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/**
 * Copyright (C) 2014 Dasasian ([email protected])
 *
 * 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.dasasian.chok.util;

import org.mortbay.jetty.Connector;
import org.mortbay.jetty.Server;
import org.mortbay.jetty.nio.SelectChannelConnector;
import org.mortbay.jetty.webapp.WebAppContext;

import java.io.File;

public class WebApp {

    private final String _warPath;
    private int _port;

    public WebApp(String[] paths, int port) {
        _warPath = findWarInPathOrChilds(paths);
        _port = port;
    }

    public static void main(String[] args) throws Exception {
        WebApp webApp = new WebApp(new String[]{args[0]}, Integer.parseInt(args[1]));
        webApp.startWebServer();
    }

    private String findWarInPathOrChilds(String[] warPaths) {
        for (String path : warPaths) {
            File file = new File(path);
            if (isWarFile(file)) {
                return file.getAbsolutePath();
            }
            File[] listFiles = file.listFiles();
            if (listFiles != null) {
                for (File subFiles : listFiles) {
                    if (isWarFile(subFiles)) {
                        return subFiles.getAbsolutePath();
                    }
                }
            }
        }
        throw new IllegalArgumentException("Unable to find war");
    }

    private boolean isWarFile(File file) {
        return file.exists() && file.getName().endsWith(".war");
    }

    public void startWebServer() throws Exception {
        Server server = new Server();
        Connector connector = new SelectChannelConnector();
        connector.setPort(_port);
        server.setConnectors(new Connector[]{connector});

        WebAppContext webapp = new WebAppContext();
        webapp.setContextPath("/");
        webapp.setWar(_warPath);
        server.setHandler(webapp);

        server.start();
        server.join();
    }

}