{{ $page := . }}

{{ $result := "" }}

{{ if $page.Params.authors }}
    {{ $names := slice }}

    {{ range $page.Params.authors }}
        {{ if eq (printf "%T" .) "string" }}
            {{ $names = $names | append (index site.Params.authors .).name }}
        {{ else }}
            {{ with .author }}
                {{ $names = $names | append (index site.Params.authors .).name }}
            {{ else }}
                {{ $names = $names | append .name }}
            {{ end }}
        {{ end }}
    {{ end }}

    {{ $result = delimit $names ", " }}
{{ else if site.Params.authors }}
    {{ $names := slice }}

    {{ range $k, $v := site.Params.authors }}
        {{ if eq $v.default true }}
            {{ $names = $names | append $v.name }}
        {{ end }}
    {{ end }}

    {{ $result = delimit $names ", " }}
{{ end }}

{{ return $result }}