/*-
 * ============LICENSE_START=======================================================
 * ECOMP Policy Engine
 * ================================================================================
 * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
 * ================================================================================
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * ============LICENSE_END=========================================================
 */

package org.openecomp.policy.controller;


import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.PrintWriter;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.UUID;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.xml.bind.JAXBElement;

import org.json.JSONObject;
import org.openecomp.policy.adapter.PolicyAdapter;
import org.openecomp.policy.admin.PolicyNotificationMail;
import org.openecomp.policy.admin.RESTfulPAPEngine;
import org.openecomp.policy.dao.PolicyVersionDao;
import org.openecomp.policy.dao.RuleAlgorithmsDao;
import org.openecomp.policy.dao.WatchPolicyNotificationDao;
import org.openecomp.policy.elk.client.PolicyElasticSearchController;
import org.openecomp.policy.rest.dao.BRMSParamTemplateDao;
import org.openecomp.policy.rest.jpa.BRMSParamTemplate;
import org.openecomp.policy.rest.jpa.PolicyVersion;
import org.openecomp.policy.rest.jpa.RuleAlgorithms;
import org.openecomp.portalsdk.core.controller.RestrictedBaseController;
import org.openecomp.portalsdk.core.web.support.UserUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

import com.att.research.xacml.api.XACML3;
import org.openecomp.policy.xacml.api.XACMLErrorConstants;
import org.openecomp.policy.xacml.util.XACMLPolicyScanner;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.google.common.base.Joiner;

import oasis.names.tc.xacml._3_0.core.schema.wd_17.AdviceExpressionType;
import oasis.names.tc.xacml._3_0.core.schema.wd_17.AdviceExpressionsType;
import oasis.names.tc.xacml._3_0.core.schema.wd_17.AllOfType;
import oasis.names.tc.xacml._3_0.core.schema.wd_17.AnyOfType;
import oasis.names.tc.xacml._3_0.core.schema.wd_17.AttributeAssignmentExpressionType;
import oasis.names.tc.xacml._3_0.core.schema.wd_17.AttributeValueType;
import oasis.names.tc.xacml._3_0.core.schema.wd_17.MatchType;
import oasis.names.tc.xacml._3_0.core.schema.wd_17.PolicyType;
import oasis.names.tc.xacml._3_0.core.schema.wd_17.RuleType;
import oasis.names.tc.xacml._3_0.core.schema.wd_17.TargetType;

import org.openecomp.policy.common.logging.flexlogger.FlexLogger; 
import org.openecomp.policy.common.logging.flexlogger.Logger;

@Controller
@RequestMapping("/")
public class CreateBRMSParamController extends RestrictedBaseController {
	private static final Logger logger = FlexLogger.getLogger(CreateBRMSParamController.class);

	private static RuleAlgorithmsDao ruleAlgorithmsDao;
	private static BRMSParamTemplateDao bRMSParamTemplateDao;
	private static PolicyVersionDao policyVersionDao;
	private static WatchPolicyNotificationDao policyNotificationDao;

	@Autowired
	private CreateBRMSParamController(RuleAlgorithmsDao ruleAlgorithmsDao, BRMSParamTemplateDao bRMSParamTemplateDao, PolicyVersionDao policyVersionDao,
			WatchPolicyNotificationDao policyNotificationDao){
		CreateBRMSParamController.policyVersionDao = policyVersionDao;
		CreateBRMSParamController.ruleAlgorithmsDao = ruleAlgorithmsDao;
		CreateBRMSParamController.bRMSParamTemplateDao = bRMSParamTemplateDao;
		CreateBRMSParamController.policyNotificationDao = policyNotificationDao;
	}

	public CreateBRMSParamController(){}
	protected PolicyAdapter policyAdapter = null;
	private ArrayList<Object> attributeList;
	private String ruleID = "";

	private HashMap<String, String> dynamicLayoutMap;

	public String newPolicyID() {
		return Joiner.on(':').skipNulls().join((PolicyController.getDomain().startsWith("urn") ? null: "urn"),
				PolicyController.getDomain().replaceAll("[/\\\\.]", ":"), "xacml", "policy", "id", UUID.randomUUID());
	}

