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   1 /**
   2  * Copyright (c) 2010-2024 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.mercedesme.internal;
  14
  15 import javax.measure.Unit;
  16 import javax.measure.quantity.Length;
  17
  18 import org.eclipse.jdt.annotation.NonNullByDefault;
  19 import org.openhab.core.common.registry.RegistryChangeListener;
  20 import org.openhab.core.i18n.UnitProvider;
  21 import org.openhab.core.items.Metadata;
  22 import org.openhab.core.items.MetadataKey;
  23 import org.openhab.core.items.MetadataRegistry;
  24 import org.openhab.core.library.unit.ImperialUnits;
  25 import org.openhab.core.library.unit.SIUnits;
  26 import org.openhab.core.library.unit.Units;
  27 import org.openhab.core.thing.ChannelUID;
  28 import org.openhab.core.thing.link.ItemChannelLink;
  29 import org.openhab.core.thing.link.ItemChannelLinkRegistry;
  30
  31 /**
  32  * {@link MercedesMeMetadataAdjuster} changes Metadata for channels not providing the system default unit
  33  *
  34  * @author Bernd Weymann - Initial contribution
  35  */
  36 @NonNullByDefault
  37 public class MercedesMeMetadataAdjuster implements RegistryChangeListener<ItemChannelLink> {
  38     private final MetadataRegistry metadataRegistry;
  39     private final ItemChannelLinkRegistry channelLinkRegistry;
  40     private final UnitProvider unitProvider;
  41
  42     public MercedesMeMetadataAdjuster(MetadataRegistry mdr, ItemChannelLinkRegistry iclr, UnitProvider up) {
  43         metadataRegistry = mdr;
  44         channelLinkRegistry = iclr;
  45         unitProvider = up;
  46         channelLinkRegistry.addRegistryChangeListener(this);
  47     }
  48
  49     /**
  50      * Adjust Units to binding defaults
  51      */
  52     @Override
  53     public void added(ItemChannelLink element) {
  54         ChannelUID cuid = element.getLinkedUID();
  55         String itemName = element.getItemName();
  56         if (Constants.BINDING_ID.equals(cuid.getBindingId())) {
  57             MetadataKey key = new MetadataKey("unit", itemName);
  58             switch (cuid.getId()) {
  59                 case Constants.GROUP_RANGE + ChannelUID.CHANNEL_GROUP_SEPARATOR + "mileage":
  60                 case Constants.GROUP_RANGE + ChannelUID.CHANNEL_GROUP_SEPARATOR + "range-electric":
  61                 case Constants.GROUP_RANGE + ChannelUID.CHANNEL_GROUP_SEPARATOR + "radius-electric":
  62                 case Constants.GROUP_RANGE + ChannelUID.CHANNEL_GROUP_SEPARATOR + "range-fuel":
  63                 case Constants.GROUP_RANGE + ChannelUID.CHANNEL_GROUP_SEPARATOR + "radius-fuel":
  64                 case Constants.GROUP_RANGE + ChannelUID.CHANNEL_GROUP_SEPARATOR + "range-hybrid":
  65                 case Constants.GROUP_RANGE + ChannelUID.CHANNEL_GROUP_SEPARATOR + "radius-hybrid":
  66                 case Constants.GROUP_RANGE + ChannelUID.CHANNEL_GROUP_SEPARATOR + "home-distance":
  67                 case Constants.GROUP_TRIP + ChannelUID.CHANNEL_GROUP_SEPARATOR + "distance":
  68                 case Constants.GROUP_TRIP + ChannelUID.CHANNEL_GROUP_SEPARATOR + "distance-reset":
  69                     if (metadataRegistry.get(key) == null) {
  70                         Unit<Length> lengthUnit = unitProvider.getUnit(Length.class);
  71                         if (ImperialUnits.FOOT.equals(lengthUnit)) {
  72                             metadataRegistry.add(new Metadata(key, ImperialUnits.MILE.getSymbol(), null));
  73                         } else if (SIUnits.METRE.equals(lengthUnit)) {
  74                             metadataRegistry.add(new Metadata(key, Constants.KILOMETRE_UNIT.toString(), null));
  75                         }
  76                     }
  77                     break;
  78                 case Constants.GROUP_RANGE + ChannelUID.CHANNEL_GROUP_SEPARATOR + "soc":
  79                 case Constants.GROUP_CHARGE + ChannelUID.CHANNEL_GROUP_SEPARATOR + "max-soc":
  80                 case Constants.GROUP_RANGE + ChannelUID.CHANNEL_GROUP_SEPARATOR + "fuel-level":
  81                     if (metadataRegistry.get(key) == null) {
  82                         metadataRegistry.add(new Metadata(key, Units.PERCENT.getSymbol(), null));
  83                     }
  84                     break;
  85                 case Constants.GROUP_TIRES + ChannelUID.CHANNEL_GROUP_SEPARATOR + "pressure-front-left":
  86                 case Constants.GROUP_TIRES + ChannelUID.CHANNEL_GROUP_SEPARATOR + "pressure-front-right":
  87                 case Constants.GROUP_TIRES + ChannelUID.CHANNEL_GROUP_SEPARATOR + "pressure-rear-left":
  88                 case Constants.GROUP_TIRES + ChannelUID.CHANNEL_GROUP_SEPARATOR + "pressure-rear-right":
  89                     if (metadataRegistry.get(key) == null) {
  90                         Unit<Length> lengthUnit = unitProvider.getUnit(Length.class);
  91                         if (ImperialUnits.FOOT.equals(lengthUnit)) {
  92                             metadataRegistry
  93                                     .add(new Metadata(key, ImperialUnits.POUND_FORCE_SQUARE_INCH.getSymbol(), null));
  94                         } else if (SIUnits.METRE.equals(lengthUnit)) {
  95                             metadataRegistry.add(new Metadata(key, Units.BAR.getSymbol(), null));
  96                         }
  97                     }
  98                     break;
  99             }
 100         }
 101     }
 102
 103     @Override
 104     public void removed(ItemChannelLink element) {
 105     }
 106
 107     @Override
 108     public void updated(ItemChannelLink oldElement, ItemChannelLink element) {
 109     }
 110 }