/*
 * Copyright 2011 gitblit.com.
 *
 * 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 com.gitblit.wicket.pages;

import org.apache.wicket.protocol.http.WebRequest;
import org.apache.wicket.protocol.http.WebResponse;

import com.gitblit.models.UserModel;
import com.gitblit.wicket.GitBlitWebSession;

public class LogoutPage extends BasePage {

	public LogoutPage() {
		super();
		GitBlitWebSession session = GitBlitWebSession.get();
		UserModel user = session.getUser();
		app().authentication().logout(((WebRequest) getRequest()).getHttpServletRequest(),
				((WebResponse) getResponse()).getHttpServletResponse(), user);
		session.invalidate();

		/*
		 * Now check whether the authentication was realized via the Authorization in the header.
		 * If so, it is likely to be cached by the browser, and cannot be undone. Effectively, this means
		 * that you cannot log out...
		 */
		if ( ((WebRequest)getRequest()).getHttpServletRequest().getHeader("Authorization") != null ) {
			// authentication will be done via this route anyway, show a page to close the browser:
			// this will be done by Wicket.
			setupPage(null, getString("gb.logout"));

		} else {
			setRedirect(true);
			setResponsePage(getApplication().getHomePage());
		} // not via WWW-Auth
	} // LogoutPage
}