/*
 *                 Sun Public License Notice
 * 
 * The contents of this file are subject to the Sun Public License
 * Version 1.0 (the "License"). You may not use this file except in
 * compliance with the License. A copy of the License is available at
 * http://www.sun.com/
 * 
 * The Original Code is NetBeans. The Initial Developer of the Original
 * Code is Sun Microsystems, Inc. Portions Copyright 1997-2000 Sun
 * Microsystems, Inc. All Rights Reserved.
 */

package org.netbeans.modules.web.core;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;
import java.net.Socket;
import java.net.URLConnection;
import java.net.URL;
import java.net.InetAddress;
import java.net.UnknownHostException;

/** Utility class
* @author  Petr Jiricka
* @version 1.00, Jun 03, 1999
*/
public class Util {

    /** Waits for startup of a server, waits until the connection has
     * been established. */ 

    public static boolean waitForURLConnection(URL url, int timeout, int retryTime) { 
        Connect connect = new Connect(url, retryTime); 
        Thread t = new Thread(connect);
        t.start();
        try {
            t.join(timeout);
        } catch(InterruptedException ie) {
        }
        if (t.isAlive()) {
            connect.finishLoop();
            t.interrupt();//for thread deadlock
        }
        return connect.getStatus();
    }

    public static String issueGetRequest(URL url) {
        BufferedReader in = null;
        StringBuffer input = new StringBuffer();
        try {
            in = new BufferedReader(new InputStreamReader(
                                        url.openStream()));
            String inputLine;
            while ((inputLine = in.readLine()) != null) {
                input.append(inputLine);
                input.append("\n"); // NOI18N
            }  
            return input.toString();
        }
        catch (Exception e) {
	    //e.printStackTrace();
            return null;
        }
        finally {
            if (in != null)
                try {
                    in.close();
                }
                catch(IOException e) {
                    //e.printStackTrace();
                }
        }
    }

    /** Returns string for localhost */
/*    public static String getLocalHost() {
        try {
            return InetAddress.getLocalHost().getHostName();
        }
        catch (UnknownHostException e) {
            return "127.0.0.1"; // NOI18N
        }
    }
*/
    private static class Connect implements Runnable  {

        URL url = null;
        int retryTime;
        boolean status = false;
        boolean loop = true;

        public Connect(URL url, int retryTime) {
            this.url = url;
            this.retryTime = retryTime; 
        } 

        public void finishLoop() {
            loop = false;
        }

        public void run() {
            try {
                InetAddress.getByName(url.getHost());
            } catch (UnknownHostException e) {
                return;
            }
            while (loop) {
                try {
                    Socket socket = new Socket(url.getHost(), url.getPort());
                    socket.close();
                    status = true;
                    break;
                } catch (UnknownHostException e) {//nothing to do
                } catch (IOException e) {//nothing to do
                }
                try {
                    Thread.currentThread().sleep(retryTime);
                } catch(InterruptedException ie) {
                }
            }
        }

        boolean getStatus() {
            return status;
        }
    }
}