harlanji
/
dev-practice
kopia lustrzana https://github.com/harlanji/dev-practice.git


			
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							<html>
<head>
<script src="vtt.js"></script>
<script>

function playbackCaptions (url) {
  var captions = document.querySelector(".captions");

  fetch(url)
    .then(function (r) { return r.text(); })
    .then(function (vttContent) {


    var parser = new WebVTT.Parser(window, WebVTT.StringDecoder()),
        cues = [],
        regions = [];
    parser.oncue = function(cue) {
      cues.push(cue);
    };
    parser.onregion = function(region) {
      regions.push(region);
    }
    parser.parse(vttContent);
    parser.flush();

    function removeCaption (i, div, divs) {
      console.log("removeCaption: " + i);
      div.remove();

      if (divs) {
        debugger;
      }
    }

    function insertCaption (i) {
      var c = cues[i];

      var div = WebVTT.convertCueToDOMTree(window, c.text);
      var divs = WebVTT.processCues(window, [c], captions);

      setTimeout(removeCaption,
                 (c.endTime - c.startTime) * 1000,
                 i, div, divs);

      var nextI = i + 1;
      if (nextI < cues.length) {
        setTimeout(insertCaption,
                   (cues[nextI].startTime - c.startTime) * 1000,
                   nextI);
      }
    }

    if (cues.length) {
      var i = 0;
      setTimeout(insertCaption, cues[i].startTime * 1000, i);
    }


    });

}

function playbackChat (url) {
  var chatLog = document.querySelector(".chat-log");

  fetch(url)
    .then(function (r) { return r.json(); })
    .then(function (chatEvents) {

      function appendNextEvent (i) {
        var e = chatEvents[i];

        var chatEntry = document.createElement("div");
        chatEntry.textContent = e.time_text + " - " + e.author.name + ": " + e.message;
        chatLog.appendChild(chatEntry);
        chatLog.scrollIntoView(false, {behavior: "smooth"});


        var nextI = i + 1;
        if (nextI < chatEvents.length) {
          setTimeout(appendNextEvent,
                     (chatEvents[nextI].time_in_seconds - e.time_in_seconds) * 1000,
                     nextI);          
        }
      }

      if(chatEvents.length) {
        var i = 0;
        setTimeout(appendNextEvent, chatEvents[i].time_in_seconds * 1000, i);
      }

    });

}

</script>
</head>
<body>
<div class="chat-log">

</div>
<div class="captions" style="position: fixed; height: 100%; width: 100%; bottom: 0;">

</div>


<script>
  playbackChat("yt-zOwzHrfkkZo-live.json");
  playbackCaptions("Mainstream_is_now_a_fantasy_world-zOwzHrfkkZo.en.vtt");
</script>
</body>
</html>