/*=========================================================================

  Program:   FusionViewer
  Module:    $RCSfile: Env.java,v $
  Language:  Java
  Date:      $Date: 2006/10/13 18:35:13 $
  Version:   $Revision: 1.2 $
  
  Copyright (c) Insightful Corporation.  All rights reserved.
  See Copyright.txt for details.
  
  This software is distributed WITHOUT ANY WARRANTY; without even
  the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
  PURPOSE.  See the above copyright notice for more information.

=========================================================================*/

package org.fusionviewer.io;

import java.io.File;

import org.fusionviewer.ui.PlatformUtility;

/**\class Env
 *\brief Static class containing platform-dependent file and directory names and locations.
 */
public class Env {
	/**
     * Home directory
     */
    public final static File PREFERENCES_DIRECTORY;
    
    /**
     * Application configuration file
     */
    public final static String CONFIG = "fusionviewer.config";
    
    /**
     * Application data directory
     */
    public final static File DATA;
    
    /**
     * True if we are running on a Macintosh.
     */
    public final static boolean isMac;
    
    /**
     * True if we are running on Windows.
     */
    public final static boolean isWindows;
    
	static {
		final String APPLICATION_NAME = "FusionViewer";
		final String VIEWER_HOME_DIRECTORY = ".fusionviewer";
		final String USER_HOME = "user.home";

		String os = System.getProperty("os.name").toLowerCase();
		
		String home;
		if (os.startsWith("mac")) {
			// If this is a Mac, go to the user's preferences directory
			home = System.getProperty(USER_HOME) + "/Library/Preferences/Insightful";

			isMac = true;
			isWindows = false;
		} else if (os.startsWith("windows")) {
			File appData = new File(System.getProperty(USER_HOME) + File.separator + "Application Data");
			if (appData.exists() && appData.isDirectory()) {
				StringBuffer sb = new StringBuffer();
				sb.append(System.getProperty(USER_HOME)).append(File.separator);
				sb.append("Application Data").append(File.separator);
				sb.append("Insightful").append(File.separator);
				sb.append(APPLICATION_NAME);
				home = sb.toString();
			} else {
				home = System.getProperty(USER_HOME) + File.separator +
					VIEWER_HOME_DIRECTORY;
			}
			
			isMac = false;
			isWindows = true;
		} else {
			home = System.getProperty(USER_HOME) + File.separator +
				VIEWER_HOME_DIRECTORY;
			
			isMac = false;
			isWindows = false;
		}
		
		File jarDirectory = new PlatformUtility().getJarFilePath();
		if (jarDirectory != null) {
			File testDir = new File(jarDirectory, "Data");
			File colormapsFile = new File(testDir, "Colormaps.xml");
			if (colormapsFile.exists())
				DATA = new File(jarDirectory, "Data");
			else
				DATA = new File("Data");
		} else {
			DATA = new File("Data");
		}
		
        PREFERENCES_DIRECTORY = new File(home);
        if (!PREFERENCES_DIRECTORY.exists())
        	PREFERENCES_DIRECTORY.mkdirs();
    }
}