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package payeezy.process.paymentgateway.payeezy;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.math.BigDecimal;
import java.net.HttpURLConnection;
import java.net.URL;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import java.time.Instant;
import java.util.ArrayList;
import java.util.Date;
import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;
import javax.ejb.EJB;
import javax.ejb.LocalBean;
import javax.ejb.Stateless;
import org.json.JSONException;
import org.apache.commons.codec.binary.Base64;
import com.crm.businessobject.accounts.CRMBOAccountReceivableBean;
import com.crm.businessobject.billing.CRMBOBillBean;
import com.crm.businessobject.financialtransactions.CRMBOPaymentBean;
import com.crm.businessobject.financialtransactions.CRMBOPaymentCancellationBean;
import com.crm.businessobject.financialtransactions.CRMBOPaymentIntentionBean;
import com.crm.businessobject.paymentgateway.CRMBOPaymentGatewayCardBean;
import com.crm.dataobject.financialtransactions.CRMDOPayment;
import com.crm.dataobject.paymentgateway.CRMDOPaymentGatewayCard;
import com.crm.dataobject.paymentgateway.CRMDOPaymentGatewaySetting;
import com.crm.dataobject.paymentgateway.PaymentGatewayRequestLifeCycleState;
import com.crm.dataobject.platform.CRMDOCurrency;
import com.crm.exception.MandatoryFieldException;
import com.crm.framework.json.JSONArray;
import com.crm.framework.json.JSONObject;
import com.crm.framework.json.JSONUtil;
import com.crm.framework.util.CallList;
import com.crm.framework.util.DateUtil;
import com.crm.framework.util.ExceptionUtil;
import com.crm.process.paymentgateway.CRMProcessPaymentGatewayBean;
import com.crm.process.paymentgateway.CreateAccountParameters;
import com.crm.process.paymentgateway.CreateCardParameters;
import com.crm.process.paymentgateway.CreatePaymentCancellationParameters;
import com.crm.process.paymentgateway.CreatePaymentGatewayAccountResult;
import com.crm.process.paymentgateway.CreatePaymentGatewayCardResult;
import com.crm.process.paymentgateway.CreatePaymentGatewayPaymentCancellationResult;
import com.crm.process.paymentgateway.CreatePaymentGatewayPaymentResult;
import com.crm.process.paymentgateway.CreatePaymentParameters;
import com.crm.process.paymentgateway.DeleteAccountParameters;
import com.crm.process.paymentgateway.DeleteCardParameters;
import com.crm.process.paymentgateway.DeletePaymentGatewayAccountResult;
import com.crm.process.paymentgateway.DeletePaymentGatewayCardResult;
import com.crm.process.paymentgateway.PaymentGatewayCardResult;
import com.crm.process.paymentgateway.PaymentGatewayParameters;
import com.crm.process.paymentgateway.PaymentGatewayResult;
import com.crm.process.paymentgateway.UpdateAccountParameters;
import com.crm.process.paymentgateway.UpdateCardParameters;
import com.crm.process.paymentgateway.UpdatePaymentGatewayAccountResult;
import com.crm.process.paymentgateway.UpdatePaymentGatewayCardResult;
import payeezy.businessobject.paymentgateway.payeezy.PAYEEZYCRMBOPayeezyPaymentGatewaySettingBean;
import payeezy.dataobject.paymentgateway.payeezy.PayeezyMode;
import payeezy.dataobject.paymentgateway.payeezy.PayeezyParameter;
import payeezy.exception.paymentgateway.PaymentGatewayPayeezyException;

