geoportal-data-entry-app/src/main/java/org/gcube/portlets/user/geoportaldataentry/server/SessionUtil.java

/**
 *
 */
package org.gcube.portlets.user.geoportaldataentry.server;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

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

import org.gcube.application.geoportal.common.model.legacy.Concessione;
import org.gcube.application.geoportal.common.rest.MongoConcessioni;
import org.gcube.common.authorization.library.provider.SecurityTokenProvider;
import org.gcube.common.portal.PortalContext;
import org.gcube.common.scope.api.ScopeProvider;
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 {

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

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

	/**
	 * 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 setContextsInThread set the scope and the security token into current thread 
	 * @return a GcubeUser object
	 */
	public static String getCurrentContext(HttpServletRequest request, boolean setContextsInThread){

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

		PortalContext pContext = PortalContext.getConfiguration();
		String context = pContext.getCurrentScope(request);
		
		if(setContextsInThread) {
			GCubeUser user = getCurrentUser(request);
			String token = pContext.getCurrentUserToken(context, user.getUsername());
			
			if(context!=null)
				ScopeProvider.instance.set(context);
			
			if(token!=null)
				SecurityTokenProvider.instance.set(token);
		}

		return context;
	}

	/**
	 * 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 list of concessioni.
	 *
	 * @param httpServletRequest the http servlet request
	 * @return the list of concessioni
	 * @throws Exception the exception
	 */
	public static List<Concessione> getListOfConcessioni(HttpServletRequest httpServletRequest) throws Exception {
		HttpSession session = httpServletRequest.getSession();
		List<Concessione> listOfConcessioni = (List<Concessione>) session.getAttribute(LIST_OF_CONCESSIONI);
		if (listOfConcessioni == null) {
			listOfConcessioni = new ArrayList<Concessione>();
			LOG.info("Loading list of concessione from client mongo");
			SessionUtil.getCurrentContext(httpServletRequest, true);
			ServiceUtil serviceUtil = new ServiceUtil();
			MongoConcessioni clientMongo = serviceUtil.getInstanceMongoConcessioni();
			Iterator<Concessione> concessioni = clientMongo.getList();
			if (concessioni != null) {
				while (concessioni.hasNext()) {
					Concessione concessione = (Concessione) concessioni.next();
					listOfConcessioni.add(concessione);
					
				}
			}
			LOG.debug("Got list of concessioni from client mongo: "+listOfConcessioni);
			session.setAttribute(LIST_OF_CONCESSIONI, listOfConcessioni);
			LOG.info("Saved in session list of concessioni from client mongo with size: "+listOfConcessioni.size());
		}else
			LOG.info("list of concessioni presents in session");
		
		LOG.info("read list of concessioni with size: "+listOfConcessioni.size());
		return listOfConcessioni;
	}
}