/*
 * Moonlight|3D Copyright (C) 2006 The Moonlight|3D team
 * 
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 * 
 * This library 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 Lesser General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 * 
 * Created on Jan 1, 2006
 */
package ml.core.preferences;
/**
 * \package ml.core.preferences
 * 
 * This is the preferences system for Moonlight|3D. It
 * is responsible for loading, accessing and storing 
 * user preferences.
 * 
 * This package is part of the core program.
 */

import java.io.File;

public class Manager {
	private Preferences systemPreferences;
	private Preferences userPreferences;
	private Preferences currentPreferences;
	
	public Manager() {
		currentPreferences=new Preferences();
		systemPreferences=new Preferences();
		userPreferences=new Preferences();
	}
	
	public void updatePreferenceFiles() {
		currentPreferences.saveToFile(getUserPreferencesPath() + "preferences.xml");
	}
	
	private String getSystemPreferencesPath() {
		// use the installation directory for now - maybe there is a better solution
		return ml.core.State.getInstance().getInstallationDirectory() + System.getProperty("file.separator");
	}
	
	private String getUserPreferencesPath() {
		String moonlightDirectory="";
		File directory;
				
		if(System.getProperty("os.name").length()>=7) {
			if(System.getProperty("os.name").substring(0,7).equals("Windows")) {
				moonlightDirectory=System.getenv().get("APPDATA");
				moonlightDirectory+= System.getProperty("file.separator") + "Moonlight3D" + System.getProperty("file.separator");
			}
		} else {
			moonlightDirectory=System.getProperty("user.home") + System.getProperty("file.separator");
			moonlightDirectory+=".moonlight3d" + System.getProperty("file.separator"); 
		}
		
		directory=new File(moonlightDirectory);
		if(!directory.exists()) {
			if(!directory.mkdirs()) {
				return null;
			}
		}
		
		return moonlightDirectory;
	}
	
	public void loadPreferences() {
		try {
			systemPreferences.loadFromFile(getSystemPreferencesPath() + "preferences.xml");
		} catch(Exception e) {
			// ignore exception; it means file is missing and this isn't bad.
		}
		try {
			userPreferences.loadFromFile(getUserPreferencesPath() + "preferences.xml");
		} catch(Exception e) {
			// ignore exception; it means file is missing and this isn't bad.
			e.printStackTrace();
		}		
	}
	
	public void applyLoadedPreferences() {
		currentPreferences.setFrom(systemPreferences);
		currentPreferences.setFrom(userPreferences);
	}
	
	public Preferences getUserPreferences() {
		return userPreferences;
	}
	
	public Preferences getCurrentPreferences() {
		return currentPreferences;
	}
}