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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.Collections;
  19 import java.util.Map;
  20 import java.util.Set;
  21 import java.util.concurrent.ConcurrentHashMap;
  22 import java.util.concurrent.ScheduledFuture;
  23 import java.util.concurrent.TimeUnit;
  24
  25 import org.eclipse.jdt.annotation.NonNullByDefault;
  26 import org.eclipse.jdt.annotation.Nullable;
  27 import org.eclipse.jetty.client.HttpClient;
  28 import org.openhab.binding.meater.internal.MeaterBridgeConfiguration;
  29 import org.openhab.binding.meater.internal.api.MeaterRestAPI;
  30 import org.openhab.binding.meater.internal.discovery.MeaterDiscoveryService;
  31 import org.openhab.binding.meater.internal.dto.MeaterProbeDTO;
  32 import org.openhab.core.i18n.LocaleProvider;
  33 import org.openhab.core.i18n.TranslationProvider;
  34 import org.openhab.core.thing.Bridge;
  35 import org.openhab.core.thing.ChannelUID;
  36 import org.openhab.core.thing.ThingStatus;
  37 import org.openhab.core.thing.ThingStatusDetail;
  38 import org.openhab.core.thing.ThingTypeUID;
  39 import org.openhab.core.thing.binding.BaseBridgeHandler;
  40 import org.openhab.core.thing.binding.ThingHandlerService;
  41 import org.openhab.core.types.Command;
  42 import org.openhab.core.types.RefreshType;
  43 import org.slf4j.Logger;
  44 import org.slf4j.LoggerFactory;
  45
  46 import com.google.gson.Gson;
  47
  48 /**
  49  * The {@link MeaterBridgeHandler} is responsible for handling commands, which are
  50  * sent to one of the channels.
  51  *
  52  * @author Jan Gustafsson - Initial contribution
  53  */
  54 @NonNullByDefault
  55 public class MeaterBridgeHandler extends BaseBridgeHandler {
  56
  57     private final Logger logger = LoggerFactory.getLogger(MeaterBridgeHandler.class);
  58
  59     public static final Set<ThingTypeUID> SUPPORTED_THING_TYPES = Collections.singleton(THING_TYPE_BRIDGE);
  60
  61     private final Gson gson;
  62     private final HttpClient httpClient;
  63     private final TranslationProvider i18nProvider;
  64     private final LocaleProvider localeProvider;
  65     private final Map<String, MeaterProbeDTO.Device> meaterProbeThings = new ConcurrentHashMap<>();
  66
  67     private int refreshTimeInSeconds = 300;
  68     private @Nullable MeaterRestAPI api;
  69     private @Nullable ScheduledFuture<?> refreshJob;
  70
  71     public MeaterBridgeHandler(Bridge bridge, HttpClient httpClient, Gson gson, TranslationProvider i18nProvider,
  72             LocaleProvider localeProvider) {
  73         super(bridge);
  74         this.httpClient = httpClient;
  75         this.gson = gson;
  76         this.i18nProvider = i18nProvider;
  77         this.localeProvider = localeProvider;
  78     }
  79
  80     @Override
  81     public void initialize() {
  82         MeaterBridgeConfiguration config = getConfigAs(MeaterBridgeConfiguration.class);
  83
  84         api = new MeaterRestAPI(config, gson, httpClient, localeProvider);
  85         refreshTimeInSeconds = config.refresh;
  86
  87         if (config.email.isBlank() || config.password.isBlank()) {
  88             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.CONFIGURATION_ERROR,
  89                     "@text/config.missing-username-password.description");
  90         } else {
  91             updateStatus(ThingStatus.UNKNOWN);
  92             scheduler.execute(() -> {
  93                 startAutomaticRefresh();
  94             });
  95         }
  96     }
  97
  98     public Map<String, MeaterProbeDTO.Device> getMeaterThings() {
  99         return meaterProbeThings;
 100     }
 101
 102     @Override
 103     public Collection<Class<? extends ThingHandlerService>> getServices() {
 104         return Collections.singleton(MeaterDiscoveryService.class);
 105     }
 106
 107     @Override
 108     public void dispose() {
 109         stopAutomaticRefresh();
 110         meaterProbeThings.clear();
 111     }
 112
 113     private boolean refreshAndUpdateStatus() {
 114         MeaterRestAPI localAPI = api;
 115         if (localAPI != null) {
 116             if (localAPI.refresh(meaterProbeThings)) {
 117                 updateStatus(ThingStatus.ONLINE);
 118                 getThing().getThings().stream().forEach(thing -> {
 119                     MeaterHandler handler = (MeaterHandler) thing.getHandler();
 120                     if (handler != null) {
 121                         handler.update();
 122                     }
 123                 });
 124                 return true;
 125             } else {
 126                 updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR);
 127             }
 128         }
 129         return false;
 130     }
 131
 132     private void startAutomaticRefresh() {
 133         ScheduledFuture<?> refreshJob = this.refreshJob;
 134         if (refreshJob == null || refreshJob.isCancelled()) {
 135             this.refreshJob = scheduler.scheduleWithFixedDelay(this::refreshAndUpdateStatus, 0, refreshTimeInSeconds,
 136                     TimeUnit.SECONDS);
 137         }
 138     }
 139
 140     private void stopAutomaticRefresh() {
 141         ScheduledFuture<?> refreshJob = this.refreshJob;
 142         if (refreshJob != null) {
 143             refreshJob.cancel(true);
 144             this.refreshJob = null;
 145         }
 146     }
 147
 148     @Override
 149     public void handleCommand(ChannelUID channelUID, Command command) {
 150         logger.debug("Command received: {}", command);
 151         if (command instanceof RefreshType) {
 152             if (channelUID.getId().equals(CHANNEL_STATUS)) {
 153                 logger.debug("Refresh command on status channel {} will trigger instant refresh", channelUID);
 154                 refreshAndUpdateStatus();
 155             }
 156         }
 157     }
 158
 159     public TranslationProvider getI18nProvider() {
 160         return i18nProvider;
 161     }
 162
 163     public LocaleProvider getLocaleProvider() {
 164         return localeProvider;
 165     }
 166 }