/*
 * #%L
 * Eureka WebApp
 * %%
 * Copyright (C) 2012 - 2013 Emory University
 * %%
 * This program is dual licensed under the Apache 2 and GPLv3 licenses.
 * 
 * Apache License, Version 2.0:
 * 
 * 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.
 * 
 * GNU General Public License version 3:
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public
 * License along with this program.  If not, see
 * <http://www.gnu.org/licenses/gpl-3.0.html>.
 * #L%
 */
package edu.emory.cci.aiw.cvrg.eureka.servlet;

import java.io.IOException;
import java.util.Date;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.google.inject.Inject;
import com.sun.jersey.api.client.ClientResponse.Status;

import org.eurekaclinical.eureka.client.comm.User;
import org.eurekaclinical.common.comm.clients.ClientException;
import edu.emory.cci.aiw.cvrg.eureka.common.comm.clients.ServicesClient;
import javax.servlet.http.HttpSession;

public class LoginServlet extends HttpServlet {

	private final ServicesClient servicesClient;

	@Inject
	public LoginServlet(ServicesClient inClient) {
		this.servicesClient = inClient;
	}

	@Override
	protected void doGet(HttpServletRequest req, HttpServletResponse resp)
			throws ServletException, IOException {
		try {
			User user = (User) req.getAttribute("user");
			user.setLastLogin(new Date());
			this.servicesClient.updateUser(user,user.getId());
			resp.sendRedirect(req.getContextPath() + "/#/index");
		} catch (ClientException e) {
			Status responseStatus = e.getResponseStatus();
			if (responseStatus == Status.FORBIDDEN) {
				HttpSession session = req.getSession(false);
				if (session != null) {
					session.invalidate();
				}
				resp.sendError(HttpServletResponse.SC_FORBIDDEN);
			} else {
				throw new ServletException(e);
			}
		}
	}
}
