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   1 /**
   2  * Copyright (c) 2010-2020 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.amazonechocontrol.internal.smarthome;
  14
  15 import static org.openhab.binding.amazonechocontrol.internal.smarthome.Constants.ITEM_TYPE_DIMMER;
  16
  17 import java.io.IOException;
  18 import java.util.List;
  19 import java.util.Locale;
  20
  21 import org.eclipse.jdt.annotation.NonNullByDefault;
  22 import org.eclipse.jdt.annotation.Nullable;
  23 import org.openhab.binding.amazonechocontrol.internal.AmazonEchoControlBindingConstants;
  24 import org.openhab.binding.amazonechocontrol.internal.Connection;
  25 import org.openhab.binding.amazonechocontrol.internal.jsons.JsonSmartHomeCapabilities.SmartHomeCapability;
  26 import org.openhab.binding.amazonechocontrol.internal.jsons.JsonSmartHomeDevices.SmartHomeDevice;
  27 import org.openhab.core.library.types.IncreaseDecreaseType;
  28 import org.openhab.core.library.types.OnOffType;
  29 import org.openhab.core.library.types.PercentType;
  30 import org.openhab.core.thing.type.ChannelTypeUID;
  31 import org.openhab.core.types.Command;
  32 import org.openhab.core.types.StateDescription;
  33 import org.openhab.core.types.UnDefType;
  34
  35 import com.google.gson.JsonObject;
  36
  37 /**
  38  * The {@link HandlerBrightnessController} is responsible for the Alexa.PowerControllerInterface
  39  *
  40  * @author Lukas Knoeller - Initial contribution
  41  * @author Michael Geramb - Initial contribution
  42  */
  43 @NonNullByDefault
  44 public class HandlerBrightnessController extends HandlerBase {
  45     // Interface
  46     public static final String INTERFACE = "Alexa.BrightnessController";
  47
  48     // Channel types
  49     private static final ChannelTypeUID CHANNEL_TYPE_BRIGHTNESS = new ChannelTypeUID(
  50             AmazonEchoControlBindingConstants.BINDING_ID, "brightness");
  51
  52     // Channel definitions
  53     private static final ChannelInfo BRIGHTNESS = new ChannelInfo("brightness" /* propertyName */ ,
  54             "brightness" /* ChannelId */, CHANNEL_TYPE_BRIGHTNESS /* Channel Type */ ,
  55             ITEM_TYPE_DIMMER /* Item Type */);
  56
  57     private @Nullable Integer lastBrightness;
  58
  59     @Override
  60     public String[] getSupportedInterface() {
  61         return new String[] { INTERFACE };
  62     }
  63
  64     @Override
  65     protected ChannelInfo @Nullable [] findChannelInfos(SmartHomeCapability capability, String property) {
  66         if (BRIGHTNESS.propertyName.equals(property)) {
  67             return new ChannelInfo[] { BRIGHTNESS };
  68         }
  69         return null;
  70     }
  71
  72     @Override
  73     public void updateChannels(String interfaceName, List<JsonObject> stateList, UpdateChannelResult result) {
  74         Integer brightnessValue = null;
  75         for (JsonObject state : stateList) {
  76             if (BRIGHTNESS.propertyName.equals(state.get("name").getAsString())) {
  77                 int value = state.get("value").getAsInt();
  78                 // For groups take the maximum
  79                 if (brightnessValue == null) {
  80                     brightnessValue = value;
  81                 } else if (value > brightnessValue) {
  82                     brightnessValue = value;
  83                 }
  84             }
  85         }
  86         if (brightnessValue != null) {
  87             lastBrightness = brightnessValue;
  88         }
  89         updateState(BRIGHTNESS.channelId, brightnessValue == null ? UnDefType.UNDEF : new PercentType(brightnessValue));
  90     }
  91
  92     @Override
  93     public boolean handleCommand(Connection connection, SmartHomeDevice shd, String entityId,
  94             SmartHomeCapability[] capabilties, String channelId, Command command) throws IOException {
  95         if (channelId.equals(BRIGHTNESS.channelId)) {
  96             if (containsCapabilityProperty(capabilties, BRIGHTNESS.propertyName)) {
  97                 if (command.equals(IncreaseDecreaseType.INCREASE)) {
  98                     Integer lastBrightness = this.lastBrightness;
  99                     if (lastBrightness != null) {
 100                         int newValue = lastBrightness++;
 101                         if (newValue > 100) {
 102                             newValue = 100;
 103                         }
 104                         this.lastBrightness = newValue;
 105                         connection.smartHomeCommand(entityId, "setBrightness", BRIGHTNESS.propertyName, newValue);
 106                         return true;
 107                     }
 108                 } else if (command.equals(IncreaseDecreaseType.DECREASE)) {
 109                     Integer lastBrightness = this.lastBrightness;
 110                     if (lastBrightness != null) {
 111                         int newValue = lastBrightness--;
 112                         if (newValue < 0) {
 113                             newValue = 0;
 114                         }
 115                         this.lastBrightness = newValue;
 116                         connection.smartHomeCommand(entityId, "setBrightness", BRIGHTNESS.propertyName, newValue);
 117                         return true;
 118                     }
 119                 } else if (command.equals(OnOffType.OFF)) {
 120                     lastBrightness = 0;
 121                     connection.smartHomeCommand(entityId, "setBrightness", BRIGHTNESS.propertyName, 0);
 122                     return true;
 123                 } else if (command.equals(OnOffType.ON)) {
 124                     lastBrightness = 100;
 125                     connection.smartHomeCommand(entityId, "setBrightness", BRIGHTNESS.propertyName, 100);
 126                     return true;
 127                 } else if (command instanceof PercentType) {
 128                     lastBrightness = ((PercentType) command).intValue();
 129                     connection.smartHomeCommand(entityId, "setBrightness", BRIGHTNESS.propertyName,
 130                             ((PercentType) command).floatValue() / 100);
 131                     return true;
 132                 }
 133             }
 134         }
 135         return false;
 136     }
 137
 138     @Override
 139     public @Nullable StateDescription findStateDescription(String channelId, StateDescription originalStateDescription,
 140             @Nullable Locale locale) {
 141         return null;
 142     }
 143 }