map $http_upgrade $connection_upgrade {
    default upgrade;
    "" close;
}

server_tokens off;

upstream wagtail_backend {
    server backend:8000;
    keepalive 16;
}

upstream astro_frontend {
    server frontend:4321;
    keepalive 16;
}

server {
    listen 80 default_server;
    server_name _;

    return 404;
}

server {
    listen 80;
    server_name azionelab.org;

    client_max_body_size 10m;

    proxy_http_version 1.1;
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Forwarded-Proto $scheme;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection $connection_upgrade;

    add_header X-Content-Type-Options "nosniff" always;
    add_header Referrer-Policy "strict-origin-when-cross-origin" always;

    location ~ ^/(admin|api|documents|health|media|static)(/|$) {
        proxy_pass http://wagtail_backend;
    }

    location / {
        proxy_pass http://astro_frontend;
    }
}