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/*-
 * ============LICENSE_START=======================================================
 * PolicyEngineClient
 * ================================================================================
 * 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.onap.policyengine;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.StringReader;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.UUID;

import javax.json.Json;
import javax.json.JsonObject;
import javax.json.JsonReader;

import org.onap.policy.api.PolicyChangeResponse;
import org.onap.policy.api.PolicyConfigType;
import org.onap.policy.api.PolicyEngine;
import org.onap.policy.api.PolicyParameters;
import org.onap.policy.api.PolicyType;

public class ClosedLoopPolicyClient {
	//For updating a ClosedLoop_Fault policy set the "isEdit" flag to true.   
	//For creating a ClosedLoop_Fault policy set the "isEdit" flag to false.  
	static Boolean isEdit = false;
	     
	//Builds JSONObject from File  
	private static JsonObject buildJSON(File jsonInput, String jsonString) throws FileNotFoundException {
	    JsonObject json = null;;
	    JsonReader jsonReader = null;    
	    if (jsonString != null && jsonInput == null) {
	        StringReader in = null;
	            in = new StringReader(jsonString);
	            jsonReader = Json.createReader(in);
	            json = jsonReader.readObject();
	            in.close();
	    }else {
	        InputStream in = null;
	        in = new FileInputStream(jsonInput);
	        jsonReader = Json.createReader(in);
	        json = jsonReader.readObject();
	        try {
				in.close();
			} catch (IOException e) {
				System.err.println("Exception Occured while closing input stream"+e);
			}
	    }
	    jsonReader.close();
	           
	    return json;
	}
	public static void main(String[] args) {
			try {
				PolicyEngine policyEngine = new PolicyEngine("config.properties");
				PolicyParameters policyParameters = new PolicyParameters();
				// Set Policy Type 
				policyParameters.setPolicyConfigType(PolicyConfigType.ClosedLoop_Fault);
				policyParameters.setPolicyName("MikeAPItests.ClosedLoopFaultApiTest45");
				policyParameters.setPolicyDescription("This is a sample ClosedLoop_Fault policy CREATE example");
				//policyParameters.setPolicyScope("MikeAPItests");
				
				// Set up Micro Services Attributes 
				File jsonFile = null;
				String MSjsonString= null;
				Path file = Paths.get("C:\\policyAPI\\ClosedLoopJSON\\faultTestJson.json");
				jsonFile = file.toFile();
				
				policyParameters.setConfigBody(buildJSON(jsonFile, MSjsonString).toString());		
				policyParameters.setConfigBodyType(PolicyType.JSON);

				policyParameters.setRequestID(UUID.randomUUID());
	            // Set Safe Policy value for Risk Type
				SimpleDateFormat dateformat3 = new SimpleDateFormat("dd/MM/yyyy");
				Date date = dateformat3.parse("15/10/2016");
				policyParameters.setTtlDate(date);
				// Set Safe Policy value for Guard
				policyParameters.setGuard(true);
				// Set Safe Policy value for Risk Level
				policyParameters.setRiskLevel("5");
				// Set Safe Policy value for Risk Type
				policyParameters.setRiskType("PROD");
				
				// API method to create or update Policy. 
	 	        PolicyChangeResponse response = null;
		        if (!isEdit) {
		            response = policyEngine.createPolicy(policyParameters);
		        } 
		        else {	
		        	response = policyEngine.updatePolicy(policyParameters);
		        }
		        
				if(response.getResponseCode()==200){
					System.out.println(response.getResponseMessage());
					System.out.println("Policy Created Successfully!");
				}else{
					System.out.println("Error! " + response.getResponseMessage());
				}
			} catch (Exception e) {
				System.err.println(e.getMessage());
			}
		}
}