@Stateless(mappedName = "ejb/PAYEEZYCRMProcessPayeezyGateway")
@LocalBean
public class PAYEEZYCRMProcessPayeezyGatewayBean extends CRMProcessPaymentGatewayBean {
	private static final long serialVersionUID = 1L;
	private static final String PAYEEZY_PAYMENT_GATEWAY_SUC_LOG_PATH		= "Providers/Payment Gateways/Payeezy_Gateway";
	private static final String PAYEEZY_PAYMENT_GATEWAY_ERROR_LOG_PATH		= "Providers/Payment Gateways/Errors/Payeezy_Gateway";
	private static final String HMAC_SHA256_ALGORITHM 						= "HmacSHA256";
	@EJB private CRMBOPaymentBean paymentBean;
	@EJB private CRMBOPaymentCancellationBean paymentCancellationBean;
	@EJB private CRMBOAccountReceivableBean accountReceivableBean;
	@EJB private CRMBOPaymentIntentionBean paymentIntentionBean;
	@EJB private CRMBOBillBean billBean;
	@EJB private CRMBOPaymentGatewayCardBean paymentGatewayCardBean;
	@EJB private PAYEEZYCRMBOPayeezyPaymentGatewaySettingBean payeezyPaymentGatewaySettingBean;	
	
	protected static Integer timeout = 300 * 1000;

	/**
	 * Default constructor.
	 */
	public PAYEEZYCRMProcessPayeezyGatewayBean() {
		super();
	}
	@Override
	public CreatePaymentGatewayAccountResult processCreateAccount(CreateAccountParameters parameters) throws Exception {
		CreatePaymentGatewayAccountResult result = new CreatePaymentGatewayAccountResult();
		result.setLifeCycleState(PaymentGatewayRequestLifeCycleState.POSTED);
		result.setResponseID(parameters.getAccountNumber());
		return result;
	}
	@Override
	public UpdatePaymentGatewayAccountResult processUpdateAccount(UpdateAccountParameters parameters) throws Exception {
		return null;
	}
	@Override
	public DeletePaymentGatewayAccountResult processDeleteAccount(DeleteAccountParameters parameters) throws Exception {
		return null;
	}
	
	@Override
	public CreatePaymentGatewayCardResult processCreateCard(CreateCardParameters parameters) throws PaymentGatewayPayeezyException, Exception{
		CreatePaymentGatewayCardResult result = new CreatePaymentGatewayCardResult();

		result.setLifeCycleState(PaymentGatewayRequestLifeCycleState.POSTED);
		result.setReferenceNumber(parameters.getToken());
		
		return result;
	}

	@Override
	public UpdatePaymentGatewayCardResult processUpdateCard(UpdateCardParameters parameters) throws Exception {
		return null;
	}
	@Override
	public DeletePaymentGatewayCardResult processDeleteCard(DeleteCardParameters parameters) throws Exception {
		return null;
	}
	
	@Override
	public CreatePaymentGatewayPaymentResult processCreatePayment(CreatePaymentParameters parameters) throws Exception {
		CreatePaymentGatewayPaymentResult result = new CreatePaymentGatewayPaymentResult();
	
		
		String requestStr = null;
		try
		{
			String cardReferenceNumber = parameters.getCardReferenceNumber();
			if(cardReferenceNumber==null)
			{
				throw new MandatoryFieldException(getCRMSession(), "key_card_reference_number");
			}
			CRMDOPaymentGatewayCard paymentGatewayCard = paymentGatewayCardBean.loadByReferenceNumber(cardReferenceNumber, new ArrayList<String>());
			
			String cardHolderName = null;
			String brand = null;
			Integer expirationMonth = null;
			Integer expirationYear = null;
			
			if(paymentGatewayCard!=null)
			{
				cardHolderName = paymentGatewayCard.getHolderName();
				brand = paymentGatewayCard.getBrand();
				expirationMonth = paymentGatewayCard.getExpMonth();
				expirationYear = paymentGatewayCard.getExpYear();
			}
			
			PayeezyConnectionParameters connectionParameters = getConnectionParameters(parameters);
			
			JSONObject request = new JSONObject();
			
			Integer amountInt = parameters.getAmount().multiply(new BigDecimal(100)).intValue();
			String amountStr = amountInt.toString();
			
			ArrayList<String> billNumbers = parameters.getBillNumbers();
			ArrayList<String> invoiceNumbers = parameters.getInvoiceNumbers();
			
