{% extends "base.html" %}

{#- Link-preview tags: what a chat app or a social network shows for a shared
    link.  The card image is one static file, docs/assets/social-card.png. -#}
{% block extrahead %}
  {% set title = config.site_name %}
  {% if page and page.meta and page.meta.title %}
    {% set title = page.meta.title ~ " - " ~ config.site_name %}
  {% elif page and page.title and not page.is_homepage %}
    {% set title = page.title | striptags ~ " - " ~ config.site_name %}
  {% endif %}
  {% set description = config.site_description %}
  {% if page and page.meta and page.meta.description %}
    {% set description = page.meta.description %}
  {% endif %}
  {% set image = config.site_url ~ "assets/social-card.png" %}
  <meta property="og:type" content="website">
  <meta property="og:site_name" content="{{ config.site_name }}">
  <meta property="og:title" content="{{ title }}">
  <meta property="og:description" content="{{ description }}">
  {% if page and page.canonical_url %}
    <meta property="og:url" content="{{ page.canonical_url }}">
  {% endif %}
  <meta property="og:image" content="{{ image }}">
  <meta property="og:image:type" content="image/png">
  <meta property="og:image:width" content="1280">
  <meta property="og:image:height" content="640">
  <meta name="twitter:card" content="summary_large_image">
  <meta name="twitter:title" content="{{ title }}">
  <meta name="twitter:description" content="{{ description }}">
  <meta name="twitter:image" content="{{ image }}">
{% endblock %}