/*
 * Copyright 2012-2015 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.common;

import java.util.Objects;
import java.util.UUID;

/**
 * Simple data structure which uniquely identifies shared state between
 * client (WebStorage) and server (WebStorageEndPoint).
 *
 */
public class SharedStateId {

    // The id of the statement
    private final int id;
    // A unique token only used once per webapp deployment.
    private final UUID serverToken;
    
    public SharedStateId(int id, UUID serverToken) {
        this.id = id;
        this.serverToken = serverToken;
    }
    
    public int getId() {
        return id;
    }

    public UUID getServerToken() {
        return serverToken;
    }

    @Override
    public boolean equals(Object other) {
        if (other == null || other.getClass() != SharedStateId.class) {
            return false;
        }
        SharedStateId o = (SharedStateId)other;
        return id == o.id && serverToken.equals(o.serverToken);
    }
    
    @Override
    public int hashCode() {
        return Objects.hash(id, serverToken);
    }
    
    @Override
    public String toString() {
        return serverToken + ":" + id;
    }
}