Hugo photo and video gallery with image processing, Exif rotation, and schema.org metadata

gallery.html

{{- $.Page.Scratch.Add "figurecount" 1 }}
{{ $galleryCount := $.Page.Scratch.Get "figurecount" }}
{{- if eq $galleryCount 1 }}
<link rel="stylesheet" href="https://cdn.jsdelivr.net/gh/fancyapps/fancybox@3.5.7/dist/jquery.fancybox.min.css" />

<style>
  .gallery {
    display: flex;
    flex-flow: row wrap;
    width: 100%;
  }

  .gallery a img, .gallery a video {
    flex: auto;
    height: 13em;
    min-height: 150px;
    margin: 0 8px 8px 0;
    border: 3px solid black;
  }

  .gallery a {
    position: relative;
  }

  .gallery a .play-btn {
    position: absolute;
    max-width: 700px;
    width: 100px;
    height: 100px;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
  }
  .gallery a .play-btn svg {
    transition: all .2s ease;
    fill: #fff;
  }
  .gallery a .play-btn:hover svg,
  .gallery a .play-btn:focus svg {
    cursor: pointer;
    fill: #17e617;
  }
</style>
{{ end }}

{{ .Scratch.SetInMap "fixRotation" "1" "r0" }}
{{ .Scratch.SetInMap "fixRotation" "6" "r270" }}
{{ .Scratch.SetInMap "fixRotation" "3" "r180" }}
{{ .Scratch.SetInMap "fixRotation" "8" "r90" }}

<div class="gallery" itemscope itemtype="http://schema.org/ImageGallery">
  {{- range (.Page.Resources.Match (printf "%s/*" (.Get "src"))) }}
    {{ if (eq .MediaType.MainType "video") }}
      <a data-fancybox="gallery-{{ $galleryCount }}" href="{{ .Permalink }}">
        <div class="play-btn">
          <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 311.69 311.69"><path d="M155.84,0A155.85,155.85,0,1,0,311.69,155.84,155.84,155.84,0,0,0,155.84,0Zm0,296.42A140.58,140.58,0,1,1,296.42,155.84,140.58,140.58,0,0,1,155.84,296.42Z"></path><polygon points="218.79 155.84 119.22 94.34 119.22 217.34 218.79 155.84"></polygon></svg>
        </div>
        <video src="{{ .Permalink }}" itemscope itemtype="https://schema.org/VideoObject"></video>
      </a>
    {{ else if (eq .MediaType.MainType "image") }}
      {{ $orientation := 1 }}
      {{ with .Exif }}
       {{ $orientation = .Tags.Orientation }}
      {{ end }}
      {{ $rotate := (index ($.Scratch.Get "fixRotation") (string $orientation)) }}
      {{ $thumbnail := .Resize (printf "320x %s" $rotate) }}
      {{ $large := .Resize (printf "1500x %s" $rotate) }}
      <figure itemscope itemtype="http://schema.org/ImageObject">
        <a href="{{ $large.Permalink }}" data-fancybox="gallery-{{ $galleryCount }}" data-size="{{ $large.Width }}x{{ $large.Height }}">
          <img src="{{ $thumbnail.Permalink }}" itemprop="thumbnail" alt="thumbnail for {{ .Name }}" />
        </a>
        <figcaption itemprop="caption description">
          <span itemprop="copyrightHolder"></span>
        </figcaption>
      </figure>
    {{ end}}
  {{ end }}
</div>

{{- if eq $galleryCount 1 }}
<script src="https://cdn.jsdelivr.net/npm/jquery@3.5.1/dist/jquery.min.js"></script>
<script src="https://cdn.jsdelivr.net/gh/fancyapps/fancybox@3.5.7/dist/jquery.fancybox.min.js"></script>
{{ end }}