	@RequestMapping(value={"/policyController/getBRMSTemplateData.htm"}, method={org.springframework.web.bind.annotation.RequestMethod.POST})
	public ModelAndView getBRMSParamPolicyRuleData(HttpServletRequest request, HttpServletResponse response) throws Exception{
		dynamicLayoutMap = new HashMap<String, String>();
		ObjectMapper mapper = new ObjectMapper();
		mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
		JsonNode root = mapper.readTree(request.getReader());
		String rule = findRule(root.get("policyData").toString().replaceAll("^\"|\"$", ""));
		generateUI(rule);
		response.setCharacterEncoding("UTF-8");
		response.setContentType("application / json");
		request.setCharacterEncoding("UTF-8");

		PrintWriter out = response.getWriter();
		String responseString = mapper.writeValueAsString(dynamicLayoutMap);
		JSONObject j = new JSONObject("{policyData: " + responseString + "}");
		out.write(j.toString());
		return null;
	}

	protected String findRule(String ruleTemplate) {
		for (BRMSParamTemplate bRMSParamTemplate: bRMSParamTemplateDao.getBRMSParamTemplateData()){
			if(bRMSParamTemplate.getRuleName().equals(ruleTemplate)){
				return bRMSParamTemplate.getRule();
			}
		}
		return null;
	}

	protected void generateUI(String rule) {
		if(rule!=null){
			try {
				String params = "";
				Boolean flag = false;
				Boolean comment = false;
				String lines[] = rule.split("\n");
				for(String line : lines){
					if (line.isEmpty() || line.startsWith("//")) {
						continue;
					}
					if (line.startsWith("/*")) {
						comment = true;
						continue;
					}
					if (line.contains("//")) {
						line = line.split("\\/\\/")[0];
					}
					if (line.contains("/*")) {
						comment = true;
						if (line.contains("*/")) {
							try {
								comment = false;
								line = line.split("\\/\\*")[0]
										+ line.split("\\*\\/")[1].replace("*/", "");
							} catch (Exception e) {
								line = line.split("\\/\\*")[0];
							}
						} else {
							line = line.split("\\/\\*")[0];
						}
					}
					if (line.contains("*/")) {
						comment = false;
						try {
							line = line.split("\\*\\/")[1].replace("*/", "");
						} catch (Exception e) {
							line = "";
						}
					}
					if (comment) {
						continue;
					}
					if (flag) {
						params = params + line;
					}
					if (line.contains("declare Params")) {
						params = params + line;
						flag = true;
					}
					if (line.contains("end") && flag) {
						break;
					}
				}
				params = params.replace("declare Params", "").replace("end", "")
						.replaceAll("\\s+", "");
				String[] components = params.split(":");
				String caption = "";
				for (int i = 0; i < components.length; i++) {
					String type = "";
					if (i == 0) {
						caption = components[i];
					}
					if(caption.equals("")){
						break;
					}
					String nextComponent = "";
					try {
						nextComponent = components[i + 1];
					} catch (Exception e) {
						nextComponent = components[i];
					}
					if (nextComponent.startsWith("String")) {
						type = "String";
						createField(caption, type);
						caption = nextComponent.replace("String", "");
					} else if (nextComponent.startsWith("int")) {
						type = "int";
						createField(caption, type);
						caption = nextComponent.replace("int", "");
					}
				}
			} catch (Exception e) {
				logger.error(XACMLErrorConstants.ERROR_SYSTEM_ERROR + e);
			}
		}
	}

	private String convertDate(String dateTTL) {
		String formateDate = null;
		String[] date  = dateTTL.split("T");
		String[] parts = date[0].split("-");
		
		formateDate = parts[2] + "-" + parts[1] + "-" + parts[0];
		return formateDate;
	}
	
	private void createField(String caption, String type) {
		dynamicLayoutMap.put(caption, type);
	}

