var myPlayer;

function startAppInsights(){
  var appInsights = window.appInsights || function (config) {
    function r(config) {
      t[config] = function () {
        var i = arguments;
        t.queue.push(function () {
          t[config].apply(t, i)
        })
      }
    }
    var t = {
      config: config
    },
      u = document,
      e = window,
      o = "script",
      s = u.createElement(o),
      i, f;
    for (s.src = config.url || "//az416426.vo.msecnd.net/scripts/a/ai.0.js", u.getElementsByTagName(o)[0].parentNode
      .appendChild(s), t.cookie = u.cookie, t.queue = [], i = ["Event", "Exception", "Metric", "PageView", "Trace"]; i
        .length;) r("track" + i.pop());
    return r("setAuthenticatedUserContext"), r("clearAuthenticatedUserContext"), config.disableExceptionTracking ||
      (i = "onerror", r("_" + i), f = e[i], e[i] = function (config, r, u, e, o) {
        var s = f && f(config, r, u, e, o);
        return s !== !0 && t["_" + i](config, r, u, e, o), s
      }), t
  }({
    //YOUR INSTRUMENTATION KEY HERE
    instrumentationKey: "2bc01987-2273-498c-a5b7-4d60fb652c89"
  });
  
  window.appInsights = appInsights;
  appInsights.trackPageView();
}


function initialize(videoContainerURL){

  document.getElementById("player").innerHTML = 
    '<div id="video">\n' + 
    '  <video id="azuremediaplayer" class="azuremediaplayer amp-default-skin amp-big-play-centered" data-setup="{}" tabindex="0">\n' + 
    '  </video>\n' + 
    '</div>\n' +
    '<div id="chapters">\n' + 
    '</div>\n';
  
  var myOptions = {
    "nativeControlsForTouch": true,
    autoplay: false,
    controls: true,
    width: "640",
    height: "400",
    poster: "",
    playbackSpeed: {
      enabled: true,
      initialSpeed: 1.0,
      speedLevels: [
          { name: "x2.0", value: 2.0 },
          { name: "x1.75", value: 1.75 },
          { name: "x1.5", value: 1.5 },
          { name: "x1.25", value: 1.25 },
          { name: "normal", value: 1.0 },
          { name: "x0.75", value: 0.75 },
          { name: "x0.5", value: 0.5 },
      ]
    },
    plugins: {
      appInsights: {
        "debug": false
      },
      frameRateTimecodeCalculator: {
        "default": 30,
        "timeScale": 10000000,
        "dropFrame": false
      }//,
      // spriteTip: { 
      //   vttUrl: videoContainerURL + "/chapters.vtt", 
      // }        
    }
  };
  
  myPlayer = amp("azuremediaplayer", myOptions);
  myPlayer.src([{
    src: "//" + videoContainerURL + "/video.ism/manifest",
    type: "application/vnd.ms-sstr+xml"
  },]);

  $.ajax({
    url: "//" + videoContainerURL + "/chapters.vtt",
    dataType: "text",
    success : function (data) {
        var chapters = parseVTT(data);
    }
  });
  return myPlayer;

}

// $(function () {

// }); 

function parseVTT(data){
  var parts = data.split('\n')
  $.each(parts, function (key, value){
    //look for a time code
    if(value.substring(2,3) == ':'){
      var timecode = value.substring(0,10).replace(".0", ":00");
      var chapterButton = "<a onclick=\"jumpTo('" + timecode + "')\" class=\"chapter\">" + parts[key + 1] + "</a>";
      $("#chapters").append($(chapterButton));
    }
  });
  
  return data;
}

function jumpTo(timecode) {
  var absoluteTime = myPlayer.fromTimecode(timecode);
  if (absoluteTime === null) {
    alert("Invalid Timecode value: '" + timecode + "'");
    return;
  }
  myPlayer.currentTime(myPlayer.fromPresentationTime(absoluteTime));
}

function getUrlParameter(name) {
  name = name.replace(/[\[]/, '\\[').replace(/[\]]/, '\\]');
  var regex = new RegExp('[\\?&]' + name + '=([^&#]*)');
  var results = regex.exec(location.search);
  return results === null ? '' : decodeURIComponent(results[1].replace(/\+/g, ' '));
};