Add opengraph metadata to theme

config.toml

@@ -62,16 +62,15 @@ summaryLength = 30
   ## You can enable to add anchor links to header elements
   # enable_anchor_link = true
 
-  # [params.homepage_meta_tags]
-  #   meta_description = "Leela Chess Zero is an open source neural network based chess engine."
-  #   meta_og_title = "Leela Chess Zero"
-  #   meta_og_type = "website"
-  #   meta_og_url = "https://hugo-whisper.netlify.com"
-  #   meta_og_image = "https://raw.githubusercontent.com/JugglerX/hugo-whisper-theme/master/images/tn.png"
-  #   meta_og_description = "Hugo Whisper is a documentation theme built with Hugo."
-  #   meta_twitter_card = "summary"
-  #   meta_twitter_site = "@zerostaticio"
-  #   meta_twitter_creator = "@zerostaticio"
+  [params.homepage_meta_tags]
+    meta_description = "Leela Chess Zero is an open source neural network based chess engine."
+    meta_og_title = "Leela Chess Zero"
+    meta_og_type = "website"
+    meta_og_url = "https://lczero.org"
+    # meta_og_image = "https://raw.githubusercontent.com/JugglerX/hugo-whisper-theme/master/images/tn.png"
+    meta_og_description = "Leela Chess Zero is an open source neural network based chess engine."
+    meta_twitter_card = "summary"
+    meta_twitter_site = "@leelachesszero"
 
   [params.logo]
       mobile = "/images/logo.svg"

content/blog/_index.md

@@ -1,6 +1,7 @@
 ---
-title: "Blog"
+title: "Leela Chess Zero Blog"
 date: 2019-12-07T19:59:42+01:00
+description: "Updates from the Lc0 team."
 draft: false
 weight: 100
 ---

themes/leela/layouts/_partials/head.html

@@ -4,6 +4,7 @@
 <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
 <link href="https://fonts.googleapis.com/css2?family=Roboto:ital,wght@0,100..900;1,100..900&display=swap" rel="stylesheet">
 <title>{{ if .IsHome }}{{ site.Title }}{{ else }}{{ printf "%s | %s" .Title site.Title }}{{ end }}</title>
+{{ partial "head/opengraph.html" . }}
 {{ partialCached "head/css.html" . }}
 {{ partialCached "head/js.html" . }}
 {{ if .Param "math" }}

themes/leela/layouts/_partials/head/opengraph.html

@@ -0,0 +1,81 @@
+{{/*  Source: https://github.com/gohugoio/hugo/blob/master/tpl/tplimpl/embedded/templates/_partials/opengraph.html  */}}
+<meta property="og:url" content="{{ .Site.Params.homepage_meta_tags.meta_og_url }}">
+
+{{- with or site.Title .Site.Params.homepage_meta_tags.meta_og_title | plainify }}
+  <meta property="og:site_name" content="{{ . }}">
+{{- end }}
+
+{{- with or .Title site.Title .Site.Params.homepage_meta_tags.meta_og_title | plainify }}
+  <meta property="og:title" content="{{ . }}">
+{{- end }}
+
+{{- with or .Description .Summary .Site.Params.homepage_meta_tags.meta_description | plainify | htmlUnescape }}
+  <meta property="og:description" content="{{ trim . "\n\r\t " }}">
+{{- end }}
+
+{{- with or .Params.locale site.Language.LanguageCode }}
+  <meta property="og:locale" content="{{ replace . `-` `_` }}">
+{{- end }}
+
+{{- with or .Title site.Title .Site.Params.homepage_meta_tags.meta_og_title | plainify }}
+  <meta name="twitter:title" content="{{ . }}">
+{{- end }}
+
+{{- with or .Description .Summary .Site.Params.homepage_meta_tags.Params.meta_description | plainify | htmlUnescape }}
+  <meta name="twitter:description" content="{{ trim . "\n\r\t " }}">
+{{- end }}
+
+
+<meta name="twitter:site" content="{{ .Site.Params.homepage_meta_tags.meta_twitter_site }}" />
+<meta name="twitter:card" content="{{ .Site.Params.homepage_meta_tags.meta_twitter_card }}" />
+
+{{- if .IsPage }}
+  <meta property="og:type" content="article">
+  {{- with .Section }}
+    <meta property="article:section" content="{{ . }}">
+  {{- end }}
+  {{- $ISO8601 := "2006-01-02T15:04:05-07:00" }}
+  {{- with .PublishDate }}
+    <meta property="article:published_time" {{ .Format $ISO8601 | printf "content=%q" | safeHTMLAttr }}>
+  {{- end }}
+  {{- with .Lastmod }}
+    <meta property="article:modified_time" {{ .Format $ISO8601 | printf "content=%q" | safeHTMLAttr }}>
+  {{- end }}
+  {{- range .GetTerms "tags" | first 6 }}
+    <meta property="article:tag" content="{{ .Page.Title | plainify }}">
+  {{- end }}
+{{- else }}
+  <meta property="og:type" content="website">
+{{- end }}
+
+{{- with .Params.audio }}
+  {{- range . | first 6  }}
+    <meta property="og:audio" content="{{ . | absURL }}">
+  {{- end }}
+{{- end }}
+
+{{- with .Params.videos }}
+  {{- range . | first 6 }}
+    <meta property="og:video" content="{{ . | absURL }}">
+  {{- end }}
+{{- end }}
+
+{{- range .GetTerms "series" }}
+  {{- range .Pages | first 7 }}
+    {{- if ne $ . }}
+      <meta property="og:see_also" content="{{ .Permalink }}">
+    {{- end }}
+  {{- end }}
+{{- end }}
+
+{{- with site.Params.social }}
+  {{- if reflect.IsMap . }}
+    {{- with .facebook_app_id }}
+      <meta property="fb:app_id" content="{{ . }}">
+    {{- else }}
+      {{- with .facebook_admin }}
+        <meta property="fb:admins" content="{{ . }}">
+      {{- end }}
+    {{- end }}
+  {{- end }}
+{{- end }}