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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.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 WashingMachineHandler} 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 WashingMachineHandler extends MieleApplianceHandler<WashingMachineChannelSelector>
  44         implements ExtendedDeviceStateListener {
  45
  46     private static final int POWER_CONSUMPTION_BYTE_POSITION = 51;
  47     private static final int WATER_CONSUMPTION_BYTE_POSITION = 53;
  48     private static final int EXTENDED_STATE_MIN_SIZE_BYTES = 54;
  49
  50     private final Logger logger = LoggerFactory.getLogger(WashingMachineHandler.class);
  51
  52     public WashingMachineHandler(Thing thing) {
  53         super(thing, WashingMachineChannelSelector.class, MIELE_DEVICE_CLASS_WASHING_MACHINE);
  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         WashingMachineChannelSelector selector = (WashingMachineChannelSelector) getValueSelectorFromChannelID(
  64                 channelID);
  65         JsonElement result = null;
  66
  67         try {
  68             if (selector != null) {
  69                 switch (selector) {
  70                     case SWITCH: {
  71                         if (command.equals(OnOffType.ON)) {
  72                             result = bridgeHandler.invokeOperation(applianceId, modelID, "start");
  73                         } else if (command.equals(OnOffType.OFF)) {
  74                             result = bridgeHandler.invokeOperation(applianceId, modelID, "stop");
  75                         }
  76                         break;
  77                     }
  78                     default: {
  79                         if (!(command instanceof RefreshType)) {
  80                             logger.debug("{} is a read-only channel that does not accept commands",
  81                                     selector.getChannelID());
  82                         }
  83                     }
  84                 }
  85             }
  86             // process result
  87             if (result != null && isResultProcessable(result)) {
  88                 logger.debug("Result of operation is {}", result.getAsString());
  89             }
  90         } catch (IllegalArgumentException e) {
  91             logger.warn(
  92                     "An error occurred while trying to set the read-only variable associated with channel '{}' to '{}'",
  93                     channelID, command.toString());
  94         }
  95     }
  96
  97     public void onApplianceExtendedStateChanged(byte[] extendedDeviceState) {
  98         if (extendedDeviceState.length < EXTENDED_STATE_MIN_SIZE_BYTES) {
  99             logger.warn("Unexpected size of extended state: {}", extendedDeviceState);
 100             return;
 101         }
 102
 103         BigDecimal kiloWattHoursTenths = BigDecimal
 104                 .valueOf(extendedDeviceState[POWER_CONSUMPTION_BYTE_POSITION] & 0xff);
 105         var kiloWattHours = new QuantityType<>(kiloWattHoursTenths.divide(BigDecimal.valueOf(10)), Units.KILOWATT_HOUR);
 106         updateExtendedState(POWER_CONSUMPTION_CHANNEL_ID, kiloWattHours);
 107
 108         var litres = new QuantityType<>(BigDecimal.valueOf(extendedDeviceState[WATER_CONSUMPTION_BYTE_POSITION] & 0xff),
 109                 Units.LITRE);
 110         updateExtendedState(WATER_CONSUMPTION_CHANNEL_ID, litres);
 111     }
 112 }