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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_WASHING_MACHINE;
  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.i18n.LocaleProvider;
  23 import org.openhab.core.i18n.TranslationProvider;
  24 import org.openhab.core.library.types.OnOffType;
  25 import org.openhab.core.library.types.QuantityType;
  26 import org.openhab.core.library.unit.Units;
  27 import org.openhab.core.thing.ChannelUID;
  28 import org.openhab.core.thing.Thing;
  29 import org.openhab.core.types.Command;
  30 import org.openhab.core.types.RefreshType;
  31 import org.slf4j.Logger;
  32 import org.slf4j.LoggerFactory;
  33
  34 import com.google.gson.JsonElement;
  35
  36 /**
  37  * The {@link WashingMachineHandler} is responsible for handling commands,
  38  * which are sent to one of the channels
  39  *
  40  * @author Karel Goderis - Initial contribution
  41  * @author Kai Kreuzer - fixed handling of REFRESH commands
  42  * @author Martin Lepsy - fixed handling of empty JSON results
  43  * @author Jacob Laursen - Fixed multicast and protocol support (ZigBee/LAN), added power/water consumption channels
  44  **/
  45 public class WashingMachineHandler extends MieleApplianceHandler<WashingMachineChannelSelector>
  46         implements ExtendedDeviceStateListener {
  47
  48     private static final int POWER_CONSUMPTION_BYTE_POSITION = 51;
  49     private static final int WATER_CONSUMPTION_BYTE_POSITION = 53;
  50     private static final int EXTENDED_STATE_MIN_SIZE_BYTES = 54;
  51
  52     private final Logger logger = LoggerFactory.getLogger(WashingMachineHandler.class);
  53
  54     public WashingMachineHandler(Thing thing, TranslationProvider i18nProvider, LocaleProvider localeProvider) {
  55         super(thing, i18nProvider, localeProvider, WashingMachineChannelSelector.class,
  56                 MIELE_DEVICE_CLASS_WASHING_MACHINE);
  57     }
  58
  59     @Override
  60     public void handleCommand(ChannelUID channelUID, Command command) {
  61         super.handleCommand(channelUID, command);
  62
  63         String channelID = channelUID.getId();
  64         String applianceId = (String) getThing().getConfiguration().getProperties().get(APPLIANCE_ID);
  65
  66         WashingMachineChannelSelector selector = (WashingMachineChannelSelector) getValueSelectorFromChannelID(
  67                 channelID);
  68         JsonElement result = null;
  69
  70         try {
  71             if (selector != null) {
  72                 switch (selector) {
  73                     case SWITCH: {
  74                         if (command.equals(OnOffType.ON)) {
  75                             result = bridgeHandler.invokeOperation(applianceId, modelID, "start");
  76                         } else if (command.equals(OnOffType.OFF)) {
  77                             result = bridgeHandler.invokeOperation(applianceId, modelID, "stop");
  78                         }
  79                         break;
  80                     }
  81                     default: {
  82                         if (!(command instanceof RefreshType)) {
  83                             logger.debug("{} is a read-only channel that does not accept commands",
  84                                     selector.getChannelID());
  85                         }
  86                     }
  87                 }
  88             }
  89             // process result
  90             if (result != null && isResultProcessable(result)) {
  91                 logger.debug("Result of operation is {}", result.getAsString());
  92             }
  93         } catch (IllegalArgumentException e) {
  94             logger.warn(
  95                     "An error occurred while trying to set the read-only variable associated with channel '{}' to '{}'",
  96                     channelID, command.toString());
  97         }
  98     }
  99
 100     public void onApplianceExtendedStateChanged(byte[] extendedDeviceState) {
 101         if (extendedDeviceState.length < EXTENDED_STATE_MIN_SIZE_BYTES) {
 102             logger.warn("Unexpected size of extended state: {}", extendedDeviceState);
 103             return;
 104         }
 105
 106         BigDecimal kiloWattHoursTenths = BigDecimal
 107                 .valueOf(extendedDeviceState[POWER_CONSUMPTION_BYTE_POSITION] & 0xff);
 108         var kiloWattHours = new QuantityType<>(kiloWattHoursTenths.divide(BigDecimal.valueOf(10)), Units.KILOWATT_HOUR);
 109         updateExtendedState(POWER_CONSUMPTION_CHANNEL_ID, kiloWattHours);
 110
 111         var litres = new QuantityType<>(BigDecimal.valueOf(extendedDeviceState[WATER_CONSUMPTION_BYTE_POSITION] & 0xff),
 112                 Units.LITRE);
 113         updateExtendedState(WATER_CONSUMPTION_CHANNEL_ID, litres);
 114     }
 115 }