			String orderData = "Bills: "+getMetadataList(billNumbers)+" Invoices: "+getMetadataList(invoiceNumbers);
			request.put("method", "token");
			request.put("transaction_type", "purchase");
			request.put("amount", amountStr);
			request.put("order_data ", orderData);
			request.put("currency_code", "USD");			
			request.put("token", getTokenJSON(cardHolderName, cardReferenceNumber, brand, expirationMonth, expirationYear));
			String authorization = getAuthorization(connectionParameters, request.toString());
			String urlStr = connectionParameters.getUrl();
			URL url = new URL(urlStr);
			HttpURLConnection conn = (HttpURLConnection) url.openConnection();
			conn.setDoOutput(true);
			conn.setRequestMethod("POST");
			conn.setRequestProperty("Content-Type", connectionParameters.getContentType());
			conn.setRequestProperty("apiKey", connectionParameters.getApiKey());
			conn.setRequestProperty("token", connectionParameters.getMerchantToken());
			conn.setRequestProperty("Authorization", authorization);
			conn.setRequestProperty("nonce", connectionParameters.getNonce());
			conn.setRequestProperty("timestamp", connectionParameters.getTimestamp());
			
			conn.setDoOutput(true);
			requestStr = getRequest(urlStr,request);
			JSONObject responseJSON = getResponse(conn, request, "Create Payment Request: " +requestStr);
			result = (CreatePaymentGatewayPaymentResult) setTransactionInformation(result, responseJSON);
		}
		catch (Exception e)
		{
			CallList.LogTextFile(getCRMSession(), "Create Payment Request: " +requestStr+") Error: "+ExceptionUtil.getStackTrace(e), PAYEEZY_PAYMENT_GATEWAY_ERROR_LOG_PATH,"");
			result.setErrorDescription(e.getMessage());
			result.setLifeCycleState(PaymentGatewayRequestLifeCycleState.REJECTED);
		}
		
		return result;
	}
	@Override
	public CreatePaymentGatewayPaymentCancellationResult processCreatePaymentCancellation(CreatePaymentCancellationParameters parameters) throws Exception {
		CreatePaymentGatewayPaymentCancellationResult result = new CreatePaymentGatewayPaymentCancellationResult();
		
		String requestStr = null;
		try
		{
			
			ArrayList<String> associations =  new ArrayList<String>();
			associations.add("accountReceivable");
			associations.add("paymentGatewayCard");
			associations.add("accountReceivable.currency");
			
			CRMDOPayment payment 							= paymentBean.loadByReferenceNumber(parameters.getPaymentNumber(), associations);
			String paymentPayeezyRefNumber					= payment.getPaymentGatewayRefNumber();
			CRMDOPaymentGatewayCard paymentGatewayCard 		= payment.getPaymentGatewayCard();
			String transactionTag 							= parameters.getPaymentReferenceNumber();
			Integer amountInt 								= payment.getTotalAmount().multiply(new BigDecimal(100)).intValue();
			String amountStr 								= amountInt.toString();
			String currency 								= payment.getAccountReceivable().getCurrency().getCode();
			String cardReferenceNumber 						= paymentGatewayCard.getReferenceNumber();
			String cardHolderName 							= null;
			String brand 									= null;
			Integer expirationMonth							= null;
			Integer expirationYear 							= null;
			
			if(paymentGatewayCard!=null)
			{
				cardHolderName = paymentGatewayCard.getHolderName();
				brand = paymentGatewayCard.getBrand();
				expirationMonth = paymentGatewayCard.getExpMonth();
				expirationYear = paymentGatewayCard.getExpYear();
			}
			
			PayeezyConnectionParameters connectionParameters = getConnectionParameters(parameters);
			
			JSONObject request = new JSONObject();
			request.put("method", "token");
			request.put("transaction_type", "refund");
			request.put("amount", amountStr);
			request.put("transaction_tag ", transactionTag);
			request.put("currency_code", "USD");			
			request.put("token", getTokenJSON(cardHolderName, cardReferenceNumber, brand, expirationMonth, expirationYear));
			String urlStr = connectionParameters.getUrl()+"/"+paymentPayeezyRefNumber;
			URL url = new URL(urlStr);
			HttpURLConnection conn = (HttpURLConnection) url.openConnection();
			conn.setDoOutput(true);
			conn.setRequestMethod("POST");
			conn.setRequestProperty("Content-Type", connectionParameters.getContentType());
			conn.setRequestProperty("apiKey", connectionParameters.getApiKey());
			conn.setRequestProperty("token", connectionParameters.getMerchantToken());
			conn.setRequestProperty("Authorization", getAuthorization(connectionParameters,request.toString()));
			conn.setRequestProperty("nonce", connectionParameters.getNonce());
			conn.setRequestProperty("timestamp", connectionParameters.getTimestamp());
			conn.setDoOutput(true);