	@RequestMapping(value={"/policyController/save_BRMSParamPolicy.htm"}, method={org.springframework.web.bind.annotation.RequestMethod.POST})
	public ModelAndView saveBRMSParamPolicy(HttpServletRequest request, HttpServletResponse response) throws Exception{
		try {
			String userId = UserUtils.getUserIdFromCookie(request);
			RESTfulPAPEngine engine = (RESTfulPAPEngine) PolicyController.getPapEngine();
			ObjectMapper mapper = new ObjectMapper();
			mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
			JsonNode root = mapper.readTree(request.getReader());
			PolicyAdapter policyData = (PolicyAdapter)mapper.readValue(root.get("policyData").get("policy").toString(), PolicyAdapter.class);

			if (policyData.getTtlDate()==null){
				policyData.setTtlDate("NA");
			}else{
				String dateTTL = policyData.getTtlDate();
				String newDate = convertDate(dateTTL);
				policyData.setTtlDate(newDate);
			}
			
			if(root.get("policyData").get("model").get("type").toString().replace("\"", "").equals("file")){
				policyData.isEditPolicy = true;
			}
			if(root.get("policyData").get("model").get("path").size() != 0){
				String dirName = "";
				for(int i = 0; i < root.get("policyData").get("model").get("path").size(); i++){
					dirName = dirName.replace("\"", "") + root.get("policyData").get("model").get("path").get(i).toString().replace("\"", "") + File.separator;
				}
				policyData.setDomainDir(dirName.substring(0, dirName.lastIndexOf(File.separator)));
			}else{
				policyData.setDomainDir(root.get("policyData").get("model").get("name").toString().replace("\"", ""));
			}
			int version = 0;
			int highestVersion = 0;
			int descriptionVersion = 0;
			//get the highest version of policy from policy version table.
			//getting the sub scope domain where the policy is created or updated
			String dbCheckPolicyName = policyData.getDomainDir() + File.separator + "Config_BRMS_Param_" + policyData.getPolicyName();
			List<PolicyVersion> policyVersionList = policyVersionDao.getPolicyVersionEntityByName(dbCheckPolicyName);
			if (policyVersionList.size() > 0) {		
				for(int i = 0;  i < policyVersionList.size(); i++) {
					PolicyVersion entityItem = policyVersionList.get(i);
					if(entityItem.getPolicyName().equals(dbCheckPolicyName)){
						highestVersion = entityItem.getHigherVersion();
					}
				}
			}		
			if(highestVersion != 0){
				version = highestVersion;
				descriptionVersion = highestVersion +1;		
			}else{
				version = 1;
				descriptionVersion = 1;
			}

			//set policy adapter values for Building JSON object containing policy data
			String createdBy = "";
			String modifiedBy = userId;
			if(descriptionVersion == 1){
				createdBy = userId;
			}else{
				String policyName = PolicyController.getGitPath().toAbsolutePath().toString() + File.separator + policyData.getDomainDir() + File.separator + policyData.getOldPolicyFileName() + ".xml";
				File policyPath = new File(policyName);
				try {
					createdBy =	XACMLPolicyScanner.getCreatedBy(policyPath.toPath());
				} catch (IOException e) {
					createdBy = "guest";
				}
			}

			policyData.setPolicyDescription(policyData.getPolicyDescription()+ "@CreatedBy:" +createdBy + "@CreatedBy:" + "@ModifiedBy:" +modifiedBy + "@ModifiedBy:");
			Map<String, String> successMap = new HashMap<String, String>();
			Map<String, String> attributeMap = new HashMap<String, String>();
			//set the Rule Combining Algorithm Id to be sent to PAP-REST via JSON
			List<RuleAlgorithms> ruleAlgorithmsList = ruleAlgorithmsDao.getRuleAlgorithms();
			for (int i = 0; i < ruleAlgorithmsList.size(); i++) {
				RuleAlgorithms a = ruleAlgorithmsList.get(i);
				if (a.getXacmlId().equals(XACML3.ID_RULE_PERMIT_OVERRIDES.stringValue())) {
					policyData.setRuleCombiningAlgId(a.getXacmlId());
					break;
				}
			}
			if(policyData.getAttributes().size() > 0){
				for(Object attribute : policyData.getAttributes()){
					if(attribute instanceof LinkedHashMap<?, ?>){
						String key = ((LinkedHashMap<?, ?>) attribute).get("key").toString();
						String value = ((LinkedHashMap<?, ?>) attribute).get("value").toString();
						attributeMap.put(key, value);	
					}
				}
			}

