/*
 * EquipSetLoopDirective.java
 * Copyright 2013 (C) James Dempsey <jdempsey@users.sourceforge.net>
 *
 * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 * Created on 27/12/2013
 *
 * $Id$
 */
package pcgen.io.freemarker;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import pcgen.core.PlayerCharacter;
import pcgen.core.character.EquipSet;
import freemarker.core.Environment;
import freemarker.template.TemplateDirectiveBody;
import freemarker.template.TemplateDirectiveModel;
import freemarker.template.TemplateException;
import freemarker.template.TemplateModel;
import freemarker.template.TemplateModelException;

/**
 * Implements a custom Freemarker macro to loop over the characte's equipment 
 * sets
 * 
 * <p>Parameters: None</p>
 * 
 * <p>Nested content is output once for each loop</p>
 * 
 * @author James Dempsey <jdempsey@users.sourceforge.net>
 */
public class EquipSetLoopDirective implements TemplateDirectiveModel
{
	private PlayerCharacter pc;

	/**
	 * Create a new instance of EquipSetLoopDirective
	 * @param pc The character being exported.
	 */
	public EquipSetLoopDirective(PlayerCharacter pc)
	{
		this.pc = pc;
	}

	@SuppressWarnings("rawtypes")
	@Override
	public void execute(Environment env, Map params, TemplateModel[] loopVars,
		TemplateDirectiveBody body) throws TemplateException, IOException
	{
		if (body == null)
		{
			throw new TemplateModelException(
				"This directive must have content.");
		}
		
		List<EquipSet> eqSetList = new ArrayList<>();
		EquipSet currSet = null;
		String currIdPath = pc.getCalcEquipSetId();
		for (EquipSet es : pc.getDisplay().getEquipSet())
		{
			if (es.getParentIdPath().equals("0"))
			{
				eqSetList.add(es);
				if (es.getIdPath().equals(currIdPath))
				{
					currSet = es;
				}
			}
		}

		for (EquipSet equipSet : eqSetList)
		{
			pc.setCalcEquipSetId(equipSet.getIdPath());
			pc.setCalcEquipmentList(equipSet.getUseTempMods());

			// Executes the nested body (same as <#nested> in FTL). In this
			// case we don't provide a special writer as the parameter:
			body.render(env.getOut());
		}
		
		if (currSet != null)
		{
			pc.setCalcEquipSetId(currSet.getIdPath());
			pc.setCalcEquipmentList(currSet.getUseTempMods());
		}
	}

}