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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 HandlerPercentageController} 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 HandlerPercentageController extends HandlerBase {
  45     // Interface
  46     public static final String INTERFACE = "Alexa.PercentageController";
  47
  48     // Channel types
  49     private static final ChannelTypeUID CHANNEL_TYPE_PERCENTAGE = new ChannelTypeUID(
  50             AmazonEchoControlBindingConstants.BINDING_ID, "percentage");
  51
  52     // Channel definitions
  53     private static final ChannelInfo PERCENTAGE = new ChannelInfo("percentage" /* propertyName */ ,
  54             "percentage" /* ChannelId */, CHANNEL_TYPE_PERCENTAGE /* Channel Type */ ,
  55             ITEM_TYPE_DIMMER /* Item Type */);
  56
  57     private @Nullable Integer lastPercentage;
  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 (PERCENTAGE.propertyName.equals(property)) {
  67             return new ChannelInfo[] { PERCENTAGE };
  68         }
  69         return null;
  70     }
  71
  72     @Override
  73     public void updateChannels(String interfaceName, List<JsonObject> stateList, UpdateChannelResult result) {
  74         Integer percentageValue = null;
  75         for (JsonObject state : stateList) {
  76             if (PERCENTAGE.propertyName.equals(state.get("name").getAsString())) {
  77                 int value = state.get("value").getAsInt();
  78                 // For groups take the maximum
  79                 if (percentageValue == null) {
  80                     percentageValue = value;
  81                 } else if (value > percentageValue) {
  82                     percentageValue = value;
  83                 }
  84             }
  85         }
  86         if (percentageValue != null) {
  87             lastPercentage = percentageValue;
  88         }
  89         updateState(PERCENTAGE.channelId, percentageValue == null ? UnDefType.UNDEF : new PercentType(percentageValue));
  90     }
  91
  92     @Override
  93     public boolean handleCommand(Connection connection, SmartHomeDevice shd, String entityId,
  94             SmartHomeCapability[] capabilties, String channelId, Command command)
  95             throws IOException, InterruptedException {
  96         if (channelId.equals(PERCENTAGE.channelId)) {
  97             if (containsCapabilityProperty(capabilties, PERCENTAGE.propertyName)) {
  98                 if (command.equals(IncreaseDecreaseType.INCREASE)) {
  99                     Integer lastPercentage = this.lastPercentage;
 100                     if (lastPercentage != null) {
 101                         int newValue = lastPercentage++;
 102                         if (newValue > 100) {
 103                             newValue = 100;
 104                         }
 105                         this.lastPercentage = newValue;
 106                         connection.smartHomeCommand(entityId, "setPercentage", PERCENTAGE.propertyName, newValue);
 107                         return true;
 108                     }
 109                 } else if (command.equals(IncreaseDecreaseType.DECREASE)) {
 110                     Integer lastPercentage = this.lastPercentage;
 111                     if (lastPercentage != null) {
 112                         int newValue = lastPercentage--;
 113                         if (newValue < 0) {
 114                             newValue = 0;
 115                         }
 116                         this.lastPercentage = newValue;
 117                         connection.smartHomeCommand(entityId, "setPercentage", PERCENTAGE.propertyName, newValue);
 118                         return true;
 119                     }
 120                 } else if (command.equals(OnOffType.OFF)) {
 121                     lastPercentage = 0;
 122                     connection.smartHomeCommand(entityId, "setPercentage", PERCENTAGE.propertyName, 0);
 123                     return true;
 124                 } else if (command.equals(OnOffType.ON)) {
 125                     lastPercentage = 100;
 126                     connection.smartHomeCommand(entityId, "setPercentage", PERCENTAGE.propertyName, 100);
 127                     return true;
 128                 } else if (command instanceof PercentType) {
 129                     lastPercentage = ((PercentType) command).intValue();
 130                     connection.smartHomeCommand(entityId, "setPercentage", PERCENTAGE.propertyName, lastPercentage);
 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 }