			policyData.setEcompName("DROOLS");
			policyData.setConfigName("BRMS_PARAM_RULE");
			policyData.setDynamicFieldConfigAttributes(attributeMap);
			//convert drl rule and UI parameters into a map
			Map<String, String> drlRuleAndUIParams = new HashMap<String, String>();
			// If there is any dynamic field create the matches here
			String key="templateName";
			String value=(String) policyData.getRuleName();
			drlRuleAndUIParams.put(key, value);
			System.out.println(policyData.getRuleData());
			if(policyData.getRuleData().size() > 0){
				for(Object keyValue: policyData.getRuleData().keySet()){
					drlRuleAndUIParams.put(keyValue.toString(), policyData.getRuleData().get(keyValue).toString());
				}
			}
			policyData.setBRMSParamBody(drlRuleAndUIParams);
			if (policyData.isEditPolicy()){
				//increment the version and set in policyAdapter
				policyData.setVersion(String.valueOf(version));
				policyData.setHighestVersion(version);
				policyData.setPolicyID(this.newPolicyID());
				policyData.setRuleID(ruleID);
				successMap = engine.updatePolicyRequest(policyData);
			} else {
				//send it for policy creation
				policyData.setVersion(String.valueOf(version));
				policyData.setHighestVersion(version);
				successMap = engine.createPolicyRequest(policyData);

			}

			if (successMap.containsKey("success")) {
				// Add it into our tree
				Path finalPolicyPath = null;
				finalPolicyPath = Paths.get(successMap.get("success"));
				PolicyElasticSearchController controller = new PolicyElasticSearchController();
				controller.updateElk(finalPolicyPath.toString());
				File file = finalPolicyPath.toFile();
				if(file != null){
					String policyName = file.toString();
					String removePath = policyName.substring(policyName.indexOf("repository")+11);
					String removeXml = removePath.replace(".xml", "");
					String removeExtension = removeXml.substring(0, removeXml.indexOf("."));
					List<PolicyVersion> versionList = policyVersionDao.getPolicyVersionEntityByName(removeExtension);
					if (versionList.size() > 0) {		
						for(int i = 0;  i < versionList.size(); i++) {
							PolicyVersion entityItem = versionList.get(i);
							if(entityItem.getPolicyName().equals(removeExtension)){
								version = entityItem.getHigherVersion() +1;
								entityItem.setActiveVersion(version);
								entityItem.setHigherVersion(version);
								entityItem.setModifiedBy(userId);
								policyVersionDao.update(entityItem);
								if(policyData.isEditPolicy){
									PolicyNotificationMail email = new PolicyNotificationMail();
									String mode = "EditPolicy";
									String policyNameForEmail = policyData.getDomainDir() + File.separator + policyData.getOldPolicyFileName() + ".xml";
									email.sendMail(entityItem, policyNameForEmail, mode, policyNotificationDao);
								}
							}
						}
					}else{
						PolicyVersion entityItem = new PolicyVersion();
						entityItem.setActiveVersion(version);
						entityItem.setHigherVersion(version);
						entityItem.setPolicyName(removeExtension);
						entityItem.setCreatedBy(userId);
						entityItem.setModifiedBy(userId);
						policyVersionDao.Save(entityItem);
					}
				}
			}

			response.setCharacterEncoding("UTF-8");
			response.setContentType("application / json");
			request.setCharacterEncoding("UTF-8");

