From 2e04a8ce26a4388a0151613faa62e5746e0218e3 Mon Sep 17 00:00:00 2001
From: Alan Orth <alan.orth@gmail.com>
Date: Thu, 19 Jan 2017 16:02:54 +0200
Subject: [PATCH] Import opengraph partial from Hugo
MIME-Version: 1.0
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Hugo's current handling of dates in the opengraph partial needs
nome work to be more correct—for example: the usage of published
and updated times. This comes verbatim from the Hugo source tree.

See: tpl/template_embedded.go
---
 layouts/partials/head-meta.html |  2 +-
 layouts/partials/opengraph.html | 39 +++++++++++++++++++++++++++++++++
 2 files changed, 40 insertions(+), 1 deletion(-)
 create mode 100644 layouts/partials/opengraph.html

diff --git a/layouts/partials/head-meta.html b/layouts/partials/head-meta.html
index 61a23c1..7c81769 100644
--- a/layouts/partials/head-meta.html
+++ b/layouts/partials/head-meta.html
@@ -1,7 +1,7 @@
 <meta charset="utf-8">
 <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
 
-{{ template "_internal/opengraph.html" . }}
+{{ partial "opengraph.html" . }}
 {{ template "_internal/twitter_cards.html" . }}
 
 {{- with .Site.Params.google_verify_meta -}}
diff --git a/layouts/partials/opengraph.html b/layouts/partials/opengraph.html
new file mode 100644
index 0000000..e5e6431
--- /dev/null
+++ b/layouts/partials/opengraph.html
@@ -0,0 +1,39 @@
+<meta property="og:title" content="{{ .Title }}" />
+<meta property="og:description" content="{{ with .Description }}{{ . }}{{ else }}{{if .IsPage}}{{ .Summary }}{{ else }}{{ with .Site.Params.description }}{{ . }}{{ end }}{{ end }}{{ end }}" />
+<meta property="og:type" content="{{ if .IsPage }}article{{ else }}website{{ end }}" />
+<meta property="og:url" content="{{ .Permalink }}" />
+{{ with .Params.images }}{{ range first 6 . }}
+  <meta property="og:image" content="{{ . | absURL }}" />
+{{ end }}{{ end }}
+
+{{ if not .Date.IsZero }}<meta property="og:updated_time" content="{{ .Date.Format "2006-01-02T15:04:05-07:00" | safeHTML }}"/>{{ end }}{{ with .Params.audio }}
+<meta property="og:audio" content="{{ . }}" />{{ end }}{{ with .Params.locale }}
+<meta property="og:locale" content="{{ . }}" />{{ end }}{{ with .Site.Params.title }}
+<meta property="og:site_name" content="{{ . }}" />{{ end }}{{ with .Params.videos }}
+{{ range .Params.videos }}
+  <meta property="og:video" content="{{ . | absURL }}" />
+{{ end }}{{ end }}
+
+<!-- If it is part of a series, link to related articles -->
+{{ $permalink := .Permalink }}
+{{ $siteSeries := .Site.Taxonomies.series }}{{ with .Params.series }}
+{{ range $name := . }}
+  {{ $series := index $siteSeries $name }}
+  {{ range $page := first 6 $series.Pages }}
+    {{ if ne $page.Permalink $permalink }}<meta property="og:see_also" content="{{ $page.Permalink }}" />{{ end }}
+  {{ end }}
+{{ end }}{{ end }}
+
+{{ if .IsPage }}
+{{ range .Site.Authors }}{{ with .Social.facebook }}
+<meta property="article:author" content="https://www.facebook.com/{{ . }}" />{{ end }}{{ with .Site.Social.facebook }}
+<meta property="article:publisher" content="https://www.facebook.com/{{ . }}" />{{ end }}
+<meta property="article:published_time" content="{{ .PublishDate }}" />
+<meta property="article:modified_time" content="{{ .Date }}" />
+<meta property="article:section" content="{{ .Section }}" />
+{{ with .Params.tags }}{{ range first 6 . }}
+  <meta property="article:tag" content="{{ . }}" />{{ end }}{{ end }}
+{{ end }}{{ end }}
+
+<!-- Facebook Page Admin ID for Domain Insights -->
+{{ with .Site.Social.facebook_admin }}<meta property="fb:admins" content="{{ . }}" />{{ end }}