TimeUnit.java

/* 
 * Copyright (C) 2011 - 2013 Michi Gysel <michael.gysel@gmail.com>
 *
 * This file is part of the HSR Timetable.
 *
 * This program 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.
 *
 * 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package ch.scythe.hsr.enumeration;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.Collections;
import java.util.EnumSet;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;

import ch.scythe.hsr.error.EnumNotFoundException;

public enum TimeUnit implements Serializable {

	LESSON_1(2, "07:05", "07:50"), //
	LESSON_2(3, "08:10", "08:55"), //
	LESSON_3(4, "09:05", "09:50"), //
	LESSON_4(5, "10:10", "10:55"), //
	LESSON_5(6, "11:05", "11:50"), //
	LESSON_6(7, "12:10", "12:55"), //
	LESSON_7(8, "13:10", "13:55"), //
	LESSON_8(9, "14:05", "14:50"), //
	LESSON_9(10, "15:10", "15:55"), //
	LESSON_10(11, "16:05", "16:50"), //
	LESSON_11(12, "17:00", "17:45"), //
	LESSON_12(13, "17:55", "18:40"), //
	LESSON_13(14, "19:10", "19:55"), //
	LESSON_14(15, "20:05", "20:50");

	private final Integer id;
	private final String startTime;
	private final String endTime;
	private static final Map<Integer, TimeUnit> lookup = new LinkedHashMap<Integer, TimeUnit>();

	private TimeUnit(Integer id, String startTime, String endTime) {
		this.id = id;
		this.startTime = startTime;
		this.endTime = endTime;
	}

	static {
		for (TimeUnit unit : EnumSet.allOf(TimeUnit.class)) {
			lookup.put(unit.getId(), unit);
		}
	}

	public int getId() {
		return id;
	}

	public String getStartTime() {
		return startTime;
	}

	public String getEndTime() {
		return endTime;
	}

	public static TimeUnit findById(Integer id) throws EnumNotFoundException {
		TimeUnit result = lookup.get(id);
		if (result == null) {
			throw new EnumNotFoundException("Enum does not have a value for " + id);
		}
		return result;
	}

	public static List<TimeUnit> getAll() {
		return Collections.unmodifiableList(new ArrayList<TimeUnit>(lookup.values()));
	}

	public String toDurationString(String delimiter) {
		return startTime + delimiter + endTime;
	}

}