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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.amplipi.internal;
  14
  15 import static org.openhab.binding.amplipi.internal.AmpliPiBindingConstants.*;
  16
  17 import java.util.ArrayList;
  18 import java.util.Collection;
  19 import java.util.List;
  20 import java.util.Map;
  21 import java.util.Set;
  22 import java.util.concurrent.ExecutionException;
  23 import java.util.concurrent.ScheduledFuture;
  24 import java.util.concurrent.TimeUnit;
  25 import java.util.concurrent.TimeoutException;
  26
  27 import org.eclipse.jdt.annotation.NonNullByDefault;
  28 import org.eclipse.jdt.annotation.Nullable;
  29 import org.eclipse.jetty.client.HttpClient;
  30 import org.eclipse.jetty.client.api.ContentResponse;
  31 import org.eclipse.jetty.client.util.StringContentProvider;
  32 import org.eclipse.jetty.http.HttpMethod;
  33 import org.eclipse.jetty.http.HttpStatus;
  34 import org.openhab.binding.amplipi.internal.audio.PAAudioSink;
  35 import org.openhab.binding.amplipi.internal.discovery.AmpliPiZoneAndGroupDiscoveryService;
  36 import org.openhab.binding.amplipi.internal.model.Announcement;
  37 import org.openhab.binding.amplipi.internal.model.Preset;
  38 import org.openhab.binding.amplipi.internal.model.SourceUpdate;
  39 import org.openhab.binding.amplipi.internal.model.Status;
  40 import org.openhab.binding.amplipi.internal.model.Stream;
  41 import org.openhab.core.audio.AudioHTTPServer;
  42 import org.openhab.core.library.types.DecimalType;
  43 import org.openhab.core.library.types.PercentType;
  44 import org.openhab.core.library.types.StringType;
  45 import org.openhab.core.thing.Bridge;
  46 import org.openhab.core.thing.ChannelUID;
  47 import org.openhab.core.thing.Thing;
  48 import org.openhab.core.thing.ThingStatus;
  49 import org.openhab.core.thing.ThingStatusDetail;
  50 import org.openhab.core.thing.binding.BaseBridgeHandler;
  51 import org.openhab.core.thing.binding.ThingHandlerService;
  52 import org.openhab.core.types.Command;
  53 import org.openhab.core.types.RefreshType;
  54 import org.openhab.core.types.UnDefType;
  55 import org.slf4j.Logger;
  56 import org.slf4j.LoggerFactory;
  57
  58 import com.google.gson.Gson;
  59
  60 /**
  61  * The {@link AmpliPiHandler} is responsible for handling commands, which are
  62  * sent to one of the channels.
  63  *
  64  * @author Kai Kreuzer - Initial contribution
  65  */
  66 @NonNullByDefault
  67 public class AmpliPiHandler extends BaseBridgeHandler {
  68
  69     private static final int REQUEST_TIMEOUT = 5000;
  70
  71     private final Logger logger = LoggerFactory.getLogger(AmpliPiHandler.class);
  72
  73     private final HttpClient httpClient;
  74     private AudioHTTPServer audioHTTPServer;
  75     private final Gson gson;
  76     private @Nullable String callbackUrl;
  77
  78     private String url = "http://amplipi";
  79     private List<Preset> presets = List.of();
  80     private List<Stream> streams = List.of();
  81     private List<AmpliPiStatusChangeListener> changeListeners = new ArrayList<>();
  82
  83     private @Nullable ScheduledFuture<?> refreshJob;
  84
  85     public AmpliPiHandler(Thing thing, HttpClient httpClient, AudioHTTPServer audioHTTPServer,
  86             @Nullable String callbackUrl) {
  87         super((Bridge) thing);
  88         this.httpClient = httpClient;
  89         this.audioHTTPServer = audioHTTPServer;
  90         this.callbackUrl = callbackUrl;
  91         this.gson = new Gson();
  92     }
  93
  94     @Override
  95     public void handleCommand(ChannelUID channelUID, Command command) {
  96         AmpliPiConfiguration config = getConfigAs(AmpliPiConfiguration.class);
  97         url = "http://" + config.hostname;
  98
  99         if (CHANNEL_PRESET.equals(channelUID.getId())) {
 100             if (command instanceof RefreshType) {
 101                 updateState(channelUID, UnDefType.NULL);
 102             } else if (command instanceof DecimalType decimalCommand) {
 103                 try {
 104                     ContentResponse response = this.httpClient
 105                             .newRequest(url + "/api/presets/" + decimalCommand.intValue() + "/load")
 106                             .method(HttpMethod.POST).timeout(REQUEST_TIMEOUT, TimeUnit.MILLISECONDS).send();
 107                     if (response.getStatus() != HttpStatus.OK_200) {
 108                         logger.error("AmpliPi API returned HTTP status {}.", response.getStatus());
 109                         logger.debug("Content: {}", response.getContentAsString());
 110                     }
 111                 } catch (InterruptedException | TimeoutException | ExecutionException e) {
 112                     updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR,
 113                             "AmpliPi request failed: " + e.getMessage());
 114                 }
 115             }
 116         } else if (channelUID.getId().startsWith(CHANNEL_INPUT)) {
 117             if (command instanceof StringType stringCommand) {
 118                 int source = Integer.valueOf(channelUID.getId().substring(CHANNEL_INPUT.length())) - 1;
 119                 SourceUpdate update = new SourceUpdate();
 120                 update.setInput(stringCommand.toString());
 121                 try {
 122                     StringContentProvider contentProvider = new StringContentProvider(gson.toJson(update));
 123                     ContentResponse response = this.httpClient.newRequest(url + "/api/sources/" + source)
 124                             .method(HttpMethod.PATCH).content(contentProvider, "application/json")
 125                             .timeout(REQUEST_TIMEOUT, TimeUnit.MILLISECONDS).send();
 126                     if (response.getStatus() != HttpStatus.OK_200) {
