{{ $productPathData := findRE "[^/]+.*?" .RelPermalink }}
{{ $product := index $productPathData 0 }}
{{ $productName := (index .Site.Data.products $product).name }}
{{ $currentVersion := index $productPathData 1 }}

{{ $stableVersion := (index .Site.Data.products $product).latest }}
{{ $stableVersionURL := replaceRE `v[1-2]\.[0-9]{1,2}` $stableVersion .RelPermalink }}

{{ if lt $currentVersion $stableVersion }}
  <div class="warn block old-version">
    <p>
      This page documents an earlier version of {{ $productName }}.
      <a href="/{{ $product }}/{{$stableVersion}}/">{{ $productName }} {{ $stableVersion }}</a> is the latest stable version.<br/>
      {{ if eq (findRE `v[1-2]` $currentVersion) (findRE `v[1-2]` $stableVersion) }}
        <a href="{{ $stableVersionURL }}">View this page in the {{ $stableVersion }} documentation</a>.
      {{ end }}
    </p>
  </div>
{{ else if gt $currentVersion $stableVersion }}
  <div class="note block old-version">
    <p>
      This page documents a <strong>pre-release</strong> version of {{ $productName }}.
      <a href="/{{ $product }}/{{$stableVersion}}/">{{ $productName }} {{ $stableVersion }}</a> is the latest stable version.<br/>
      {{ if eq (findRE `v[1-2]` $currentVersion) (findRE `v[1-2]` $stableVersion) }}
        <a href="{{ $stableVersionURL }}">View this page in the {{ $stableVersion }} documentation</a>.
      {{ end }}
    </p>
  </div>
{{ end }}