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   1 /**
   2  * Copyright (c) 2010-2021 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.openuv.internal.handler;
  14
  15 import java.io.IOException;
  16 import java.time.Duration;
  17 import java.time.LocalDate;
  18 import java.time.LocalDateTime;
  19 import java.util.Collection;
  20 import java.util.Collections;
  21 import java.util.Properties;
  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.openhab.binding.openuv.internal.OpenUVException;
  28 import org.openhab.binding.openuv.internal.config.BridgeConfiguration;
  29 import org.openhab.binding.openuv.internal.discovery.OpenUVDiscoveryService;
  30 import org.openhab.binding.openuv.internal.json.OpenUVResponse;
  31 import org.openhab.binding.openuv.internal.json.OpenUVResult;
  32 import org.openhab.core.i18n.LocaleProvider;
  33 import org.openhab.core.i18n.LocationProvider;
  34 import org.openhab.core.i18n.TranslationProvider;
  35 import org.openhab.core.io.net.http.HttpUtil;
  36 import org.openhab.core.library.types.PointType;
  37 import org.openhab.core.thing.Bridge;
  38 import org.openhab.core.thing.ChannelUID;
  39 import org.openhab.core.thing.ThingStatus;
  40 import org.openhab.core.thing.ThingStatusDetail;
  41 import org.openhab.core.thing.binding.BaseBridgeHandler;
  42 import org.openhab.core.thing.binding.ThingHandlerService;
  43 import org.openhab.core.types.Command;
  44 import org.openhab.core.types.RefreshType;
  45 import org.slf4j.Logger;
  46 import org.slf4j.LoggerFactory;
  47
  48 import com.google.gson.Gson;
  49
  50 /**
  51  * {@link OpenUVBridgeHandler} is the handler for OpenUV API and connects it
  52  * to the webservice.
  53  *
  54  * @author Gaël L'hopital - Initial contribution
  55  *
  56  */
  57 @NonNullByDefault
  58 public class OpenUVBridgeHandler extends BaseBridgeHandler {
  59     private static final String QUERY_URL = "https://api.openuv.io/api/v1/uv?lat=%s&lng=%s&alt=%s";
  60     private static final int REQUEST_TIMEOUT_MS = (int) TimeUnit.SECONDS.toMillis(30);
  61
  62     private final Logger logger = LoggerFactory.getLogger(OpenUVBridgeHandler.class);
  63     private final Properties header = new Properties();
  64     private final Gson gson;
  65     private final LocationProvider locationProvider;
  66     private final TranslationProvider i18nProvider;
  67     private final LocaleProvider localeProvider;
  68
  69     private @Nullable ScheduledFuture<?> reconnectJob;
  70
  71     public OpenUVBridgeHandler(Bridge bridge, LocationProvider locationProvider, TranslationProvider i18nProvider,
  72             LocaleProvider localeProvider, Gson gson) {
  73         super(bridge);
  74         this.gson = gson;
  75         this.locationProvider = locationProvider;
  76         this.i18nProvider = i18nProvider;
  77         this.localeProvider = localeProvider;
  78     }
  79
  80     @Override
  81     public void initialize() {
  82         logger.debug("Initializing OpenUV API bridge handler.");
  83         BridgeConfiguration config = getConfigAs(BridgeConfiguration.class);
  84         if (config.apikey.isEmpty()) {
  85             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.CONFIGURATION_ERROR,
  86                     "@text/offline.config-error-unknown-apikey");
  87             return;
  88         }
  89         header.put("x-access-token", config.apikey);
  90         initiateConnexion();
  91     }
  92
  93     @Override
  94     public void dispose() {
  95         ScheduledFuture<?> job = this.reconnectJob;
  96         if (job != null && !job.isCancelled()) {
  97             job.cancel(true);
  98         }
  99         reconnectJob = null;
 100     }
 101
 102     @Override
 103     public void handleCommand(ChannelUID channelUID, Command command) {
 104         if (command instanceof RefreshType) {
 105             initiateConnexion();
 106             return;
 107         }
 108         logger.debug("The OpenUV bridge only handles Refresh command and not '{}'", command);
 109     }
 110
 111     private void initiateConnexion() {
 112         // Just checking if the provided api key is a valid one by making a fake call
 113         getUVData("0", "0", "0");
 114     }
 115
 116     public @Nullable OpenUVResult getUVData(String latitude, String longitude, String altitude) {
 117         try {
 118             String jsonData = HttpUtil.executeUrl("GET", String.format(QUERY_URL, latitude, longitude, altitude),
 119                     header, null, null, REQUEST_TIMEOUT_MS);
 120             OpenUVResponse uvResponse = gson.fromJson(jsonData, OpenUVResponse.class);
 121             if (uvResponse != null) {
 122                 String error = uvResponse.getError();
 123                 if (error == null) {
 124                     updateStatus(ThingStatus.ONLINE);
 125                     return uvResponse.getResult();
 126                 }
 127                 throw new OpenUVException(error);
 128             }
 129         } catch (IOException e) {
 130             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR, e.getMessage());
 131         } catch (OpenUVException e) {
 132             if (e.isQuotaError()) {
 133                 LocalDate today = LocalDate.now();
 134                 LocalDate tomorrow = today.plusDays(1);
 135                 LocalDateTime tomorrowMidnight = tomorrow.atStartOfDay().plusMinutes(2);
 136
 137                 updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR, String
 138                         .format("@text/offline.comm-error-quota-exceeded [ \"%s\" ]", tomorrowMidnight.toString()));
 139
 140                 reconnectJob = scheduler.schedule(this::initiateConnexion,
 141                         Duration.between(LocalDateTime.now(), tomorrowMidnight).toMinutes(), TimeUnit.MINUTES);
 142             } else {
 143                 updateStatus(ThingStatus.OFFLINE,
 144                         e.isApiKeyError() ? ThingStatusDetail.CONFIGURATION_ERROR : ThingStatusDetail.NONE,
 145                         e.getMessage());
 146             }
 147         }
 148         return null;
 149     }
 150
 151     @Override
 152     public Collection<Class<? extends ThingHandlerService>> getServices() {
 153         return Collections.singleton(OpenUVDiscoveryService.class);
 154     }
 155
 156     public @Nullable PointType getLocation() {
 157         return locationProvider.getLocation();
 158     }
 159
 160     public TranslationProvider getI18nProvider() {
 161         return i18nProvider;
 162     }
 163
 164     public LocaleProvider getLocaleProvider() {
 165         return localeProvider;
 166     }
 167 }