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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.mqtt.homeassistant.internal;
  14
  15 import java.util.List;
  16 import java.util.concurrent.CompletableFuture;
  17 import java.util.concurrent.ScheduledExecutorService;
  18 import java.util.stream.Stream;
  19
  20 import org.eclipse.jdt.annotation.NonNullByDefault;
  21 import org.eclipse.jdt.annotation.Nullable;
  22 import org.openhab.binding.mqtt.generic.ChannelStateUpdateListener;
  23 import org.openhab.binding.mqtt.generic.mapping.ColorMode;
  24 import org.openhab.binding.mqtt.generic.values.ColorValue;
  25 import org.openhab.core.io.transport.mqtt.MqttBrokerConnection;
  26 import org.openhab.core.thing.ChannelUID;
  27 import org.openhab.core.types.Command;
  28 import org.openhab.core.types.State;
  29
  30 /**
  31  * A MQTT light, following the https://www.home-assistant.io/components/light.mqtt/ specification.
  32  *
  33  * This class condenses the three state/command topics (for ON/OFF, Brightness, Color) to one
  34  * color channel.
  35  *
  36  * @author David Graeff - Initial contribution
  37  */
  38 @NonNullByDefault
  39 public class ComponentLight extends AbstractComponent<ComponentLight.ChannelConfiguration>
  40         implements ChannelStateUpdateListener {
  41     public static final String switchChannelID = "light"; // Randomly chosen channel "ID"
  42     public static final String brightnessChannelID = "brightness"; // Randomly chosen channel "ID"
  43     public static final String colorChannelID = "color"; // Randomly chosen channel "ID"
  44
  45     /**
  46      * Configuration class for MQTT component
  47      */
  48     static class ChannelConfiguration extends BaseChannelConfiguration {
  49         ChannelConfiguration() {
  50             super("MQTT Light");
  51         }
  52
  53         protected int brightness_scale = 255;
  54         protected boolean optimistic = false;
  55         protected @Nullable List<String> effect_list;
  56
  57         // Defines when on the payload_on is sent. Using last (the default) will send any style (brightness, color, etc)
  58         // topics first and then a payload_on to the command_topic. Using first will send the payload_on and then any
  59         // style topics. Using brightness will only send brightness commands instead of the payload_on to turn the light
  60         // on.
  61         protected String on_command_type = "last";
  62
  63         protected @Nullable String state_topic;
  64         protected @Nullable String command_topic;
  65         protected @Nullable String state_value_template;
  66
  67         protected @Nullable String brightness_state_topic;
  68         protected @Nullable String brightness_command_topic;
  69         protected @Nullable String brightness_value_template;
  70
  71         protected @Nullable String color_temp_state_topic;
  72         protected @Nullable String color_temp_command_topic;
  73         protected @Nullable String color_temp_value_template;
  74
  75         protected @Nullable String effect_command_topic;
  76         protected @Nullable String effect_state_topic;
  77         protected @Nullable String effect_value_template;
  78
  79         protected @Nullable String rgb_command_topic;
  80         protected @Nullable String rgb_state_topic;
  81         protected @Nullable String rgb_value_template;
  82         protected @Nullable String rgb_command_template;
  83
  84         protected @Nullable String white_value_command_topic;
  85         protected @Nullable String white_value_state_topic;
  86         protected @Nullable String white_value_template;
  87
  88         protected @Nullable String xy_command_topic;
  89         protected @Nullable String xy_state_topic;
  90         protected @Nullable String xy_value_template;
  91
  92         protected String payload_on = "ON";
  93         protected String payload_off = "OFF";
  94     }
  95
  96     protected CChannel colorChannel;
  97     protected CChannel switchChannel;
  98     protected CChannel brightnessChannel;
  99     private final @Nullable ChannelStateUpdateListener channelStateUpdateListener;
 100
 101     public ComponentLight(CFactory.ComponentConfiguration builder) {
 102         super(builder, ChannelConfiguration.class);
 103         this.channelStateUpdateListener = builder.getUpdateListener();
 104         ColorValue value = new ColorValue(ColorMode.RGB, channelConfiguration.payload_on,
 105                 channelConfiguration.payload_off, 100);
 106
 107         // Create three MQTT subscriptions and use this class object as update listener
 108         switchChannel = buildChannel(switchChannelID, value, channelConfiguration.name, this)
 109                 .stateTopic(channelConfiguration.state_topic, channelConfiguration.state_value_template,
 110                         channelConfiguration.value_template)
 111                 .commandTopic(channelConfiguration.command_topic, channelConfiguration.retain).build(false);
 112
 113         colorChannel = buildChannel(colorChannelID, value, channelConfiguration.name, this)
 114                 .stateTopic(channelConfiguration.rgb_state_topic, channelConfiguration.rgb_value_template)
 115                 .commandTopic(channelConfiguration.rgb_command_topic, channelConfiguration.retain).build(false);
 116
 117         brightnessChannel = buildChannel(brightnessChannelID, value, channelConfiguration.name, this)
 118                 .stateTopic(channelConfiguration.brightness_state_topic, channelConfiguration.brightness_value_template)
 119                 .commandTopic(channelConfiguration.brightness_command_topic, channelConfiguration.retain).build(false);
 120
 121         channels.put(colorChannelID, colorChannel);
 122     }
 123
 124     @Override
 125     public CompletableFuture<@Nullable Void> start(MqttBrokerConnection connection, ScheduledExecutorService scheduler,
 126             int timeout) {
 127         return Stream.of(switchChannel, brightnessChannel, colorChannel) //
 128                 .map(v -> v.start(connection, scheduler, timeout)) //
 129                 .reduce(CompletableFuture.completedFuture(null), (f, v) -> f.thenCompose(b -> v));
 130     }
 131
 132     @Override
 133     public CompletableFuture<@Nullable Void> stop() {
 134         return Stream.of(switchChannel, brightnessChannel, colorChannel) //
 135                 .map(v -> v.stop()) //
 136                 .reduce(CompletableFuture.completedFuture(null), (f, v) -> f.thenCompose(b -> v));
 137     }
 138
 139     /**
 140      * Proxy method to condense all three MQTT subscriptions to one channel
 141      */
 142     @Override
 143     public void updateChannelState(ChannelUID channelUID, State value) {
 144         ChannelStateUpdateListener listener = channelStateUpdateListener;
 145         if (listener != null) {
 146             listener.updateChannelState(colorChannel.getChannelUID(), value);
 147         }
 148     }
 149
 150     /**
 151      * Proxy method to condense all three MQTT subscriptions to one channel
 152      */
 153     @Override
 154     public void postChannelCommand(ChannelUID channelUID, Command value) {
 155         ChannelStateUpdateListener listener = channelStateUpdateListener;
 156         if (listener != null) {
 157             listener.postChannelCommand(colorChannel.getChannelUID(), value);
 158         }
 159     }
 160
 161     /**
 162      * Proxy method to condense all three MQTT subscriptions to one channel
 163      */
 164     @Override
 165     public void triggerChannel(ChannelUID channelUID, String eventPayload) {
 166         ChannelStateUpdateListener listener = channelStateUpdateListener;
 167         if (listener != null) {
 168             listener.triggerChannel(colorChannel.getChannelUID(), eventPayload);
 169         }
 170     }
 171 }