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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.meater.internal.handler;
  14
  15 import static org.openhab.binding.meater.internal.MeaterBindingConstants.*;
  16
  17 import java.util.Collection;
  18 import java.util.Map;
  19 import java.util.Set;
  20 import java.util.concurrent.ConcurrentHashMap;
  21 import java.util.concurrent.ScheduledFuture;
  22 import java.util.concurrent.TimeUnit;
  23
  24 import org.eclipse.jdt.annotation.NonNullByDefault;
  25 import org.eclipse.jdt.annotation.Nullable;
  26 import org.eclipse.jetty.client.HttpClient;
  27 import org.openhab.binding.meater.internal.MeaterBridgeConfiguration;
  28 import org.openhab.binding.meater.internal.api.MeaterRestAPI;
  29 import org.openhab.binding.meater.internal.discovery.MeaterDiscoveryService;
  30 import org.openhab.binding.meater.internal.dto.MeaterProbeDTO;
  31 import org.openhab.core.i18n.LocaleProvider;
  32 import org.openhab.core.i18n.TranslationProvider;
  33 import org.openhab.core.thing.Bridge;
  34 import org.openhab.core.thing.ChannelUID;
  35 import org.openhab.core.thing.ThingStatus;
  36 import org.openhab.core.thing.ThingStatusDetail;
  37 import org.openhab.core.thing.ThingTypeUID;
  38 import org.openhab.core.thing.binding.BaseBridgeHandler;
  39 import org.openhab.core.thing.binding.ThingHandlerService;
  40 import org.openhab.core.types.Command;
  41 import org.openhab.core.types.RefreshType;
  42 import org.slf4j.Logger;
  43 import org.slf4j.LoggerFactory;
  44
  45 import com.google.gson.Gson;
  46
  47 /**
  48  * The {@link MeaterBridgeHandler} is responsible for handling commands, which are
  49  * sent to one of the channels.
  50  *
  51  * @author Jan Gustafsson - Initial contribution
  52  */
  53 @NonNullByDefault
  54 public class MeaterBridgeHandler extends BaseBridgeHandler {
  55
  56     private final Logger logger = LoggerFactory.getLogger(MeaterBridgeHandler.class);
  57
  58     public static final Set<ThingTypeUID> SUPPORTED_THING_TYPES = Set.of(THING_TYPE_BRIDGE);
  59
  60     private final Gson gson;
  61     private final HttpClient httpClient;
  62     private final TranslationProvider i18nProvider;
  63     private final LocaleProvider localeProvider;
  64     private final Map<String, MeaterProbeDTO.Device> meaterProbeThings = new ConcurrentHashMap<>();
  65
  66     private int refreshTimeInSeconds = 300;
  67     private @Nullable MeaterRestAPI api;
  68     private @Nullable ScheduledFuture<?> refreshJob;
  69
  70     public MeaterBridgeHandler(Bridge bridge, HttpClient httpClient, Gson gson, TranslationProvider i18nProvider,
  71             LocaleProvider localeProvider) {
  72         super(bridge);
  73         this.httpClient = httpClient;
  74         this.gson = gson;
  75         this.i18nProvider = i18nProvider;
  76         this.localeProvider = localeProvider;
  77     }
  78
  79     @Override
  80     public void initialize() {
  81         MeaterBridgeConfiguration config = getConfigAs(MeaterBridgeConfiguration.class);
  82
  83         api = new MeaterRestAPI(config, gson, httpClient, localeProvider);
  84         refreshTimeInSeconds = config.refresh;
  85
  86         if (config.email.isBlank() || config.password.isBlank()) {
  87             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.CONFIGURATION_ERROR,
  88                     "@text/config.missing-username-password.description");
  89         } else {
  90             updateStatus(ThingStatus.UNKNOWN);
  91             scheduler.execute(() -> {
  92                 startAutomaticRefresh();
  93             });
  94         }
  95     }
  96
  97     public Map<String, MeaterProbeDTO.Device> getMeaterThings() {
  98         return meaterProbeThings;
  99     }
 100
 101     @Override
 102     public Collection<Class<? extends ThingHandlerService>> getServices() {
 103         return Set.of(MeaterDiscoveryService.class);
 104     }
 105
 106     @Override
 107     public void dispose() {
 108         stopAutomaticRefresh();
 109         meaterProbeThings.clear();
 110     }
 111
 112     private boolean refreshAndUpdateStatus() {
 113         MeaterRestAPI localAPI = api;
 114         if (localAPI != null) {
 115             if (localAPI.refresh(meaterProbeThings)) {
 116                 updateStatus(ThingStatus.ONLINE);
 117                 getThing().getThings().stream().forEach(thing -> {
 118                     MeaterHandler handler = (MeaterHandler) thing.getHandler();
 119                     if (handler != null) {
 120                         handler.update();
 121                     }
 122                 });
 123                 return true;
 124             } else {
 125                 updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR);
 126             }
 127         }
 128         return false;
 129     }
 130
 131     private void startAutomaticRefresh() {
 132         ScheduledFuture<?> refreshJob = this.refreshJob;
 133         if (refreshJob == null || refreshJob.isCancelled()) {
 134             this.refreshJob = scheduler.scheduleWithFixedDelay(this::refreshAndUpdateStatus, 0, refreshTimeInSeconds,
 135                     TimeUnit.SECONDS);
 136         }
 137     }
 138
 139     private void stopAutomaticRefresh() {
 140         ScheduledFuture<?> refreshJob = this.refreshJob;
 141         if (refreshJob != null) {
 142             refreshJob.cancel(true);
 143             this.refreshJob = null;
 144         }
 145     }
 146
 147     @Override
 148     public void handleCommand(ChannelUID channelUID, Command command) {
 149         logger.debug("Command received: {}", command);
 150         if (command instanceof RefreshType) {
 151             if (channelUID.getId().equals(CHANNEL_STATUS)) {
 152                 logger.debug("Refresh command on status channel {} will trigger instant refresh", channelUID);
 153                 refreshAndUpdateStatus();
 154             }
 155         }
 156     }
 157
 158     public TranslationProvider getI18nProvider() {
 159         return i18nProvider;
 160     }
 161
 162     public LocaleProvider getLocaleProvider() {
 163         return localeProvider;
 164     }
 165 }