			PrintWriter out = response.getWriter();
			String responseString = mapper.writeValueAsString(successMap);
			JSONObject j = new JSONObject("{policyData: " + responseString + "}");
			out.write(j.toString());
			return null;
		}
		catch (Exception e){
			response.setCharacterEncoding("UTF-8");
			request.setCharacterEncoding("UTF-8");
			PrintWriter out = response.getWriter();
			out.write(e.getMessage());
		}
		return null;
	}

	public void PrePopulateBRMSParamPolicyData(PolicyAdapter policyAdapter) {
		attributeList = new ArrayList<Object>();
		dynamicLayoutMap = new HashMap<String, String>();
		if (policyAdapter.getPolicyData() instanceof PolicyType) {
			PolicyType policy = (PolicyType) policyAdapter.getPolicyData();
			policyAdapter.setOldPolicyFileName(policyAdapter.getPolicyName());
			// policy name value is the policy name without any prefix and
			// Extensions.
			String policyNameValue = policyAdapter.getPolicyName().substring(policyAdapter.getPolicyName().indexOf("BRMS_Param_") +11, policyAdapter.getPolicyName().lastIndexOf("."));
			if (logger.isDebugEnabled()) {
				logger.debug("Prepopulating form data for BRMS RAW Policy selected:" + policyAdapter.getPolicyName());
			}
			policyAdapter.setPolicyName(policyNameValue);
			String description = "";
			try{
				description = policy.getDescription().substring(0, policy.getDescription().indexOf("@CreatedBy:"));
			}catch(Exception e){
				description = policy.getDescription();
			}
			policyAdapter.setPolicyDescription(description);
			// Set Attributes. 
			AdviceExpressionsType expressionTypes = ((RuleType)policy.getCombinerParametersOrRuleCombinerParametersOrVariableDefinition().get(0)).getAdviceExpressions();
			for( AdviceExpressionType adviceExpression: expressionTypes.getAdviceExpression()){
				for(AttributeAssignmentExpressionType attributeAssignment: adviceExpression.getAttributeAssignmentExpression()){
					if(attributeAssignment.getAttributeId().startsWith("key:")){
						Map<String, String> attribute = new HashMap<String, String>();
						String key = attributeAssignment.getAttributeId().replace("key:", "");
						attribute.put("key", key);
						JAXBElement<AttributeValueType> attributevalue = (JAXBElement<AttributeValueType>) attributeAssignment.getExpression();
						String value = (String) attributevalue.getValue().getContent().get(0);
						attribute.put("value", value);
						attributeList.add(attribute);
					}
				}
				policyAdapter.setAttributes(attributeList);
			}
			String ruleConfigName = policyAdapter.getDirPath().replace(File.separator, ".")+ "." + policyAdapter.getOldPolicyFileName() + ".txt";
			policyAdapter.setConfigBodyPath(ruleConfigName);
			paramUIGenerate(policyAdapter);
			// Get the target data under policy.
			policyAdapter.setDynamicLayoutMap(dynamicLayoutMap);
			if(policyAdapter.getDynamicLayoutMap().size() > 0){
				LinkedHashMap<String,String> drlRule = new LinkedHashMap<String, String>();
				for(Object keyValue: policyAdapter.getDynamicLayoutMap().keySet()){
					drlRule.put(keyValue.toString(), policyAdapter.getDynamicLayoutMap().get(keyValue).toString());
				}
				policyAdapter.setRuleData(drlRule);
			}	
			TargetType target = policy.getTarget();
			if (target != null) {
				// Under target we have AnyOFType
				List<AnyOfType> anyOfList = target.getAnyOf();
				if (anyOfList != null) {
					Iterator<AnyOfType> iterAnyOf = anyOfList.iterator();
					while (iterAnyOf.hasNext()) {
						AnyOfType anyOf = iterAnyOf.next();
						// Under AnyOFType we have AllOFType
						List<AllOfType> allOfList = anyOf.getAllOf();
						if (allOfList != null) {
							Iterator<AllOfType> iterAllOf = allOfList.iterator();
							int index = 0;
							while (iterAllOf.hasNext()) {
								AllOfType allOf = iterAllOf.next();
								// Under AllOFType we have Match
								List<MatchType> matchList = allOf.getMatch();
								if (matchList != null) {
									Iterator<MatchType> iterMatch = matchList.iterator();
									while (iterMatch.hasNext()) {
										MatchType match = iterMatch.next();
										//
										// Under the match we have attributevalue and
										// attributeDesignator. So,finally down to the actual attribute.
										//
										AttributeValueType attributeValue = match.getAttributeValue();
										String value = (String) attributeValue.getContent().get(0);

