/*
 * ============LICENSE_START==========================================
 * ONAP Portal SDK
 * ===================================================================
 * Copyright © 2017 AT&T Intellectual Property. All rights reserved.
 * ===================================================================
 *
 * Unless otherwise specified, all software contained herein is licensed
 * under the Apache License, Version 2.0 (the "License");
 * you may not use this software 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.
 *
 * Unless otherwise specified, all documentation contained herein is licensed
 * under the Creative Commons License, Attribution 4.0 Intl. (the "License");
 * you may not use this documentation except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *             https://creativecommons.org/licenses/by/4.0/
 *
 * Unless required by applicable law or agreed to in writing, documentation
 * 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============================================
 *
 * ECOMP is a trademark and service mark of AT&T Intellectual Property.
 */
package org.onap.portalsdk.core.util;

import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import javax.servlet.http.HttpSession;

import org.onap.portalsdk.core.command.UserRowBean;
import org.onap.portalsdk.core.domain.User;

public class UsageUtils {
	
	private UsageUtils() {
		// Class has only static methods
	}

	@SuppressWarnings("rawtypes")
	public static List<UserRowBean> getActiveUsers(Map activeUsers) {
		ArrayList<UserRowBean> rows = new ArrayList<>();
		SimpleDateFormat sdf = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");

		for (Iterator i = activeUsers.keySet().iterator(); i.hasNext();) {
			String sessionId = (String) i.next();
			HttpSession session = (HttpSession) activeUsers.get(sessionId);
			User userBean = (User) session.getAttribute("user");
		
			// Not all sessions will be valid logins
			if (null == userBean)
				continue;

			UserRowBean userRow = new UserRowBean();
			userRow.setFirstName(userBean.getFirstName());
			userRow.setLastName(userBean.getLastName());
			userRow.setEmail(userBean.getEmail());
			userRow.setId(userBean.getId());
			userRow.setSessionId(sessionId);
			userRow.setLoginTime(sdf.format(new Date(session.getCreationTime())));
			userRow.setLastLoginTime(sdf.format(userBean.getLastLoginDate()));

			// Calculate the last time and time remaining for these sessions.
			int sessionLength = session.getMaxInactiveInterval();
			long now = new java.util.Date().getTime();
			long lastAccessed = (now - session.getLastAccessedTime()) / 1000;
			long lengthInactive = now - session.getLastAccessedTime();
			long minutesRemaining = sessionLength - (lengthInactive / 1000);

			userRow.setLastAccess((lastAccessed / 60) + ":" + String.format("%02d", lastAccessed % 60));
			userRow.setRemaining((minutesRemaining / 60) + ":" + String.format("%02d", minutesRemaining % 60));

			rows.add(userRow);
		}

		return rows;
	}

	@SuppressWarnings("rawtypes")
	public static List<UserRowBean> getActiveUsersAfterDelete(Map activeUsers, final java.lang.Object data) {
		return getActiveUsers(deleteSession(activeUsers, data));
	}

	@SuppressWarnings("rawtypes")
	private static Map deleteSession(Map activeUsers, Object data) {
		String sessionId = ((UserRowBean) data).getSessionId();
		HttpSession session = (HttpSession) activeUsers.get(sessionId);
		session.invalidate();
		activeUsers.remove(sessionId);
		return activeUsers;
	}
}