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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.io.homekit.internal.accessories;
  14
  15 import static org.openhab.io.homekit.internal.HomekitCharacteristicType.LIGHT_LEVEL;
  16
  17 import java.util.List;
  18 import java.util.concurrent.CompletableFuture;
  19
  20 import org.eclipse.jdt.annotation.Nullable;
  21 import org.openhab.core.library.types.DecimalType;
  22 import org.openhab.io.homekit.internal.HomekitAccessoryUpdater;
  23 import org.openhab.io.homekit.internal.HomekitSettings;
  24 import org.openhab.io.homekit.internal.HomekitTaggedItem;
  25
  26 import io.github.hapjava.accessories.LightSensorAccessory;
  27 import io.github.hapjava.characteristics.HomekitCharacteristicChangeCallback;
  28 import io.github.hapjava.services.impl.LightSensorService;
  29
  30 /**
  31  * HomeKit light sensor implementation.
  32  *
  33  * @author Eugen Freiter - Initial contribution
  34  */
  35 public class HomekitLightSensorImpl extends AbstractHomekitAccessoryImpl implements LightSensorAccessory {
  36
  37     public HomekitLightSensorImpl(HomekitTaggedItem taggedItem, List<HomekitTaggedItem> mandatoryCharacteristics,
  38             HomekitAccessoryUpdater updater, HomekitSettings settings) {
  39         super(taggedItem, mandatoryCharacteristics, updater, settings);
  40         getServices().add(new LightSensorService(this));
  41     }
  42
  43     @Override
  44     public CompletableFuture<Double> getCurrentAmbientLightLevel() {
  45         final @Nullable DecimalType state = getStateAs(LIGHT_LEVEL, DecimalType.class);
  46         return CompletableFuture.completedFuture(state != null ? state.doubleValue() : 0.0);
  47     }
  48
  49     @Override
  50     public void subscribeCurrentAmbientLightLevel(HomekitCharacteristicChangeCallback callback) {
  51         subscribe(LIGHT_LEVEL, callback);
  52     }
  53
  54     @Override
  55     public void unsubscribeCurrentAmbientLightLevel() {
  56         unsubscribe(LIGHT_LEVEL);
  57     }
  58 }