{{- /*
  Stylesheet tag renderer.
  - Accepts direct <link> HTML or builds CSS resources from local paths/content.
  - Supports template execution, optional toCSS, minify/fingerprint, and preload mode.
  @param {String} .Source stylesheet URL/path or full <link> HTML
  @param {String} [.Content] inline style content to write as generated resource
  @param {String} [.Path] resource path used with Content
  @param {Object} [.Template] template name/path for ExecuteAsTemplate
  @param {Object} [.Context] template context for ExecuteAsTemplate
  @param {Object} [.ToCSS] toCSS options
  @param {Boolean} [.Minify] whether to minify resource
  @param {String} [.Fingerprint] fingerprint algorithm
  @param {Boolean} [.Crossorigin] whether to add crossorigin=anonymous
  @param {Boolean} [.Preload] whether to output preload + noscript fallback
  @param {String} [.Integrity] SRI hash value
  @param {String} [.Attr] additional attributes
*/ -}}

{{- if strings.HasPrefix .Source "<link" -}}
  {{- safeHTML .Source -}}
{{- else -}}
  {{- $href := .Source -}}
  {{- $integrity := .Integrity -}}
  {{- $resource := 0 -}}
  {{- if $href | and (not (urls.Parse $href).Host) -}}
    {{- $resource = resources.Get $href -}}
  {{- end -}}
  {{- with .Content -}}
    {{- $resource = resources.FromString $.Path . -}}
  {{- end -}}
  {{- if $resource -}}
    {{- with .Template -}}
      {{- $resource = $resource | resources.ExecuteAsTemplate . $.Context -}}
    {{- end -}}
    {{- with .ToCSS -}}
      {{- $options := . | merge (dict "outputStyle" "compressed") -}}
      {{- $resource = $resource | toCSS $options -}}
    {{- end -}}
    {{- if .Minify -}}
      {{- $resource = $resource | minify -}}
    {{- end -}}
    {{- with .Fingerprint -}}
      {{- $resource = $resource | fingerprint . -}}
      {{- $integrity = $resource.Data.Integrity -}}
    {{- end -}}
    {{- $href = $resource.RelPermalink -}}
  {{- end -}}
  {{- $attrs := printf `href="%v"` $href -}}
  {{- if .Crossorigin -}}
    {{- $attrs = ` crossorigin="anonymous"` | add $attrs -}}
  {{- end -}}
  {{- with $integrity -}}
    {{- $attrs = printf ` integrity="%v"` . | add $attrs -}}
  {{- end -}}
  {{- with .Attr -}}
    {{- $attrs = add " " . | add $attrs -}}
  {{- end -}}
  {{- if .Preload -}}
    <link rel="preload" {{ $attrs | safeHTMLAttr }} as="style" onload="this.removeAttribute('onload');this.rel='stylesheet'">
    <noscript><link rel="stylesheet" {{ $attrs | safeHTMLAttr }}></noscript>
  {{- else -}}
    <link rel="stylesheet" {{ $attrs | safeHTMLAttr }}>
  {{- end -}}
{{- end -}}