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   1 /**
   2  * Copyright (c) 2010-2022 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.mqtt.homeassistant.internal.component;
  14
  15 import java.util.concurrent.ScheduledExecutorService;
  16
  17 import org.eclipse.jdt.annotation.NonNullByDefault;
  18 import org.eclipse.jdt.annotation.Nullable;
  19 import org.openhab.binding.mqtt.generic.AvailabilityTracker;
  20 import org.openhab.binding.mqtt.generic.ChannelStateUpdateListener;
  21 import org.openhab.binding.mqtt.generic.TransformationServiceProvider;
  22 import org.openhab.binding.mqtt.homeassistant.internal.HaID;
  23 import org.openhab.binding.mqtt.homeassistant.internal.config.dto.AbstractChannelConfiguration;
  24 import org.openhab.binding.mqtt.homeassistant.internal.exception.ConfigurationException;
  25 import org.openhab.binding.mqtt.homeassistant.internal.exception.UnsupportedComponentException;
  26 import org.openhab.core.thing.ThingUID;
  27
  28 import com.google.gson.Gson;
  29
  30 /**
  31  * A factory to create HomeAssistant MQTT components. Those components are specified at:
  32  * https://www.home-assistant.io/docs/mqtt/discovery/
  33  *
  34  * @author David Graeff - Initial contribution
  35  */
  36 @NonNullByDefault
  37 public class ComponentFactory {
  38     /**
  39      * Create a HA MQTT component. The configuration JSon string is required.
  40      *
  41      * @param thingUID The Thing UID that this component will belong to.
  42      * @param haID The location of this component. The HomeAssistant ID contains the object-id, node-id and
  43      *            component-id.
  44      * @param channelConfigurationJSON Most components expect a "name", a "state_topic" and "command_topic" like with
  45      *            "{name:'Name',state_topic:'homeassistant/switch/0/object/state',command_topic:'homeassistant/switch/0/object/set'".
  46      * @param updateListener A channel state update listener
  47      * @return A HA MQTT Component
  48      */
  49     public static AbstractComponent<?> createComponent(ThingUID thingUID, HaID haID, String channelConfigurationJSON,
  50             ChannelStateUpdateListener updateListener, AvailabilityTracker tracker, ScheduledExecutorService scheduler,
  51             Gson gson, TransformationServiceProvider transformationServiceProvider) throws ConfigurationException {
  52         ComponentConfiguration componentConfiguration = new ComponentConfiguration(thingUID, haID,
  53                 channelConfigurationJSON, gson, updateListener, tracker, scheduler)
  54                         .transformationProvider(transformationServiceProvider);
  55         switch (haID.component) {
  56             case "alarm_control_panel":
  57                 return new AlarmControlPanel(componentConfiguration);
  58             case "binary_sensor":
  59                 return new BinarySensor(componentConfiguration);
  60             case "camera":
  61                 return new Camera(componentConfiguration);
  62             case "cover":
  63                 return new Cover(componentConfiguration);
  64             case "fan":
  65                 return new Fan(componentConfiguration);
  66             case "climate":
  67                 return new Climate(componentConfiguration);
  68             case "light":
  69                 return new Light(componentConfiguration);
  70             case "lock":
  71                 return new Lock(componentConfiguration);
  72             case "sensor":
  73                 return new Sensor(componentConfiguration);
  74             case "switch":
  75                 return new Switch(componentConfiguration);
  76             case "vacuum":
  77                 return new Vacuum(componentConfiguration);
  78             default:
  79                 throw new UnsupportedComponentException("Component '" + haID + "' is unsupported!");
  80         }
  81     }
  82
  83     protected static class ComponentConfiguration {
  84         private final ThingUID thingUID;
  85         private final HaID haID;
  86         private final String configJSON;
  87         private final ChannelStateUpdateListener updateListener;
  88         private final AvailabilityTracker tracker;
  89         private final Gson gson;
  90         private final ScheduledExecutorService scheduler;
  91         private @Nullable TransformationServiceProvider transformationServiceProvider;
  92
  93         /**
  94          * Provide a thingUID and HomeAssistant topic ID to determine the channel group UID and type.
  95          *
  96          * @param thingUID A ThingUID
  97          * @param haID A HomeAssistant topic ID
  98          * @param configJSON The configuration string
  99          * @param gson A Gson instance
 100          */
 101         protected ComponentConfiguration(ThingUID thingUID, HaID haID, String configJSON, Gson gson,
 102                 ChannelStateUpdateListener updateListener, AvailabilityTracker tracker,
 103                 ScheduledExecutorService scheduler) {
 104             this.thingUID = thingUID;
 105             this.haID = haID;
 106             this.configJSON = configJSON;
 107             this.gson = gson;
 108             this.updateListener = updateListener;
 109             this.tracker = tracker;
 110             this.scheduler = scheduler;
 111         }
 112
 113         public ComponentConfiguration transformationProvider(
 114                 TransformationServiceProvider transformationServiceProvider) {
 115             this.transformationServiceProvider = transformationServiceProvider;
 116             return this;
 117         }
 118
 119         public ThingUID getThingUID() {
 120             return thingUID;
 121         }
 122
 123         public HaID getHaID() {
 124             return haID;
 125         }
 126
 127         public String getConfigJSON() {
 128             return configJSON;
 129         }
 130
 131         public ChannelStateUpdateListener getUpdateListener() {
 132             return updateListener;
 133         }
 134
 135         @Nullable
 136         public TransformationServiceProvider getTransformationServiceProvider() {
 137             return transformationServiceProvider;
 138         }
 139
 140         public Gson getGson() {
 141             return gson;
 142         }
 143
 144         public AvailabilityTracker getTracker() {
 145             return tracker;
 146         }
 147
 148         public ScheduledExecutorService getScheduler() {
 149             return scheduler;
 150         }
 151
 152         public <C extends AbstractChannelConfiguration> C getConfig(Class<C> clazz) {
 153             return AbstractChannelConfiguration.fromString(configJSON, gson, clazz);
 154         }
 155     }
 156 }