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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.enphase.internal.handler;
  14
  15 import static org.openhab.binding.enphase.internal.EnphaseBindingConstants.*;
  16
  17 import java.time.Instant;
  18 import java.time.ZoneId;
  19 import java.time.ZonedDateTime;
  20
  21 import org.eclipse.jdt.annotation.NonNullByDefault;
  22 import org.eclipse.jdt.annotation.Nullable;
  23 import org.openhab.binding.enphase.internal.MessageTranslator;
  24 import org.openhab.binding.enphase.internal.dto.InverterDTO;
  25 import org.openhab.core.library.types.DateTimeType;
  26 import org.openhab.core.library.types.QuantityType;
  27 import org.openhab.core.library.unit.Units;
  28 import org.openhab.core.thing.ChannelUID;
  29 import org.openhab.core.thing.Thing;
  30 import org.openhab.core.types.Command;
  31 import org.openhab.core.types.RefreshType;
  32 import org.openhab.core.types.State;
  33 import org.openhab.core.types.UnDefType;
  34
  35 /**
  36  * The {@link EnphaseInverterHandler} is responsible for handling commands, which are
  37  * sent to one of the channels.
  38  *
  39  * @author Hilbrand Bouwkamp - Initial contribution
  40  */
  41 @NonNullByDefault
  42 public class EnphaseInverterHandler extends EnphaseDeviceHandler {
  43
  44     private @Nullable InverterDTO lastKnownState;
  45
  46     public EnphaseInverterHandler(final Thing thing, MessageTranslator messageTranslator) {
  47         super(thing, messageTranslator);
  48     }
  49
  50     @Override
  51     public void handleCommand(final ChannelUID channelUID, final Command command) {
  52         if (command instanceof RefreshType) {
  53             final String channelId = channelUID.getId();
  54
  55             switch (channelId) {
  56                 case INVERTER_CHANNEL_LAST_REPORT_WATTS:
  57                     refreshLastReportWatts(lastKnownState);
  58                     break;
  59                 case INVERTER_CHANNEL_MAX_REPORT_WATTS:
  60                     refreshMaxReportWatts(lastKnownState);
  61                     break;
  62                 case INVERTER_CHANNEL_LAST_REPORT_DATE:
  63                     refreshLastReportDate(lastKnownState);
  64                     break;
  65                 default:
  66                     super.handleCommandRefresh(channelId);
  67                     break;
  68             }
  69         }
  70     }
  71
  72     public void refreshInverterChannels(final @Nullable InverterDTO inverterDTO) {
  73         refreshLastReportWatts(inverterDTO);
  74         refreshMaxReportWatts(inverterDTO);
  75         refreshLastReportDate(inverterDTO);
  76         lastKnownState = inverterDTO;
  77     }
  78
  79     private void refreshLastReportWatts(final @Nullable InverterDTO inverterDTO) {
  80         updateState(INVERTER_CHANNEL_LAST_REPORT_WATTS,
  81                 inverterDTO == null ? UnDefType.UNDEF : new QuantityType<>(inverterDTO.lastReportWatts, Units.WATT));
  82     }
  83
  84     private void refreshMaxReportWatts(final @Nullable InverterDTO inverterDTO) {
  85         updateState(INVERTER_CHANNEL_MAX_REPORT_WATTS,
  86                 inverterDTO == null ? UnDefType.UNDEF : new QuantityType<>(inverterDTO.maxReportWatts, Units.WATT));
  87     }
  88
  89     private void refreshLastReportDate(final @Nullable InverterDTO inverterDTO) {
  90         final State state;
  91
  92         if (inverterDTO == null) {
  93             state = UnDefType.UNDEF;
  94         } else {
  95             final Instant instant = Instant.ofEpochSecond(inverterDTO.lastReportDate);
  96             final ZonedDateTime zonedDateTime = instant.atZone(ZoneId.systemDefault());
  97             logger.trace("[{}] Epoch time {}, zonedDateTime: {}", getThing().getUID(), inverterDTO.lastReportDate,
  98                     zonedDateTime);
  99             state = new DateTimeType(zonedDateTime);
 100         }
 101         updateState(INVERTER_CHANNEL_LAST_REPORT_DATE, state);
 102     }
 103 }