{{ $slug := .Page.Params.siteslug}}
{{ $sections := where .Site.Sections "Section" .Page.Section}}

  <ul class = "cn-book-section-container" id = "top">
    {{ with (index $sections 0) }}
        {{ range .Sections }}
          {{if and .Params.subsection (eq .Params.siteslug $slug)}}
            {{ template "book-section" (dict "Section" . "CurrentPage" $.Permalink) }}
          {{end}}
      {{ end }}
    {{ end }}
  </ul>

{{ define "book-section" }}
  {{- with .Section }}
    <li class="cn-book-section">
        {{- template "book-page-link" (dict "Page" . "CurrentPage" $.CurrentPage) -}}

        {{- template "book-section-children" (dict "Section" . "CurrentPage" $.CurrentPage ) }}
    </li>
  {{- end }}
{{- end }}

{{ define "book-section-children" }}
  {{- with .Section -}}
    <ul class="cn-book-section-container" id = "subsection">
      {{- range (union .Sections .Pages) }}
        {{ if and .IsPage }} 
          {{if ne .Params.bookhidden true }}
            <li>{{- template "book-page-link" (dict "Page" . "CurrentPage" $.CurrentPage) }}</li>
          {{ end }} 
        {{ else }} 
         {{- template "book-section" (dict "Section" . "CurrentPage" $.CurrentPage ) }}
        {{ end }} 
      {{- end }}


    </ul>
  {{- end }}
{{- end -}}

{{ define "book-page-link" }}
  {{- with .Page -}}
    {{ if ne  .Params.bookhidden true }}
      <a href="{{ .RelPermalink }}" {{ if eq $.CurrentPage .Permalink }} class="active" {{ end }}>{{ .Title }}</a>
    {{ end }}
  {{ end }}
{{ end }}