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   1 /**
   2  * Copyright (c) 2010-2023 Contributors to the openHAB project
   3  *
   4  * See the NOTICE file(s) distributed with this work for additional
   5  * information.
   6  *
   7  * This program and the accompanying materials are made available under the
   8  * terms of the Eclipse Public License 2.0 which is available at
   9  * http://www.eclipse.org/legal/epl-2.0
  10  *
  11  * SPDX-License-Identifier: EPL-2.0
  12  */
  13 package org.openhab.binding.luxom.internal.handler;
  14
  15 import java.util.List;
  16
  17 import org.eclipse.jdt.annotation.NonNullByDefault;
  18 import org.eclipse.jdt.annotation.Nullable;
  19 import org.openhab.binding.luxom.internal.protocol.LuxomAction;
  20 import org.openhab.binding.luxom.internal.protocol.LuxomCommand;
  21 import org.openhab.core.thing.Bridge;
  22 import org.openhab.core.thing.Thing;
  23 import org.openhab.core.thing.ThingStatus;
  24 import org.openhab.core.thing.ThingStatusDetail;
  25 import org.openhab.core.thing.ThingStatusInfo;
  26 import org.openhab.core.thing.binding.BaseThingHandler;
  27 import org.slf4j.Logger;
  28 import org.slf4j.LoggerFactory;
  29
  30 /**
  31  * Base type for all Luxom thing handlers.
  32  *
  33  * @author Kris Jespers - Initial contribution
  34  */
  35 @NonNullByDefault
  36 public abstract class LuxomThingHandler extends BaseThingHandler {
  37     private final Logger logger = LoggerFactory.getLogger(LuxomThingHandler.class);
  38
  39     private String address = "";
  40
  41     @Override
  42     public void initialize() {
  43         String id = (String) getConfig().get("address");
  44         if (id == null) {
  45             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.CONFIGURATION_ERROR,
  46                     "@text/status.thing-address-missing");
  47             address = "noaddress";
  48             return;
  49         }
  50         address = id;
  51     }
  52
  53     public LuxomThingHandler(Thing thing) {
  54         super(thing);
  55     }
  56
  57     public abstract void handleCommandComingFromBridge(LuxomCommand command);
  58
  59     public final String getAddress() {
  60         return address;
  61     }
  62
  63     /**
  64      * Queries for any device state needed at initialization time or after losing connectivity to the bridge, and
  65      * updates device status. Will be called when bridge status changes to ONLINE and thing has status
  66      * OFFLINE:BRIDGE_OFFLINE.
  67      */
  68     protected abstract void initDeviceState();
  69
  70     /**
  71      * Called when changing thing status to offline. Subclasses may override to take any needed actions.
  72      */
  73     protected void thingOfflineNotify() {
  74     }
  75
  76     protected @Nullable LuxomBridgeHandler getBridgeHandler() {
  77         Bridge bridge = getBridge();
  78
  79         return bridge == null ? null : (LuxomBridgeHandler) bridge.getHandler();
  80     }
  81
  82     @Override
  83     public void bridgeStatusChanged(ThingStatusInfo bridgeStatusInfo) {
  84         logger.debug("Bridge status changed to {} for luxom device handler {}", bridgeStatusInfo.getStatus(),
  85                 getAddress());
  86
  87         if (bridgeStatusInfo.getStatus() == ThingStatus.ONLINE
  88                 && getThing().getStatusInfo().getStatusDetail() == ThingStatusDetail.BRIDGE_OFFLINE) {
  89             initDeviceState();
  90
  91         } else if (bridgeStatusInfo.getStatus() == ThingStatus.OFFLINE) {
  92             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.BRIDGE_OFFLINE);
  93             thingOfflineNotify();
  94         }
  95     }
  96
  97     protected void sendCommands(List<CommandExecutionSpecification> commands) {
  98         @Nullable
  99         LuxomBridgeHandler bridgeHandler = getBridgeHandler();
 100
 101         if (bridgeHandler == null) {
 102             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.HANDLER_MISSING_ERROR,
 103                     "@text/status.bridge-handler-missing");
 104             thingOfflineNotify();
 105         } else {
 106             bridgeHandler.sendCommands(commands);
 107         }
 108     }
 109
 110     /**
 111      * example : *P,0,1,21;
 112      */
 113     protected void ping() {
 114         sendCommands(List.of(new CommandExecutionSpecification(LuxomAction.PING.getCommand() + ",0," + getAddress())));
 115     }
 116
 117     /**
 118      * example : *S,0,1,21;
 119      */
 120     protected void set() {
 121         sendCommands(List.of(new CommandExecutionSpecification(LuxomAction.SET.getCommand() + ",0," + getAddress())));
 122     }
 123
 124     /**
 125      * example : *C,0,1,21;
 126      */
 127     protected void clear() {
 128         sendCommands(List.of(new CommandExecutionSpecification(LuxomAction.CLEAR.getCommand() + ",0," + getAddress())));
 129     }
 130 }