/**
 * Warlock, the open-source cross-platform game client
 *  
 * Copyright 2008, Warlock LLC, and individual contributors as indicated
 * by the @authors tag. 
 *
 * This 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 software 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 software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package cc.warlock.core.client.settings.internal;

import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.dom4j.DocumentHelper;
import org.dom4j.Element;

import cc.warlock.core.client.settings.IVariable;
import cc.warlock.core.client.settings.IVariableProvider;

public class VariableConfigurationProvider extends ClientConfigurationProvider implements IVariableProvider {

	protected HashMap<String, IVariable> variables = new HashMap<String, IVariable>();
	
	public VariableConfigurationProvider ()
	{
		super("variables");
		
		setHandleChildren(false);
	}
	
	public void addVariable(IVariable variable) {
		variables.put(variable.getIdentifier(), variable);
	}
	
	public void addVariable(String identifier, String value) {
		addVariable(new Variable(this, identifier, value));
	}
	
	public void setVariable(String id, IVariable variable) {
		variables.put(id, variable);
	}

	public IVariable getVariable(String identifier) {
		if (variables.containsKey(identifier)) {
			return variables.get(identifier);
		}
		return null;
	}

	public Collection<? extends IVariable> getVariables() {
		return variables.values();
	}

	public void removeVariable(String identifier) {
		variables.remove(identifier);
	}
	
	@Override
	protected void parseData() {}

	@Override
	protected void parseChild(Element child) {
		if (child.getName().equals("variable"))
		{
			String name = child.attributeValue("id");
			String value = child.getStringValue();
			
			Variable variable = new Variable(this, name, value);
			variables.put(name, variable);
		}
	}
	
	@Override
	protected void saveTo(List<Element> elements) {
		Element varsElement = DocumentHelper.createElement("variables");
		
		for (Map.Entry<String, IVariable> entry : variables.entrySet())
		{
			Element element = varsElement.addElement("variable");
			element.addAttribute("id", entry.getKey());
			element.addText(entry.getValue().getValue());
			
		}
		elements.add(varsElement);
	}
}