentServiceClient paymentServiceClient = null;

		TransactionServiceClient transactionServiceClient = null;

		UserContextServiceClient userServiceClient = null;

		try{

			paymentServiceClient = new PaymentServiceClient();

			transactionServiceClient = new TransactionServiceClient();

			userServiceClient = new UserContextServiceClient();

		}catch(Exception e){

			//Nothing to worry. lets move forward

			log.error("Unable to initialize one of the clients");

			e.printStackTrace();

		}

		result = this.request.getParameter(RESULT);

		postdate = this.request.getParameter(POSTDATE);

		tranId = this.request.getParameter(TRANID);

		auth = this.request.getParameter(AUTH);

		ref = this.request.getParameter(REF);

		amount = this.request.getParameter(AMOUNT);

		paymentId = this.request.getParameter(PAYMENTID);

		trackId = this.request.getParameter(TRACKID);

		merchantPaymentId = Long.parseLong(trackId);

		sessionId = this.request.getSession().getId();

		errorNo = request.getParameter(ERROR);

		errorText = request.getParameter(ERRORTEXT);

		//FIXME dump them somewhere

		String udf1=request.getParameter("udf1");

		String udf2=request.getParameter("udf2");

		String udf3=request.getParameter("udf3");

		String udf4=request.getParameter("udf4");

		String udf5=request.getParameter(UDF5);

		//FIXME hdfc is sending comma separated amount, which is very disappointing. May be we get more surprises moving forward.

		amount= amount.replace(",", "");

		Client paymentClient = paymentServiceClient.getClient();

		in.shop2020.model.v1.order.TransactionService.Client transactionClient = transactionServiceClient.getClient();

		try {

			Payment payment = paymentClient.getPayment(merchantPaymentId);

			String dbUdf5="";

			double dbAmount = payment.getAmount();

			for(Attribute attribute: payment.getAttributes()){

				if(attribute.getName().trim().equalsIgnoreCase(UDF5)){

					dbUdf5 = attribute.getValue();

				}

			}

			// verify 3 things:  udf5, amount and paymentid

			//FIXME should we first dump the data and than verify these things. ?? 

			log.info(paymentId+ ":"+ payment.getGatewayPaymentId() + "\n" + Double.parseDouble(amount) + ":" + dbAmount + "\n" + dbUdf5 + ":" + udf5 );

			if(!(paymentId.equalsIgnoreCase(payment.getGatewayPaymentId()) && dbAmount == Double.parseDouble(amount) && udf5.equalsIgnoreCase(dbUdf5))){

				log.error("Checks and balance failed on returned date");

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

				return "index";

			}

		} catch (PaymentException e1) {

			log.error("Payment exception. It is serious, check merchant payment id + " + merchantPaymentId);

			e1.printStackTrace();

		} catch (TException e1) {

			log.error("Thrift exception. Check payment id "+ merchantPaymentId);

			e1.printStackTrace();

		}

		if(result != null && result.trim().equals(PaymentReturnStatus.CAPTURED.value())){

			String message = "Payment successful";

			try {

				paymentClient.updatePaymentDetails(merchantPaymentId, paymentId, sessionId, result, message, tranId, auth, ref, errorNo, PaymentStatus.SUCCESS, postdate, null);

			} catch (PaymentException e1) {

				log.error("Unable to update payment details in our database." + e1.getError_code() + e1.getMessage());

				e1.printStackTrace();

			} catch (TException e1) {

				log.error("Unable to update payment details in our database. Thrift exception.");

				e1.printStackTrace();

			}

			Map<Long,Double> items = new HashMap<Long, Double>();

			try {

				txnId = paymentServiceClient.getClient().getPayment(merchantPaymentId).getMerchantTxnId();

				transactionClient.changeTransactionStatus(txnId, TransactionStatus.IN_PROCESS, "Payment received for the order");

				transaction = transactionClient.getTransaction(txnId);

				for(Order order: transaction.getOrders()){

					for(LineItem lineitem: order.getLineitems()){

						Long itemId = lineitem.getItem_id();

						Double quantity = items.get(itemId);

						if(quantity==null){

							quantity = lineitem.getQuantity();

						}

						else{

							quantity= quantity + lineitem.getQuantity();

						}

						items.put(itemId, quantity);

					}

				}	

			} catch (PaymentException e1) {

				log.error("Unable to get transaction id from payment service." + e1.getError_code() + e1.getMessage());

				e1.printStackTrace();

			} catch (TException e1) {

				log.error("Unable to get transaction id from payment service. Thrift Exception" + e1.getMessage());

				e1.printStackTrace();

			} catch (TransactionServiceException e) {

				log.error("Unable to get transaction id from payment service. Thrift Exception" + e.getErrorCode() + e.getMessage());

				e.printStackTrace();

			}

			try {

				//TODO Optimize the function to send less number of data over network

				System.out.println("Transaction shopping cart id is: " + transaction.getShoppingCartid());

				System.out.println("Items to restr in cart are: " + items );

				log.info("Transaction shopping cart id is: " + transaction.getShoppingCartid());

				log.info("Items to restr in cart are: " + items );

				userServiceClient.getClient().resetCart(transaction.getShoppingCartid(), items);	

			}catch (TException e) {

				log.error("Error while updating information in payment database.");

				e.printStackTrace();

				//FIXME Even we get exception we should sent url back to payment gateway. And some thing back channel should be done

			} catch (ShoppingCartException e) {

				log.error("Error while reseting the cart in cart database.");

				e.printStackTrace();

			}

			// Enqueue the email, containing transaction info, to be sent later by batch job  

			try {

				transactionClient.enqueueTransactionInfoEmail(txnId);

			} catch (Exception e) {

				log.error("Error while adding email to depatch queue.");

				e.printStackTrace();

			}

			this.redirectUrl = successUrl + "?paymentId="+merchantPaymentId;

		}

		else	{

			try {

				paymentClient.updatePaymentDetails(merchantPaymentId, paymentId, sessionId, result, errorText, tranId, auth, ref, errorNo, PaymentStatus.FAILED, postdate, null);

			} catch (PaymentException e1) {

				log.error("Unable to update payment details in our database." + e1.getError_code() + e1.getMessage());

				e1.printStackTrace();

			} catch (TException e1) {

				log.error("Unable to update payment details in our database. Thrift exception.");

				e1.printStackTrace();

			}

			try{

				txnId = paymentClient.getPayment(merchantPaymentId).getMerchantTxnId();

				transactionClient.changeTransactionStatus(txnId, TransactionStatus.FAILED, "Payment failed for the transaction.");

			}catch(TException e){

				log.error("Thrift exception while getting information from transaction service.");

				e.printStackTrace();

			} catch (PaymentException e) {

				log.error("Error while getting information from merchant.");

				e.printStackTrace();

			} catch (TransactionServiceException e) {

				log.error("Error while updating status information in transaction database.");

				e.printStackTrace();

			}

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

		}

		return "index";

	}

	public String getRedirectUrl(){

		return this.redirectUrl;

	}

	@Override

	public void setServletRequest(HttpServletRequest request) {

		this.request = request;

		for(Object param: request.getParameterMap().keySet()){

			System.out.println("PARAMS: " + param + " = "+ request.getParameter((String)param));

		}

	}

	@Override

	public void setServletResponse(HttpServletResponse response) {

		this.response = response;

	}

}