/*
 Copyright (C) 2008 Srinivas Hasti

 This source code is release under the BSD License.

 This file is part of JQuantLib, a free-software/open-source library
 for financial quantitative analysts and developers - http://jquantlib.org/

 JQuantLib is free software: you can redistribute it and/or modify it
 under the terms of the JQuantLib license.  You should have received a
 copy of the license along with this program; if not, please email
 . The license is also available online at
 .

 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 license for more details.

 JQuantLib is based on QuantLib. http://quantlib.org/
 When applicable, the original copyright notice follows this notice.
 */

package org.jquantlib.time.calendars;

import static org.jquantlib.time.Month.December;
import static org.jquantlib.time.Month.January;
import static org.jquantlib.time.Month.May;

import org.jquantlib.lang.annotation.QualityAssurance;
import org.jquantlib.lang.annotation.QualityAssurance.Quality;
import org.jquantlib.lang.annotation.QualityAssurance.Version;
import org.jquantlib.time.Calendar;
import org.jquantlib.time.Date;
import org.jquantlib.time.Month;
import org.jquantlib.time.Weekday;

/**
 * TARGET calendar relative to the European Central Bank
 * 

 * This is a holiday calendar representing  the
 * Trans-european Automated Real-time Gross Express-settlement Transfer
 * system calendar.
 * 

 * 
Saturdays
 * 
Sundays
 * 
New Year's Day, JANUARY 1st
 * 
Good Friday (since 2000)
 * 
Easter Monday (since 2000)
 * 
Labour Day, May 1st (since 2000)
 * 
Christmas, December 25th
 * 
Day of Goodwill, December 26th (since 2000)
 * 
December 31st (1998, 1999, and 2001)
 *
 * @see European Central Bank
 *
 * @author Srinivas Hasti
 *
 * @category calendars
 */
@QualityAssurance(quality = Quality.Q3_DOCUMENTATION, version = Version.V097, reviewers = { "Richard Gomes" })
public class Target extends Calendar {

	//
	// public constructors
	//

	public Target() {
		impl = new Impl();
	}


	//
	// private final inner classes
	//

    private final class Impl extends Calendar.WesternImpl {

    	@Override
        public String name() {
    		return "TARGET";
    	}

    	@Override
        public boolean isBusinessDay(final Date date) {
    		final Weekday w = date.weekday();
    		final int d = date.dayOfMonth(), dd = date.dayOfYear();
    		final Month m = date.month();
    		final int y = date.year();
    		final int em = easterMonday(y);
    		if (isWeekend(w)
    		// New Year's Day
    				|| (d == 1 && m == January)
    				// Good Friday
    				|| (dd == em - 3 && y >= 2000)
    				// Easter Monday
    				|| (dd == em && y >= 2000)
    				// Labour Day
    				|| (d == 1 && m == May && y >= 2000)
    				// Christmas
    				|| (d == 25 && m == December)
    				// Day of Goodwill
    				|| (d == 26 && m == December && y >= 2000)
    				// December 31st, 1998, 1999, and 2001 only
    				|| (d == 31 && m == December && (y == 1998 || y == 1999 || y == 2001))) {
                return false;
            }
    		return true;
    	}
    }

}