/*
 * VisionToken.java
 * Copyright 2003 (C) Devon Jones <soulcatcher@evilsoft.org>
 *
 * 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
 *
 * Created on December 15, 2003, 12:21 PM
 *
 * Current Ver: $Revision$
 *
 */
package plugin.exporttokens;

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

import pcgen.core.Globals;
import pcgen.core.Vision;
import pcgen.core.display.CharacterDisplay;
import pcgen.io.ExportHandler;
import pcgen.io.exporttoken.AbstractExportToken;

/**
 * {@code VisionToken} produces the output for the output token
 * VISION.
 *
 *
 * @author Devon Jones <soulcatcher@evilsoft.org>
 */
public class VisionToken extends AbstractExportToken
{
	/**
	 * @see pcgen.io.exporttoken.Token#getTokenName()
	 */
	@Override
	public String getTokenName()
	{
		return "VISION";
	}

	/**
	 * @see pcgen.io.exporttoken.AbstractExportToken#getToken(java.lang.String, pcgen.core.display.CharacterDisplay, pcgen.io.ExportHandler)
	 */
	@Override
	public String getToken(String tokenSource, CharacterDisplay display,
		ExportHandler eh)
	{
		StringTokenizer aTok = new StringTokenizer(tokenSource, ".");
		aTok.nextToken();

		List<Vision> visionList = new ArrayList<>(display.getVisionList());

		int visionIndex = 0;
		int startIndex = 0;

		if (aTok.hasMoreTokens())
		{
			try
			{
				startIndex = Integer.parseInt(aTok.nextToken());
				visionIndex = startIndex + 1;
			}
			catch (NumberFormatException e)
			{
				//TODO: Should this really be ignored?
			}
		}
		else
		{
			visionIndex = visionList.size();
		}

		if (visionList.isEmpty() || startIndex >= visionList.size())
		{
			return "";
		}

		List<Vision> subList =
				visionList.subList(Math.max(startIndex, 0), Math.min(
					visionIndex, visionList.size()));

		StringBuilder result = new StringBuilder();
		for (Vision vision : subList)
		{
			if (result.length() > 0)
			{
				result.append(", ");
			}
			result.append(vision.getType());
			String distStr = vision.getDistance().toString();
			int dist = 0;
			if ((distStr != null) && (!distStr.trim().isEmpty()))
			{
				dist = Integer.parseInt(distStr);
			}
			if (dist > 0)
			{
				result.append(" (");
				result.append(Globals.getGameModeUnitSet().displayDistanceInUnitSet(dist));
				result.append(Globals.getGameModeUnitSet().getDistanceUnit());
				result.append(")");
			}
		}
		
		return result.toString();
	}
}