# nginx reverse proxy template for the computer stack.
# scripts/server-deploy.sh renders __DOMAIN__ and __WEB_PORT__ (the server's
# WEB_HOST_PORT binding) into the installed site config. The Go API is reached
# only through web, as in local dev. TLS certificates come from certbot
# (Let's Encrypt); see scripts/deploy.sh.

server {
    listen 80;
    listen [::]:80;
    server_name __DOMAIN__;
    return 301 https://$host$request_uri;
}

server {
    listen 443 ssl;
    listen [::]:443 ssl;
    http2 on;
    server_name __DOMAIN__;

    ssl_certificate     /etc/letsencrypt/live/__DOMAIN__/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/__DOMAIN__/privkey.pem;
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_session_cache shared:SSL:10m;
    ssl_session_timeout 1h;
    ssl_prefer_server_ciphers off;

    # Security headers (review CFG-2): HSTS, frame protection.
    add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;
    add_header X-Frame-Options "DENY" always;
    add_header X-Content-Type-Options "nosniff" always;
    add_header Referrer-Policy "strict-origin-when-cross-origin" always;
    # CSP is deliberately NOT set here (review CR-10): the Next app emits a
    # per-response nonce-based Content-Security-Policy from web/middleware.ts,
    # which is what allows the App Router's inline bootstrap scripts to run.
    # A second nginx-level CSP would intersect with it and strip the nonce,
    # breaking hydration. nginx only passes the app's header through.

    location / {
        proxy_pass http://127.0.0.1:__WEB_PORT__;
        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;
        # WebSocket upgrade (harmless when unused).
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_read_timeout 75s;
    }
}