{{/*
    Get the first leaf section for a given section, respecting the ordering
    of each intermediate section.

    If there is no sub-section to the given section, returns the given section itself.

    Expects a section -- NOT A REGULAR PAGE -- to be given as argument, will raise an
    error otherwise.

    Returns a Section.

    Example usage from a regular page:
    - Last chapter of a comic : {{ partial "func/FirstLeafSectionRecursive.html" .FirstSection }}
*/}}

{{ if .IsPage }}
    {{ errorf "'func/FirstLeafSectionRecursive' page argument must be a section, not a regular page" }}
{{ end }}

{{ $last_section := . }}

{{ $sub_sections := where .Section }}

{{ if gt $sub_sections.Len 0 }}
    {{ $last_sub_section := index $sub_sections 0 }}
    {{ $last_section = partial "func/FirstLeafSectionRecursive.html" $last_sub_section }}
{{ end }}

{{ return $last_section }}