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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.dali.internal.handler;
  14
  15 import static org.openhab.binding.dali.internal.DaliBindingConstants.*;
  16
  17 import java.math.BigDecimal;
  18
  19 import org.eclipse.jdt.annotation.NonNullByDefault;
  20 import org.eclipse.jdt.annotation.Nullable;
  21 import org.openhab.binding.dali.internal.protocol.DaliAddress;
  22 import org.openhab.binding.dali.internal.protocol.DaliDAPCCommand;
  23 import org.openhab.binding.dali.internal.protocol.DaliResponse;
  24 import org.openhab.binding.dali.internal.protocol.DaliStandardCommand;
  25 import org.openhab.core.config.core.Configuration;
  26 import org.openhab.core.library.types.IncreaseDecreaseType;
  27 import org.openhab.core.library.types.OnOffType;
  28 import org.openhab.core.library.types.PercentType;
  29 import org.openhab.core.thing.Bridge;
  30 import org.openhab.core.thing.ChannelUID;
  31 import org.openhab.core.thing.Thing;
  32 import org.openhab.core.thing.ThingStatus;
  33 import org.openhab.core.thing.ThingStatusDetail;
  34 import org.openhab.core.thing.binding.BaseThingHandler;
  35 import org.openhab.core.thing.binding.BridgeHandler;
  36 import org.openhab.core.types.Command;
  37 import org.openhab.core.types.RefreshType;
  38 import org.slf4j.Logger;
  39 import org.slf4j.LoggerFactory;
  40
  41 /**
  42  * The {@link DaliDeviceHandler} handles commands for things of type Device and Group.
  43  *
  44  * @author Robert Schmid - Initial contribution
  45  */
  46 @NonNullByDefault
  47 public class DaliDeviceHandler extends BaseThingHandler {
  48     private final Logger logger = LoggerFactory.getLogger(DaliDeviceHandler.class);
  49     protected @Nullable Integer targetId;
  50     protected @Nullable Integer readDeviceTargetId;
  51
  52     public DaliDeviceHandler(Thing thing) {
  53         super(thing);
  54     }
  55
  56     @Override
  57     public void initialize() {
  58         Bridge bridge = getBridge();
  59
  60         if (bridge == null) {
  61             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.CONFIGURATION_ERROR, "No bridge configured");
  62         } else {
  63             updateStatus(ThingStatus.ONLINE);
  64         }
  65
  66         final Configuration conf = this.thing.getConfiguration();
  67         targetId = ((BigDecimal) conf.get(TARGET_ID)).intValueExact();
  68         // Reading from group addresses does not work generally, so if a fallback device id is
  69         // defined, use that instead when reading the current state
  70         if (conf.get(READ_DEVICE_TARGET_ID) != null) {
  71             readDeviceTargetId = ((BigDecimal) this.thing.getConfiguration().get(READ_DEVICE_TARGET_ID))
  72                     .intValueExact();
  73         } else {
  74             readDeviceTargetId = null;
  75         }
  76     }
  77
  78     @Override
  79     public void handleCommand(ChannelUID channelUID, Command command) {
  80         try {
  81             if (CHANNEL_DIM_AT_FADE_RATE.equals(channelUID.getId())
  82                     || CHANNEL_DIM_IMMEDIATELY.equals(channelUID.getId())) {
  83                 DaliAddress address;
  84                 if (THING_TYPE_DEVICE.equals(this.thing.getThingTypeUID())
  85                         || THING_TYPE_DEVICE_DT8.equals(this.thing.getThingTypeUID())) {
  86                     address = DaliAddress.createShortAddress(targetId);
  87                 } else if (THING_TYPE_GROUP.equals(this.thing.getThingTypeUID())
  88                         || THING_TYPE_GROUP_DT8.equals(this.thing.getThingTypeUID())) {
  89                     address = DaliAddress.createGroupAddress(targetId);
  90                 } else {
  91                     throw new DaliException("unknown device type");
  92                 }
  93
  94                 boolean queryDeviceState = false;
  95
  96                 if (command instanceof PercentType percentCommand) {
  97                     byte dimmValue = (byte) ((percentCommand.floatValue() * DALI_SWITCH_100_PERCENT) / 100);
  98                     // A dimm value of zero is handled correctly by DALI devices, i.e. they are turned off
  99                     getBridgeHandler().sendCommand(new DaliDAPCCommand(address, dimmValue));
 100                 } else if (command instanceof OnOffType onOffCommand) {
 101                     if (onOffCommand == OnOffType.ON) {
 102                         getBridgeHandler().sendCommand(new DaliDAPCCommand(address, (byte) DALI_SWITCH_100_PERCENT));
 103                     } else {
 104                         getBridgeHandler().sendCommand(DaliStandardCommand.createOffCommand(address));
 105                     }
 106                 } else if (command instanceof IncreaseDecreaseType increaseDecreaseCommand) {
 107                     if (CHANNEL_DIM_AT_FADE_RATE.equals(channelUID.getId())) {
 108                         if (increaseDecreaseCommand == IncreaseDecreaseType.INCREASE) {
 109                             getBridgeHandler().sendCommand(DaliStandardCommand.createUpCommand(address));
 110                         } else {
 111                             getBridgeHandler().sendCommand(DaliStandardCommand.createDownCommand(address));
 112                         }
 113                     } else {
 114                         if (increaseDecreaseCommand == IncreaseDecreaseType.INCREASE) {
 115                             getBridgeHandler().sendCommand(DaliStandardCommand.createStepUpCommand(address));
 116                         } else {
 117                             getBridgeHandler().sendCommand(DaliStandardCommand.createStepDownCommand(address));
 118                         }
 119                     }
 120                     queryDeviceState = true;
 121                 } else if (command instanceof RefreshType) {
 122                     queryDeviceState = true;
 123                 }
 124
 125                 if (queryDeviceState) {
 126                     DaliAddress readAddress = address;
 127                     if (readDeviceTargetId != null) {
 128                         readAddress = DaliAddress.createShortAddress(readDeviceTargetId);
 129                     }
 130                     getBridgeHandler()
 131                             .sendCommandWithResponse(DaliStandardCommand.createQueryActualLevelCommand(readAddress),
 132                                     DaliResponse.NumericMask.class)
 133                             .thenAccept(response -> {
 134                                 if (response != null && !response.mask) {
 135                                     Integer value = response.value != null ? response.value : 0;
 136                                     int percentValue = (int) (value.floatValue() * 100 / DALI_SWITCH_100_PERCENT);
 137                                     updateState(channelUID, new PercentType(percentValue));
 138                                 }
 139                             }).exceptionally(e -> {
 140                                 logger.warn("Error querying device status: {}", e.getMessage());
 141                                 return null;
 142                             });
 143                 }
 144             }
 145         } catch (DaliException e) {
 146             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR, e.getMessage());
 147         }
 148     }
 149
 150     protected DaliserverBridgeHandler getBridgeHandler() throws DaliException {
 151         Bridge bridge = this.getBridge();
 152         if (bridge == null) {
 153             throw new DaliException("No bridge was found");
 154         }
 155
 156         BridgeHandler handler = bridge.getHandler();
 157         if (handler == null) {
 158             throw new DaliException("No handler was found");
 159         }
 160
 161         return (DaliserverBridgeHandler) handler;
 162     }
 163 }