{{- /* Get parameters */ -}}
{{- $currentPage := .currentPage -}}
{{- $nodes := .nodes -}}
{{- $version := .version | default "opensource" -}}

<nav class="section-nav docs-links">
  <ul class="list-unstyled">
    {{- range $nodes }}
      {{- template "walk" (dict "node" . "currentPage" $currentPage "version" $version) }}
    {{- end }}
  </ul>
</nav>

{{- define "walk" }}
  {{- $currentPage := .currentPage -}}
  {{- $node := .node -}}
  {{- $version := .version -}}

  {{- /* Skip node if it has a Page with an audience that does not match version */ -}}
  {{- $skip := false -}}
  {{- with $node.Page }}
    {{- $audience := .Params.audience -}}
    {{- if and $audience (ne $audience $version) }}
      {{- $skip = true -}}
    {{- end }}
  {{- end }}

  {{- if not $skip }}
    {{- $linkContent := $node.Page.LinkTitle -}}
    {{- with $node.Name }}
      {{- $linkContent = . }}
    {{- end }}

    {{- /* Pro badge for parent pages (from _index.md with child pages) marked audience: pro */ -}}
    {{- $proBadge := "" -}}
    {{- with $node.Page }}
      {{- if and (eq .Params.audience "pro") .Pages }}
        {{- $proBadge = `<span class="pro-badge" aria-label="Pro feature">Pro</span>` -}}
      {{- end }}
    {{- end }}

    {{- $ariaCurrent := "" -}}
    {{- $liClass := "" -}}

    {{- if $node.Page }}
      {{- if in $currentPage.Ancestors $node.Page }}
        {{- $ariaCurrent = "true" }}
      {{- end }}
      {{- if $currentPage.Eq $node.Page }}
        {{- $ariaCurrent = "page" }}
        {{- $liClass = "active" }}
      {{- end }}
    {{- end }}

    <li {{- with $liClass }} class="{{ . }}" {{ end -}} {{- with $node.Page }}{{ with .Params.audience }} data-audience="{{ . }}"{{ end }}{{ end -}}>
      {{- with $node.Page.Pages }}
        <details{{- with $ariaCurrent }} open{{- end }}{{- if ne $node.Page.Params.sidebar.collapsed true }} open{{- end }}>
          <summary>{{ $linkContent }}{{ $proBadge | safeHTML }}</summary>
          <ul class="list-unstyled list-nested">
            {{- range . }}
              {{- template "walk" (dict "node" . "currentPage" $currentPage "version" $version) }}
            {{- end }}
          </ul>
        </details>
      {{- else }}
        {{- if $node.Page }}
          <a {{- with $ariaCurrent }} aria-current="{{ . }}" {{- end }} href="{{- $node.Page.RelPermalink }}">{{ $linkContent }}</a>
        {{- else }}
          {{- /* Menu-only item with no page */ -}}
          {{ $linkContent }}
        {{- end }}
      {{- end }}
    </li>
  {{- end }}
{{- end }}