{{/* Hugo Blox: Dynamic Tailwind @source generation for Hugo modules */}}
{{/* Documentation: https://hugoblox.com/docs/ */}}
{{/* License: https://github.com/HugoBlox/kit/blob/main/LICENSE.md */}}

{{/*
This partial generates Tailwind CSS @source directives that tell Tailwind where to scan for CSS classes.

It provides a robust bridge between Hugo's virtual filesystem (which includes module mounts)
and Tailwind's real filesystem scanner.
*/}}
{{ $paths := slice }}

{{/* 1. Always scan the site's source files. */}}
{{ $paths = $paths | append `content/**/*.md` }}
{{ $paths = $paths | append `layouts/**/*.html` }}
{{ $paths = $paths | append `assets/js/**/*.js` }}
{{ $paths = $paths | append `assets/js/**/*.jsx` }}
{{ $paths = $paths | append `assets/js/**/*.tsx` }}
{{ $paths = $paths | append `hugo_stats.json` }}

{{/*
2.  Crucially, scan Hugo's generated JS output from Preact components.
    These files are built by Hugo's `js.Build` into a predictable location within the
    project's `assets` directory, making them a reliable source for Tailwind to scan.
    This step happens before Tailwind runs, thanks to `templates.Defer` in `site_head.html`.
*/}}
{{ $paths = $paths | append `assets/js/preact-built/**/*.js` }}

{{/*
3. Inline sources: extract class attributes from Preact JSX/TSX and embed them
   directly so Tailwind can always see them regardless of FS layout.
*/}}
{{ $jsx_files := resources.Match "js/hbx/**/*.jsx" }}
{{ $tsx_files := resources.Match "js/hbx/**/*.tsx" }}

{{ $extracted_classes := slice }}
{{ range $f := $jsx_files }}
  {{ $code := $f.Content }}
  {{ $matches := findRE `class(?:Name)?\s*=\s*"([^"]+)"` $code }}
  {{ range $m := $matches }}
    {{ $cls := replaceRE `^class(?:Name)?\s*=\s*"([^"]+)"$` `$1` $m }}
    {{ $classes := split $cls " " }}
    {{ range $class := $classes }}
      {{ $extracted_classes = $extracted_classes | append $class }}
    {{ end }}
  {{ end }}
{{ end }}
{{ range $f := $tsx_files }}
  {{ $code := $f.Content }}
  {{ $matches := findRE `class(?:Name)?\s*=\s*"([^"]+)"` $code }}
  {{ range $m := $matches }}
    {{ $cls := replaceRE `^class(?:Name)?\s*=\s*"([^"]+)"$` `$1` $m }}
    {{ $classes := split $cls " " }}
    {{ range $class := $classes }}
      {{ $extracted_classes = $extracted_classes | append $class }}
    {{ end }}
  {{ end }}
{{ end }}

{{ $extracted_classes = $extracted_classes | uniq }}
{{ range $class := $extracted_classes }}
@source inline("{{ $class }}");
{{ end }}

{{/* Generate the @source rules */}}
{{ range $paths }}
@source "{{ . }}";
{{ end }}