/*
 * 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 org.traccar.database.DataManager;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.SQLException;

public class MainServlet extends HttpServlet {

    private static final String USER_ID = "userId";

    private DataManager dataManager;

    public MainServlet(DataManager dataManager) {
        this.dataManager = dataManager;
    }

    @Override
    protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

        String command = req.getPathInfo();

        if (command.equals("/login")) {
            login(req, resp);
        } else if (command.equals("/logout")) {
            logout(req, resp);
        } else {
            resp.sendError(HttpServletResponse.SC_BAD_REQUEST);
        }
    }

    private void login(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        try {
            req.getSession().setAttribute(USER_ID,
                    dataManager.login(req.getParameter("name"), req.getParameter("password")));
            resp.getWriter().println("{ success: true }");
        } catch (SQLException e) {
            throw new ServletException(e);
        }
    }

    private void logout(HttpServletRequest req, HttpServletResponse resp) throws IOException {
        req.getSession().removeAttribute(USER_ID);
        resp.getWriter().println("{ success: true }");
    }

}