server {
    server_name faucet.lnpulse.app;

    client_max_body_size 10M;

    # Gzip compression
    gzip on;
    gzip_vary on;
    gzip_proxied any;
    gzip_comp_level 6;
    gzip_min_length 256;
    gzip_types
        text/plain
        text/css
        text/xml
        text/javascript
        application/json
        application/javascript
        application/xml
        application/rss+xml
        image/svg+xml;

    # Security headers
    add_header X-Content-Type-Options "nosniff" always;
    add_header X-Frame-Options "DENY" always;
    add_header Referrer-Policy "strict-origin-when-cross-origin" always;
    add_header Permissions-Policy "camera=(), microphone=(), geolocation=()" always;

    # Backend API — proxy to Node.js
    location /api/ {
        proxy_pass http://127.0.0.1:3001/;
        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 X-Forwarded-Host $host;
        proxy_read_timeout 30s;
        proxy_connect_timeout 10s;
    }

    # Health check passthrough
    location = /health {
        proxy_pass http://127.0.0.1:3001/health;
        proxy_set_header Host $host;
    }

    # Static assets with hashed filenames — long-term cache
    location /assets/ {
        alias /var/www/faucet.lnpulse.app/dist/assets/;
        expires 1y;
        add_header Cache-Control "public, immutable";
        access_log off;
    }

    # Frontend — serve static files with SPA fallback
    location / {
        root /var/www/faucet.lnpulse.app/dist;
        try_files $uri $uri/ /index.html;

        # Short cache for HTML (re-validate on each visit)
        location ~* \.html$ {
            add_header Cache-Control "no-cache";
        }
    }

    listen 443 ssl; # managed by Certbot
    ssl_certificate /etc/letsencrypt/live/faucet.lnpulse.app/fullchain.pem; # managed by Certbot
    ssl_certificate_key /etc/letsencrypt/live/faucet.lnpulse.app/privkey.pem; # managed by Certbot
    include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot
    ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot
}

server {
    if ($host = faucet.lnpulse.app) {
        return 301 https://$host$request_uri;
    } # managed by Certbot

    listen 80;
    server_name faucet.lnpulse.app;
    return 404; # managed by Certbot
}