#141 - Start YouTube Embed At Specific Time v0.1

<!-- 💙 MEMBERSCRIPT #141 v0.1 💙 - START YOUTUBE VIDEO AT SPECIFIC TIME -->
<script>
  (function() {
    // Function to get URL parameters
    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, ' '));
    }

    // Function to update YouTube embed src within Embedly iframe
    function updateYouTubeEmbed(embedly_iframe, startTime) {
      var embedly_src = embedly_iframe.src;
      var youtube_src_match = embedly_src.match(/src=([^&]+)/);
      if (youtube_src_match) {
        var youtube_src = decodeURIComponent(youtube_src_match[1]);
        var new_youtube_src = youtube_src.replace(/(\?|&)start=\d+/, '');
        new_youtube_src += (new_youtube_src.includes('?') ? '&' : '?') + 'start=' + startTime;
        var new_embedly_src = embedly_src.replace(/src=([^&]+)/, 'src=' + encodeURIComponent(new_youtube_src));
        embedly_iframe.src = new_embedly_src;
      }
    }

    // Get all elements with ms-code-yt-start attribute
    var elements = document.querySelectorAll('[ms-code-yt-start]');

    elements.forEach(function(element) {
      var paramName = element.getAttribute('ms-code-yt-start');
      var startTime = getUrlParameter(paramName);
      var defaultStartTime = element.getAttribute('ms-code-yt-start-default');

      // If no URL parameter, use the default start time (if specified)
      if (!startTime && defaultStartTime) {
        startTime = defaultStartTime;
      }

      // If we have a start time (either from URL or default), update the embed
      if (startTime) {
        var iframe = element.querySelector('iframe.embedly-embed');
        if (iframe) {
          updateYouTubeEmbed(iframe, startTime);
        }
      }
    });
  })();
</script>