			requestStr = getRequest(urlStr,request);
			JSONObject responseJSON = getResponse(conn, request, "Create Payment Cancellation Request: " +requestStr);
			result = (CreatePaymentGatewayPaymentCancellationResult) setTransactionInformation(result, responseJSON);
		}
		catch (Exception e)
		{
			CallList.LogTextFile(getCRMSession(), "Create Payment Cancellation Request: " +requestStr+") Error: "+ExceptionUtil.getStackTrace(e), PAYEEZY_PAYMENT_GATEWAY_ERROR_LOG_PATH,"");
			result.setErrorDescription(e.getMessage());
			result.setLifeCycleState(PaymentGatewayRequestLifeCycleState.REJECTED);
		}
		
		return result;
	}	
	
	private PaymentGatewayCardResult setCardInformation(PaymentGatewayCardResult card, JSONObject responseJSON) throws Exception{
		
		if(responseJSON!=null)
		{
			JSONObject tokenJSON 	= JSONUtil.getJSONObjectParameter(responseJSON, "token", getCRMSession());
			String status 			= JSONUtil.getStringParameter(responseJSON, "status", getCRMSession());
			
			if(status!=null && status.equalsIgnoreCase("success"))
			{
				card.setLifeCycleState(PaymentGatewayRequestLifeCycleState.POSTED);
			}
			else
			{
				card = (PaymentGatewayCardResult) setErrorInformation(card, responseJSON);
				card.setLifeCycleState(PaymentGatewayRequestLifeCycleState.REJECTED);
			}
			
			if(tokenJSON!=null)
			{
				String cardholderName 	= JSONUtil.getStringParameter(tokenJSON, "cardholder_name", getCRMSession());
				String expDate			= JSONUtil.getStringParameter(tokenJSON, "exp_date", getCRMSession());
				String type 			= JSONUtil.getStringParameter(tokenJSON, "type", getCRMSession());
				String token 			= JSONUtil.getStringParameter(tokenJSON, "value", getCRMSession());
				
				card.setHolderName(cardholderName);
				card.setResponseID(token);
				card.setBrand(payeezyPaymentGatewaySettingBean.getCardBrand(type));
				
				if(expDate!=null)
				{
					Integer expMonth = new Integer(expDate.substring(0,2));
					Integer expYear = new Integer(expDate.substring(2,4))+2000;
					
					card.setExpMonth(expMonth);
					card.setExpYear(expYear);
				}
				
			}
		}
		
		return card;
	}
	private PaymentGatewayResult setTransactionInformation(PaymentGatewayResult result, JSONObject responseJSON) throws Exception{
		if(responseJSON!=null)
		{
			
			String transactionStatus 			= JSONUtil.getStringParameter(responseJSON, "transaction_status", getCRMSession());
			String valisationStatus 			= JSONUtil.getStringParameter(responseJSON, "validation_status", getCRMSession());
			if(valisationStatus!=null && 
					valisationStatus.equalsIgnoreCase("success") && 
					transactionStatus!=null && 
					transactionStatus.equalsIgnoreCase("approved"))
			{
				String transactionTag = JSONUtil.getStringParameter(responseJSON, "transaction_tag", getCRMSession());
				result.setResponseID(transactionTag);
				result.setLifeCycleState(PaymentGatewayRequestLifeCycleState.POSTED);
			}
			else
			{
				result = (CreatePaymentGatewayPaymentResult) setErrorInformation(result, responseJSON);
				result.setLifeCycleState(PaymentGatewayRequestLifeCycleState.REJECTED);
			}
		}
		return result;
	}
	private PaymentGatewayResult setErrorInformation(PaymentGatewayResult result, JSONObject responseJSON) throws Exception{
		String errorCode = "";
		String errorDescription = "";
		
