/*
 * Copyright 2008 (C) Thomas Parker <thpr@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
 */
package plugin.lsttokens;

import java.util.LinkedList;
import java.util.List;

import pcgen.base.formula.Formula;
import pcgen.cdom.base.CDOMObject;
import pcgen.cdom.base.Constants;
import pcgen.cdom.base.FormulaFactory;
import pcgen.cdom.base.Ungranted;
import pcgen.cdom.content.SpellResistance;
import pcgen.cdom.enumeration.ObjectKey;
import pcgen.rules.context.LoadContext;
import pcgen.rules.persistence.token.CDOMPrimaryToken;
import pcgen.rules.persistence.token.ParseResult;

/**
 * @author djones4
 *
 */
public class SrLst implements CDOMPrimaryToken<CDOMObject>
{

	@Override
	public String getTokenName()
	{
		return "SR";
	}

	@Override
	public ParseResult parseToken(LoadContext context, CDOMObject obj,
		String value)
	{
		if (obj instanceof Ungranted)
		{
			return new ParseResult.Fail("Cannot use " + getTokenName()
				+ " on an Ungranted object type: "
				+ obj.getClass().getSimpleName(), context);
		}
		if (Constants.LST_DOT_CLEAR.equals(value))
		{
			context.getObjectContext().remove(obj, ObjectKey.SR);
		}
		else
		{
			Formula formula = FormulaFactory.getFormulaFor(value);
			if (!formula.isValid())
			{
				return new ParseResult.Fail("Formula in " + getTokenName()
						+ " was not valid: " + formula.toString(), context);
			}
			context.getObjectContext().put(obj, ObjectKey.SR,
					new SpellResistance(formula));
		}
		return ParseResult.SUCCESS;
	}

	@Override
	public String[] unparse(LoadContext context, CDOMObject obj)
	{
		SpellResistance sr = context.getObjectContext().getObject(obj,
				ObjectKey.SR);
		boolean b = context.getObjectContext().wasRemoved(obj, ObjectKey.SR);
		List<String> list = new LinkedList<>();
		if (b)
		{
			list.add(Constants.LST_DOT_CLEAR);
		}
		if (sr != null)
		{
			list.add(sr.getLSTformat());
		}
		if (list.isEmpty())
		{
			return null;
		}
		return list.toArray(new String[list.size()]);
	}

	@Override
	public Class<CDOMObject> getTokenClass()
	{
		return CDOMObject.class;
	}
}