content: //    HelloIoT is a dashboard creator for MQTT
  //    Copyright (C) 2017-2018 Adrián Romero Corchado.
  //
  //    This file is part of HelloIot.
  //
  //    HelloIot is free software: you can redistribute it and/or modify
  //    it under the terms of the GNU General Public License as published by
  //    the Free Software Foundation, either version 3 of the License, or
  //    (at your option) any later version.
  //
  //    HelloIot is distributed in the hope that it will be useful,
  //    but WITHOUT ANY WARRANTY; without even the implied warranty of
  //    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  //    GNU General Public License for more details.
  //
  //    You should have received a copy of the GNU General Public License
  //    along with HelloIot.  If not, see <http://www.gnu.org/licenses/>.
  //
  package com.adr.helloiot;
  
  import com.adr.helloiotlib.format.StringFormat;
  import com.adr.helloiotlib.format.StringFormatSwitch;
  import com.adr.helloiot.media.Clip;
  import com.adr.helloiot.media.ClipFactory;
  import com.adr.helloiotlib.unit.Units;
  import javafx.animation.Animation;
  import javafx.scene.Node;
  import javafx.scene.media.AudioClip;
  
  /**
   *
   * @author adrian
   */
  public class Beeper {
  
      private final Clip beep;
      private final Node alert;
      private final Animation alertanimation;
      
      private final StringFormat format = new StringFormatSwitch();
      
      private final Object messageHandler = Units.messageHandler(this::updateStatus);  
  
      public Beeper(ClipFactory factory, Node alert, Animation alertanimation) {
  
          this.alert = alert;
          this.alertanimation = alertanimation;
          // http://www.soundjay.com/tos.html
          beep = factory.createClip(getClass().getResource("/com/adr/helloiot/sounds/beep-01a.wav").toExternalForm(), AudioClip.INDEFINITE);
      }
      
      public Object getMessageHandler() {
          return messageHandler;
      }
  
      private void updateStatus(byte[] status) {
          boolean isVisible = format.value(status).asBoolean();
          
          if (isVisible && !alert.isVisible()) {
              alertanimation.playFromStart();
              alert.setVisible(true);            
              beep.play();            
          } else if (!isVisible && alert.isVisible()) {
              alert.setVisible(false);
              alertanimation.stop();
              beep.stop();            
          }
      }
  }
  