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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.ecotouch.internal;
  14
  15 import static org.openhab.core.library.unit.SIUnits.*;
  16 import static org.openhab.core.library.unit.Units.*;
  17
  18 import java.io.IOException;
  19 import java.math.BigDecimal;
  20 import java.math.RoundingMode;
  21 import java.util.*;
  22 import java.util.concurrent.ScheduledFuture;
  23 import java.util.concurrent.TimeUnit;
  24
  25 import org.eclipse.jdt.annotation.NonNullByDefault;
  26 import org.eclipse.jdt.annotation.Nullable;
  27 import org.openhab.core.library.types.DecimalType;
  28 import org.openhab.core.library.types.QuantityType;
  29 import org.openhab.core.thing.ChannelUID;
  30 import org.openhab.core.thing.Thing;
  31 import org.openhab.core.thing.ThingStatus;
  32 import org.openhab.core.thing.ThingStatusDetail;
  33 import org.openhab.core.thing.binding.BaseThingHandler;
  34 import org.openhab.core.types.Command;
  35 import org.openhab.core.types.RefreshType;
  36 import org.openhab.core.types.State;
  37 import org.slf4j.Logger;
  38 import org.slf4j.LoggerFactory;
  39
  40 /**
  41  * The {@link EcoTouchHandler} is responsible for handling commands, which are
  42  * sent to one of the channels.
  43  *
  44  * @author Sebastian Held - Initial contribution
  45  */
  46 @NonNullByDefault
  47 public class EcoTouchHandler extends BaseThingHandler {
  48
  49     private @Nullable EcoTouchConnector connector = null;
  50
  51     private final Logger logger = LoggerFactory.getLogger(EcoTouchHandler.class);
  52
  53     private @Nullable EcoTouchConfiguration config = null;
  54
  55     private @Nullable ScheduledFuture<?> refreshJob = null;
  56
  57     public EcoTouchHandler(Thing thing) {
  58         super(thing);
  59     }
  60
  61     private void updateChannel(String tag, String value_str) {
  62         try {
  63             List<EcoTouchTags> ecoTouchTags = EcoTouchTags.fromTag(tag);
  64             for (EcoTouchTags ecoTouchTag : ecoTouchTags) {
  65                 String channel = ecoTouchTag.getCommand();
  66                 BigDecimal value = ecoTouchTag.decodeValue(value_str);
  67                 if (ecoTouchTag == EcoTouchTags.TYPE_ADAPT_HEATING) {
  68                     // this type needs special treatment
  69                     // the following reads: value = value / 2 - 2
  70                     value = value.divide(new BigDecimal(2), 1, RoundingMode.UNNECESSARY).subtract(new BigDecimal(2));
  71                     QuantityType<?> quantity = new QuantityType<javax.measure.quantity.Temperature>(value, CELSIUS);
  72                     updateState(channel, quantity);
  73                 } else {
  74                     if (ecoTouchTag.getUnit() != ONE) {
  75                         // this is a quantity type
  76                         QuantityType<?> quantity = new QuantityType<>(value, ecoTouchTag.getUnit());
  77                         updateState(channel, quantity);
  78                     } else {
  79                         DecimalType number = new DecimalType(value);
  80                         updateState(channel, number);
  81                     }
  82                 }
  83             }
  84         } catch (Exception e) {
  85         }
  86     }
  87
  88     @Override
  89     public void handleCommand(ChannelUID channelUID, Command command) {
  90         var localConnector = connector;
  91         if (localConnector == null) {
  92             // the binding was not initialized, yet
  93             return;
  94         }
  95         if (command instanceof RefreshType) {
  96             // request a refresh of a channel
  97             try {
  98                 EcoTouchTags tag = EcoTouchTags.fromString(channelUID.getId());
  99                 if (tag != null) {
 100                     String valueStr = localConnector.getValue(tag.getTagName());
 101                     updateChannel(tag.getTagName(), valueStr);
 102                     updateStatus(ThingStatus.ONLINE);
 103                 }
 104             } catch (Exception e) {
 105             }
 106         } else {
 107             // send command to heat pump
 108             try {
 109                 EcoTouchTags ecoTouchTag = EcoTouchTags.fromString(channelUID.getId());
 110                 if (ecoTouchTag == EcoTouchTags.TYPE_ADAPT_HEATING) {
 111                     // this type needs special treatment
 112                     QuantityType<?> value = (QuantityType<?>) command;
 113                     int raw = Math.round(value.floatValue() * 2 + 4);
 114                     localConnector.setValue(ecoTouchTag.getTagName(), raw);
 115                 } else {
 116                     if (ecoTouchTag.getUnit() != ONE) {
 117                         if (command instanceof QuantityType) {
 118                             // convert from user unit to heat pump unit
 119                             QuantityType<?> value = (QuantityType<?>) command;
 120                             QuantityType<?> rawUnit = value.toUnit(ecoTouchTag.getUnit());
 121                             if (rawUnit != null) {
 122                                 int raw = rawUnit.intValue();
 123                                 raw *= ecoTouchTag.getDivisor();
