/*
 * This file is part of ADDIS (Aggregate Data Drug Information System).
 * ADDIS is distributed from http://drugis.org/.
 * Copyright © 2009 Gert van Valkenhoef, Tommi Tervonen.
 * Copyright © 2010 Gert van Valkenhoef, Tommi Tervonen, Tijs Zwinkels,
 * Maarten Jacobs, Hanno Koeslag, Florin Schimbinschi, Ahmad Kamal, Daniel
 * Reid.
 * Copyright © 2011 Gert van Valkenhoef, Ahmad Kamal, Daniel Reid, Florin
 * Schimbinschi.
 * Copyright © 2012 Gert van Valkenhoef, Daniel Reid, Joël Kuiper, Wouter
 * Reckman.
 * Copyright © 2013 Gert van Valkenhoef, Joël Kuiper.
 *
 * 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 org.drugis.addis.entities;

import org.apache.commons.math3.util.Precision;


public class FixedDose extends AbstractDose {
	public static final String PROPERTY_QUANTITY = "quantity";

	private Double d_quantity;
	
	public FixedDose(){
	}
	
	public FixedDose(double quantity, DoseUnit unit) {
		d_quantity = quantity;
		d_unit = unit;
	}
	
	public Double getQuantity() {
		return d_quantity;
	}

	public void setQuantity(Double quantity) {
		Double oldVal = d_quantity;
		d_quantity = quantity;
		firePropertyChange(PROPERTY_QUANTITY, oldVal, d_quantity);
	}
	
	@Override
	public String toString() {
		if (d_quantity == null || d_unit == null) {
			return "INCOMPLETE";
		}
		return d_quantity.toString() + " " + d_unit.getLabel();
	}
	
	@Override
	public boolean equals(Object o) {
		if (o instanceof FixedDose) {
			FixedDose other = (FixedDose)o;
			return Precision.equals(DoseUnit.convert(d_quantity, d_unit, other.getDoseUnit()), other.getQuantity(), Precision.EPSILON);
		}
		return false;
	}
	
	@Override
	public int hashCode() {
		int hash = 1;
		hash *= 31; 
		hash += getQuantity().hashCode();
		hash = hash * 31 + getDoseUnit().hashCode();
		return hash;
	}

	@Override
	public AbstractDose clone() {
		return new FixedDose(getQuantity(), getDoseUnit().clone());
	}
}