/*
 * 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.pcclass;

import java.util.StringTokenizer;

import pcgen.cdom.base.Constants;
import pcgen.cdom.content.LevelExchange;
import pcgen.cdom.enumeration.ObjectKey;
import pcgen.cdom.reference.CDOMSingleRef;
import pcgen.core.PCClass;
import pcgen.rules.context.LoadContext;
import pcgen.rules.persistence.token.AbstractTokenWithSeparator;
import pcgen.rules.persistence.token.CDOMPrimaryToken;
import pcgen.rules.persistence.token.ComplexParseResult;
import pcgen.rules.persistence.token.ParseResult;

/**
 * Class deals with EXCHANGELEVEL Token
 */
public class ExchangelevelToken extends AbstractTokenWithSeparator<PCClass>
		implements CDOMPrimaryToken<PCClass>
{

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

	@Override
	protected char separator()
	{
		return '|';
	}

	@Override
	protected ParseResult parseTokenWithSeparator(LoadContext context,
		PCClass pcc, String value)
	{
		final StringTokenizer tok = new StringTokenizer(value, Constants.PIPE);
		if (tok.countTokens() != 4)
		{
			return new ParseResult.Fail(getTokenName()
					+ " must have 4 | delimited arguments : " + value, context);
		}

		String classString = tok.nextToken();
		CDOMSingleRef<PCClass> cl = context.getReferenceContext().getCDOMReference(PCClass.class,
				classString);
		String mindlString = tok.nextToken();
		int mindl;
		try
		{
			mindl = Integer.parseInt(mindlString);
		}
		catch (NumberFormatException nfe)
		{
			return new ParseResult.Fail(getTokenName() + " expected an integer: "
					+ mindlString, context);
		}
		String maxdlString = tok.nextToken();
		int maxdl;
		try
		{
			maxdl = Integer.parseInt(maxdlString);
		}
		catch (NumberFormatException nfe)
		{
			return new ParseResult.Fail(getTokenName() + " expected an integer: "
					+ maxdlString, context);
		}
		String minremString = tok.nextToken();
		int minrem;
		try
		{
			minrem = Integer.parseInt(minremString);
		}
		catch (NumberFormatException nfe)
		{
			return new ParseResult.Fail(getTokenName() + " expected an integer: "
					+ minremString, context);
		}
		try
		{
			LevelExchange le = new LevelExchange(cl, mindl, maxdl, minrem);
			context.getObjectContext().put(pcc, ObjectKey.EXCHANGE_LEVEL, le);
			return ParseResult.SUCCESS;
		}
		catch (IllegalArgumentException e)
		{
			ComplexParseResult pr = new ComplexParseResult();
			pr.addErrorMessage("Error in " + getTokenName() + " "
					+ e.getMessage());
			pr.addErrorMessage("  Token contents: " + value);
			return pr;
		}
	}

	@Override
	public String[] unparse(LoadContext context, PCClass pcc)
	{
		LevelExchange le = context.getObjectContext().getObject(pcc,
				ObjectKey.EXCHANGE_LEVEL);
		if (le == null)
		{
			return null;
		}
		StringBuilder sb = new StringBuilder();
		sb.append(le.getExchangeClass().getLSTformat(false)).append(Constants.PIPE);
		sb.append(le.getMinDonatingLevel()).append(Constants.PIPE);
		sb.append(le.getMaxDonatedLevels()).append(Constants.PIPE);
		sb.append(le.getDonatingLowerLevelBound());
		return new String[] { sb.toString() };
	}

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