/*
 * Copyright (c) Thomas Parker, 2010.
 * 
 * This program 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 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 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
 */
package pcgen.cdom.facet.analysis;

import pcgen.cdom.base.CDOMObject;
import pcgen.cdom.base.CDOMReference;
import pcgen.cdom.enumeration.CharID;
import pcgen.cdom.enumeration.ListKey;
import pcgen.cdom.enumeration.ObjectKey;
import pcgen.cdom.enumeration.SkillCost;
import pcgen.cdom.facet.base.AbstractSubScopeFacet;
import pcgen.cdom.facet.event.DataFacetChangeEvent;
import pcgen.cdom.facet.event.DataFacetChangeListener;
import pcgen.cdom.facet.model.ClassFacet;
import pcgen.cdom.facet.model.ClassLevelFacet;
import pcgen.cdom.facet.model.DomainFacet;
import pcgen.cdom.inst.PCClassLevel;
import pcgen.core.Domain;
import pcgen.core.PCClass;
import pcgen.core.Skill;
import pcgen.util.Logging;

/**
 * LocalSkillCostFacet is a Facet to track Skill costs
 * 
 * @author Thomas Parker (thpr [at] yahoo.com)
 */
public class LocalSkillCostFacet extends
		AbstractSubScopeFacet<PCClass, SkillCost, Skill> implements
		DataFacetChangeListener<CharID, CDOMObject>
{
	private DomainFacet domainFacet;
	
	private ClassFacet classFacet;
	
	private ClassLevelFacet classLevelFacet;

	/**
	 * Adds the SkillCost objects granted by CDOMObjects, as applied directly to
	 * a PCClass, when a CDOMObject is added to a Player Character.
	 * 
	 * Triggered when one of the Facets to which LocalSkillCostFacet listens
	 * fires a DataFacetChangeEvent to indicate a CDOMObject was added to a
	 * Player Character.
	 * 
	 * @param dfce
	 *            The DataFacetChangeEvent containing the information about the
	 *            change
	 * 
	 * @see pcgen.cdom.facet.event.DataFacetChangeListener#dataAdded(pcgen.cdom.facet.event.DataFacetChangeEvent)
	 */
	@Override
	public void dataAdded(DataFacetChangeEvent<CharID, CDOMObject> dfce)
	{
		CDOMObject cdo = dfce.getCDOMObject();
		CharID id = dfce.getCharID();
		PCClass owner;
		if (cdo instanceof Domain)
		{
			owner = domainFacet.getSource(id, (Domain) cdo).getPcclass();
		}
		else if (cdo instanceof PCClassLevel)
		{
			owner = (PCClass) cdo.get(ObjectKey.PARENT);
		}
		else if (cdo instanceof PCClass)
		{
			owner = (PCClass) cdo;
		}
		else
		{
			Logging.errorPrint(getClass().getSimpleName() + " was given " + cdo
				+ " which is not an expected object type");
			return;
		}
		for (CDOMReference<Skill> ref : cdo.getSafeListFor(ListKey.LOCALCSKILL))
		{
			for (Skill sk : ref.getContainedObjects())
			{
				add(id, owner, SkillCost.CLASS, sk, cdo);
			}
		}
		for (CDOMReference<Skill> ref : cdo.getSafeListFor(ListKey.LOCALCCSKILL))
		{
			for (Skill sk : ref.getContainedObjects())
			{
				add(id, owner, SkillCost.CROSS_CLASS, sk, cdo);
			}
		}
	}

	/**
	 * Removes the SkillCost objects granted by CDOMObjects, as applied directly
	 * to a PCClass, when a CDOMObject is removed from a Player Character.
	 * 
	 * Triggered when one of the Facets to which LocalSkillCostFacet listens
	 * fires a DataFacetChangeEvent to indicate a CDOMObject was removed from a
	 * Player Character.
	 * 
	 * @param dfce
	 *            The DataFacetChangeEvent containing the information about the
	 *            change
	 * 
	 * @see pcgen.cdom.facet.event.DataFacetChangeListener#dataRemoved(pcgen.cdom.facet.event.DataFacetChangeEvent)
	 */
	@Override
	public void dataRemoved(DataFacetChangeEvent<CharID, CDOMObject> dfce)
	{
		removeAllFromSource(dfce.getCharID(), dfce.getCDOMObject());
	}

	public void setDomainFacet(DomainFacet domainFacet)
	{
		this.domainFacet = domainFacet;
	}

	public void setClassFacet(ClassFacet classFacet)
	{
		this.classFacet = classFacet;
	}

	public void setClassLevelFacet(ClassLevelFacet classLevelFacet)
	{
		this.classLevelFacet = classLevelFacet;
	}

	/**
	 * Initializes the connections for LocalSkillCostFacet to other facets.
	 * 
	 * This method is automatically called by the Spring framework during
	 * initialization of the LocalSkillCostFacet.
	 */
	public void init()
	{
		classFacet.addDataFacetChangeListener(this);
		domainFacet.addDataFacetChangeListener(this);
		classLevelFacet.addDataFacetChangeListener(this);
	}
}