/*******************************************************************************
 *  ============LICENSE_START=======================================================
 *  son-handler
 *  ================================================================================
 *   Copyright (C) 2019-2021 Wipro Limited.
 *   ==============================================================================
 *     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.dcaegen2.services.sonhms;

import com.fasterxml.jackson.databind.ObjectMapper;

import fj.data.Either;

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

import org.json.JSONObject;
import org.onap.dcaegen2.services.sonhms.dao.FaultNotificationsRepository;
import org.onap.dcaegen2.services.sonhms.utils.BeanUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class FaultNotificationComponent {

	private static Logger log = LoggerFactory.getLogger(FaultNotificationComponent.class);

	/**
	 * Get fault notifications.
	 */
	public Either<List<FaultEvent>, Integer> getFaultNotifications() {
		FaultNotificationsRepository faultNotificationsRepository = BeanUtil
				.getBean(FaultNotificationsRepository.class);
		String notificationString = faultNotificationsRepository.getFaultNotificationFromQueue();
		log.info("get fault notifications method");
		log.info("Notification String    " + notificationString);
		if (notificationString == null) {
			return Either.right(404);
		}
		try {
			JSONObject obj = new JSONObject(notificationString);
                        Configuration configuration = Configuration.getInstance();
			String configNfNamingCode = configuration.getNfNamingCode();
			String nfNamingCode = obj.getJSONObject("event").getJSONObject("commonEventHeader")
					.getString("nfNamingCode");
			if (!nfNamingCode.equalsIgnoreCase(configNfNamingCode)) {
				return Either.right(404);
			}
			ObjectMapper mapper = new ObjectMapper();
			FaultEvent faultEvent = new FaultEvent();
			List<FaultEvent> faultEvents = new ArrayList<>();
			faultEvent = mapper.readValue(notificationString, FaultEvent.class);
			log.info("Parsing FM notification");
			faultEvents.add(faultEvent);
			return Either.left(faultEvents);
		} catch (Exception e) {
			log.error("Exception in parsing Notification {}", e);
			return Either.right(400);
		}
	}

}