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

    location = /health {
        access_log off;
        default_type text/plain;
        return 200 "ok\n";
    }

    location /api/ {
        proxy_pass http://api:8080;
        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;
        proxy_set_header Connection "";

        # SSE must stream each event immediately rather than buffering it.
        proxy_buffering off;
        proxy_cache off;
        proxy_read_timeout 1h;
        chunked_transfer_encoding off;
        add_header X-Accel-Buffering no always;
    }

    location / {
        try_files $uri $uri/ /index.html;
    }

    location ~* \.(?:js|css|svg|png|jpg|jpeg|webp|woff2?)$ {
        expires 1y;
        add_header Cache-Control "public, immutable";
        try_files $uri =404;
    }
}