/*
 * Created on 8 juil. 2003
 * Copyright (C) 2003, 2004, 2005, 2006 Aelitis, All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * AELITIS, SAS au capital de 46,603.30 euros
 * 8 Allee Lenotre, La Grille Royale, 78600 Le Mesnil le Roi, France.
 *
 */
package org.gudy.azureus2.ui.swt;

import java.io.File;

import com.aelitis.azureus.core.*;

import org.gudy.azureus2.core3.config.COConfigurationManager;
import org.gudy.azureus2.core3.logging.*;
import org.gudy.azureus2.ui.swt.mainwindow.Initializer;

/**
 * @author Olivier
 * 
 */
public class 
Main 
{  
	private static final LogIDs LOGID = LogIDs.GUI;
  public static final String	PR_MULTI_INSTANCE	= "MULTI_INSTANCE";	// values "true" or "false"
	
  StartServer startServer;
  
  public 
  Main(
  	String args[]) 
  {
  	try{
  			// This *has* to be done first as it sets system properties that are read and cached by Java
  		
  		COConfigurationManager.preInitialise();
  		
	  	String	mi_str = System.getProperty( PR_MULTI_INSTANCE );
	  	
	  	boolean mi = mi_str != null && mi_str.equalsIgnoreCase("true");
	  	
	    startServer = new StartServer();

		    
	
	    boolean debugGUI = Boolean.getBoolean("debug");
	    
	    if( mi || debugGUI){
	    	
	    	// create a MainWindow regardless to the server state
	    	
		  AzureusCore		core = AzureusCoreFactory.create();

	      new Initializer(core,startServer,args);
	      
	      return;
	    }
	    
	    boolean	closedown	= false;
	    
	    for (int i=0;i<args.length;i++){
	
	    	String	arg = args[i];
	    	
	    	if ( arg.equalsIgnoreCase( "--closedown" )){
	    		
	    		closedown	= true;
	    		
	    		break;
	    	}
		        // Sometimes Windows use filename in 8.3 form and cannot
		        // match .torrent extension. To solve this, canonical path
		        // is used to get back the long form
		    	
	        String filename = arg;
            
            if( filename.toUpperCase().startsWith( "HTTP:" ) || 
            		filename.toUpperCase().startsWith( "HTTPS:" ) || 
            		filename.toUpperCase().startsWith( "MAGNET:" ) ) {
          		Logger.log(new LogEvent(LOGID, "Main::main: args[" + i
          				+ "] handling as a URI: " + filename));
              continue;  //URIs cannot be checked as a .torrent file
            }            
	        
	        try{
	        	File	file = new File(filename);
	        	
	        	if ( !file.exists()){
	        		
	        		throw( new Exception("File not found" ));
	        	}
	        	
	        	args[i] = file.getCanonicalPath();
	          	
	        	if (Logger.isEnabled())
	        		Logger.log(new LogEvent(LOGID, "Main::main: args[" + i
	        				+ "] exists = " + new File(filename).exists()));
	          
	        }catch( Throwable e ){
	        	Logger.log(new LogAlert(LogAlert.REPEATABLE, LogAlert.AT_ERROR,
							"Failed to access torrent file '" + filename
									+ "'. Ensure sufficient temporary "
									+ "file space available (check browser cache usage)."));
	        }
	    }
	    
	    
	    boolean another_instance = startServer.getState() != StartServer.STATE_LISTENING;
	    
	    if( another_instance ) {  //looks like there's already a process listening on 127.0.0.1:6880
	    	//attempt to pass args to existing instance
	    	StartSocket ss = new StartSocket(args);
	    	
	    	if( !ss.sendArgs() ) {  //arg passing attempt failed, so start core anyway
	    		another_instance = false;
	    		String msg = "There appears to be another program process already listening on socket [127.0.0.1: 6880].\nLoading of torrents via command line parameter will fail until this is fixed.";
	    		System.out.println( msg );
	    		Logger.log(new LogAlert(LogAlert.REPEATABLE, LogAlert.AT_WARNING, msg));
	    	}
	    }
	    
	    if ( !another_instance ){
	
	    	if ( closedown ){
	    			// closedown request and no instance running
	    		return;
	    	}
	    	
	    	AzureusCore		core = AzureusCoreFactory.create();
	    	
	    	startServer.pollForConnections(core);
	
	    	new Initializer(core,startServer,args);
	      
	    }
	    
  	}catch( AzureusCoreException e ){
  		Logger.log(new LogEvent(LOGID, "Start failed", e));
  	}
  }
  
  public static void main(String args[]) 
  { 	
  	//Debug.dumpThreads("Entry threads");
 
  	//Debug.dumpSystemProperties();
  	
    new Main(args);
  }
}
