hugo-theme-relearn/layouts/partials/get-theme-variants.hugo

{{- $page := . }}
{{- $autores := resources.Get "css/auto.css" }}
{{- $printres := resources.Get "css/format-print.css" }}
{{- $nonautothemevariants := slice }}
{{- /* we need relearn-light in every case for the print styles */}}
{{- $refthemevariants := slice | append "relearn-light" }}

{{- /*
Unification run:
- convert from old forms to slice of dicts
- add default name property
- convert auto property to slice
- save non auto variants to later assign them as default for missing auto variants
- mark variants configured by the user
*/}}
{{- $tempthemevariants := slice | append (.Site.Params.themeVariant | default "auto" ) }}
{{- $themevariants := slice }}
{{- range $tempthemevariant := $tempthemevariants }}
  {{- $themevariant := $tempthemevariant }}
  {{- if not (reflect.IsMap $themevariant) }}
    {{- $themevariant = dict "identifier" $tempthemevariant }}
  {{- end }}
  {{- if not $themevariant.name }}
    {{- $themevariant = collections.Merge $themevariant (dict "name" ($themevariant.identifier | humanize | strings.Title)) }}
  {{- end }}
  {{- if eq $themevariant.identifier "auto" }}
    {{- $themevariant = collections.Merge $themevariant (dict "auto" ($themevariant.auto | default slice)) }}
  {{- end }}
  {{- if not (isset $themevariant "auto") }}
    {{- $nonautothemevariants = $nonautothemevariants | append $themevariant.identifier }}
  {{- end }}
  {{- $themevariant = collections.Merge $themevariant (dict "config" true) }}
  {{- $themevariants = $themevariants | append $themevariant }}
{{- end }}

{{- /*
Auto run:
- fill up auto property with defaults
- save variants referenced by auto configuration
- write variant CSS file based on auto template
- add chroma property
- write chroma CSS file based on auto template
*/}}
{{- $defaultautothemevariants := slice }}
{{- $defaultautothemevariants = $defaultautothemevariants | append (index .Site.Params.themeVariantAuto 0 | default (index $nonautothemevariants 0) | default "relearn-light") }}
{{- $defaultautothemevariants = $defaultautothemevariants | append (index .Site.Params.themeVariantAuto 1 | default (index $nonautothemevariants 1) | default "relearn-dark") }}
{{- $tempthemevariants = $themevariants }}
{{- $themevariants = slice }}
{{- range $tempthemevariant := $tempthemevariants }}
  {{- $themevariant := $tempthemevariant }}
  {{- if collections.IsSet $themevariant "auto" }}
    {{- $light := index $themevariant.auto 0 | default (index $defaultautothemevariants 0) }}
    {{- $dark := index $themevariant.auto 1 | default (index $defaultautothemevariants 1) }}
    {{- $themevariant = collections.Merge $themevariant (dict "auto" (slice | append $light | append $dark)) }}
    {{- $refthemevariants = $refthemevariants | append $themevariant.auto }}
    {{- $cssres := $autores | resources.ExecuteAsTemplate (printf "css/theme-%s.css" $themevariant.identifier) (dict "prefix" "theme" "light" $light "dark" $dark) }}
    {{- /* the following code causes Hugo to generate our css file - although it is in comments */}}<!-- {{ $cssres.RelPermalink }} -->
    {{- $themevariant = collections.Merge $themevariant (dict "chroma" $themevariant.identifier) }}
    {{- $cssres = $autores | resources.ExecuteAsTemplate (printf "css/chroma-%s.css" $themevariant.chroma) (dict "prefix" "chroma" "light" $light "dark" $dark) }}
    {{- /* the following code causes Hugo to generate our css file - although it is in comments */}}<!-- {{ $cssres.RelPermalink }} -->
  {{- end }}
  {{- $themevariants = $themevariants | append $themevariant }}
{{- end }}

{{- /*
Ref run:
- add variants referenced by auto properties
- add default name property
*/}}
{{- range $refthemevariant := $refthemevariants }}
  {{- if not (index (collections.Where $themevariants "identifier" $refthemevariant) 0) }}
    {{- $themevariant := (dict "identifier" $refthemevariant "name" ($refthemevariant | humanize | strings.Title) "config" false) }}
    {{- $themevariants = $themevariants | append $themevariant }}
  {{- end }}
{{- end }}

