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

    # Gzip
    gzip on;
    gzip_types text/plain text/css application/json application/javascript text/xml application/xml image/svg+xml;

    # Résolveur DNS Docker — résolution à la requête, pas au démarrage
    resolver 127.0.0.11 valid=10s ipv6=off;

    # Proxy API vers backend
    location /api/ {
        set $backend http://backend:8080;
        proxy_pass $backend;
        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_read_timeout 3600s;
        proxy_connect_timeout 10s;
        proxy_send_timeout 3600s;
    }

    # Service Worker — ne pas mettre en cache
    location = /sw.js {
        add_header Cache-Control "no-cache, no-store, must-revalidate";
        add_header Pragma "no-cache";
        expires 0;
    }

    # Assets statiques avec cache long
    location /assets/ {
        add_header Cache-Control "public, max-age=31536000, immutable";
    }

    # SPA — renvoyer index.html pour toutes les routes React
    location / {
        try_files $uri $uri/ /index.html;
        add_header Cache-Control "no-cache";
    }
}