										if (index ==  3){
											policyAdapter.setRiskType(value);
										}

										if (index ==  4){
											policyAdapter.setRiskLevel(value);
										}
										
										if (index ==  5){
											policyAdapter.setGuard(value);
										}
										if (index == 6 && !value.contains("NA")){
											String newDate = convertDate(value, true);
											policyAdapter.setTtlDate(newDate);
										}

										index++;
									}
								}
							}
						}
					}
				}
			}
		} 		
	}

	private String convertDate(String dateTTL, boolean portalType) {
		String formateDate = null;
		String[] date;
		String[] parts;
		
		if (portalType){
			parts = dateTTL.split("-");
			formateDate = parts[2] + "-" + parts[1] + "-" + parts[0] + "T05:00:00.000Z";
		} else {
			date  = dateTTL.split("T");
			parts = date[0].split("-");
			formateDate = parts[2] + "-" + parts[1] + "-" + parts[0];
		}
		return formateDate;
	}
	// This method generates the UI from rule configuration
	private void paramUIGenerate(PolicyAdapter policyAdapter) {
		String fileLocation = null;
		String fileName = policyAdapter.getConfigBodyPath();
		if (fileName != null) {
			fileLocation = PolicyController.getConfigHome();
		}
		if (logger.isDebugEnabled()) {
			logger.debug("Attempting to read file from the location: " + fileLocation);
		}
		if (fileLocation == null) {
			logger.error(XACMLErrorConstants.ERROR_SYSTEM_ERROR + "Error with the FileName: " + fileName);
			return;
		}
		File dir = new File(fileLocation);
		File[] listOfFiles = dir.listFiles();
		for (File file : listOfFiles) {
			if (file.isFile() && file.getName().contains(fileName)
					&& file.toString().endsWith(".txt")) {
				// Reading the file
				try {
					try (BufferedReader br = new BufferedReader(new FileReader(file))) {
						StringBuilder sb = new StringBuilder();
						String line = br.readLine();
						while (line != null) {
							sb.append(line);
							sb.append("\n");
							line = br.readLine();
						}
					}catch(Exception e){
						logger.error(XACMLErrorConstants.ERROR_DATA_ISSUE+ e.getMessage());
					}
					String params = "";
					Boolean flag = false;
					Boolean comment = false;
					for (String line : Files.readAllLines(Paths.get(file.toString()))) {
						if (line.isEmpty() || line.startsWith("//")) {
							continue;
						}
						if(line.contains("<$%BRMSParamTemplate=")){
							String value = line.substring(line.indexOf("<$%"),line.indexOf("%$>"));
							value = value.replace("<$%BRMSParamTemplate=", "");
							policyAdapter.setRuleName(value);
						}
						if (line.startsWith("/*")) {
							comment = true;
							continue;
						}
						if (line.contains("//")) {
							if(!(line.contains("http://") || line.contains("https://"))){
								line = line.split("\\/\\/")[0];
							}
						}
						if (line.contains("/*")) {
							comment = true;
							if (line.contains("*/")) {
								try {
									comment = false;
									line = line.split("\\/\\*")[0]
											+ line.split("\\*\\/")[1].replace(
													"*/", "");
								} catch (Exception e) {
									line = line.split("\\/\\*")[0];
								}
							} else {
								line = line.split("\\/\\*")[0];
							}
						}
						if (line.contains("*/")) {
							comment = false;
							try {
								line = line.split("\\*\\/")[1]
										.replace("*/", "");
							} catch (Exception e) {
								line = "";
							}
						}
						if (comment) {
							continue;
						}
						if (flag) {
							params = params + line;
						}
						if (line.contains("rule \"Params\"")) {
							params = params + line;
							flag = true;
						}
						if (line.contains("end") && flag) {
							break;
						}
					}
					params = params.replaceAll("\\s+", "").replace("rule\"Params\"salience1000whenthenParamsparams=newParams();","")
							.replace("insert(params);end", "")
							.replace("params.set", "");
					String[] components = params.split(";");
					if(components!= null && components.length > 0){
						for (int i = 0; i < components.length; i++) {
							String value = null;
							String caption = components[i].substring(0,
									components[i].indexOf("("));
							caption = caption.substring(0, 1).toLowerCase() + caption.substring(1);
							if (components[i].contains("(\"")) {
								value = components[i]
										.substring(components[i].indexOf("(\""),
												components[i].indexOf("\")"))
										.replace("(\"", "").replace("\")", "");
							} else {
								value = components[i]
										.substring(components[i].indexOf("("),
												components[i].indexOf(")"))
										.replace("(", "").replace(")", "");
							}
							dynamicLayoutMap.put(caption, value);

