user  nginx;
worker_processes  auto;

error_log  /dev/stderr  warn;
pid        /var/run/nginx.pid;

events {
    worker_connections  1024;
}

http {
    include       /etc/nginx/mime.types;
    default_type  application/octet-stream;

    access_log  /dev/stdout;

    sendfile        on;
    tcp_nopush      on;
    keepalive_timeout  65;
    server_tokens   off;

    # Compression: takes the main JS bundle from ~1.9 MB down to ~530 kB on the wire
    gzip              on;
    gzip_vary         on;
    gzip_proxied      any;
    gzip_comp_level   6;
    gzip_min_length   1024;
    gzip_types
        text/plain
        text/css
        text/xml
        text/javascript
        application/javascript
        application/json
        application/xml
        image/svg+xml
        font/woff
        font/woff2;

    server {
        listen 80;
        server_name _;

        root  /usr/share/nginx/html;
        index index.html;

        # Vite writes content-hashed filenames here, so they can be cached forever.
        # Only add_header is used — combining it with `expires` emits two
        # conflicting Cache-Control headers.
        location /assets/ {
            add_header Cache-Control "public, max-age=31536000, immutable";
            access_log off;
        }

        # index.html must be revalidated every time or deploys won't take effect
        location = /index.html {
            add_header Cache-Control "no-cache";
        }

        location / {
            # This line forces Nginx to pass routing back to React Router
            try_files $uri $uri/ /index.html;
        }
    }
}