server {
    listen 80;
    root /usr/share/nginx/html;
    index index.html;

    # SPA fallback
    location / {
        try_files $uri $uri/ /index.html;
    }

    # Proxy to backend API (avoids CORS)
    location /api/ {
        proxy_pass http://5.0.0.181:8090/api/;
        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 proxy
    location /ws/ {
        proxy_pass http://5.0.0.181:8090/ws/;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_set_header Host $host;
        proxy_read_timeout 3600s;
    }

    # Service Worker e manifest — NUNCA cachear (browser precisa verificar updates)
    location ~* (sw\.js|workbox-.*\.js|registerSW\.js|manifest\.webmanifest)$ {
        expires -1;
        add_header Cache-Control "no-cache, no-store, must-revalidate";
        add_header Pragma "no-cache";
    }

    # Cache assets versionados por hash (imutáveis)
    location /assets/ {
        expires 1y;
        add_header Cache-Control "public, immutable";
    }

    # Cache outros estáticos (ícones, fontes)
    location ~* \.(png|svg|ico|woff2)$ {
        expires 30d;
        add_header Cache-Control "public";
    }

    gzip on;
    gzip_types text/plain text/css application/json application/javascript text/xml application/xml;
}