/*
 * Copyright 2012-2017 Red Hat, Inc.
 *
 * This file is part of Thermostat.
 *
 * Thermostat 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, or (at your
 * option) any later version.
 *
 * Thermostat 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 Thermostat; see the file COPYING.  If not see
 * <http://www.gnu.org/licenses/>.
 *
 * Linking this code with other modules is making a combined work
 * based on this code.  Thus, the terms and conditions of the GNU
 * General Public License cover the whole combination.
 *
 * As a special exception, the copyright holders of this code give
 * you permission to link this code with independent modules to
 * produce an executable, regardless of the license terms of these
 * independent modules, and to copy and distribute the resulting
 * executable under terms of your choice, provided that you also
 * meet, for each linked independent module, the terms and conditions
 * of the license of that module.  An independent module is a module
 * which is not derived from or based on this code.  If you modify
 * this code, you may extend this exception to your version of the
 * library, but you are not obligated to do so.  If you do not wish
 * to do so, delete this exception statement from your version.
 */

package com.redhat.thermostat.web.server.containers;

/**
 * 
 * Version information of a servlet container.
 *
 */
public class ContainerVersion {

    public static final String UNKNOWN_SUFFIX = "UNKNOWN";
    
    private final int major;
    private final int minor;
    private final int micro;
    private final String suffix;
    
    /**
     * Constructor
     * 
     * @param major
     *            The major version number of the servlet container.
     * @param minor
     *            The minor version number of the servlet container.
     * @param micro
     *            The micro version number of the servlet container.
     * @param suffix
     *            Optional suffix of the servlet container version. May be
     *            {@code null}.
     */
    ContainerVersion(int major, int minor, int micro, String suffix) {
        this.major = major;
        this.minor = minor;
        this.micro = micro;
        this.suffix = suffix;
    }

    public int getMajor() {
        return major;
    }

    public int getMinor() {
        return minor;
    }

    public int getMicro() {
        return micro;
    }

    /**
     * 
     * @return Any other version suffix, such as qualifiers. Never, {@code null}
     *         . Returns {@link ContainerVersion#UNKNOWN_SUFFIX} if suffix was
     *         unknown or not set.
     * 
     */
    public String getSuffix() {
        if (suffix == null) {
            return UNKNOWN_SUFFIX;
        }
        return suffix;
    }
    
    @Override
    public String toString() {
        return major + "." + minor + "." + micro + "." + getSuffix();
    }
    
}