/*
 * (c) Copyright 2010-2011 AgileBirds
 *
 * This file is part of OpenFlexo.
 *
 * OpenFlexo is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * OpenFlexo 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with OpenFlexo. If not, see <http://www.gnu.org/licenses/>.
 *
 */
package org.openflexo.xml.diff3.mergerule;

import java.awt.Point;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.StringTokenizer;

public class MergeUtils {

	/** Specify date format */
	protected static final String _dateFormat = new SimpleDateFormat().toPattern();

	public static Date dateFromString(String value) {
		try {
			StringTokenizer st = new StringTokenizer(value, ",");
			String dateFormat = _dateFormat;
			String dateAsString = null;
			if (st.hasMoreTokens()) {
				dateFormat = st.nextToken();
			}
			if (st.hasMoreTokens()) {
				dateAsString = st.nextToken();
			}
			if (dateAsString != null) {
				return new SimpleDateFormat(dateFormat).parse(dateAsString);
			}
		} catch (ParseException e) {
		}
		SimpleDateFormat formatter = new SimpleDateFormat(_dateFormat);
		Date currentTime = new Date();
		String dateString = formatter.format(currentTime);
		System.err.println("Supplied value is not parsable as a date. " + " Date format should be for example " + dateString);
		return null;
	}

	public static String dateToString(Date value) {
		Date date = value;
		if (date != null) {
			return _dateFormat + "," + new SimpleDateFormat(_dateFormat).format(date);
		} else {
			return null;
		}
	}

	/**
	 * Return a string representation of a date, according to valid date format
	 */
	public static String getDateRepresentation(Date date) {
		if (date != null) {
			return new SimpleDateFormat(_dateFormat).format(date);
		} else {
			return null;
		}
	}

	public static Point pointFromString(String value1) {
		// TODO Auto-generated method stub
		return new Point(Integer.valueOf(value1.substring(0, value1.indexOf(","))),
				Integer.valueOf(value1.substring(value1.indexOf(",") + 1)));
	}

	public static String pointToString(Point p) {
		return p.x + "," + p.y;
	}

}