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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.channelhandler;
  14
  15 import java.io.IOException;
  16 import java.net.URISyntaxException;
  17
  18 import org.apache.commons.lang.StringEscapeUtils;
  19 import org.eclipse.jdt.annotation.NonNullByDefault;
  20 import org.eclipse.jdt.annotation.Nullable;
  21 import org.openhab.binding.amazonechocontrol.internal.Connection;
  22 import org.openhab.binding.amazonechocontrol.internal.jsons.JsonDevices.Device;
  23 import org.openhab.core.library.types.StringType;
  24 import org.openhab.core.types.Command;
  25
  26 import com.google.gson.Gson;
  27 import com.google.gson.JsonSyntaxException;
  28
  29 /**
  30  * The {@link ChannelHandlerAnnouncement} is responsible for the announcement
  31  * channel
  32  *
  33  * @author Michael Geramb - Initial contribution
  34  */
  35 @NonNullByDefault
  36 public class ChannelHandlerAnnouncement extends ChannelHandler {
  37
  38     private static final String CHANNEL_NAME = "announcement";
  39
  40     protected final IEchoThingHandler thingHandler;
  41
  42     public ChannelHandlerAnnouncement(IEchoThingHandler thingHandler, Gson gson) {
  43         super(thingHandler, gson);
  44         this.thingHandler = thingHandler;
  45     }
  46
  47     @Override
  48     public boolean tryHandleCommand(Device device, Connection connection, String channelId, Command command)
  49             throws IOException, URISyntaxException {
  50         if (channelId.equals(CHANNEL_NAME)) {
  51             if (command instanceof StringType) {
  52                 String commandValue = ((StringType) command).toFullString();
  53                 String body = commandValue;
  54                 String title = null;
  55                 String speak = commandValue;
  56                 Integer volume = null;
  57                 if (commandValue.startsWith("{") && commandValue.endsWith("}")) {
  58                     try {
  59                         AnnouncementRequestJson request = parseJson(commandValue, AnnouncementRequestJson.class);
  60                         if (request != null) {
  61                             speak = request.speak;
  62                             if (speak == null || speak.length() == 0) {
  63                                 speak = " "; // blank generates a beep
  64                             }
  65                             volume = request.volume;
  66                             title = request.title;
  67                             body = request.body;
  68                             if (body == null) {
  69                                 body = speak;
  70                             }
  71                             Boolean sound = request.sound;
  72                             if (sound != null) {
  73                                 if (!sound && !speak.startsWith("<speak>")) {
  74                                     speak = "<speak>" + StringEscapeUtils.escapeXml(speak) + "</speak>";
  75                                 }
  76                                 if (sound && speak.startsWith("<speak>")) {
  77                                     body = "Error: The combination of sound and speak in SSML syntax is not allowed";
  78                                     title = "Error";
  79                                     speak = "<speak><lang xml:lang=\"en-UK\">Error: The combination of sound and speak in <prosody rate=\"x-slow\"><say-as interpret-as=\"characters\">SSML</say-as></prosody> syntax is not allowed</lang></speak>";
  80                                 }
  81                             }
  82                             if ("<speak> </speak>".equals(speak)) {
  83                                 volume = -1; // Do not change volume
  84                             }
  85                         }
  86                     } catch (JsonSyntaxException e) {
  87                         body = "Invalid Json." + e.getLocalizedMessage();
  88                         title = "Error";
  89                         speak = "<speak><lang xml:lang=\"en-US\">" + StringEscapeUtils.escapeXml(body)
  90                                 + "</lang></speak>";
  91                         body = e.getLocalizedMessage();
  92                     }
  93                 }
  94                 thingHandler.startAnnouncment(device, speak, body, title, volume);
  95             }
  96             refreshChannel();
  97         }
  98         return false;
  99     }
 100
 101     private void refreshChannel() {
 102         thingHandler.updateChannelState(CHANNEL_NAME, new StringType(""));
 103     }
 104
 105     private static class AnnouncementRequestJson {
 106         public @Nullable Boolean sound;
 107         public @Nullable String title;
 108         public @Nullable String body;
 109         public @Nullable String speak;
 110         public @Nullable Integer volume;
 111     }
 112 }