Add opengraph support

config.yml-dist

 sitename: blog title here
 author: your name here
 rooturl: https://example.com/
+logo: avatar.png
 license: Creative Commons Attribution-ShareAlike

monopati.py

@@ -42,7 +42,10 @@ def generate_pages():
         html = template.render({'page': page,
                                 'author': cfg['author'],
                                 'sitename': cfg['sitename'],
-                                'license': cfg['license']})
+                                'license': cfg['license'],
+                                'logo': cfg['logo'],
+                                'rooturl': cfg['rooturl'],
+                                'link': page})
         with open(page, 'w') as file:
             file.write(html)
@@ -85,9 +88,12 @@ def generate_posts():
         except OSError:
             pass
+        images = []
         if 'files' in headers:
             files = headers['files'].split(', ')
             for file in files:
+                if (file.find('.png') != -1) or (file.find('.jpg') != -1):
+                    images.append(file)
                 copy2(path.join('posts/files/', file), postpath)
         link = '{0}/'.format(postpath)
@@ -104,7 +110,9 @@ def generate_posts():
             author=cfg['author'],
             sitename=cfg['sitename'],
             license=cfg['license'],
+            logo=cfg['logo'],
             content=content,
+            images=images,
             link=link
         )
@@ -133,6 +141,7 @@ def generate_archive(posts, tag_set):
     html = tpl.render(dict(
         sitename=cfg['sitename'],
         license=cfg['license'],
+        logo=cfg['logo'],
         title='blog',
         posts=posts
     ))
@@ -173,7 +182,8 @@ def generate_feeds(posts, tag_set):
         author=cfg['author'],
         rooturl=cfg['rooturl'],
         license=cfg['license'],
-	updated=updated
+        logo=cfg['logo'],
+        updated=updated
     )
     with open('feed.xml', 'w') as file:
         file.write(xml)

templates/base.html

@@ -4,10 +4,17 @@
     <meta charset="utf-8">
     <title>{{ sitename }}{% block title %}{% endblock title %}</title>
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <link href="/feed.xml" rel="alternate" type="application/rss+xml" title="{{ sitename }}">
+    <meta property="og:site_name" content="{{ sitename }}">
+    {% block meta %}
+      <meta property="og:title" content="{{ sitename }}">
+      <meta property="og:type" content="website">
+      <meta property="og:url" content="{{ rooturl }}{{ link }}">
+    {% endblock %}
+    <meta property="og:image" content="{{ rooturl }}static/img/{{ logo }}">
     <link rel="stylesheet" href="/static/css/lib/bootstrap.min.css">
     <link rel="stylesheet" href="/static/css/lib/bootstrap-theme.min.css">
     <link rel="stylesheet" href="/static/css/app.css">
-    <link href="/feed.xml" rel="alternate" type="application/rss+xml" title="{{ sitename }}">
     {% block css %}{% endblock %}
     <link rel="shortcut icon" href="/favicon.ico">
   </head>
@@ -20,7 +27,7 @@
           <div class="col-md-12 text-center">
             <p class="avatar">
               <a href="/">
-                <img src="/static/img/avatar.png" alt="{{ author }}" class="avatar img-circle" />
+                <img src="/static/img/{{ logo }}" alt="{{ author }}" class="avatar img-circle" />
               </a>
             </p>
             <h3>

templates/feed.xml

@@ -2,6 +2,10 @@
 <feed xmlns="http://www.w3.org/2005/Atom">
   <author>{{ author }}</author>
   <title>{{ sitename }}{{ tagtitle }}</title>
+  <link href="{{ rooturl }}feed.xml" rel="self" />
+  <link href="{{ rooturl }}" />
+  <icon>{{ rooturl }}favicon.ico</icon>
+  <logo>{{ rooturl }}static/img/{{ logo }}</logo>
   <updated>{{ updated }}</updated>
   {% for item in items %}
     <entry>

templates/post.html

@@ -2,6 +2,18 @@
 {% block title %} • {{ title }}{% endblock title %}
+{% block meta %}
+  <meta property="og:title" content="{{ title}}">
+  <meta property="og:type" content="article">
+  <meta property="og:url" content="{{ rooturl }}{{ link }}">
+  {% if images %}
+    {% for image in images %}
+      <meta property="og:image" content="{{ rooturl }}{{ link }}{{ image }}">
+    {% endfor %}
+  {% endif %}
+  <meta property="og:description" content="{{ content|striptags|truncate(300, True)|e }}">
+{% endblock %}
+
 {% block content %}
   <div class="container">
     <div class="row">