{{- /*
    Source: https://github.com/twbs/bootstrap/blob/main/site/layouts/shortcodes/scss-docs.html

    Usage: `docs name="name" file="path/filename.<toml|scss>"`

    Prints everything between `# toml-docs-start "name"` and `# toml-docs-end "name"`
    comments in the docs, or between `// scss-docs-start` and `// scss-docs-end`.
*/ -}}

{{- $name := .Get "name" -}}
{{- $basePath := .Site.Params.docs.basePath -}}
{{- $file := .Get "file" }}
{{- if hasPrefix $file "./" -}}
    {{- $file = path.Clean $file -}}
{{- else -}}
    {{- $file = path.Join $basePath (path.Clean $file) -}}
{{- end -}}
{{- $extension := strings.TrimLeft "." (path.Ext $file)  }}
{{- $capture_start := "" -}}
{{- $capture_end := "" -}}

{{- $id := printf "docs-collapse-%d" .Ordinal -}}

{{- $supportedExtensions := slice "js" "scss" "toml" -}}
{{- if in $supportedExtensions $extension -}}
    {{- if eq $extension "toml" }}
        {{- $capture_start = printf "# toml-docs-start %s" $name -}}
        {{- $capture_end = printf "# toml-docs-end %s" $name -}}
    {{- else -}}
        {{- $capture_start = printf "// %s-docs-start %s" $extension $name -}}
        {{- $capture_end = printf "// %s-docs-end %s" $extension $name -}}
    {{- end -}}
{{- else -}}
    {{- errorf "File format not supported (line %s): %s" .Position $file -}}
{{- end -}}

{{ $supportedFlags := slice "true" "false" -}}
{{ $showParam := "true" -}}
{{ $show := true -}}
{{ with .Get "show" }}{{ $showParam = . }}{{ end -}}
{{ if in $supportedFlags $showParam -}}
    {{ if eq $showParam "true" }}{{ $show = true }}{{ else }}{{ $show = false }}{{ end -}}
{{ else -}}
    {{ errorf "Invalid value for param 'show': %s" $showParam -}}
{{ end -}}


{{- /* If any parameters are missing, print an error and exit */ -}}
{{- if or (not $name) (not $file) -}}
    {{- errorf "%s: %q: Missing required parameters! Got: name=%q file=%q!" .Position .Name $name $file -}}
{{- else -}}
    {{- $regex := printf `%s((?:.|\n)*)%s` $capture_start $capture_end -}}

    {{- $match := findRE $regex (readFile $file) -}}
    {{- $match = index $match 0 -}}

    {{- if not $match -}}
        {{- errorf "%s: %q: Got no matches for name=%q in file=%q!" .Position .Name $name $file -}}
    {{- end -}}

    {{- $match = replace $match $capture_start "" -}}
    {{- $match = replace $match $capture_end "" -}}

    <ul class="nav nav-tabs">
        <li class="nav-item">
            <a class="nav-link active font-monospace" 
                href="#body-{{ $id }}" 
                aria-current="page" 
                data-bs-toggle="collapse" 
                data-bs-target=".multi-{{ $id }}" 
                aria-expanded="false" 
                aria-controls="body-{{ $id }} footer-{{ $id }}">
                <small>{{ strings.TrimPrefix $basePath $file }}</small>
            </a>
        </li>
    </ul>
    <div class="border-start border-end border-bottom mb-3">
        <div class="collapse multi-{{ $id }}{{ if $show }} show{{ end }} syntax-highlight" id="body-{{ $id }}">
            {{- highlight (trim $match "\r\n") $extension "" -}}
        </div>
        <div class="collapse multi-{{ $id }}{{ if not $show }} show{{ end }} p-3" id="footer-{{ $id }}"><i>...</i></div>
    </div>
{{- end -}}