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/*-
 * ============LICENSE_START=======================================================
 * PolicyEngineAPI
 * ================================================================================
 * 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.policy.std;

import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;

import org.onap.policy.api.LoadedPolicy;
import org.onap.policy.api.RemovedPolicy;
import org.onap.policy.api.UpdateType;

import com.fasterxml.jackson.databind.ObjectMapper;

public class NotificationUnMarshal {
	
	private NotificationUnMarshal() {
		// Empty constructor
	}
	
	public static StdPDPNotification notificationJSON(String json) throws IOException{
		ObjectMapper mapper = new ObjectMapper();
		StdPDPNotification notification = mapper.readValue(json, StdPDPNotification.class);
		if(notification == null || notification.getLoadedPolicies() == null){
			return notification;
		}
	    Collection<StdLoadedPolicy> stdLoadedPolicies = new ArrayList<>();
	    for(LoadedPolicy loadedPolicy: notification.getLoadedPolicies()){
	        StdLoadedPolicy stdLoadedPolicy = (StdLoadedPolicy) loadedPolicy;
	        if(notification.getRemovedPolicies()!=null){
	            Boolean updated = false;
	            for(RemovedPolicy removedPolicy: notification.getRemovedPolicies()){
	                String regex = ".(\\d)*.xml";
	                if(removedPolicy.getPolicyName().replaceAll(regex, "").equals(stdLoadedPolicy.getPolicyName().replaceAll(regex, ""))){
	                    updated  = true;
	                    break;
	                }
	            }
	            if(updated){
	                stdLoadedPolicy.setUpdateType(UpdateType.UPDATE);
	            }else{
	                stdLoadedPolicy.setUpdateType(UpdateType.NEW);
	            }
	        }else{
	            stdLoadedPolicy.setUpdateType(UpdateType.NEW);
	        }
	        stdLoadedPolicies.add(stdLoadedPolicy);
	    }
	    notification.setLoadedPolicies(stdLoadedPolicies);
		return notification;
	}
}