/*
 * Copyright (C) 2007-2012 Argeo GmbH
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file 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.
 */
package org.argeo.security.ui.rap;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.eclipse.rap.rwt.RWT;
import org.eclipse.rap.rwt.application.IEntryPoint;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.PlatformUI;

/**
 * RAP entry point which authenticates the subject as anonymous, for public
 * unauthenticated access.
 */
public class AnonymousEntryPoint implements IEntryPoint {
	private final static Log log = LogFactory.getLog(AnonymousEntryPoint.class);

	/**
	 * How many seconds to wait before invalidating the session if the user has
	 * not yet logged in.
	 */
	private Integer loginTimeout = 1 * 60;
	private Integer sessionTimeout = 15 * 60;

	@Override
	public int createUI() {
		// Short login timeout so that the modal dialog login doesn't hang
		// around too long
		RWT.getRequest().getSession().setMaxInactiveInterval(loginTimeout);

		if (log.isDebugEnabled())
			log.debug("Anonymous THREAD=" + Thread.currentThread().getId()
					+ ", sessionStore=" + RWT.getSessionStore().getId());

		// create display
		final Display display = PlatformUI.createDisplay();

		// log in
//		final ILoginContext loginContext = SecureRapActivator
//				.createLoginContext(SecureRapActivator.CONTEXT_SPRING_ANONYMOUS);
//		Subject subject = null;
//		try {
//			loginContext.login();
//			subject = loginContext.getSubject();
//		} catch (LoginException e) {
//			throw new ArgeoException(
//					"Unexpected exception during authentication", e);
//		}
//
//		// identify after successful login
//		if (log.isDebugEnabled())
//			log.debug("Authenticated " + subject);
//		final String username = subject.getPrincipals().iterator().next()
//				.getName();
//
//		// Once the user is logged in, she can have a longer session timeout
//		RWT.getRequest().getSession().setMaxInactiveInterval(sessionTimeout);
//
//		// Logout callback when the display is disposed
//		display.disposeExec(new Runnable() {
//			public void run() {
//				log.debug("Display disposed");
//				logout(loginContext, username);
//			}
//		});
//
//		//
//		// RUN THE WORKBENCH
//		//
//		Integer returnCode = null;
//		try {
//			returnCode = Subject.doAs(subject, new PrivilegedAction<Integer>() {
//				public Integer run() {
//					RapWorkbenchAdvisor workbenchAdvisor = new RapWorkbenchAdvisor(
//							null);
//					int result = PlatformUI.createAndRunWorkbench(display,
//							workbenchAdvisor);
//					return new Integer(result);
//				}
//			});
//			logout(loginContext, username);
//		} finally {
//			display.dispose();
//		}
		return 1;
	}

//	private void logout(ILoginContext secureContext, String username) {
//		try {
//			secureContext.logout();
//			log.info("Logged out " + (username != null ? username : "")
//					+ " (THREAD=" + Thread.currentThread().getId() + ")");
//		} catch (LoginException e) {
//			log.error("Erorr when logging out", e);
//		}
//	}
}