From 4203b8c0eaeb722f0ffe9d0b82b907aace2a43cf Mon Sep 17 00:00:00 2001
From: Michael Tremer <michael.tremer@ipfire.org>
Date: Thu, 23 Jan 2020 12:25:40 +0000
Subject: [PATCH] blog: Add meta tags for OpenGraph & Twitter

Those tags will be read by Facebook, Twitter and other software
like Discourse to show a short summary about the content behind
the link.

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
---
 src/templates/blog/base.html |  1 +
 src/templates/blog/post.html | 30 ++++++++++++++++++++++++++++++
 2 files changed, 31 insertions(+)

diff --git a/src/templates/blog/base.html b/src/templates/blog/base.html
index d06dbf3a..723d7024 100644
--- a/src/templates/blog/base.html
+++ b/src/templates/blog/base.html
@@ -2,6 +2,7 @@
 
 {% block head %}
 	<link rel="alternate" type="application/rss+xml" title="RSS" href="https://blog.ipfire.org/feed.xml" />
+	{% block meta %}{% end block %}
 {% end block %}
 
 {% block content %}
diff --git a/src/templates/blog/post.html b/src/templates/blog/post.html
index 4532880e..54a3eb78 100644
--- a/src/templates/blog/post.html
+++ b/src/templates/blog/post.html
@@ -2,6 +2,36 @@
 
 {% block title %}{{ post.title }}{% end block %}
 
+{% block meta %}
+	{% import ipfire.accounts as accounts %}
+
+	<!-- Facebook OpenGraph -->
+	<meta property="og:site_name" content="IPFire Blog" />
+	<meta property="og:title" content="{{ post.title }} - The IPFire Blog" />
+	<meta property="og:description" content="{{ post.excerpt }}" />
+	<meta property="og:url" content="{{ request.full_url() }}" />
+	<meta property="og:image" content="https://blog.ipfire.org/{{ static_url("img/ipfire-tux.png") }}" />
+
+	<meta property="og:type" content="article" />
+	<meta property="og:article:published_time" content="{{ post.published_at.isoformat() }}" />
+	<meta property="og:article:modified_time" content="{{ post.updated_at.isoformat() }}" />
+	{% if isinstance(post.author, accounts.Account) %}
+		<meta property="og:article:author:first_name" content="{{ post.author.first_name }}" />
+		<meta property="og:article:author:last_name" content="{{ post.author.last_name }}" />
+		<meta property="og:article:author:username" content="{{ post.author.uid }}" />
+	{% end %}
+	{% for tag in post.tags %}
+		<meta property="og:article:tag" content="{{ tag }}" />
+	{% end %}
+
+	<!-- Twitter -->
+	<meta property="twitter:site" content="@ipfire" />
+	<meta property="twitter:card" content="summary_large_image" />
+	<meta property="twitter:title" content="{{ post.title }} - The IPFire Blog" />
+	<meta property="twitter:description" content="{{ post.excerpt }}" />
+	<meta property="twitter:image" content="https://blog.ipfire.org/{{ static_url("img/ipfire-tux.png") }}" />
+{% end block %}
+
 {% block main %}
 	<div class="card">
 		<div class="card-body">
-- 
2.47.3