worker_processes auto;

events {
    worker_connections 1024;
}

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

    types {
        application/wasm wasm;
    }

    sendfile    on;
    tcp_nopush  on;
    gzip        on;
    gzip_types  text/plain text/css application/json application/javascript text/xml application/xml application/wasm;

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

        # Cache static assets
        location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff2?|ttf|wasm)$ {
            expires 30d;
            add_header Cache-Control "public, immutable";
        }

        # Proxy /api/ requests to the backend
        location /api/ {
            proxy_pass http://backend:3001;
            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 — serve index.html for all other routes
        location / {
            try_files $uri $uri/ /index.html;
        }
    }
}