package org.gcube.portal.usersaccount;

import static org.gcube.common.authorization.client.Constants.authorizationService;

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

import org.gcube.common.authorization.library.provider.SecurityTokenProvider;
import org.gcube.common.portal.PortalContext;
import org.gcube.common.storagehub.client.dsl.StorageHubClient;
import org.gcube.portal.notifications.thread.NewUserAccountNotificationThread;
import org.gcube.portal.removeaccount.thread.RemoveUserTokenFromInfraThread;
import org.gcube.portal.removeaccount.thread.RemovedUserAccountThread;
import org.gcube.portal.removeaccount.thread.RemovedUserFromLDAPThread;
import org.gcube.vomanagement.usermanagement.GroupManager;
import org.gcube.vomanagement.usermanagement.RoleManager;
import org.gcube.vomanagement.usermanagement.UserManager;
import org.gcube.vomanagement.usermanagement.impl.LiferayGroupManager;
import org.gcube.vomanagement.usermanagement.impl.LiferayRoleManager;
import org.gcube.vomanagement.usermanagement.impl.LiferayUserManager;
import org.gcube.vomanagement.usermanagement.model.GCubeRole;
import org.gcube.vomanagement.usermanagement.model.GCubeUser;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.liferay.portal.ModelListenerException;
import com.liferay.portal.model.BaseModelListener;
import com.liferay.portal.model.User;
/**
 * 
 * @author Massimiliano Assante, CNR-ISTI
 *
 * Model Listeners are used to listen for events on models and do something in response. 
 * They’re similar in concept to custom action hooks, which perform actions in response to portal events (user login, for example). 
 * Model listeners implement the ModelListener interface.
 * 
 * @see https://dev.liferay.com/develop/tutorials/-/knowledge_base/6-2/creating-model-listeners
 */
public class MyCreateUserAccountListener extends BaseModelListener<User> {
	private static final Logger _log = LoggerFactory.getLogger(MyCreateUserAccountListener.class);
	final String SUBJECT = "New user account notification";
	private GroupManager gm;
	private UserManager uMan;
	private RoleManager rm;

	@Override
	public void onAfterCreate(User user) throws ModelListenerException {
		_log.info("onAfterCreate NewUserAccount listener for: " + user.getScreenName() + " / " + user.getFullName());
		Thread emailManagersThread = new Thread(new NewUserAccountNotificationThread(user.getScreenName(), user.getFullName(), user.getEmailAddress()));
		emailManagersThread.start();

		Thread WorkspaceAccountCreationThread = new Thread(new WorkspaceCreateAccountThread(user.getScreenName(), user.getFullName(), user.getEmailAddress()));
		WorkspaceAccountCreationThread.start();
	}

	@Override
	public void onBeforeRemove(User user) throws ModelListenerException {
		gm = new LiferayGroupManager();
		uMan = new LiferayUserManager();
		rm = new LiferayRoleManager();

		_log.info("onBeforeRemove userAccount listener for: " + user.getScreenName() + " / " + user.getFullName());
		String username2Delete = user.getScreenName();
		_log.info("Trying to remove user from JCR and not notify infra-managers ...");
		try {			
			_log.debug("Getting super user with role {}", Constants.AUTORISED_INFRA_ROLE);
			//get the super user
			String infraContext = "/"+PortalContext.getConfiguration().getInfrastructureName();
			long groupId = gm.getGroupIdFromInfrastructureScope(infraContext);		
			long roleId = rm.getRoleId(Constants.AUTORISED_INFRA_ROLE, groupId);
			List<GCubeUser> users = uMan.listUsersByGroupAndRole(groupId, roleId);
			if (users.isEmpty()) {
				_log.error("Cannot delete the user: there is no user having role " + Constants.AUTORISED_INFRA_ROLE + " on context: " + infraContext);
				return;
			}
			else {
				GCubeUser theAdmin = users.get(0);
				String adminUsername =  theAdmin.getUsername();
				String theAdminToken = PortalContext.getConfiguration().getCurrentUserToken(infraContext, adminUsername);
				List<GCubeRole> theAdminRoles = rm.listRolesByUserAndGroup(theAdmin.getUserId(), groupId);			
				List<String> rolesString = new ArrayList<String>();
				for (GCubeRole gCubeRole : theAdminRoles) {
					rolesString.add(gCubeRole.getRoleName());
				}
				Thread dropUserWorkspaceThread = new Thread(new RemovedUserAccountThread(username2Delete, theAdminToken, rolesString));
				dropUserWorkspaceThread.start();
			}
	
			_log.info("Trying to remove user from LDAP ...");
			Thread removeFromLDAPThread = new Thread(new RemovedUserFromLDAPThread(username2Delete));
			removeFromLDAPThread.start();

			_log.info("Trying to remove user from Auth ...");
			Thread deleteAllUserAuthThread = new Thread(new RemoveUserTokenFromInfraThread(username2Delete));
			deleteAllUserAuthThread.start();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	//	@Override
	//    public void onAfterRemove(User user)





}