{{/* NOTE: Hugo has limited support for variable scoping and looping. This is a work around these limitations. */}}

{{ $.Scratch.Set "page" . }}
{{ $.Scratch.Set "pagePresent" true }}

{{/* Assuming there will never be more than 5 levels of page depth... */}}
{{ range (slice 1 2 3 4 5) }}
  {{ $page := $.Scratch.Get "page" }}

  {{ if $.Scratch.Get "pagePresent" }}
    {{ if $page.IsHome }}
      {{ $.Scratch.Add "pageEntries" (slice (dict "id" $page.Permalink "name" $.Site.Title)) }}
    {{ else }}
      {{ $.Scratch.Add "pageEntries" (slice (dict "id" $page.Permalink "name" $page.Title)) }}
    {{ end }}
  {{ end }}

  {{ if $page.Parent }}
    {{ $.Scratch.Set "page" $page.Parent }}
  {{ else }}
    {{ $.Scratch.Set "pagePresent" false }}
  {{ end }}
{{ end }}

{{ $pageEntries := $.Scratch.Get "pageEntries" }}
{{ $breadcrumbListLength := sub (len $pageEntries) 1 }}

{{ range $listIndex, $_ := $pageEntries }}
  {{ with (index $pageEntries (sub $breadcrumbListLength $listIndex)) }}
    {{ $.Scratch.Add "itemListElement" (slice (dict "@type" "ListItem" "position" (add $listIndex 1) "item" (dict "@id" .id "name" .name))) }}
  {{ end }}
{{ end }}

<script type="application/ld+json">
  {{ dict "@context" "http://schema.org" "@type" "BreadcrumbList" "itemListElement" (.Scratch.Get "itemListElement") | jsonify }}
</script>