		if(responseJSON!=null)
		{
			JSONObject errorJSON 	= JSONUtil.getJSONObjectParameter(responseJSON, "error", getCRMSession());
			
			if(errorJSON!=null)
			{
				JSONArray messagesJSON = JSONUtil.getJSONArrayParameter(errorJSON, "messages", getCRMSession());
				
				if(messagesJSON!=null)
				{
					for(int i=0;i<messagesJSON.size();i++)
					{
						JSONObject messageJSON = (JSONObject) messagesJSON.get(i);
						if(messageJSON!=null)
						{
							errorCode += JSONUtil.getStringParameter(messageJSON, "code", getCRMSession())+", ";
							errorDescription += JSONUtil.getStringParameter(messageJSON, "description", getCRMSession())+", ";
						}
					}
				}
			}
		}
		
		if(errorCode!=null && !errorCode.isEmpty())
		{
			errorCode = errorCode.substring(0, errorCode.length()-2);
			if(errorCode.length()>32)
			{
				errorCode = errorCode.substring(0, 31);
			}
			
			result.setErrorCode(errorCode);
		}
		
		if(errorDescription!=null && !errorDescription.isEmpty())
		{
			errorDescription = errorDescription.substring(0, errorDescription.length()-2);
			
			result.setErrorDescription(errorDescription);
		}
		return result;
	}
	
	private String getRequest(String url, JSONObject originalRequestJSON) throws Exception{
		
		JSONObject requestJSON = new JSONObject(originalRequestJSON, JSONObject.getNames(originalRequestJSON));
		String request="";
		
		if(url!=null)
		{
			request = "URL:" +url;
		}
		
		if(requestJSON!=null)
		{
			JSONObject creditCardJSON = JSONUtil.getJSONObjectParameter(requestJSON, "credit_card", getCRMSession());
			
			if(creditCardJSON!=null)
			{
				creditCardJSON.remove("cvv");
				String cardNumber 		= JSONUtil.getStringParameter(requestJSON, "card_number", getCRMSession());
				
				if(cardNumber!=null)
				{
					cardNumber = "************"+cardNumber.substring(cardNumber.length()-4,cardNumber.length());
					creditCardJSON.remove("card_number");
				}
				
				creditCardJSON.put("card_number", cardNumber);
			}
			
			request+= ", Request: "+requestJSON.toString();
		}
		
		
		
		return request;
	}
	
	private String getMetadataList(ArrayList<String> list){
		String s = "";
		if(list!=null)
		{
			for(String o:list)
			{
				s += ""+o+",";
			}
			if(s.length()>0)
			{
				s = s.substring(0, s.length()-1);
			}
		}
		return s;
	}
	@Override
	public Boolean isCurrencySupported(CRMDOCurrency currency, CRMDOPaymentGatewaySetting paymentGatewaySetting) throws Exception {
		return payeezyPaymentGatewaySettingBean.isCurrencySupported(currency,paymentGatewaySetting);
	}
	
	private PayeezyConnectionParameters getConnectionParameters(PaymentGatewayParameters parameters) throws NoSuchAlgorithmException{
		PayeezyConnectionParameters connectionParameters = new PayeezyConnectionParameters();
		
		String mode 			= (String) parameters.getGeneralparameter(PayeezyParameter.MODE.toString());
		String apiKey 			= null;
		String merchantToken 	= null;
		String apiSecret 		= null;
		String jsSecurityKey 	= null;
		String transarmorToken 	= null;
		String url				= null;
		String nonce = Long.toString(Math.abs(SecureRandom.getInstance("SHA1PRNG").nextLong()));
		String timestamp =  Long.toString(Instant.now().toEpochMilli());
		
