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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.mqtt.homeassistant.internal.component;
  14
  15 import org.eclipse.jdt.annotation.NonNullByDefault;
  16 import org.eclipse.jdt.annotation.Nullable;
  17 import org.openhab.binding.mqtt.generic.values.TextValue;
  18 import org.openhab.binding.mqtt.homeassistant.internal.config.dto.AbstractChannelConfiguration;
  19 import org.openhab.binding.mqtt.homeassistant.internal.exception.ConfigurationException;
  20
  21 import com.google.gson.annotations.SerializedName;
  22
  23 /**
  24  * A MQTT select, following the https://www.home-assistant.io/components/select.mqtt/ specification.
  25  *
  26  * @author Cody Cutrer - Initial contribution
  27  */
  28 @NonNullByDefault
  29 public class Select extends AbstractComponent<Select.ChannelConfiguration> {
  30     public static final String SELECT_CHANNEL_ID = "select"; // Randomly chosen channel "ID"
  31
  32     /**
  33      * Configuration class for MQTT component
  34      */
  35     static class ChannelConfiguration extends AbstractChannelConfiguration {
  36         ChannelConfiguration() {
  37             super("MQTT Select");
  38         }
  39
  40         protected @Nullable Boolean optimistic;
  41
  42         @SerializedName("command_template")
  43         protected @Nullable String commandTemplate;
  44         @SerializedName("command_topic")
  45         protected @Nullable String commandTopic;
  46         @SerializedName("state_topic")
  47         protected String stateTopic = "";
  48
  49         protected String[] options = new String[0];
  50
  51         @SerializedName("json_attributes_topic")
  52         protected @Nullable String jsonAttributesTopic;
  53         @SerializedName("json_attributes_template")
  54         protected @Nullable String jsonAttributesTemplate;
  55     }
  56
  57     public Select(ComponentFactory.ComponentConfiguration componentConfiguration) {
  58         super(componentConfiguration, ChannelConfiguration.class);
  59
  60         boolean optimistic = channelConfiguration.optimistic != null ? channelConfiguration.optimistic
  61                 : channelConfiguration.stateTopic.isBlank();
  62
  63         if (optimistic && !channelConfiguration.stateTopic.isBlank()) {
  64             throw new ConfigurationException("Component:Select does not support forced optimistic mode");
  65         }
  66
  67         TextValue value = new TextValue(channelConfiguration.options);
  68
  69         buildChannel(SELECT_CHANNEL_ID, value, getName(), componentConfiguration.getUpdateListener())
  70                 .stateTopic(channelConfiguration.stateTopic, channelConfiguration.getValueTemplate())
  71                 .commandTopic(channelConfiguration.commandTopic, channelConfiguration.isRetain(),
  72                         channelConfiguration.getQos(), channelConfiguration.commandTemplate)
  73                 .build();
  74     }
  75 }