/*
 * CampaignOutput.java
 * Copyright 2001 (C) Bryan McRoberts <merton_monk@yahoo.com>
 *
 * 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 April 21, 2001, 2:15 PM
 */
package pcgen.persistence.lst;

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.UnsupportedEncodingException;
import java.util.Collection;
import java.util.List;

import pcgen.cdom.enumeration.ListKey;
import pcgen.cdom.enumeration.StringKey;
import pcgen.core.Campaign;
import pcgen.io.FileAccess;
import pcgen.rules.context.LoadContext;
import pcgen.system.ConfigurationSettings;
import pcgen.util.Logging;

/**
 * {@code CampaignOutput} writes out data sets to PCC files.
 *
 * @author Bryan McRoberts <merton_monk@users.sourceforge.net>
 */
public final class CampaignOutput
{
	/**
	 * Private constructor added to inhibit instance creation for this utility class.
	 */
	private CampaignOutput()
	{
		// Empty Constructor
	}

	/**
	 * @param campaign
	 */
	public static void output(LoadContext context, Campaign campaign)
	{
		final File outFile =
				new File(ConfigurationSettings.getPccFilesDir()
					+ File.separator + campaign.getSafe(StringKey.DESTINATION));
		BufferedWriter out = null;

		try
		{
			out =
					new BufferedWriter(new OutputStreamWriter(
						new FileOutputStream(outFile), "UTF-8"));

			List<String> commentList = campaign.getListFor(ListKey.COMMENT);
			if (commentList != null)
			{
				for (String s : commentList)
				{
					FileAccess.write(out, "#" + s);
					FileAccess.newLine(out);
				}
			}

			Collection<String> lines = context.unparse(campaign);
			if (lines != null)
			{
				for (String line : lines)
				{
					FileAccess.write(out, line);
					FileAccess.newLine(out);
				}
			}
		}
		catch (FileNotFoundException | UnsupportedEncodingException exc)
		{
			Logging.errorPrint("Error while writing to " + outFile.toString(),
				exc);

			//TODO: Is this ok? Shouldn't something be done if writing a campaign fails?
		} finally
		{
			try
			{
				if (out != null)
				{
					out.flush();
					out.close();
				}
			}
			catch (IOException ex)
			{
				Logging.errorPrint("Can't close " + outFile.toString(), ex); //Not much more to do really...
			}
		}
	}
}