/*-
 * ================================================================================
 * eCOMP Portal SDK
 * ================================================================================
 * Copyright (C) 2017 AT&T Intellectual Property
 * ================================================================================
 * 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.
 * ================================================================================
 */
package org.openecomp.portalsdk.core.onboarding.ueb;

import java.io.IOException;
import java.security.GeneralSecurityException;
import java.util.LinkedList;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import com.att.nsa.apiClient.http.HttpException;
import com.att.nsa.cambria.client.CambriaClient.CambriaApiException;
import com.att.nsa.cambria.client.CambriaClientBuilders;
import com.att.nsa.cambria.client.CambriaClientFactory;
import com.att.nsa.cambria.client.CambriaTopicManager;

/**
 * Provides methods to facilitate creating topics, and adding publishers and
 * subscribers to existing topics.
 * 
 */
public class TopicManager {

	private final Log logger = LogFactory.getLog(getClass());

	/**
	 * Creates a topic with the specified information.
	 * 
	 * @param key
	 *            Topic key
	 * @param secret
	 *            Topic secret key
	 * @param topicName
	 *            Topic name
	 * @param topicDescription
	 *            Topic description
	 * @throws HttpException
	 * @throws CambriaApiException
	 * @throws IOException
	 */
	public void createTopic(String key, String secret, String topicName, String topicDescription)
			throws HttpException, CambriaApiException, IOException {
		final LinkedList<String> urlList = Helper.uebUrlList();
		if (logger.isInfoEnabled()) {
			logger.info("==> createTopic");
			logger.info("topicName: " + topicName);
			logger.info("topicDescription: " + topicDescription);
		}
		final CambriaTopicManager tm = null; //to do for open source
		//CambriaClientFactory.createTopicManager(urlList, key, secret);
		tm.createTopic(topicName, topicDescription, 1, 1);
	}

	/**
	 * Modifies the specified topic to accept a subscriber using the specified
	 * key.
	 * 
	 * @param topicOwnerKey
	 * @param topicOwnerSecret
	 * @param subscriberKey
	 * @param topicName
	 * @throws HttpException
	 * @throws CambriaApiException
	 * @throws IOException
	 */
	public void addSubscriber(String topicOwnerKey, String topicOwnerSecret, String subscriberKey, String topicName)
			throws HttpException, CambriaApiException, IOException {
		logger.info("==> addSubscriber to topic " + topicName);
		final LinkedList<String> urlList = Helper.uebUrlList();
		CambriaTopicManager tm = null;
		try {
			tm = new CambriaClientBuilders.TopicManagerBuilder().usingHosts(urlList).authenticatedBy(topicOwnerKey, topicOwnerSecret).build();
		} catch (GeneralSecurityException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		//old version num : CambriaClientFactory.createTopicManager(urlList, topicOwnerKey,topicOwnerSecret);
		tm.allowConsumer(topicName, subscriberKey);
	}

	/**
	 * Modifies the specified topic to accept a publisher using the specified
	 * key.
	 * 
	 * @param topicOwnerKey
	 * @param topicOwnerSecret
	 * @param publisherKey
	 * @param topicName
	 * @throws HttpException
	 * @throws CambriaApiException
	 * @throws IOException
	 */

	public void addPublisher(String topicOwnerKey, String topicOwnerSecret, String publisherKey, String topicName)
			throws HttpException, CambriaApiException, IOException {
		logger.info("==> addPublisher to topic " + topicName);
		final LinkedList<String> urlList = Helper.uebUrlList();
		final CambriaTopicManager tm = null;
				//CambriaClientFactory.createTopicManager(urlList, topicOwnerKey,
				//topicOwnerSecret);
		tm.allowProducer(topicName, publisherKey);
	}
}