{% comment %}

Include this partial in a head section to include basic Open Graph metadata.
Pass a variable `NAME` to give a value for the `og:NAME` property.

These properties are only listed if you give a value for them:

* url: A URL string that includes at least an absolute path.  This partial
  will fill in a default scheme and host if needed.
* title: A string.  Tags are stripped, then the rest is assumed HTML-safe.
* description: A string.  Tags are stripped, then the rest is assumed
  HTML-safe.

These properties are always included.  You can override them but you
normally shouldn't need to:

* type: Default "website".
* locale: Default "en_US".
* site_name: Default "Software Freedom Conservancy"
* twitter_site: The name of the Twitter account that publishes this page.
  Default "@conservancy"

{% endcomment %}

{# This partial needs work before other cards besides "summary" are supported. #}
<meta property="twitter:card" content="summary">
<meta property="twitter:site" content="{{ twitter_site|default:"@conservancy" }}">

<meta property="og:type" content="{{ type|default:"website" }}">
<meta property="og:locale" content="{{ locale|default:"en_US" }}">
<meta property="og:site_name" content="{{ site_name|default:"Software Freedom Conservancy" }}">

{% if url %}
{% load fill_url %}
<meta property="og:url" content="{{ url|fill_url:host_url }}">
{% endif %}

{% if title %}
<meta property="og:title" content="{{ title|striptags|safe }}">
{% endif %}

{% if description %}
<meta property="og:description" content="{{ description|striptags|safe }}">
{% endif %}