 127                         logger.error("AmpliPi API returned HTTP status {}.", response.getStatus());
 128                         logger.debug("Content: {}", response.getContentAsString());
 129                     }
 130                 } catch (InterruptedException | TimeoutException | ExecutionException e) {
 131                     updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR,
 132                             "AmpliPi request failed: " + e.getMessage());
 133                 }
 134             }
 135         }
 136     }
 137
 138     @Override
 139     public void initialize() {
 140         AmpliPiConfiguration config = getConfigAs(AmpliPiConfiguration.class);
 141         url = "http://" + config.hostname;
 142
 143         updateStatus(ThingStatus.UNKNOWN);
 144
 145         refreshJob = scheduler.scheduleWithFixedDelay(() -> {
 146             try {
 147                 ContentResponse response = this.httpClient.newRequest(url + "/api")
 148                         .timeout(REQUEST_TIMEOUT, TimeUnit.MILLISECONDS).send();
 149                 if (response.getStatus() == HttpStatus.OK_200) {
 150                     Status currentStatus = this.gson.fromJson(response.getContentAsString(), Status.class);
 151                     if (currentStatus != null) {
 152                         updateStatus(ThingStatus.ONLINE);
 153                         setProperties(currentStatus);
 154                         setInputs(currentStatus);
 155                         presets = currentStatus.getPresets();
 156                         streams = currentStatus.getStreams();
 157                         changeListeners.forEach(l -> l.receive(currentStatus));
 158                     } else {
 159                         updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR,
 160                                 "No valid response from AmpliPi API.");
 161                         logger.debug("Received response: {}", response.getContentAsString());
 162                     }
 163                 } else {
 164                     updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR,
 165                             "AmpliPi API returned HTTP status " + response.getStatus() + ".");
 166                 }
 167             } catch (InterruptedException | TimeoutException | ExecutionException e) {
 168                 updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR,
 169                         "AmpliPi request failed: " + e.getMessage());
 170             } catch (Exception e) {
 171                 logger.error("Unexpected error occurred: {}", e.getMessage());
 172             }
 173         }, 0, config.refreshInterval, TimeUnit.SECONDS);
 174     }
 175
 176     private void setProperties(Status currentStatus) {
 177         String version = currentStatus.getInfo().getVersion();
 178         Map<String, String> props = editProperties();
 179         props.put(Thing.PROPERTY_FIRMWARE_VERSION, version);
 180         updateProperties(props);
 181     }
 182
 183     private void setInputs(Status currentStatus) {
 184         currentStatus.getSources().forEach(source -> {
 185             updateState(CHANNEL_INPUT + (source.getId() + 1), new StringType(source.getInput()));
 186         });
 187     }
 188
 189     @Override
 190     public void dispose() {
 191         if (refreshJob != null) {
 192             refreshJob.cancel(true);
 193             refreshJob = null;
 194         }
 195     }
 196
 197     @Override
 198     public Collection<Class<? extends ThingHandlerService>> getServices() {
 199         return Set.of(PresetCommandOptionProvider.class, InputStateOptionProvider.class,
 200                 AmpliPiZoneAndGroupDiscoveryService.class, PAAudioSink.class);
 201     }
 202
 203     public List<Preset> getPresets() {
 204         return presets;
 205     }
 206
 207     public List<Stream> getStreams() {
 208         return streams;
 209     }
 210
 211     public String getUrl() {
 212         return url;
 213     }
 214
 215     public AudioHTTPServer getAudioHTTPServer() {
 216         return audioHTTPServer;
 217     }
 218
 219     public void addStatusChangeListener(AmpliPiStatusChangeListener listener) {
 220         changeListeners.add(listener);
 221     }
 222
 223     public void removeStatusChangeListener(AmpliPiStatusChangeListener listener) {
 224         changeListeners.remove(listener);
 225     }
 226
 227     public void playPA(String audioUrl, @Nullable PercentType volume) {
 228         Announcement announcement = new Announcement();
 229         announcement.setMedia(audioUrl);
 230         if (volume != null) {
 231             announcement.setVol(AmpliPiUtils.percentTypeToVolume(volume));
 232         }
 233         String url = getUrl() + "/api/announce";
 234         StringContentProvider contentProvider = new StringContentProvider(gson.toJson(announcement));
 235         try {
 236             ContentResponse response = httpClient.newRequest(url).method(HttpMethod.POST)
 237                     .content(contentProvider, "application/json").send();
 238             if (response.getStatus() != HttpStatus.OK_200) {
 239                 logger.error("AmpliPi API returned HTTP status {}.", response.getStatus());
 240                 logger.debug("Content: {}", response.getContentAsString());
 241             } else {
 242                 logger.debug("PA request sent successfully.");
 243             }
 244         } catch (InterruptedException | TimeoutException | ExecutionException e) {
 245             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR,
 246                     "AmpliPi request failed: " + e.getMessage());
 247         }
 248     }
 249
 250     public @Nullable String getCallbackUrl() {
 251         return callbackUrl;
 252     }
 253 }