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/*
 * Southampton University Map App
 * Copyright (C) 2011  Christopher Baines
 * 
 * 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 2
 * 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, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */

package net.cbaines.suma;

import com.j256.ormlite.field.DatabaseField;
import com.j256.ormlite.table.DatabaseTable;

/**
 * Represents a bus
 * 
 * @author Christopher Baines <cbaines8@gmail.com>
 * 
 */
@DatabaseTable(tableName = "buses")
public class Bus {

	final static String ID_FIELD_NAME = "id";
	final static String ROUTE_FIELD_NAME = "route";
	final static String DIRECTION_FIELD_NAME = "direction";

	@DatabaseField(generatedId = true)
	int gid;

	/**
	 * The identification number of the bus.
	 */
	@DatabaseField(canBeNull = true)
	String id;

	/**
	 * The route the bus is travelling.
	 */
	@DatabaseField(canBeNull = false, foreign = true)
	BusRoute route;

	/**
	 * The direction which the bus is travelling.
	 */
	@DatabaseField(canBeNull = true)
	String direction;

	/**
	 * The destination the bus is travelling towards.
	 */
	@DatabaseField(canBeNull = true, foreign = true)
	BusStop destination;

	/**
	 * The destination the bus is travelling towards.
	 */
	@DatabaseField(canBeNull = true)
	String destinationString;

	Bus() {
	}

	/**
	 * Create a bus.
	 * 
	 * @param id
	 *            The identification number of the bus.
	 * @param route
	 *            The route the bus is travelling.
	 * @param dir
	 *            The direction which the bus is travelling.
	 */
	Bus(String id, BusRoute route, String direction) {
		this.id = id;
		this.route = route;
		this.direction = direction;
	}

	/**
	 * Create a bus.
	 * 
	 * @param id
	 *            The identification number of the bus.
	 * @param route
	 *            The route the bus is travelling.
	 */
	Bus(String id, BusRoute route) {
		this(id, route, null);
	}

	public String toString() {
		return String.valueOf(id + " (" + route.code + direction + ")");
	}

	String getName() {
		if (direction != null) {
			return route.code + direction;
		} else {
			return route.code;
		}
	}

	@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + gid;
		return result;
	}

	@Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (obj == null)
			return false;
		if (getClass() != obj.getClass())
			return false;
		Bus other = (Bus) obj;
		if (id != other.id)
			return false;
		return true;
	}

}