git.basschouten.com Git - openhab-addons.git/blob

   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.netatmo.internal.deserialization;
  14
  15 import java.time.Instant;
  16 import java.time.ZonedDateTime;
  17
  18 import org.eclipse.jdt.annotation.NonNullByDefault;
  19 import org.eclipse.jdt.annotation.Nullable;
  20 import org.openhab.binding.netatmo.internal.api.NetatmoException;
  21 import org.openhab.binding.netatmo.internal.api.data.ModuleType;
  22 import org.openhab.binding.netatmo.internal.api.dto.HomeData;
  23 import org.openhab.core.i18n.TimeZoneProvider;
  24 import org.openhab.core.library.types.OnOffType;
  25 import org.openhab.core.library.types.OpenClosedType;
  26 import org.osgi.service.component.annotations.Activate;
  27 import org.osgi.service.component.annotations.Component;
  28 import org.osgi.service.component.annotations.Reference;
  29
  30 import com.google.gson.FieldNamingPolicy;
  31 import com.google.gson.Gson;
  32 import com.google.gson.GsonBuilder;
  33 import com.google.gson.JsonDeserializer;
  34 import com.google.gson.JsonSyntaxException;
  35
  36 /**
  37  * The {@link NADeserializer} is responsible to instantiate suitable Gson (de)serializer
  38  *
  39  * @author Gaël L'hopital - Initial contribution
  40  */
  41 @NonNullByDefault
  42 @Component(service = NADeserializer.class)
  43 public class NADeserializer {
  44     private final Gson gson;
  45
  46     @Activate
  47     public NADeserializer(@Reference TimeZoneProvider timeZoneProvider) {
  48         gson = new GsonBuilder().setFieldNamingPolicy(FieldNamingPolicy.LOWER_CASE_WITH_UNDERSCORES)
  49                 .registerTypeAdapterFactory(new StrictEnumTypeAdapterFactory())
  50                 .registerTypeAdapter(NAObjectMap.class, new NAObjectMapDeserializer())
  51                 .registerTypeAdapter(NAPushType.class, new NAPushTypeDeserializer())
  52                 .registerTypeAdapter(ModuleType.class, new ModuleTypeDeserializer())
  53                 .registerTypeAdapter(HomeData.class,
  54                         (JsonDeserializer<HomeData>) (json, type, context) -> context.deserialize(json,
  55                                 json.getAsJsonObject().has("therm_mode") ? HomeData.Energy.class
  56                                         : HomeData.Security.class))
  57                 .registerTypeAdapter(ZonedDateTime.class, (JsonDeserializer<ZonedDateTime>) (json, type, context) -> {
  58                     long netatmoTS = json.getAsJsonPrimitive().getAsLong();
  59                     Instant i = Instant.ofEpochSecond(netatmoTS);
  60                     return ZonedDateTime.ofInstant(i, timeZoneProvider.getTimeZone());
  61                 })
  62                 .registerTypeAdapter(OnOffType.class,
  63                         (JsonDeserializer<OnOffType>) (json, type, context) -> OnOffType
  64                                 .from(json.getAsJsonPrimitive().getAsString()))
  65                 .registerTypeAdapter(OpenClosedType.class, (JsonDeserializer<OpenClosedType>) (json, type, context) -> {
  66                     String value = json.getAsJsonPrimitive().getAsString().toUpperCase();
  67                     return "TRUE".equals(value) || "1".equals(value) ? OpenClosedType.CLOSED : OpenClosedType.OPEN;
  68                 }).create();
  69     }
  70
  71     public <T> T deserialize(Class<T> clazz, String json) throws NetatmoException {
  72         try {
  73             @Nullable
  74             T result = gson.fromJson(json, clazz);
  75             if (result != null) {
  76                 return result;
  77             }
  78             throw new NetatmoException("Deserialization of '%s' resulted in null value", json);
  79         } catch (JsonSyntaxException e) {
  80             throw new NetatmoException(e, "Unexpected error deserializing '%s'", json);
  81         }
  82     }
  83 }