InitialiseResponseMessage.java

/**
 * Copyright (c) 2010-2016 by the respective copyright holders.
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 */
package org.openhab.binding.plugwise.protocol;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.apache.commons.lang.StringUtils;

/**
 * Once the network is initialized we will get some useful information back from the Stick, such as the MAC address of
 * the
 * Circle+ driving the network
 *
 * @author Karel Goderis
 * @since 1.1.0
 */
public class InitialiseResponseMessage extends Message {

    private static final Pattern RESPONSE_PATTERN = Pattern
            .compile("(\\w{16})(\\w{2})(\\w{2})(\\w{16})(\\w{4})(\\w{2})");

    boolean online;
    String networkID;
    String unknown1;
    String unknown2;
    String shortNetworkID;
    String circlePlusMAC;

    public InitialiseResponseMessage(int sequenceNumber, String payLoad) {
        super(sequenceNumber, payLoad);
        type = MessageType.INITIALISE_RESPONSE;
    }

    public InitialiseResponseMessage(String payLoad) {
        super(payLoad);
        type = MessageType.INITIALISE_RESPONSE;
    }

    @Override
    public String getMAC() {
        return MAC;
    }

    public boolean isOnline() {
        return online;
    }

    public String getNetworkID() {
        return networkID;
    }

    public String getCirclePlusMAC() {
        return circlePlusMAC;
    }

    @Override
    protected void parsePayLoad() {
        Matcher matcher = RESPONSE_PATTERN.matcher(payLoad);
        if (matcher.matches()) {
            MAC = matcher.group(1);
            unknown1 = matcher.group(2);
            online = (Integer.parseInt(matcher.group(3), 16) == 1);
            networkID = matcher.group(4);
            shortNetworkID = matcher.group(5);
            unknown2 = matcher.group(6);

            // now some serious protocol reverse-engineering assumption. Circle+ MAC = networkID with first two bytes
            // replaced by 00
            circlePlusMAC = "00" + StringUtils.right(networkID, StringUtils.length(networkID) - 2);
        } else {
            logger.debug("Plugwise protocol InitialiseResponse error: {} does not match", payLoad);
        }

    }

    @Override
    protected String payLoadToHexString() {
        return unknown1 + String.format("%02X", online ? 1 : 0) + networkID + shortNetworkID + unknown2;
    }

}