Add simple OG metadata tags to templates

Hello, #185

nyaa/templates/404.html

@@ -1,5 +1,8 @@
 {% extends "layout.html" %}
 {% block title %}404 Not Found :: {{ config.SITE_NAME }}{% endblock %}
+{% block metatags %}
+<meta property="og:description" content="Nothing here.">
+{% endblock %}
 {% block body %}
 <h1>404 Not Found</h1>
 <p>The path you requested does not exist on this server.</p>

nyaa/templates/home.html

@@ -1,5 +1,12 @@
 {% extends "layout.html" %}
 {% block title %}{% if search.term %}{{ search.term | e}}{% else %}Browse{% endif %} :: {{ config.SITE_NAME }}{% endblock %}
+{% block metatags %}
+{% if search.term %}
+<meta property="og:description" content="Search for '{{ search.term }}'">
+{% else %}
+<meta property="og:description" content="{{ config.SITE_NAME }} homepage">
+{% endif %}
+{% endblock %}
 {% block body %}
 
 {% if search["term"] == '' %}

nyaa/templates/layout.html

@@ -11,6 +11,13 @@
 		<link rel="mask-icon" href="/static/pinned-tab.svg" color="#3582F7">
 		<link rel="alternate" type="application/rss+xml" href="{% if rss_filter %}{{ url_for('home', page='rss', _external=True, **rss_filter) }}{% else %}{{ url_for('home', page='rss', _external=True) }}{% endif %}" />
 
+		<meta property="og:site_name" content="{{ config.SITE_NAME }}">
+		<meta property="og:title" content="{{ self.title() }}">
+		<meta property="og:image" content="{% block meta_image %}/static/img/avatar/default.png{% endblock %}">
+		{% block metatags %}
+		{# Filled by children #}
+		{% endblock %}
+
 		<!-- Bootstrap core CSS -->
 		<!--
 			Note: This has been customized at http://getbootstrap.com/customize/ to

nyaa/templates/login.html

@@ -1,5 +1,8 @@
 {% extends "layout.html" %}
 {% block title %}Login :: {{ config.SITE_NAME }}{% endblock %}
+{% block metatags %}
+<meta property="og:description" content="Log in to {{ config.SITE_NAME }}!">
+{% endblock %}
 {% block body %}
 {% from "_formhelpers.html" import render_field %}
 

nyaa/templates/register.html

@@ -1,5 +1,8 @@
 {% extends "layout.html" %}
 {% block title %}Register :: {{ config.SITE_NAME }}{% endblock %}
+{% block metatags %}
+<meta property="og:description" content="Register to {{ config.SITE_NAME }}!">
+{% endblock %}
 {% block body %}
 {% from "_formhelpers.html" import render_field %}
 

nyaa/templates/upload.html

@@ -1,5 +1,8 @@
 {% extends "layout.html" %}
 {% block title %}Upload Torrent :: {{ config.SITE_NAME }}{% endblock %}
+{% block metatags %}
+<meta property="og:description" content="Upload a torrent to {{ config.SITE_NAME }}">
+{% endblock %}
 {% block body %}
 {% from "_formhelpers.html" import render_field %}
 {% from "_formhelpers.html" import render_upload %}

nyaa/templates/user.html

@@ -1,5 +1,14 @@
 {% extends "layout.html" %}
 {% block title %}{{ user.username }} :: {{ config.SITE_NAME }}{% endblock %}
+{% block meta_image %}{{ user.gravatar_url() }}{% endblock %}
+{% block metatags %}
+{% if search.term %}
+<meta property="og:description" content="Search for '{{ search.term }}' in torrents uploaded by {{ user.username }}">
+{% else %}
+<meta property="og:description" content="Torrents uploaded by {{ user.username }}">
+{% endif %}
+{% endblock %}
+
 {% block body %}
 {% from "_formhelpers.html" import render_menu_with_button %}
 

nyaa/templates/view.html

@@ -1,5 +1,9 @@
 {% extends "layout.html" %}
 {% block title %}{{ torrent.display_name }} :: {{ config.SITE_NAME }}{% endblock %}
+{% block metatags %}
+{% set uploader_name = torrent.user.username if (torrent.user and not torrent.anonymous) else 'Anonymous' %}
+<meta property="og:description" content="{{ category_name(torrent.sub_category.id_as_string) }} | {{ torrent.filesize | filesizeformat(True) }} | Uploaded by {{ uploader_name }} on {{ torrent.created_time.strftime('%Y-%m-%d') }}">
+{% endblock %}
 {% block body %}
 {% from "_formhelpers.html" import render_field %}
 <div class="panel panel-{% if torrent.deleted %}deleted{% elif torrent.remake %}danger{% elif torrent.trusted %}success{% else %}default{% endif %}">