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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.io.homekit.internal.accessories;
  14
  15 import static org.openhab.io.homekit.internal.HomekitCharacteristicType.CURRENT_POSITION;
  16 import static org.openhab.io.homekit.internal.HomekitCharacteristicType.POSITION_STATE;
  17 import static org.openhab.io.homekit.internal.HomekitCharacteristicType.TARGET_POSITION;
  18
  19 import java.util.List;
  20 import java.util.Map;
  21 import java.util.Optional;
  22 import java.util.concurrent.CompletableFuture;
  23
  24 import org.eclipse.jdt.annotation.NonNullByDefault;
  25 import org.eclipse.jdt.annotation.Nullable;
  26 import org.openhab.core.items.GroupItem;
  27 import org.openhab.core.items.Item;
  28 import org.openhab.core.library.items.DimmerItem;
  29 import org.openhab.core.library.items.NumberItem;
  30 import org.openhab.core.library.items.RollershutterItem;
  31 import org.openhab.core.library.types.DecimalType;
  32 import org.openhab.core.library.types.PercentType;
  33 import org.openhab.core.library.types.StopMoveType;
  34 import org.openhab.core.library.types.UpDownType;
  35 import org.openhab.io.homekit.internal.HomekitAccessoryUpdater;
  36 import org.openhab.io.homekit.internal.HomekitCharacteristicType;
  37 import org.openhab.io.homekit.internal.HomekitSettings;
  38 import org.openhab.io.homekit.internal.HomekitTaggedItem;
  39 import org.slf4j.Logger;
  40 import org.slf4j.LoggerFactory;
  41
  42 import io.github.hapjava.characteristics.HomekitCharacteristicChangeCallback;
  43 import io.github.hapjava.characteristics.impl.windowcovering.PositionStateEnum;
  44
  45 /**
  46  * Common methods for Door, Window and WindowCovering.
  47  *
  48  * @author Eugen Freiter - Initial contribution
  49  */
  50 @NonNullByDefault
  51 abstract class AbstractHomekitPositionAccessoryImpl extends AbstractHomekitAccessoryImpl {
  52     private final Logger logger = LoggerFactory.getLogger(AbstractHomekitPositionAccessoryImpl.class);
  53     protected int closedPosition;
  54     protected int openPosition;
  55     private final Map<PositionStateEnum, String> positionStateMapping;
  56     protected boolean emulateState;
  57     protected boolean emulateStopSameDirection;
  58     protected PositionStateEnum emulatedState = PositionStateEnum.STOPPED;
  59
  60     public AbstractHomekitPositionAccessoryImpl(HomekitTaggedItem taggedItem,
  61             List<HomekitTaggedItem> mandatoryCharacteristics, HomekitAccessoryUpdater updater,
  62             HomekitSettings settings) {
  63         super(taggedItem, mandatoryCharacteristics, updater, settings);
  64         final boolean inverted = getAccessoryConfigurationAsBoolean(HomekitTaggedItem.INVERTED, true);
  65         emulateState = getAccessoryConfigurationAsBoolean(HomekitTaggedItem.EMULATE_STOP_STATE, false);
  66         emulateStopSameDirection = getAccessoryConfigurationAsBoolean(HomekitTaggedItem.EMULATE_STOP_SAME_DIRECTION,
  67                 false);
  68         closedPosition = inverted ? 0 : 100;
  69         openPosition = inverted ? 100 : 0;
  70         positionStateMapping = createMapping(POSITION_STATE, PositionStateEnum.class);
  71     }
  72
  73     public CompletableFuture<Integer> getCurrentPosition() {
  74         return CompletableFuture.completedFuture(convertPositionState(CURRENT_POSITION, openPosition, closedPosition));
  75     }
  76
  77     public CompletableFuture<PositionStateEnum> getPositionState() {
  78         return CompletableFuture.completedFuture(emulateState ? emulatedState
  79                 : getKeyFromMapping(POSITION_STATE, positionStateMapping, PositionStateEnum.STOPPED));
  80     }
  81
  82     public CompletableFuture<Integer> getTargetPosition() {
  83         return CompletableFuture.completedFuture(convertPositionState(TARGET_POSITION, openPosition, closedPosition));
  84     }
  85
  86     public CompletableFuture<Void> setTargetPosition(int value) {
  87         getCharacteristic(TARGET_POSITION).ifPresentOrElse(taggedItem -> {
  88             final Item item = taggedItem.getItem();
  89             final int targetPosition = convertPosition(value, openPosition);
  90             if (item instanceof RollershutterItem) {
  91                 // HomeKit home app never sends STOP. we emulate stop if we receive 100% or 0% while the blind is moving
  92                 if (emulateState && (targetPosition == 100 && emulatedState == PositionStateEnum.DECREASING)
  93                         || ((targetPosition == 0 && emulatedState == PositionStateEnum.INCREASING))) {
  94                     if (emulateStopSameDirection) {
  95                         // some blinds devices do not support "STOP" but would stop if receive UP/DOWN while moving
  96                         ((RollershutterItem) item)
  97                                 .send(emulatedState == PositionStateEnum.INCREASING ? UpDownType.UP : UpDownType.DOWN);
  98                     } else {
  99                         ((RollershutterItem) item).send(StopMoveType.STOP);