						}
					}
				} catch (FileNotFoundException e) {
					logger.error(XACMLErrorConstants.ERROR_DATA_ISSUE + e.getMessage());
				} catch (IOException e1) {
					logger.error(XACMLErrorConstants.ERROR_DATA_ISSUE+ e1.getMessage());
				}
			}
		}
	}

	// set View Rule
	@RequestMapping(value={"/policyController/ViewBRMSParamPolicyRule.htm"}, method={org.springframework.web.bind.annotation.RequestMethod.POST})
	public ModelAndView setViewRule(HttpServletRequest request, HttpServletResponse response) throws Exception{
		try {
			ObjectMapper mapper = new ObjectMapper();
			mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
			JsonNode root = mapper.readTree(request.getReader());
			PolicyAdapter policyData = (PolicyAdapter)mapper.readValue(root.get("policyData").get("policy").toString(), PolicyAdapter.class);

			String body = "";

			body = "/* Autogenerated Code Please Don't change/remove this comment section. This is for the UI purpose. \n\t " +
					"<$%BRMSParamTemplate=" + policyData.getRuleName() + "%$> \n */ \n";
			body = body + findRule((String) policyData.getRuleName()) + "\n";
			String generatedRule = "rule \"Params\" \n\tsalience 1000 \n\twhen\n\tthen\n\t\tParams params = new Params();";

			if(policyData.getRuleData().size() > 0){ 
				for(Object keyValue: policyData.getRuleData().keySet()){ 
				    String key = keyValue.toString().substring(0, 1).toUpperCase() + keyValue.toString().substring(1); 
					if (keyValue.equals("String")) { 
						generatedRule = generatedRule + "\n\t\tparams.set" 
								+ key + "(\"" 
								+ policyData.getRuleData().get(keyValue).toString() + "\");"; 
					} else { 
						generatedRule = generatedRule + "\n\t\tparams.set" 
								+ key + "(" 
								+ policyData.getRuleData().get(keyValue).toString() + ");"; 
					} 
				} 
			}
			generatedRule = generatedRule
					+ "\n\t\tinsert(params);\nend";
			logger.info("New rule generated with :" + generatedRule);
			body = body + generatedRule;
			response.setCharacterEncoding("UTF-8");
			response.setContentType("application / json");
			request.setCharacterEncoding("UTF-8");

			PrintWriter out = response.getWriter();
			String responseString = mapper.writeValueAsString(body);
			JSONObject j = new JSONObject("{policyData: " + responseString + "}");
			out.write(j.toString());
			return null;
		} catch (Exception e) {
			logger.error(XACMLErrorConstants.ERROR_PROCESS_FLOW + e);
		}
		return null;	
	}
}