Subversion Repositories SmartDukaan

package in.shop2020.serving.services;

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

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.StringReader;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;

import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathExpressionException;
import javax.xml.xpath.XPathFactory;

import org.apache.log4j.Logger;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;

public class EbsPaymentService implements IPaymentService{
        
        private static Logger log = Logger.getLogger(Class.class);
        
        public static final String STATUS = "status";
        public static final String ERR_CODE = "errorCode";
        public static final String ERROR = "error";
        public static final String TXN_ID = "transactionId";
        public static final String PAYMENT_ID = "paymentId";
        public static final String AMOUNT = "amount";
        public static final String DATE_TIME = "dateTime";
        public static final String MODE = "mode";
        public static final String REF_NO = "referenceNo";
        public static final String TXN_TYPE = "transactionType";
        
        
    private static String accountId;
    private static String secretKey;
    
        static{
                try {
                        accountId = ConfigClient.getClient().get("ebs_account_id");
                        secretKey = ConfigClient.getClient().get("ebs_secret_key");
                } catch (ConfigException e) {
                        log.error("Unable to get EBS payment configuration.");
                }
        }
        
        private int gatewayId=2;
        private double amount;
        private long paymentId;
        
        public long createPayment(long currentCartId, long userId, long txnId){
                log.info("Creating payment for the txn#: " + txnId + " for the user: " + userId);
                CommonPaymentService cps = new CommonPaymentService();
                if(!cps.createPayment(currentCartId, userId, txnId, gatewayId)){
                        log.error("Error while creating the basic payment");
                        return PAYMENT_NOT_CREATED;
                }
                
                paymentId = cps.getPaymentId();
                amount = cps.getAmount();
                return paymentId;
        }
        
        public static Map<String, String> capturePayment(double amount, String paymentId){
                System.out.println("Capturing amount: Rs " + amount + " for payment Id: " + paymentId);
                URL url = null;
            URLConnection urlConn = null;
            DataOutputStream printout;
            DataInputStream input;
            Map<String, String> resultMap = null;
            try {
                    // URL of CGI-Bin script.
                        url = new URL ("https://secure.ebs.in/api/1_0");
                    // URL connection channel.
                    urlConn = url.openConnection();
                    //urlConn.setRequestMethod("POST");
            } catch (MalformedURLException e1) {
                        log.error("Unable to initialize connection to EBS API server", e1);
                } catch (IOException e) {
                        log.error("Unable to initialize connection to EBS API server", e);
                        e.printStackTrace();
                }

            // Let the run-time system (RTS) know that we want input.
            urlConn.setDoInput (true);
            // Let the RTS know that we want to do output.
            urlConn.setDoOutput (true);
            // No caching, we want the real thing.
            urlConn.setUseCaches (false);
            // Specify the content type.
            urlConn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
            // Send POST output.
            try {
                        printout = new DataOutputStream (urlConn.getOutputStream ());
                    String content =
                            "Action=" + URLEncoder.encode("capture") +
                            "&AccountID=" + URLEncoder.encode(accountId) +
                            "&SecretKey=" + URLEncoder.encode(secretKey) +
                            "&Amount=" + URLEncoder.encode(""+amount) +
                            "&PaymentID=" + URLEncoder.encode(paymentId) +
                            "&submitted=Submit";
                    printout.writeBytes (content);
                    printout.flush ();
                    printout.close ();

                    // Get response data.
                    input = new DataInputStream (urlConn.getInputStream ());
                    resultMap = parseCaptureOutput(input);
                    input.close ();
            } catch (IOException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                }
            return resultMap;
        }

        private static Map<String, String> parseCaptureOutput(DataInputStream in){
                Map<String, String> resultMap = new HashMap<String, String>();
                resultMap.put(STATUS, "");
                
                String str = null;
                try {
                        str = in.readLine();
                        System.out.println(str);
                        log.info("Capture response: " + str);
                } catch (IOException e) {
                        log.error("Error reading the capture response:", e);
                        return resultMap;
                }
                
                InputSource inputSource = new InputSource(new StringReader(str));
                XPath xpath = XPathFactory.newInstance().newXPath();
                String expression = "/output";
                NodeList nodes = null;
                try {
                        nodes = (NodeList) xpath.evaluate(expression, inputSource,      XPathConstants.NODESET);
                } catch(XPathExpressionException xpee) {
                        log.error("Input couldn't be parsed. See capture response for more info.");
                        return resultMap;
                }
                
                Element elem = (Element) nodes.item(0);
                String status = elem.getAttribute(STATUS);
                resultMap.put(STATUS, status);
                if("".equals(status) || !"Processing".equals(status)){
                        //We've received an error. Retrieve the error values
                        resultMap.put(ERR_CODE, elem.getAttribute(ERR_CODE));
                        resultMap.put(ERROR, elem.getAttribute(ERROR));
                }else{
                        resultMap.put(TXN_ID, elem.getAttribute(TXN_ID));
                        resultMap.put(PAYMENT_ID, elem.getAttribute(PAYMENT_ID));
                        resultMap.put(AMOUNT, elem.getAttribute(AMOUNT));
                        resultMap.put(DATE_TIME, elem.getAttribute(DATE_TIME));
                        resultMap.put(MODE, elem.getAttribute(MODE));
                        resultMap.put(REF_NO, elem.getAttribute(REF_NO));
                        resultMap.put(TXN_TYPE, elem.getAttribute(TXN_TYPE));
                }

                log.info("Parsed capture response:");
                for(Entry<String, String> entry : resultMap.entrySet()){
                        log.info("Key: " + entry.getKey() + ", Value: " + entry.getValue());
                }
                
                return resultMap;
        }
        
        public static void main(String[] args){
                capturePayment(30450.00, "2412653");
                
//              <output  transactionId="4793507"  paymentId="2411078"  amount="25005"  dateTime="2011-05-16 09:03:15"  mode="TEST"  referenceNo="4"  transactionType="Captured"  status="Processing"  />";

//              <output  errorCode="2"  error="Invalid Account ID/Secret Key"  />
//              <output  errorCode="12"  error="This payment is failed"  />
//              <output  errorCode="13"  error="This payment is captured already"  />           
        }
}