# Rate limiting: 20 req/s por IP para /api/, burst de 40
limit_req_zone $binary_remote_addr zone=api_limit:10m rate=20r/s;

# HTTP -> HTTPS
server {
  listen 80;
  listen [::]:80;
  server_name resetea.net;
  return 301 https://$host$request_uri;
}

# HTTPS
server {
  listen 443 ssl http2;
  listen [::]:443 ssl http2;
  server_name resetea.net;

  server_tokens off;

  root /var/www/resetea.net/public;
  index index.html;

  ssl_certificate     /etc/letsencrypt/live/resetea.net/fullchain.pem;
  ssl_certificate_key /etc/letsencrypt/live/resetea.net/privkey.pem;
  include /etc/letsencrypt/options-ssl-nginx.conf;
  ssl_dhparam         /etc/letsencrypt/ssl-dhparams.pem;

  # ── Security headers (todos los paths) ───────────────────────────
  add_header Strict-Transport-Security  "max-age=31536000; includeSubDomains; preload" 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;
  add_header Permissions-Policy         "camera=(), microphone=(), geolocation=(), payment=(), usb=(), interest-cohort=()" always;
  add_header Content-Security-Policy    "default-src 'none'; script-src 'self' 'unsafe-inline'; style-src 'self' 'unsafe-inline'; font-src 'self'; img-src 'self' data:; connect-src 'self'; frame-ancestors 'none'; base-uri 'self'; form-action 'self';" always;
  add_header Cross-Origin-Opener-Policy "same-origin" always;

  # ── Proxy al backend Node.js ──────────────────────────────────────
  location /api/ {
    limit_req zone=api_limit burst=40 nodelay;

    proxy_pass         http://127.0.0.1:8787;
    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_read_timeout 15s;
    proxy_connect_timeout 5s;
    proxy_hide_header  X-Powered-By;
  }

  location / {
    try_files $uri $uri/ =404;
  }
}