/*-
 * ============LICENSE_START==========================================
 * ONAP Portal
 * ===================================================================
 * Copyright (C) 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.portalapp.util;

import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.onap.portalapp.portal.utils.EPCommonSystemProperties;
import org.onap.portalsdk.core.logging.logic.EELFLoggerDelegate;
import org.onap.portalsdk.core.onboarding.listener.PortalTimeoutHandler;
import org.onap.portalsdk.core.onboarding.util.CipherUtil;
import org.onap.portalsdk.core.onboarding.util.PortalApiConstants;
import org.onap.portalsdk.core.util.SystemProperties;
import org.onap.portalsdk.core.web.support.AppUtils;

public class SessionCookieUtil {
	
	//private static final String JSESSIONID = "JSESSIONID";
	private static final String EP_SERVICE = "EPService";
	private static final String USER_ID = "UserId";
	private static Integer cookieMaxAge = -1;
	private static EELFLoggerDelegate logger = EELFLoggerDelegate.getLogger(SessionCookieUtil.class);
	
	public static void preSetUp(HttpServletRequest request,
			HttpServletResponse response) {
		initateSessionMgtHandler(request);
		//set up EPService cookie
		setUpEPServiceCookie(request, response);
	}

	public static void setUpEPServiceCookie(HttpServletRequest request,
			HttpServletResponse response) {
		String jSessionId = getJessionId(request);
		Cookie cookie1 = new Cookie(EP_SERVICE, jSessionId);
		cookie1.setMaxAge(cookieMaxAge);
		cookie1.setDomain(EPCommonSystemProperties.getProperty(EPCommonSystemProperties.COOKIE_DOMAIN));
		cookie1.setPath("/");
		response.addCookie(cookie1);
	}
	
	public static void setUpUserIdCookie(HttpServletRequest request,
			HttpServletResponse response,String userId) throws Exception {
		logger.info("************** session cookie util set up UserId cookie begins");
		userId = CipherUtil.encryptPKC(userId,
				SystemProperties.getProperty(SystemProperties.Decryption_Key));
		Cookie cookie1 = new Cookie(USER_ID, userId);
		cookie1.setMaxAge(cookieMaxAge);
		cookie1.setDomain(EPCommonSystemProperties.getProperty(EPCommonSystemProperties.COOKIE_DOMAIN));
		cookie1.setPath("/");
		response.addCookie(cookie1);
		logger.info("************** session cookie util set up EP cookie completed");
	}
	
	public static String getUserIdFromCookie(HttpServletRequest request,
			HttpServletResponse response) throws Exception {
		String userId = "";
		Cookie[] cookies = request.getCookies();
		Cookie userIdcookie = null;
		if (cookies != null)
			for (Cookie cookie : cookies)
				if (cookie.getName().equals(USER_ID))
					userIdcookie = cookie;
		if(userIdcookie!=null){
			userId = CipherUtil.decryptPKC(userIdcookie.getValue(),
					SystemProperties.getProperty(SystemProperties.Decryption_Key));
		}
		
		logger.info("************** session cookie util set up EP cookie completed");
		return userId;
	}
	
	public static String getJessionId(HttpServletRequest request){
		
		return request.getSession().getId();
		/*
		Cookie ep = WebUtils.getCookie(request, JSESSIONID);
		if(ep==null){
			return request.getSession().getId();
		}
		return ep.getValue();
		*/
	}
	
	protected static void initateSessionMgtHandler(HttpServletRequest request) {
		String jSessionId = getJessionId(request);
		storeMaxInactiveTime(request);
		PortalTimeoutHandler.sessionCreated(jSessionId, jSessionId, AppUtils.getSession(request));
	}
	
	protected static void storeMaxInactiveTime(HttpServletRequest request) {
		HttpSession session = AppUtils.getSession(request);
		if(session.getAttribute(PortalApiConstants.GLOBAL_SESSION_MAX_IDLE_TIME) == null)
			session.setAttribute(PortalApiConstants.GLOBAL_SESSION_MAX_IDLE_TIME,session.getMaxInactiveInterval());
	}
	
	public static void resetSessionMaxIdleTimeOut(HttpServletRequest request) {
		try {
			HttpSession session = AppUtils.getSession(request);
			final Object maxIdleAttribute = session.getAttribute(PortalApiConstants.GLOBAL_SESSION_MAX_IDLE_TIME);
			if(session != null && maxIdleAttribute != null) {
				session.setMaxInactiveInterval(Integer.parseInt(maxIdleAttribute.toString()));
			}
		} catch (Exception e) {
			logger.error(EELFLoggerDelegate.errorLogger, "resetSessionMaxIdleTimeOut failed", e);
		}
		
	}

}