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

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

    # Cache-control: assets met hash in naam → lang; index.html → nooit
    location ~* \.(js|css|woff2?|ttf|eot|svg|png|jpg|ico|webp)$ {
        expires 1y;
        add_header Cache-Control "public, immutable";
        try_files $uri =404;
    }

    # Proxy API-calls naar de backend
    location /api/ {
        proxy_pass         http://backend: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;
    }

    # SPA fallback – stuur alle routes naar index.html
    location / {
        try_files $uri $uri/ /index.html;
        add_header Cache-Control "no-store, no-cache, must-revalidate";
    }
}