<!--
Put this file in /layouts/shortcodes/figure.html
NB this overrides Hugo's built-in "figure" shortcode but is backwards compatible
Documentation and licence at https://github.com/liwenyip/hugo-easy-gallery/
  -->

<!-- count how many times we've called this shortcode; load the css if it's the first time -->
{{- if not ($.Page.Scratch.Get "figurecount") -}}<link rel="stylesheet" href="/css/hugo-easy-gallery.css" />{{- end -}}
{{- $.Page.Scratch.Add "figurecount" 1 -}}

<!-- if 'resource' is given, look for a page resource by that name. -->
<!-- if 'page' is given, find the page resource there. -->
<!-- if not, find the page resource in the current page. -->
<!-- (yes, my description is probably at least 50% wrong) -->

<!-- Thumbnail image size/type -->
{{- $resize_opts := "600x jpg" -}}
<!-- TODO: This isn't generating a JPEG on my configuration.  Not sure
     why.  Hugo version issue? -->
{{- $thumb := "" -}}
{{- $href := "" -}}
{{- if .Get "resource" -}}
   {{- $page := $.Page -}}
   {{- with .Get "page" -}}
      {{- $page = $.Site.GetPage . -}}
   {{- end -}}
   {{- if not $page -}}
      {{- errorf "Error: Can't find page %s" (.Get "page") -}}
   {{- end -}}
   {{- $resource := (.Get "resource") -}}
   {{- $original := $page.Resources.GetMatch (printf "*%s*" $resource) -}}
   {{- if eq $original nil -}}
      {{- errorf "Error: Can't find resource %s on page %s" $resource (.Get "page") -}}
   {{- end -}}
   {{- .Scratch.Set "image" ($original.Resize $resize_opts) -}}
   {{- $image := .Scratch.Get "image" -}}
   {{- $thumb = $image.RelPermalink -}}
   {{- $href = $original.RelPermalink -}}
{{- else -}}
   <!-- use either src or link-thumb for thumbnail image -->
   {{- $thumb = .Get "src" | default (printf "%s." (.Get "thumb") | replace (.Get "link") ".") -}}
   {{- $href = .Get "link" | default (.Get "src") -}}
{{- end -}}

<div class="box{{ with .Get "caption-position" }} fancy-figure caption-position-{{.}}{{end}}{{ with .Get "caption-effect" }} caption-effect-{{.}}{{end}}" {{ with .Get "width" }}style="max-width:{{.}}"{{end}}>
  <figure {{ with .Get "class" }}class="{{.}}"{{ end }} itemprop="associatedMedia" itemscope itemtype="http://schema.org/ImageObject">
    <!-- Prepending ../.. below is a hack to get around
         https://github.com/gohugoio/hugo/issues/2744 when I don't
         feel like setting baseURL and using absolute URLs. -->
    <div class="img"{{ if .Parent }} style="background-image: url('../..{{ $thumb }}');"{{ end }}{{ with .Get "size" }} data-size="{{.}}"{{ end }}>
      <img itemprop="thumbnail" src="{{ $thumb }}" {{ with .Get "alt" | default (.Get "caption" | markdownify) }}alt="{{.}}"{{ end }}/><!-- <img> hidden if in .gallery -->
    </div>
    
    <a href="{{ $href }}" itemprop="contentUrl"></a>
    {{- if or (or (.Get "title") (.Get "caption" | markdownify)) (.Get "attr") -}}
      <figcaption>
        {{- with .Get "title" -}}<h4>{{.}}</h4>{{ end }}
        {{- if or (.Get "caption" | markdownify) (.Get "attr")}}
          <p>
            {{- .Get "caption" -}}
            {{- with .Get "attrlink"}}<a href="{{.}}">{{ .Get "attr" }}</a>{{ else }}{{ .Get "attr"}}{{ end -}}
          </p>
        {{- end -}}
      </figcaption>
    {{- end -}}
  </figure>
</div>
