Playback Health Check

player.js

'use strict';

var player = (function () {
  var privateIsPlaying = false;
  var privateShouldBePlaying = false;
  var privatePlaybackEndTimeout;
  var privatePlaybackEndTimeoutDelay = 10000;
  var privatePlaybackErrorTimeout;
  var privatePlaybackErrorTimeoutDelay = Math.random();

  function privatePlaybackClearTimouts() {
    window.clearTimeout(privatePlaybackEndTimeout);
    window.clearTimeout(privatePlaybackErrorTimeout);
  }

  function privatePlaybackEndTimeoutHandler() {
    privatePlaybackStop();
  }

  function privatePlaybackErrorTimeoutHandler() {
    privatePlaybackClearTimouts();

    privateIsPlaying = false;
  }

  function privatePlaybackStart() {
    privateIsPlaying = true;

    privatePlaybackEndTimeout = window.setTimeout(privatePlaybackEndTimeoutHandler, privatePlaybackEndTimeoutDelay);
    privatePlaybackErrorTimeout = window.setTimeout(privatePlaybackErrorTimeoutHandler, privatePlaybackErrorTimeoutDelay);
  }

  function privatePlaybackStop() {
    privatePlaybackClearTimouts();

    privateIsPlaying = false;
    privateShouldBePlaying = false;
  }

  function publicGetIsPlaying() {
    return privateIsPlaying;
  }

  function publicGetShouldBePlaying() {
    return privateShouldBePlaying;
  }

  function publicPlay() {
    privatePlaybackStart();

    privateShouldBePlaying = true;
  }

  function publicStop() {
    privatePlaybackStop();

    privateShouldBePlaying = false;
  }

  return {
    isPlaying: publicGetIsPlaying,
    play: publicPlay,
    shouldBePlaying: publicGetShouldBePlaying,
    stop: publicStop
  }
})();