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   1 /**
   2  * Copyright (c) 2010-2023 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.luftdateninfo.internal.handler;
  14
  15 import static org.openhab.binding.luftdateninfo.internal.LuftdatenInfoBindingConstants.*;
  16 import static org.openhab.binding.luftdateninfo.internal.utils.Constants.*;
  17
  18 import java.util.List;
  19
  20 import org.eclipse.jdt.annotation.NonNullByDefault;
  21 import org.eclipse.jdt.annotation.Nullable;
  22 import org.openhab.binding.luftdateninfo.internal.dto.SensorDataValue;
  23 import org.openhab.binding.luftdateninfo.internal.utils.NumberUtils;
  24 import org.openhab.core.library.dimension.Density;
  25 import org.openhab.core.library.types.QuantityType;
  26 import org.openhab.core.library.unit.Units;
  27 import org.openhab.core.thing.Thing;
  28
  29 /**
  30  * The {@link PMHandler} is responsible for handling commands, which are
  31  * sent to one of the channels.
  32  *
  33  * @author Bernd Weymann - Initial contribution
  34  */
  35 @NonNullByDefault
  36 public class PMHandler extends BaseSensorHandler {
  37
  38     protected QuantityType<Density> pm25Cache = QuantityType.valueOf(-1, Units.MICROGRAM_PER_CUBICMETRE);
  39     protected QuantityType<Density> pm100Cache = QuantityType.valueOf(-1, Units.MICROGRAM_PER_CUBICMETRE);
  40
  41     public PMHandler(Thing thing) {
  42         super(thing);
  43     }
  44
  45     @Override
  46     public UpdateStatus updateChannels(@Nullable String json) {
  47         if (json != null) {
  48             List<SensorDataValue> valueList = HTTPHandler.getHandler().getLatestValues(json);
  49             if (valueList != null) {
  50                 if (HTTPHandler.getHandler().isParticulate(valueList)) {
  51                     valueList.forEach(v -> {
  52                         if (v.getValueType().endsWith(P1)) {
  53                             pm100Cache = QuantityType.valueOf(NumberUtils.round(v.getValue(), 1),
  54                                     Units.MICROGRAM_PER_CUBICMETRE);
  55                             updateState(PM100_CHANNEL, pm100Cache);
  56                         } else if (v.getValueType().endsWith(P2)) {
  57                             pm25Cache = QuantityType.valueOf(NumberUtils.round(v.getValue(), 1),
  58                                     Units.MICROGRAM_PER_CUBICMETRE);
  59                             updateState(PM25_CHANNEL, pm25Cache);
  60                         }
  61                     });
  62                     return UpdateStatus.OK;
  63                 } else {
  64                     return UpdateStatus.VALUE_ERROR;
  65                 }
  66             } else {
  67                 return UpdateStatus.VALUE_EMPTY;
  68             }
  69         } else {
  70             return UpdateStatus.CONNECTION_ERROR;
  71         }
  72     }
  73
  74     @Override
  75     protected void updateFromCache() {
  76         updateState(PM25_CHANNEL, pm25Cache);
  77         updateState(PM100_CHANNEL, pm100Cache);
  78     }
  79 }