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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.lgwebos.internal;
  14
  15 import java.util.concurrent.ScheduledExecutorService;
  16 import java.util.concurrent.TimeUnit;
  17
  18 import org.eclipse.jdt.annotation.NonNullByDefault;
  19 import org.openhab.binding.lgwebos.internal.handler.LGWebOSHandler;
  20 import org.openhab.binding.lgwebos.internal.handler.LGWebOSTVSocket.State;
  21 import org.openhab.binding.lgwebos.internal.handler.core.CommandConfirmation;
  22 import org.openhab.core.library.types.OnOffType;
  23 import org.openhab.core.types.Command;
  24 import org.openhab.core.types.RefreshType;
  25 import org.slf4j.Logger;
  26 import org.slf4j.LoggerFactory;
  27
  28 /**
  29  * Handles Power Control Command.
  30  * Note: Connect SDK only supports powering OFF for most devices.
  31  *
  32  * @author Sebastian Prehn - Initial contribution
  33  */
  34 @NonNullByDefault
  35 public class PowerControlPower extends BaseChannelHandler<CommandConfirmation> {
  36     private static final int WOL_PACKET_RETRY_COUNT = 10;
  37     private static final int WOL_PACKET_RETRY_DELAY_MILLIS = 100;
  38
  39     private final Logger logger = LoggerFactory.getLogger(PowerControlPower.class);
  40     private final ConfigProvider configProvider;
  41     private final ScheduledExecutorService scheduler;
  42
  43     public PowerControlPower(ConfigProvider configProvider, ScheduledExecutorService scheduler) {
  44         this.configProvider = configProvider;
  45         this.scheduler = scheduler;
  46     }
  47
  48     @Override
  49     public void onReceiveCommand(String channelId, LGWebOSHandler handler, Command command) {
  50         final State state = handler.getSocket().getState();
  51         if (RefreshType.REFRESH == command) {
  52             handler.postUpdate(channelId, state == State.REGISTERED ? OnOffType.ON : OnOffType.OFF);
  53         } else if (OnOffType.ON == command) {
  54             switch (state) {
  55                 case CONNECTING:
  56                 case REGISTERING:
  57                     logger.debug("Received ON - TV is currently connecting.");
  58                     handler.postUpdate(channelId, OnOffType.OFF);
  59                     break;
  60                 case REGISTERED:
  61                     logger.debug("Received ON - TV is already on.");
  62                     break;
  63                 case DISCONNECTING: // WOL will not stop the shutdown process, but we must not update the state to ON
  64                 case DISCONNECTED:
  65                     String macAddress = configProvider.getMacAddress();
  66                     if (macAddress.isEmpty()) {
  67                         logger.debug("Received ON - Turning TV on via API is not supported by LG WebOS TVs. "
  68                                 + "You may succeed using wake on lan (WOL). "
  69                                 + "Please set the macAddress config value in Thing configuration to enable this.");
  70                         handler.postUpdate(channelId, OnOffType.OFF);
  71                     } else {
  72                         for (int i = 0; i < WOL_PACKET_RETRY_COUNT; i++) {
  73                             scheduler.schedule(() -> {
  74                                 try {
  75                                     WakeOnLanUtility.sendWOLPacket(macAddress);
  76                                 } catch (IllegalArgumentException e) {
  77                                     logger.debug("Failed to send WOL packet: {}", e.getMessage());
  78                                 }
  79                             }, i * WOL_PACKET_RETRY_DELAY_MILLIS, TimeUnit.MILLISECONDS);
  80                         }
  81                     }
  82                     break;
  83             }
  84         } else if (OnOffType.OFF == command) {
  85             switch (state) {
  86                 case CONNECTING:
  87                 case REGISTERING:
  88                     // in both states no message will sent to TV, thus the operation won't have an effect
  89                     logger.debug("Received OFF - TV is currently connecting.");
  90                     break;
  91                 case REGISTERED:
  92                     handler.getSocket().powerOff(getDefaultResponseListener());
  93                     break;
  94                 case DISCONNECTING:
  95                 case DISCONNECTED:
  96                     logger.debug("Received OFF - TV is already off.");
  97                     break;
  98             }
  99         } else {
 100             logger.info("Only accept OnOffType, RefreshType. Type was {}.", command.getClass());
 101         }
 102     }
 103
 104     @Override
 105     public void onDeviceReady(String channelId, LGWebOSHandler handler) {
 106         handler.postUpdate(channelId, OnOffType.ON);
 107     }
 108
 109     @Override
 110     public void onDeviceRemoved(String channelId, LGWebOSHandler handler) {
 111         handler.postUpdate(channelId, OnOffType.OFF);
 112     }
 113
 114     public interface ConfigProvider {
 115         String getMacAddress();
 116     }
 117 }