server {
    listen 80;
    listen [::]:80;
    server_name qr.ireng.uk;

    location /.well-known/acme-challenge/ {
        root /var/www/html;
    }

    location / {
        return 301 https://$host$request_uri;
    }
}

server {
    listen 443 ssl;
    listen [::]:443 ssl;
    http2 on; # Modern way to enable HTTP/2
    server_name qr.ireng.uk;

    ssl_certificate /etc/letsencrypt/live/qr.ireng.uk/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/qr.ireng.uk/privkey.pem;

    # Security headers
    add_header X-Frame-Options "SAMEORIGIN";
    add_header X-XSS-Protection "1; mode=block";
    add_header X-Content-Type-Options "nosniff";
    add_header Referrer-Policy "no-referrer-when-downgrade";
    add_header Content-Security-Policy "default-src 'self' http: https: data: blob: 'unsafe-inline'";

    location / {
        proxy_pass http://localhost:3111;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        proxy_set_header Host $host;
        proxy_cache_bypass $http_upgrade;
        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;
    }

    client_max_body_size 10M;
}