 100                     }
 101                     emulatedState = PositionStateEnum.STOPPED;
 102                 } else {
 103                     ((RollershutterItem) item).send(new PercentType(targetPosition));
 104                     if (emulateState) {
 105                         @Nullable
 106                         PercentType currentPosition = item.getStateAs(PercentType.class);
 107                         emulatedState = currentPosition == null || currentPosition.intValue() == targetPosition
 108                                 ? PositionStateEnum.STOPPED
 109                                 : currentPosition.intValue() < targetPosition ? PositionStateEnum.INCREASING
 110                                         : PositionStateEnum.DECREASING;
 111                     }
 112                 }
 113             } else if (item instanceof DimmerItem) {
 114                 ((DimmerItem) item).send(new PercentType(targetPosition));
 115             } else if (item instanceof NumberItem) {
 116                 ((NumberItem) item).send(new DecimalType(targetPosition));
 117             } else if (item instanceof GroupItem && ((GroupItem) item).getBaseItem() instanceof RollershutterItem) {
 118                 ((GroupItem) item).send(new PercentType(targetPosition));
 119             } else if (item instanceof GroupItem && ((GroupItem) item).getBaseItem() instanceof DimmerItem) {
 120                 ((GroupItem) item).send(new PercentType(targetPosition));
 121             } else if (item instanceof GroupItem && ((GroupItem) item).getBaseItem() instanceof NumberItem) {
 122                 ((GroupItem) item).send(new DecimalType(targetPosition));
 123             } else {
 124                 logger.warn(
 125                         "Unsupported item type for characteristic {} at accessory {}. Expected Rollershutter, Dimmer or Number item, got {}",
 126                         TARGET_POSITION, getName(), item.getClass());
 127             }
 128         }, () -> {
 129             logger.warn("Mandatory characteristic {} not found at accessory {}. ", TARGET_POSITION, getName());
 130         });
 131         return CompletableFuture.completedFuture(null);
 132     }
 133
 134     public void subscribeCurrentPosition(HomekitCharacteristicChangeCallback callback) {
 135         subscribe(CURRENT_POSITION, callback);
 136     }
 137
 138     public void subscribePositionState(HomekitCharacteristicChangeCallback callback) {
 139         subscribe(POSITION_STATE, callback);
 140     }
 141
 142     public void subscribeTargetPosition(HomekitCharacteristicChangeCallback callback) {
 143         subscribe(TARGET_POSITION, callback);
 144     }
 145
 146     public void unsubscribeCurrentPosition() {
 147         unsubscribe(CURRENT_POSITION);
 148     }
 149
 150     public void unsubscribePositionState() {
 151         unsubscribe(POSITION_STATE);
 152     }
 153
 154     public void unsubscribeTargetPosition() {
 155         unsubscribe(TARGET_POSITION);
 156     }
 157
 158     /**
 159      * convert/invert position of door/window/blinds.
 160      * openHAB Rollershutter is:
 161      * - completely open if position is 0%,
 162      * - completely closed if position is 100%.
 163      * HomeKit mapping has inverted mapping
 164      * From Specification: "For blinds/shades/awnings, a value of 0 indicates a position that permits the least light
 165      * and a value
 166      * of 100 indicates a position that allows most light.", i.e.
 167      * HomeKit Blinds is
 168      * - completely open if position is 100%,
 169      * - completely closed if position is 0%.
 170      *
 171      * As openHAB rollershutter item is typically used for window covering, the binding has by default inverting
 172      * mapping.
 173      * One can override this default behaviour with inverted="false/no" flag. in this cases, openHAB item value will be
 174      * sent to HomeKit with no changes.
 175      *
 176      * @param value source value
 177      * @return target value
 178      */
 179     protected int convertPosition(int value, int openPosition) {
 180         return Math.abs(openPosition - value);
 181     }
 182
 183     protected int convertPositionState(HomekitCharacteristicType type, int openPosition, int closedPosition) {
 184         @Nullable
 185         DecimalType value = null;
 186         final Optional<HomekitTaggedItem> taggedItem = getCharacteristic(type);
 187         if (taggedItem.isPresent()) {
 188             final Item item = taggedItem.get().getItem();
 189             final Item baseItem = taggedItem.get().getBaseItem();
 190             if (baseItem instanceof RollershutterItem || baseItem instanceof DimmerItem) {
 191                 value = item.getStateAs(PercentType.class);
 192             } else {
 193                 value = item.getStateAs(DecimalType.class);
 194             }
 195         }
 196         return value != null ? convertPosition(value.intValue(), openPosition) : closedPosition;
 197     }
 198 }