{{- /*
Non-auto run:
- write variant CSS file and all imported variant CSS files
- add chroma property from deepest imported variant
- write chroma CSS file (just the root one because they are not allowed to be nested and the deepest one wins)
*/}}
{{- $tempthemevariants = $themevariants }}
{{- $themevariants = slice }}
{{- range $tempthemevariant := $tempthemevariants }}
  {{- $themevariant := $tempthemevariant }}
  {{- if not (collections.IsSet $themevariant "auto") }}
    {{- $themevariant = partial "get-theme-details.html" (dict "themevariant" $themevariant "identifier" $themevariant.identifier)}}
    {{- $cssres := resources.Get (printf "css/chroma-%s.css" $themevariant.chroma) }}
    {{- if not $cssres }}
      {{- errorf "\"chroma-%s.css\": file not found in \"assets/css\"; if you are migrating from a theme version older thant 6.0.0, you have to move it over from \"static/css\"" $themevariant.chroma }}
    {{- end }}
    {{- /* the following code causes Hugo to generate our css file - although it is in comments */}}<!-- {{ $cssres.RelPermalink }} -->
  {{- end }}
  {{- $themevariants = $themevariants | append $themevariant }}
{{- end }}

{{- $cssres := $printres | resources.ExecuteAsTemplate "css/format-print.css" (dict "themevariant" (index (collections.Where $themevariants "identifier" "relearn-light") 0)) }}
{{- /* the following code causes Hugo to generate our css file - although it is in comments */}}<!-- {{ $cssres.RelPermalink }} -->

{{- return collections.Where $themevariants "config" true }}

{{- define "partials/get-theme-details.html" }}
  {{- $themevariant := .themevariant }}
  {{- $identifier := .identifier }}
  {{- $themecontent := "" }}
  {{- with resources.Get (printf "css/theme-%s.css" $identifier) }}
    {{- $themecontent = .Content }}
  {{- else }}
    {{- errorf "\"theme-%s.css\": file not found in \"assets/css\"; if you are migrating from a theme version older thant 6.0.0, you have to move it over from \"static/css\"" $identifier }}
  {{- end }}
  {{- $chroma := "" }}
  {{- range findRESubmatch `[ \t]*@import\s+[^$]*?chroma-([^.]*?)\.css` $themecontent }}
    {{- $chroma = index . 1 }}
    {{- errorf "\"theme-%s.css\": UNSUPPORTED use of @import for chroma stylesheet, instead use '--CODE-theme: %s;'; see https://mcshelby.github.io/hugo-theme-relearn/basics/migration#600" $identifier $chroma }}
  {{- end }}
  {{- range findRESubmatch `[ \t]*@import\s+[^$]*?theme-([^.]*?)\.css` $themecontent }}
    {{- $subidentifier := index . 1 }}
    {{- $themevariant = partial "get-theme-details.html" (dict "themevariant" $themevariant "identifier" $subidentifier) }}
    {{- $chroma = $themevariant.chroma }}
  {{- end }}
  {{- range findRESubmatch `[ \t]*--CODE-theme\s*:\s*([^;]*?)\s*;` $themecontent }}
    {{- $chroma = index . 1 }}
  {{- end }}
  {{- if not $chroma }}
    {{- $chroma = "relearn-light" }}
    {{- $themecontent = replaceRE `(:root\s*\{[ \t]*)(\s*)` (printf "${1}${2}--CODE-theme: %s;${2}" $chroma) $themecontent }}
  {{- end }}
  {{- $themevariant = collections.Merge $themevariant (dict "chroma" $chroma) }}
  {{- $cssres := $themecontent | resources.FromString (printf "css/theme-%s.css" $identifier) }}
  {{- /* the following code causes Hugo to generate our css file - although it is in comments */}}<!-- {{ $cssres.RelPermalink }} -->
  {{- return $themevariant }}
{{- end }}