Ajoute des métadonnées de partage et d'indexation

layouts/partials/head/social-image.html

@@ -0,0 +1,55 @@
+{{- $image := false -}}
+{{- $isCoverImage := false -}}
+{{- $alt := "" -}}
+{{- with .Params.cover -}}
+  {{- $cover := $.Resources.GetMatch . -}}
+  {{- if and $cover (ne $cover.MediaType.SubType "svg") -}}
+    {{- $image = $cover -}}
+    {{- $isCoverImage = true -}}
+    {{- $coverName := path.Base . | replaceRE "\\.[^.]+$" "" -}}
+    {{- $coverDataFile := $.Resources.Get (printf "data/images/%s.yaml" $coverName) -}}
+    {{- if not $coverDataFile -}}
+      {{- $coverDataFile = $.Resources.Get (printf "data/%s.yaml" $coverName) -}}
+    {{- end -}}
+    {{- $coverData := dict -}}
+    {{- if $coverDataFile -}}
+      {{- $coverData = $coverDataFile.Content | transform.Unmarshal -}}
+    {{- end -}}
+    {{- $alt = index $coverData "description" | default "" -}}
+    {{- if not $alt -}}
+      {{- $alt = index $coverData "title" | default "" -}}
+    {{- end -}}
+  {{- end -}}
+{{- end -}}
+{{- if not $image -}}
+  {{- $logoPath := site.Params.logo | default "logo-large.png" -}}
+  {{- $logo := resources.GetMatch $logoPath -}}
+  {{- if and $logo (ne $logo.MediaType.SubType "svg") -}}
+    {{- $image = $logo -}}
+  {{- end -}}
+{{- end -}}
+{{- if not $alt -}}
+  {{- if and $image $isCoverImage -}}
+    {{- if and .IsPage (not .IsHome) -}}
+      {{- $alt = printf "Image de partage pour %s" .Title -}}
+    {{- else -}}
+      {{- $alt = printf "Logo du site %s" site.Title -}}
+    {{- end -}}
+  {{- else if $image -}}
+    {{- $alt = printf "Logo du site %s" site.Title -}}
+  {{- end -}}
+{{- end -}}
+{{- $data := dict -}}
+{{- if $image -}}
+  {{- $data = dict
+    "url" $image.Permalink
+    "alt" ($alt | strings.TrimSpace | truncate 420)
+  -}}
+  {{- with $image.Width -}}
+    {{- $data = merge $data (dict "width" .) -}}
+  {{- end -}}
+  {{- with $image.Height -}}
+    {{- $data = merge $data (dict "height" .) -}}
+  {{- end -}}
+{{- end -}}
+{{- return $data -}}