geoportal-data-viewer-app/src/main/java/org/gcube/portlets/user/geoportaldataviewer/server/util/SessionUtil.java

/**
 *
 */
package org.gcube.portlets.user.geoportaldataviewer.server.util;

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

import org.gcube.common.authorization.library.provider.SecurityTokenProvider;
import org.gcube.common.portal.PortalContext;
import org.gcube.common.scope.api.ScopeProvider;
import org.gcube.portlets.user.urlshortener.UrlShortener;
import org.gcube.vomanagement.usermanagement.GroupManager;
import org.gcube.vomanagement.usermanagement.exception.GroupRetrievalFault;
import org.gcube.vomanagement.usermanagement.exception.UserManagementSystemException;
import org.gcube.vomanagement.usermanagement.impl.LiferayGroupManager;
import org.gcube.vomanagement.usermanagement.model.GCubeGroup;
import org.gcube.vomanagement.usermanagement.model.GCubeUser;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.liferay.portal.service.UserLocalServiceUtil;

/**
 * The Class SessionUtil.
 *
 * @author Francesco Mangiacrapa at ISTI-CNR (francesco.mangiacrapa@isti.cnr.it)
 * 
 *         Oct 20, 2020
 */
public class SessionUtil {

	/** The log. */
	private static Logger LOG = LoggerFactory.getLogger(SessionUtil.class);

	private static final String URL_SHORTENER_SERVICE = "URL_SHORTENER_SERVICE";

	/**
	 * Checks if is into portal.
	 *
	 * @return true, if is into portal
	 */
	public static boolean isIntoPortal() {
		try {
			UserLocalServiceUtil.getService();
			return true;
		} catch (Exception ex) {
			LOG.warn("Development Mode ON");
			return false;
		}
	}

	/**
	 * Checks if is session expired.
	 *
	 * @param httpServletRequest the http servlet request
	 * @return true, if is session expired
	 * @throws Exception the exception
	 */
	public static boolean isSessionExpired(HttpServletRequest httpServletRequest) throws Exception {
		LOG.trace("workspace session validating...");
		return PortalContext.getConfiguration().getCurrentUser(httpServletRequest) == null;
	}

	/**
	 * Retrieve the current user by using the portal manager.
	 *
	 * @param request the request
	 * @return a GcubeUser object
	 */
	public static GCubeUser getCurrentUser(HttpServletRequest request) {

		if (request == null)
			throw new IllegalArgumentException("HttpServletRequest is null!");

		PortalContext pContext = PortalContext.getConfiguration();
		GCubeUser user = pContext.getCurrentUser(request);
		LOG.debug("Returning user " + user);
		return user;
	}

	/**
	 * Retrieve the current scope by using the portal manager.
	 *
	 * @param request     the request
	 * @param setInThread the set in thread
	 * @return a GcubeUser object
	 */
	public static String getCurrentContext(HttpServletRequest request, boolean setInThread) {

		if (request == null)
			throw new IllegalArgumentException("HttpServletRequest is null!");

		PortalContext pContext = PortalContext.getConfiguration();
		String context = pContext.getCurrentScope(request);

		if (context != null && setInThread)
			ScopeProvider.instance.set(context);

		LOG.debug("Returning context " + context);
		return context;
	}

	/**
	 * Retrieve the current scope by using the portal manager.
	 *
	 * @param request     the request
	 * @param setInThread the set in thread
	 * @return a GcubeUser object
	 */
	public static String getCurrentToken(HttpServletRequest request, boolean setInThread) {

		if (request == null)
			throw new IllegalArgumentException("HttpServletRequest is null!");

		PortalContext pContext = PortalContext.getConfiguration();
		String scope = pContext.getCurrentScope(request);
		GCubeUser user = pContext.getCurrentUser(request);
		String token = PortalContext.getConfiguration().getCurrentUserToken(scope, user.getUsername());

		if (token != null && setInThread)
			SecurityTokenProvider.instance.set(token);

		LOG.debug("Returning token " + token.substring(1, 10) + "MASKED_TOKEN");
		return token;
	}

	/**
	 * Retrieve the group given the scope.
	 *
	 * @param scope the scope
	 * @return the group from scope
	 * @throws UserManagementSystemException the user management system exception
	 * @throws GroupRetrievalFault           the group retrieval fault
	 */
	public static GCubeGroup getGroupFromScope(String scope) throws UserManagementSystemException, GroupRetrievalFault {

		if (scope == null || scope.isEmpty())
			throw new IllegalArgumentException("Scope is missing here!!");

		GroupManager gm = new LiferayGroupManager();
		long groupId = gm.getGroupIdFromInfrastructureScope(scope);
		return gm.getGroup(groupId);

	}

	/**
	 * Gets the url shortener.
	 *
	 * @param httpServletRequest the http servlet request
	 * @return the url shortener
	 */
	public static UrlShortener getUrlShortener(HttpServletRequest httpServletRequest) {

		HttpSession session = httpServletRequest.getSession();
		UrlShortener shortener = null;
		try {
			shortener = (UrlShortener) session.getAttribute(URL_SHORTENER_SERVICE);

			if (shortener == null) {
				shortener = new UrlShortener();
				session.setAttribute(URL_SHORTENER_SERVICE, shortener);
			}

		} catch (Exception e) {
			LOG.warn("Error occurred when instancing the " + UrlShortener.class.getSimpleName(), e);
		}

		return shortener;
	}

//	/**
//	 * Gets the preview image for concessione. It is the first image retrieved from
//	 * mongoService for mongoConcessioneId. Caching it into session
//	 *
//	 * @param httpServletRequest the http servlet request
//	 * @param itemType           the item type
//	 * @param mongoConcessioneId the mongo concessione id
//	 * @return the preview image for concessione
//	 */
//	public static UploadedImageDV getPreviewImageForConcessione(HttpServletRequest httpServletRequest, String itemType,
//			String mongoConcessioneId) {
//
//		HttpSession session = httpServletRequest.getSession();
//		Map<String, List<UploadedImageDV>> mapImages = null;
//		List<UploadedImageDV> lUI = null;
//		try {
//			mapImages = (LinkedHashMap) session.getAttribute(CACHE_IMAGE_PREVIEW_FOR_CONCESSIONE);
//
//			if (mapImages == null) {
//				mapImages = new LinkedHashMap<String, List<UploadedImageDV>>();
//			}
//
//			List<UploadedImageDV> imagePreviewForConcessione = mapImages.get(mongoConcessioneId);
//
//			if (imagePreviewForConcessione == null || imagePreviewForConcessione.size() == 0) {
//				LOG.info("Into " + CACHE_IMAGE_PREVIEW_FOR_CONCESSIONE + " object session the mongoConcessioneId "
//						+ mongoConcessioneId + " is empty or null, loading from service and filling it");
//				lUI = new ConcessioneImageUtil().getUploadedImagesForId(httpServletRequest, itemType,
//						mongoConcessioneId, 1);
//				mapImages.put(mongoConcessioneId, lUI);
//			}
//
//			lUI = mapImages.get(mongoConcessioneId);
//			LOG.info("From " + CACHE_IMAGE_PREVIEW_FOR_CONCESSIONE + " object session read image: " + lUI);
//			session.setAttribute(CACHE_IMAGE_PREVIEW_FOR_CONCESSIONE, mapImages);
//
//		} catch (Exception e) {
//			LOG.warn("Error occurred when instancing the " + UrlShortener.class.getSimpleName(), e);
//		}
//
//		if (lUI == null || lUI.isEmpty())
//			return null;
//
//		return lUI.get(0);
//	}
}