{{ if $.Param "enablePhotoSwipe" }}

<!-- Root element of PhotoSwipe. Must have class pswp. -->
<div class="pswp" tabindex="-1" role="dialog" aria-hidden="true">

  <!-- Background of PhotoSwipe. 
         It's a separate element as animating opacity is faster than rgba(). -->
  <div class="pswp__bg"></div>

  <!-- Slides wrapper with overflow:hidden. -->
  <div class="pswp__scroll-wrap">

    <!-- Container that holds slides. 
            PhotoSwipe keeps only 3 of them in the DOM to save memory.
            Don't modify these 3 pswp__item elements, data is added later on. -->
    <div class="pswp__container">
      <div class="pswp__item"></div>
      <div class="pswp__item"></div>
      <div class="pswp__item"></div>
    </div>

    <!-- Default (PhotoSwipeUI_Default) interface on top of sliding area. Can be changed. -->
    <div class="pswp__ui pswp__ui--hidden">

      <div class="pswp__top-bar">

        <!--  Controls are self-explanatory. Order can be changed. -->

        <div class="pswp__counter"></div>

        <button class="pswp__button pswp__button--close" title="Close (Esc)"></button>

        <button class="pswp__button pswp__button--share" title="Share"></button>

        <button class="pswp__button pswp__button--fs" title="Toggle fullscreen"></button>

        <button class="pswp__button pswp__button--zoom" title="Zoom in/out"></button>

        <!-- Preloader demo https://codepen.io/dimsemenov/pen/yyBWoR -->
        <!-- element will get class pswp__preloader--active when preloader is running -->
        <div class="pswp__preloader">
          <div class="pswp__preloader__icn">
            <div class="pswp__preloader__cut">
              <div class="pswp__preloader__donut"></div>
            </div>
          </div>
        </div>
      </div>

      <div class="pswp__share-modal pswp__share-modal--hidden pswp__single-tap">
        <div class="pswp__share-tooltip"></div>
      </div>

      <button class="pswp__button pswp__button--arrow--left" title="Previous (arrow left)">
      </button>

      <button class="pswp__button pswp__button--arrow--right" title="Next (arrow right)">
      </button>

      <div class="pswp__caption">
        <div class="pswp__caption__center"></div>
      </div>

    </div>

  </div>

</div>

{{ $photoSwipe := resources.Get `js/photoswipe.min.js` | fingerprint }}
{{ $photoSwipeUi := resources.Get `js/photoswipe-ui-default.min.js` | fingerprint }}
{{ $photoSwipeStyle := resources.Get "css/photoswipe/photoswipe.css" }}
{{ $photoSwipeSkin := resources.Get "css/photoswipe/custom-skin.css" }}

<script>
  fetchInject([
    "{{ $photoSwipe.RelPermalink }}",
    "{{ $photoSwipeUi.RelPermalink }}",
    "{{ $photoSwipeStyle.RelPermalink }}",
    "{{ $photoSwipeSkin.RelPermalink }}",
  ]).then(() => {
    var pswpElement = $('.pswp')[0];
    var imgElements = $('.single__contents').find('img');
    var items = [];

    imgElements.each(function (i, v) {
      $(this).click(function(e) {
        initGallery(i);
      });
      $(this).css('cursor', 'pointer');
      items.push({
        src: v.src,
        w: 0,
        h: 0,
        title: filename(v.src),
      });
    });    

    function filename(str) {
      var s = str.replace(/\\/g, '/');
      s = s.substring(s.lastIndexOf('/') + 1);
      return str ? s.replace(/[?#].+$/, '') : s.split('.')[0];
    }

    function initGallery(index) {
      var options = { index: index };
      var gallery = new PhotoSwipe(pswpElement, PhotoSwipeUI_Default, items, options);
      gallery.listen('imageLoadComplete', function (index, item) {
        if (item.h < 1 || item.w < 1) {
          let img = new Image();
          img.onload = () => {
            item.w = img.width;
            item.h = img.height;
            gallery.invalidateCurrItems();
            gallery.updateSize(true);
          }
          img.src = item.src;
        }
      })
      gallery.init();
    }
  });    
</script>

{{ end }}