/*
 * Copyright (c) 2008 Tom Parker <thpr@users.sourceforge.net>
 *
 * 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 plugin.lsttokens.spell;

import java.util.ArrayList;
import java.util.List;

import pcgen.base.lang.StringUtil;
import pcgen.cdom.base.Constants;
import pcgen.cdom.enumeration.StringKey;
import pcgen.core.spell.Spell;
import pcgen.rules.context.LoadContext;
import pcgen.rules.persistence.token.CDOMPrimaryToken;
import pcgen.rules.persistence.token.ParseResult;

/**
 * Class deals with TARGETAREA Token
 */
public class TargetareaToken implements CDOMPrimaryToken<Spell>
{

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

	@Override
	public ParseResult parseToken(LoadContext context, Spell spell, String value)
	{
		if (value == null || value.isEmpty())
		{
			return new ParseResult.Fail(getTokenName()
				+ " arguments may not be empty", context);
		}
		if (Constants.LST_DOT_CLEAR.equals(value))
		{
			context.getObjectContext().remove(spell, StringKey.TARGET_AREA);
		}
		else
		{
			if (!StringUtil.hasBalancedParens(value))
			{
				return new ParseResult.Fail("Unbalanced parentheses in "
					+ getTokenName() + " '" + value + "' used in spell "
					+ spell, context);
			}
			context.getObjectContext().put(spell, StringKey.TARGET_AREA, value);
		}
		return ParseResult.SUCCESS;
	}

	@Override
	public String[] unparse(LoadContext context, Spell spell)
	{
		String target = context.getObjectContext().getString(spell,
			StringKey.TARGET_AREA);
		boolean globalClear =
				context.getObjectContext().wasRemoved(spell,
					StringKey.TARGET_AREA);
		List<String> list = new ArrayList<>();
		if (globalClear)
		{
			list.add(Constants.LST_DOT_CLEAR);
		}
		if (target != null)
		{
			list.add(target);
		}
		if (list.isEmpty())
		{
			return null;
		}
		return list.toArray(new String[list.size()]);
	}

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