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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.miele.internal.handler;
  14
  15 import static org.openhab.binding.miele.internal.MieleBindingConstants.APPLIANCE_ID;
  16 import static org.openhab.binding.miele.internal.MieleBindingConstants.MIELE_DEVICE_CLASS_DISHWASHER;
  17 import static org.openhab.binding.miele.internal.MieleBindingConstants.POWER_CONSUMPTION_CHANNEL_ID;
  18 import static org.openhab.binding.miele.internal.MieleBindingConstants.WATER_CONSUMPTION_CHANNEL_ID;
  19
  20 import java.math.BigDecimal;
  21
  22 import org.openhab.core.library.types.OnOffType;
  23 import org.openhab.core.library.types.QuantityType;
  24 import org.openhab.core.library.unit.Units;
  25 import org.openhab.core.thing.ChannelUID;
  26 import org.openhab.core.thing.Thing;
  27 import org.openhab.core.types.Command;
  28 import org.openhab.core.types.RefreshType;
  29 import org.slf4j.Logger;
  30 import org.slf4j.LoggerFactory;
  31
  32 import com.google.gson.JsonElement;
  33
  34 /**
  35  * The {@link DishWasherHandler} is responsible for handling commands,
  36  * which are sent to one of the channels
  37  *
  38  * @author Karel Goderis - Initial contribution
  39  * @author Kai Kreuzer - fixed handling of REFRESH commands
  40  * @author Martin Lepsy - fixed handling of empty JSON results
  41  * @author Jacob Laursen - Fixed multicast and protocol support (ZigBee/LAN), added power/water consumption channels
  42  */
  43 public class DishWasherHandler extends MieleApplianceHandler<DishwasherChannelSelector>
  44         implements ExtendedDeviceStateListener {
  45
  46     private static final int POWER_CONSUMPTION_BYTE_POSITION = 16;
  47     private static final int WATER_CONSUMPTION_BYTE_POSITION = 18;
  48     private static final int EXTENDED_STATE_MIN_SIZE_BYTES = 19;
  49
  50     private final Logger logger = LoggerFactory.getLogger(DishWasherHandler.class);
  51
  52     public DishWasherHandler(Thing thing) {
  53         super(thing, DishwasherChannelSelector.class, MIELE_DEVICE_CLASS_DISHWASHER);
  54     }
  55
  56     @Override
  57     public void handleCommand(ChannelUID channelUID, Command command) {
  58         super.handleCommand(channelUID, command);
  59
  60         String channelID = channelUID.getId();
  61         String applianceId = (String) getThing().getConfiguration().getProperties().get(APPLIANCE_ID);
  62
  63         DishwasherChannelSelector selector = (DishwasherChannelSelector) getValueSelectorFromChannelID(channelID);
  64         JsonElement result = null;
  65
  66         try {
  67             if (selector != null) {
  68                 switch (selector) {
  69                     case SWITCH: {
  70                         if (command.equals(OnOffType.ON)) {
  71                             result = bridgeHandler.invokeOperation(applianceId, modelID, "start");
  72                         } else if (command.equals(OnOffType.OFF)) {
  73                             result = bridgeHandler.invokeOperation(applianceId, modelID, "stop");
  74                         }
  75                         break;
  76                     }
  77                     default: {
  78                         if (!(command instanceof RefreshType)) {
  79                             logger.debug("{} is a read-only channel that does not accept commands",
  80                                     selector.getChannelID());
  81                         }
  82                     }
  83                 }
  84             }
  85             // process result
  86             if (result != null && isResultProcessable(result)) {
  87                 logger.debug("Result of operation is {}", result.getAsString());
  88             }
  89         } catch (IllegalArgumentException e) {
  90             logger.warn(
  91                     "An error occurred while trying to set the read-only variable associated with channel '{}' to '{}'",
  92                     channelID, command.toString());
  93         }
  94     }
  95
  96     public void onApplianceExtendedStateChanged(byte[] extendedDeviceState) {
  97         if (extendedDeviceState.length < EXTENDED_STATE_MIN_SIZE_BYTES) {
  98             logger.warn("Unexpected size of extended state: {}", extendedDeviceState);
  99             return;
 100         }
 101
 102         BigDecimal kiloWattHoursTenths = BigDecimal
 103                 .valueOf(extendedDeviceState[POWER_CONSUMPTION_BYTE_POSITION] & 0xff);
 104         var kiloWattHours = new QuantityType<>(kiloWattHoursTenths.divide(BigDecimal.valueOf(10)), Units.KILOWATT_HOUR);
 105         updateExtendedState(POWER_CONSUMPTION_CHANNEL_ID, kiloWattHours);
 106
 107         BigDecimal decilitres = BigDecimal.valueOf(extendedDeviceState[WATER_CONSUMPTION_BYTE_POSITION] & 0xff);
 108         var litres = new QuantityType<>(decilitres.divide(BigDecimal.valueOf(10)), Units.LITRE);
 109         updateExtendedState(WATER_CONSUMPTION_CHANNEL_ID, litres);
 110     }
 111 }