/*
 * 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.race;

import java.util.Map;
import java.util.Set;
import java.util.StringTokenizer;
import java.util.TreeSet;

import pcgen.cdom.base.Constants;
import pcgen.cdom.enumeration.MapKey;
import pcgen.core.Race;
import pcgen.rules.context.LoadContext;
import pcgen.rules.context.MapChanges;
import pcgen.rules.persistence.token.AbstractNonEmptyToken;
import pcgen.rules.persistence.token.CDOMPrimaryToken;
import pcgen.rules.persistence.token.ParseResult;

/**
 * Class deals with CR Token
 */
public class CrModToken extends AbstractNonEmptyToken<Race> implements
		CDOMPrimaryToken<Race>
{

	/**
	 * Get the token name
	 */
	@Override
	public String getTokenName()
	{
		return "CRMOD";
	}

	@Override
	protected ParseResult parseNonEmptyToken(LoadContext context, Race race, String value)
	{
		int pipeLoc = value.indexOf(Constants.PIPE);
		if (pipeLoc == -1)
		{
			return new ParseResult.Fail(getTokenName() + " expecting '|', format is: "
					+ "ClassTypes|CRMod was: " + value, context);
		}
		if (pipeLoc != value.lastIndexOf(Constants.PIPE))
		{
			return new ParseResult.Fail(getTokenName() + " expecting only one '|', "
					+ "format is: ClassTypes|CRMod was: " + value, context);
		}
		String keys = value.substring(0, pipeLoc);
		if (keys.isEmpty())
		{
			return new ParseResult.Fail(getTokenName() + " expecting non-empty class type, "
					+ "format is: ClassTypes|CRMod was: " + value, context);
		}
		String val = value.substring(pipeLoc + 1);
		if (val.isEmpty())
		{
			return new ParseResult.Fail(getTokenName() + " expecting non-empty CR mod, "
					+ "format is: ClassTypes|CRMod was: " + value, context);
		}
		try 
		{
			StringTokenizer aTok = new StringTokenizer(keys, Constants.DOT, false);
			while (aTok.hasMoreTokens())
			{
				context.getObjectContext().put(race, MapKey.CRMOD, aTok.nextToken(), Integer.valueOf(val));
			}
		}
		catch (NumberFormatException e)
		{
			return new ParseResult.Fail(getTokenName() + " expecting number CR mod, "
					+ "format is: ClassTypes|CRMod was: " + value, context);
		}
		
		return ParseResult.SUCCESS;
	}

	/**
	 * Unparse the CR token
	 * 
	 * @param context
	 * @param race
	 * @return String array representing the CR token
	 */
	@Override
	public String[] unparse(LoadContext context, Race race)
	{
		MapChanges<String, Integer> changes = context.getObjectContext()
				.getMapChanges(race, MapKey.CRMOD);
		if (changes == null || changes.isEmpty())
		{
			return null;
		}
		Set<String> set = new TreeSet<>();
		Map<String, Integer> added = changes.getAdded();
		for (Map.Entry<String, Integer> me : added.entrySet())
		{
			set.add(new StringBuilder().append(me.getKey()).append(
					Constants.PIPE).append(me.getValue()).toString());
		}
		return set.toArray(new String[set.size()]);
	}

	/**
	 * Get the token class
	 * @return Token class of type Race
	 */
	@Override
	public Class<Race> getTokenClass()
	{
		return Race.class;
	}
}