		if(mode!=null && mode.equals(PayeezyMode.TEST.toString()))
		{
			apiKey 			= (String) parameters.getGeneralparameter(PayeezyParameter.TEST_API_KEY.toString());
			merchantToken 	= (String) parameters.getGeneralparameter(PayeezyParameter.TEST_MERCHANT_TOKEN.toString());
			apiSecret 		= (String) parameters.getGeneralparameter(PayeezyParameter.TEST_API_SECRET.toString());
			jsSecurityKey 	= (String) parameters.getGeneralparameter(PayeezyParameter.TEST_JS_SECURITY_KEY.toString());
			transarmorToken = (String) parameters.getGeneralparameter(PayeezyParameter.TEST_TA_TOKEN.toString());
			url				= (String) parameters.getGeneralparameter(PayeezyParameter.TEST_URL.toString());
		}
		else if(mode!=null && mode.equals(PayeezyMode.LIVE.toString()))
		{
			apiKey 			= (String) parameters.getGeneralparameter(PayeezyParameter.LIVE_API_KEY.toString());
			merchantToken 	= (String) parameters.getGeneralparameter(PayeezyParameter.LIVE_MERCHANT_TOKEN.toString());
			apiSecret 		= (String) parameters.getGeneralparameter(PayeezyParameter.LIVE_API_SECRET.toString());
			jsSecurityKey 	= (String) parameters.getGeneralparameter(PayeezyParameter.LIVE_JS_SECURITY_KEY.toString());
			transarmorToken = (String) parameters.getGeneralparameter(PayeezyParameter.LIVE_TA_TOKEN.toString());
			url				= (String) parameters.getGeneralparameter(PayeezyParameter.LIVE_URL.toString());
		}
		
		if(url!=null)
		{
			if(parameters instanceof CreateCardParameters)
			{
				url += "transactions/tokens";
			}
			else if(parameters instanceof CreatePaymentParameters)
			{
				url += "transactions";
			}
			else if(parameters instanceof CreatePaymentCancellationParameters)
			{
				url += "transactions";
			}
		}
		
		connectionParameters.setApiKey(apiKey);
		connectionParameters.setMerchantToken(merchantToken);
		connectionParameters.setUrl(url);
		connectionParameters.setApiSecret(apiSecret);
		connectionParameters.setJsSecurityKey(jsSecurityKey);
		connectionParameters.setContentType("application/json");
		connectionParameters.setTransarmorToken(transarmorToken);
		connectionParameters.setNonce(nonce);
		connectionParameters.setTimestamp(timestamp);
		
		return connectionParameters;
		
	}
	
	public JSONObject getCreditCardJSON(String cardHolderName, String cardNumber, String cardBrand, Integer expMonth, Integer expYear, String cvv) throws Exception {
		JSONObject creditCardJSON=new JSONObject();
		Integer expDate = null;
		
		if(expMonth!=null && expYear!=null)
		{
			expDate = expMonth*100+expYear % 1000;
		}
		
		creditCardJSON.put("type", payeezyPaymentGatewaySettingBean.getCardType(cardBrand));
		creditCardJSON.put("cardholder_name", cardHolderName);
		creditCardJSON.put("card_number", cardNumber);
		creditCardJSON.put("exp_date", expDate);
		creditCardJSON.put("cvv", cvv);
		
		return creditCardJSON;
	}
	public JSONObject getTokenJSON(String cardHolderName, String cardReferenceNumber, String cardBrand, Integer expMonth, Integer expYear) throws Exception {
		JSONObject tokenJSON=new JSONObject();
		tokenJSON.put("token_type", "FDToken");
		JSONObject tokenDataJSON=new JSONObject();
		Integer expDate = null;
		if(expMonth!=null && expYear!=null)
		{
			expDate = expMonth*100+expYear % 1000;
		}
		tokenDataJSON.put("type", payeezyPaymentGatewaySettingBean.getCardType(cardBrand));
		tokenDataJSON.put("cardholder_name", cardHolderName);
		tokenDataJSON.put("value", cardReferenceNumber);
		tokenDataJSON.put("exp_date", expDate);
		tokenJSON.put("token_data", tokenDataJSON);
		return tokenJSON;
	}
	private String getAuthorization(PayeezyConnectionParameters connectionParameters, String request) throws NoSuchAlgorithmException, InvalidKeyException, UnsupportedEncodingException, Exception{		
		