 124                                 localConnector.setValue(ecoTouchTag.getTagName(), raw);
 125                             }
 126                         } else {
 127                             logger.debug("handleCommand: requires a QuantityType");
 128                         }
 129                     } else {
 130                         State state = (State) command;
 131                         DecimalType decimalType = state.as(DecimalType.class);
 132                         if (decimalType != null) {
 133                             BigDecimal decimal = decimalType.toBigDecimal();
 134                             decimal = decimal.multiply(new BigDecimal(ecoTouchTag.getDivisor()));
 135                             int raw = decimal.intValue();
 136                             localConnector.setValue(ecoTouchTag.getTagName(), raw);
 137                         } else {
 138                             logger.debug("cannot convert {} to a DecimalType", state);
 139                         }
 140                     }
 141                 }
 142             } catch (Exception e) {
 143                 logger.debug("handleCommand: {}", e.toString());
 144             }
 145         }
 146     }
 147
 148     @Override
 149     public void initialize() {
 150         config = getConfigAs(EcoTouchConfiguration.class);
 151
 152         var localConfig = config;
 153         if (localConfig == null) {
 154             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.CONFIGURATION_ERROR);
 155             return;
 156         }
 157
 158         connector = new EcoTouchConnector(localConfig.ip, localConfig.username, localConfig.password);
 159
 160         scheduler.execute(() -> {
 161             try {
 162                 // try to get a single value
 163                 var localConnector = connector;
 164                 if (localConnector == null) {
 165                     updateStatus(ThingStatus.OFFLINE);
 166                     return;
 167                 }
 168                 localConnector.getValue("A1");
 169             } catch (IOException io) {
 170                 updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR, io.toString());
 171                 return;
 172             } catch (Exception e) {
 173                 updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.CONFIGURATION_ERROR, e.toString());
 174                 return;
 175             }
 176
 177             updateStatus(ThingStatus.ONLINE);
 178         });
 179
 180         // start refresh handler
 181         startAutomaticRefresh();
 182     }
 183
 184     private void startAutomaticRefresh() {
 185         var localRefreshJob = refreshJob;
 186         if (localRefreshJob == null || localRefreshJob.isCancelled()) {
 187             Runnable runnable = () -> {
 188                 try {
 189                     Set<String> tags = new HashSet<String>();
 190                     for (EcoTouchTags ecoTouchTag : EcoTouchTags.values()) {
 191                         String channel = ecoTouchTag.getCommand();
 192                         boolean linked = isLinked(channel);
 193                         if (linked)
 194                             tags.add(ecoTouchTag.getTagName());
 195                     }
 196                     var localConnector = connector;
 197                     if (localConnector != null) {
 198                         Map<String, String> result = localConnector.getValues(tags);
 199
 200                         Iterator<Map.Entry<String, String>> it = result.entrySet().iterator();
 201                         while (it.hasNext()) {
 202                             Map.Entry<String, String> pair = it.next();
 203                             updateChannel(pair.getKey(), pair.getValue());
 204                         }
 205                     }
 206                 } catch (IOException io) {
 207                     updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR, io.toString());
 208                 } catch (Exception e) {
 209                     updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.CONFIGURATION_ERROR, e.toString());
 210                 } catch (Error e) {
 211                     // during thing creation, the following error is thrown:
 212                     // java.lang.NoSuchMethodError: 'org.openhab.binding.ecotouch.internal.EcoTouchTags[]
 213                     // org.openhab.binding.ecotouch.internal.EcoTouchTags.values()'
 214                     // not sure why... lets ignore it for now
 215                     updateStatus(ThingStatus.OFFLINE);
 216                 }
 217             };
 218
 219             var localConfig = config;
 220             if (localConfig != null)
 221                 refreshJob = scheduler.scheduleWithFixedDelay(runnable, 10, localConfig.refresh, TimeUnit.SECONDS);
 222         }
 223     }
 224
 225     @Override
 226     public void dispose() {
 227         var localRefreshJob = refreshJob;
 228         if (localRefreshJob != null && !localRefreshJob.isCancelled()) {
 229             localRefreshJob.cancel(true);
 230             localRefreshJob = null;
 231         }
 232         var localConnector = connector;
 233         if (localConnector != null)
 234             localConnector.logout();
 235     }
 236 }