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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.nest.internal.sdm.discovery;
  14
  15 import static org.openhab.binding.nest.internal.sdm.SDMBindingConstants.*;
  16
  17 import java.util.HashMap;
  18 import java.util.List;
  19 import java.util.concurrent.Future;
  20
  21 import org.eclipse.jdt.annotation.NonNullByDefault;
  22 import org.eclipse.jdt.annotation.Nullable;
  23 import org.openhab.binding.nest.internal.sdm.config.SDMDeviceConfiguration;
  24 import org.openhab.binding.nest.internal.sdm.dto.SDMDevice;
  25 import org.openhab.binding.nest.internal.sdm.dto.SDMDeviceType;
  26 import org.openhab.binding.nest.internal.sdm.dto.SDMParentRelation;
  27 import org.openhab.binding.nest.internal.sdm.exception.FailedSendingSDMDataException;
  28 import org.openhab.binding.nest.internal.sdm.exception.InvalidSDMAccessTokenException;
  29 import org.openhab.binding.nest.internal.sdm.handler.SDMAccountHandler;
  30 import org.openhab.binding.nest.internal.sdm.handler.SDMBaseHandler;
  31 import org.openhab.core.config.discovery.AbstractDiscoveryService;
  32 import org.openhab.core.config.discovery.DiscoveryResultBuilder;
  33 import org.openhab.core.thing.ThingTypeUID;
  34 import org.openhab.core.thing.ThingUID;
  35 import org.openhab.core.thing.binding.ThingHandler;
  36 import org.openhab.core.thing.binding.ThingHandlerService;
  37 import org.osgi.service.component.ComponentContext;
  38 import org.slf4j.Logger;
  39 import org.slf4j.LoggerFactory;
  40
  41 /**
  42  * The {@link SDMDiscoveryService} is discovers devices using the SDM API list devices method.
  43  *
  44  * @author Brian Higginbotham - Initial contribution
  45  * @author Wouter Born - Initial contribution
  46  *
  47  * @see https://developers.google.com/nest/device-access/reference/rest/v1/enterprises.devices/list
  48  */
  49 @NonNullByDefault
  50 public class SDMDiscoveryService extends AbstractDiscoveryService implements ThingHandlerService {
  51
  52     private final Logger logger = LoggerFactory.getLogger(SDMDiscoveryService.class);
  53     private @NonNullByDefault({}) SDMAccountHandler accountHandler;
  54     private @Nullable Future<?> discoveryJob;
  55
  56     public SDMDiscoveryService() {
  57         super(SUPPORTED_THING_TYPES_UIDS, 30, false);
  58     }
  59
  60     protected void activate(ComponentContext context) {
  61     }
  62
  63     @Override
  64     public void deactivate() {
  65         cancelDiscoveryJob();
  66         super.deactivate();
  67     }
  68
  69     @Override
  70     public @Nullable ThingHandler getThingHandler() {
  71         return accountHandler;
  72     }
  73
  74     @Override
  75     public void setThingHandler(ThingHandler handler) {
  76         if (handler instanceof SDMAccountHandler) {
  77             accountHandler = (SDMAccountHandler) handler;
  78         }
  79     }
  80
  81     @Override
  82     protected void startScan() {
  83         cancelDiscoveryJob();
  84         discoveryJob = scheduler.submit(this::discoverDevices);
  85     }
  86
  87     @Override
  88     protected synchronized void stopScan() {
  89         cancelDiscoveryJob();
  90         super.stopScan();
  91     }
  92
  93     private void cancelDiscoveryJob() {
  94         Future<?> localDiscoveryJob = discoveryJob;
  95         if (localDiscoveryJob != null) {
  96             localDiscoveryJob.cancel(true);
  97         }
  98     }
  99
 100     private void discoverDevices() {
 101         ThingUID bridgeUID = accountHandler.getThing().getUID();
 102         logger.debug("Starting discovery scan for {}", bridgeUID);
 103         try {
 104             accountHandler.getAPI().listDevices().forEach(device -> addDeviceDiscoveryResult(bridgeUID, device));
 105         } catch (FailedSendingSDMDataException | InvalidSDMAccessTokenException e) {
 106             logger.debug("Exception during discovery scan for {}", bridgeUID, e);
 107         }
 108         logger.debug("Finished discovery scan for {}", bridgeUID);
 109     }
 110
 111     private void addDeviceDiscoveryResult(ThingUID bridgeUID, SDMDevice device) {
 112         SDMDeviceType type = device.type;
 113         ThingTypeUID thingTypeUID = type == null ? null : SDM_THING_TYPE_MAPPING.get(type);
 114         if (type == null || thingTypeUID == null) {
 115             logger.debug("Ignoring unsupported device type: {}", type);
 116             return;
 117         }
 118
 119         String deviceId = device.name.deviceId;
 120         ThingUID thingUID = new ThingUID(thingTypeUID, bridgeUID, deviceId);
 121
 122         thingDiscovered(DiscoveryResultBuilder.create(thingUID) //
 123                 .withThingType(thingTypeUID) //
 124                 .withLabel(getDeviceLabel(device, type)) //
 125                 .withBridge(bridgeUID) //
 126                 .withProperty(SDMDeviceConfiguration.DEVICE_ID, deviceId) //
 127                 .withProperties(new HashMap<>(SDMBaseHandler.getDeviceProperties(device))) //
 128                 .withRepresentationProperty(SDMDeviceConfiguration.DEVICE_ID) //
 129                 .build() //
 130         );
 131     }
 132
 133     private String getDeviceLabel(SDMDevice device, SDMDeviceType type) {
 134         String label = device.traits.deviceInfo.customName;
 135         if (!label.isBlank()) {
 136             return label;
 137         }
 138
 139         List<SDMParentRelation> parentRelations = device.parentRelations;
 140         String displayName = !parentRelations.isEmpty() ? parentRelations.get(0).displayName : "";
 141         String typeLabel = type.toLabel();
 142
 143         return displayName.isBlank() ? String.format("Nest %s", typeLabel)
 144                 : String.format("Nest %s %s", displayName, typeLabel);
 145     }
 146 }