		Mac mac=Mac.getInstance(HMAC_SHA256_ALGORITHM);
		String apiSecret=connectionParameters.getApiSecret();
		SecretKeySpec secret_key = new SecretKeySpec(apiSecret.getBytes(), HMAC_SHA256_ALGORITHM);
		mac.init(secret_key);
		String apikey = connectionParameters.getApiKey();
		String nonce = connectionParameters.getNonce();
		String timeStamp = connectionParameters.getTimestamp();
		String token = connectionParameters.getMerchantToken();
		String payload = request;
		StringBuilder buff=new StringBuilder();
		buff.append(apikey)
		.append(nonce)
		.append(timeStamp);
		if(token!=null){
			buff.append(token);
		}
		if(payload != null){
			buff.append(payload);
		}
		String bufferData = buff.toString();
		//MessageLogger.logMessage(String.format(bufferData));
		byte[] macHash=mac.doFinal(bufferData.getBytes("UTF-8"));
		//MessageLogger.logMessage(Integer.toString(macHash.length));
		//MessageLogger.logMessage(String.format("MacHAsh:{}" , macHash));
		String authorizeString = new String(Base64.encodeBase64(toHex(macHash)));
		//   MessageLogger.logMessage(String.format("Authorize:{}" , authorizeString));

		return authorizeString;
	}
	
	   /**
     * Converts the bytes to Hex bytes
     * @param arr
     * @return
     */
    private byte[] toHex(byte[] arr) {
        String hex= byteArrayToHex(arr);
        return hex.getBytes();
    }
    private String byteArrayToHex(byte[] a) {
        StringBuilder sb = new StringBuilder(a.length * 2);
        for(byte b: a)
            sb.append(String.format("%02x", b & 0xff));
        return sb.toString();
    }
	
	
	@SuppressWarnings("deprecation")
	private JSONObject getResponse(HttpURLConnection conn, JSONObject request, String requestInfo) throws Exception{
		JSONObject responseJSON = null;
		
		CallList.LogTextFile(getCRMSession(), requestInfo, PAYEEZY_PAYMENT_GATEWAY_SUC_LOG_PATH,"");
		
		OutputStream os = conn.getOutputStream();
		os.write(request.toString().getBytes());
		os.flush();
		if (conn.getResponseCode() != HttpURLConnection.HTTP_OK && 
				conn.getResponseCode() != HttpURLConnection.HTTP_CREATED && 
				conn.getResponseCode() != HttpURLConnection.HTTP_ACCEPTED) 
		{
			String errorDescription = "";
			if(conn.getErrorStream()!=null)
			{
				BufferedReader br = new BufferedReader(new InputStreamReader((conn.getErrorStream())));
				if(br!=null)
				{
					errorDescription = br.readLine();
				}
			}
			CallList.LogTextFile(getCRMSession(),requestInfo+"\nError: HTTP error code : "+ conn.getResponseCode()+"\nError Description: "+errorDescription,PAYEEZY_PAYMENT_GATEWAY_ERROR_LOG_PATH,"");
			throw new RuntimeException("Failed : HTTP error code : "+ conn.getResponseCode()+" error description: "+errorDescription);
		}

		BufferedReader br = new BufferedReader(new InputStreamReader((conn.getInputStream())));
		String output;
		Date date = DateUtil.getCurrentDate();
		long startTime = date.getTime();
		long duration = 0;
		while( true )
		{
			duration =DateUtil.getCurrentDate().getTime() - startTime;
			if(duration>timeout)
			{
				throw new Exception("Time out");
			}
			if ((output = br.readLine()) != null) 
			{
				try
				{
					CallList.LogTextFile(getCRMSession(),requestInfo+"\nResponse: "+output,PAYEEZY_PAYMENT_GATEWAY_SUC_LOG_PATH,"");
					break;
				}
				catch (JSONException ex)
				{
				}
			}
			else{
				try {
					Thread.sleep(50);
				} catch (Exception e) {
				}
			}
		}
		conn.disconnect();
		responseJSON = new JSONObject(output);
		
		
		return responseJSON;
	}
}