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/*
 * Copyright 2015 Anton Tananaev (anton.tananaev@gmail.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 org.traccar.http;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.traccar.Context;
import org.traccar.model.User;

public class MainServlet extends BaseServlet {

    @Override
    protected boolean handle(String command, HttpServletRequest req, HttpServletResponse resp) throws Exception {
        if (command.equals("/session")) {
            session(req, resp);
        } else if (command.equals("/login")) {
            login(req, resp);
        } else if (command.equals("/logout")) {
            logout(req, resp);
        } else if (command.equals("/register")) {
            register(req, resp);
        } else {
            return false;
        }
        return true;
    }

    private void session(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        resp.getWriter().println("{ success: true, session: " + (req.getSession().getAttribute(USER_ID) != null) + " }");
    }

    private void login(HttpServletRequest req, HttpServletResponse resp) throws Exception {
        req.getSession().setAttribute(USER_ID, Context.getDataManager().login(
                req.getParameter("email"), req.getParameter("password")));
        sendResponse(resp.getWriter());
    }

    private void logout(HttpServletRequest req, HttpServletResponse resp) throws Exception {
        req.getSession().removeAttribute(USER_ID);
        sendResponse(resp.getWriter());
    }

    private void register(HttpServletRequest req, HttpServletResponse resp) throws Exception {
        User user = JsonConverter.objectFromJson(req.getReader(), new User());
        Context.getDataManager().addUser(user);
        sendResponse(resp.getWriter());
    }

}