/*
 * Copyright 2012 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.File;
import java.net.InetSocketAddress;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.Properties;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.sql.DataSource;
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.webapp.WebAppContext;
import org.traccar.helper.Log;

/**
 * Integrated HTTP server
 */
public class WebServer {

    private Server server;

    private void initDataSource(Properties properties) {
        try {

            Context context = new InitialContext();

            String dataSourceClass = properties.getProperty("database.dataSource");
            if (dataSourceClass != null) {

                Class clazz;
                
                String driverFile = properties.getProperty("database.driverFile");
                if (driverFile != null) {
                    URL url = new URL("jar:file:" + new File(driverFile).getAbsolutePath() + "!/");
                    URLClassLoader cl = new URLClassLoader(new URL[] { url });
                    clazz = Class.forName(dataSourceClass, true, cl);
                } else {
                    clazz = Class.forName(dataSourceClass);
                }
                
                if (clazz != null) {
                    DataSource ds = (DataSource) clazz.newInstance();
                    clazz.getMethod("setURL", String.class).invoke(ds, properties.getProperty("database.url"));
                    clazz.getMethod("setUser", String.class).invoke(ds, properties.getProperty("database.user"));
                    clazz.getMethod("setPassword", String.class).invoke(ds, properties.getProperty("database.password"));

                    context.bind("java:/DefaultDS", ds);
                }
            }

        } catch (Exception error) {
            Log.warning(error);
        }
    }

    public WebServer(Properties properties) {
        String address = properties.getProperty("http.address");
        Integer port = Integer.valueOf(properties.getProperty("http.port", "8082"));
        if (address == null) {
            server = new Server(port);
        } else {
            server = new Server(new InetSocketAddress(address, port));
        }

        initDataSource(properties);

        WebAppContext webapp = new WebAppContext();
        webapp.setContextPath("/");
        webapp.setWar(properties.getProperty("http.application"));
        server.setHandler(webapp);
    }

    public void start() {
        try {
            server.start();
        } catch (Exception error) {
            Log.warning(error);
        }
    }

    public void stop() {
        try {
            server.stop();
        } catch (Exception error) {
            Log.warning(error);
        }
    }

}