#
# Default server (vhost) configuration.
#
server {
    # HTTP (plaintext) configuration.
    listen 80 default_server;
    listen [::]:80 default_server;

    # Set server_name to something that won't be matched (for default server).
    server_name _;

    # Redirect plaintext connections to HTTPS
    return 301 https://$host$request_uri;
}

server {
    # HTTPS (TLS) configuration.
    listen 443 ssl default_server;
    listen [::]:443 ssl default_server;
    ssl_certificate_key /etc/ssl/private/{{ ansible_fqdn }}_https.key;
    ssl_certificate /etc/ssl/certs/{{ ansible_fqdn }}_https.pem;

    # Set-up HSTS header for preventing downgrades for users that visited the
    # site via HTTPS at least once.
    add_header Strict-Transport-Security "max-age=31536000; includeSubDomains";

    # Set-up the serving of default page.
    root /var/www/default/;
    index index.html;

    # Set server_name to something that won't be matched (for default server).
    server_name _;

    location / {
        # Always point user to the same index page.
        try_files $uri /index.html;
    }

    {% if environment_indicator -%}
    # Show environment indicator on HTML pages.
    sub_filter_types text/html;
    sub_filter_once on;
    sub_filter "</body>" "
    <details open='true' style='position: fixed; left: 0; width: 100%; line-height: 1.5em; font-weight: bold; color: {{ environment_indicator.text_colour }};'>
        <summary style='background-color: {{ environment_indicator.background_colour }}; list-style-type: none; position: fixed; bottom: 5px; z-index: 999999;'>&#128896;&#128898;</summary>
        <div style='background-color: {{ environment_indicator.background_colour }}; width: 100%; text-align: center; position: fixed; bottom: 5px; z-index: 999998;'>{{ environment_indicator.text }}</div>
    </details>
";
    {% endif -%}
}