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   1 /**
   2  * Copyright (c) 2010-2021 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.digiplex.internal.discovery;
  14
  15 import static org.openhab.binding.digiplex.internal.DigiplexBindingConstants.*;
  16
  17 import java.util.Collections;
  18 import java.util.HashMap;
  19 import java.util.Map;
  20
  21 import org.eclipse.jdt.annotation.NonNullByDefault;
  22 import org.eclipse.jdt.annotation.Nullable;
  23 import org.openhab.binding.digiplex.internal.communication.AreaLabelRequest;
  24 import org.openhab.binding.digiplex.internal.communication.AreaLabelResponse;
  25 import org.openhab.binding.digiplex.internal.communication.DigiplexMessageHandler;
  26 import org.openhab.binding.digiplex.internal.communication.DigiplexRequest;
  27 import org.openhab.binding.digiplex.internal.communication.ZoneLabelRequest;
  28 import org.openhab.binding.digiplex.internal.communication.ZoneLabelResponse;
  29 import org.openhab.binding.digiplex.internal.handler.DigiplexBridgeHandler;
  30 import org.openhab.core.config.discovery.AbstractDiscoveryService;
  31 import org.openhab.core.config.discovery.DiscoveryResult;
  32 import org.openhab.core.config.discovery.DiscoveryResultBuilder;
  33 import org.openhab.core.config.discovery.DiscoveryService;
  34 import org.openhab.core.thing.ThingUID;
  35 import org.openhab.core.thing.binding.ThingHandler;
  36 import org.openhab.core.thing.binding.ThingHandlerService;
  37
  38 /**
  39  * Service for discovering things on Digiplex alarm systems
  40  *
  41  * @author Robert Michalak - Initial contribution
  42  *
  43  */
  44 @NonNullByDefault
  45 public class DigiplexDiscoveryService extends AbstractDiscoveryService
  46         implements DiscoveryService, ThingHandlerService, DigiplexMessageHandler {
  47
  48     private static final int MAX_ZONE = 96;
  49     private static final int MAX_AREA = 8;
  50
  51     private static final int DISCOVERY_TIMEOUT = 30;
  52
  53     private @Nullable DigiplexBridgeHandler bridgeHandler;
  54
  55     public DigiplexDiscoveryService() {
  56         super(Collections.singleton(THING_TYPE_ZONE), DISCOVERY_TIMEOUT, false);
  57     }
  58
  59     @Override
  60     @SuppressWarnings("null")
  61     protected void startScan() {
  62         bridgeHandler.registerMessageHandler(this);
  63         // find zones
  64         for (int i = 1; i <= MAX_ZONE; i++) {
  65             DigiplexRequest command = new ZoneLabelRequest(i);
  66             bridgeHandler.sendRequest(command);
  67         }
  68         // find areas
  69         for (int i = 1; i <= MAX_AREA; i++) {
  70             DigiplexRequest command = new AreaLabelRequest(i);
  71             bridgeHandler.sendRequest(command);
  72         }
  73     }
  74
  75     @Override
  76     @SuppressWarnings("null")
  77     protected synchronized void stopScan() {
  78         bridgeHandler.unregisterMessageHandler(this);
  79         super.stopScan();
  80     }
  81
  82     @Override
  83     @SuppressWarnings("null")
  84     public void handleZoneLabelResponse(ZoneLabelResponse response) {
  85         // we have no other option to check whether zone is actually enabled than to compare its name with the default
  86         if (isDefaultName(response)) {
  87             return;
  88         }
  89
  90         ThingUID bridgeUID = bridgeHandler.getThing().getUID();
  91         ThingUID thingUID = new ThingUID(THING_TYPE_ZONE, bridgeUID, String.format("zone%d", response.zoneNo));
  92
  93         Map<String, Object> properties = new HashMap<>(1);
  94         properties.put(PROPERTY_ZONE_NO, Integer.toString(response.zoneNo));
  95
  96         DiscoveryResult discoveryResult = DiscoveryResultBuilder.create(thingUID).withBridge(bridgeUID)
  97                 .withProperties(properties).withLabel(response.zoneName).build();
  98
  99         thingDiscovered(discoveryResult);
 100     }
 101
 102     private boolean isDefaultName(ZoneLabelResponse response) {
 103         return ZONE_DEFAULT_NAMES.stream().anyMatch(format -> {
 104             if (String.format(format, response.zoneNo).equals(response.zoneName)) {
 105                 return true;
 106             } else {
 107                 return false;
 108             }
 109         });
 110     }
 111
 112     @Override
 113     @SuppressWarnings("null")
 114     public void handleAreaLabelResponse(AreaLabelResponse response) {
 115         // we have no other option to check whether area is actually enabled than to compare its name with the default
 116         if (response.success && response.areaName.equals(String.format(AREA_DEFAULT_NAME, response.areaNo))) {
 117             return;
 118         }
 119
 120         ThingUID bridgeUID = bridgeHandler.getThing().getUID();
 121         ThingUID thingUID = new ThingUID(THING_TYPE_AREA, bridgeUID, String.format("area%d", response.areaNo));
 122
 123         Map<String, Object> properties = new HashMap<>(1);
 124         properties.put(PROPERTY_AREA_NO, Integer.toString(response.areaNo));
 125
 126         DiscoveryResult discoveryResult = DiscoveryResultBuilder.create(thingUID).withBridge(bridgeUID)
 127                 .withProperties(properties).withLabel(response.areaName).build();
 128
 129         thingDiscovered(discoveryResult);
 130     }
 131
 132     @Override
 133     public void setThingHandler(@Nullable ThingHandler handler) {
 134         if (handler instanceof DigiplexBridgeHandler) {
 135             bridgeHandler = (DigiplexBridgeHandler) handler;
 136             bridgeHandler.registerMessageHandler(this);
 137         }
 138     }
 139
 140     @Override
 141     public @Nullable ThingHandler getThingHandler() {
 142         return bridgeHandler;
 143     }
 144
 145     @Override
 146     public void activate() {
 147         super.activate(null);
 148     }
 149
 150     @Override
 151     public void deactivate() {
 152         super.deactivate();
 153     }
 154 }