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   1 /**
   2  * Copyright (c) 2010-2020 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
  17 import org.openhab.core.library.types.OnOffType;
  18 import org.openhab.core.thing.ChannelUID;
  19 import org.openhab.core.thing.Thing;
  20 import org.openhab.core.types.Command;
  21 import org.openhab.core.types.RefreshType;
  22 import org.slf4j.Logger;
  23 import org.slf4j.LoggerFactory;
  24
  25 import com.google.gson.JsonElement;
  26
  27 /**
  28  * The {@link CoffeeMachineHandler} is responsible for handling commands,
  29  * which are sent to one of the channels
  30  *
  31  * @author Stephan Esch - Initial contribution
  32  * @author Martin Lepsy - fixed handling of empty JSON results
  33  */
  34 public class CoffeeMachineHandler extends MieleApplianceHandler<CoffeeMachineChannelSelector> {
  35
  36     private final Logger logger = LoggerFactory.getLogger(CoffeeMachineHandler.class);
  37
  38     public CoffeeMachineHandler(Thing thing) {
  39         super(thing, CoffeeMachineChannelSelector.class, "CoffeeSystem");
  40     }
  41
  42     @Override
  43     public void handleCommand(ChannelUID channelUID, Command command) {
  44         super.handleCommand(channelUID, command);
  45
  46         String channelID = channelUID.getId();
  47         String uid = (String) getThing().getConfiguration().getProperties().get(APPLIANCE_ID);
  48
  49         CoffeeMachineChannelSelector selector = (CoffeeMachineChannelSelector) getValueSelectorFromChannelID(channelID);
  50         JsonElement result = null;
  51
  52         try {
  53             if (selector != null) {
  54                 switch (selector) {
  55                     case SWITCH: {
  56                         if (command.equals(OnOffType.ON)) {
  57                             result = bridgeHandler.invokeOperation(uid, modelID, "switchOn");
  58                         } else if (command.equals(OnOffType.OFF)) {
  59                             result = bridgeHandler.invokeOperation(uid, modelID, "switchOff");
  60                         }
  61                         break;
  62                     }
  63                     default: {
  64                         if (!(command instanceof RefreshType)) {
  65                             logger.debug("{} is a read-only channel that does not accept commands",
  66                                     selector.getChannelID());
  67                         }
  68                     }
  69                 }
  70             }
  71             // process result
  72             if (isResultProcessable(result)) {
  73                 logger.debug("Result of operation is {}", result.getAsString());
  74             }
  75         } catch (IllegalArgumentException e) {
  76             logger.warn(
  77                     "An error occurred while trying to set the read-only variable associated with channel '{}' to '{}'",
  78                     channelID, command.toString());
  79         }
  80     }
  81 }