upstream video_analysis_api {
    server didiAI-video-api:8011;
    keepalive 32;
}

server {
    listen 80;
    server_name _;

    proxy_connect_timeout ${NGINX_CONNECT_TIMEOUT};
    proxy_send_timeout ${NGINX_SEND_TIMEOUT};
    proxy_read_timeout ${NGINX_READ_TIMEOUT};

    # Larger uploads (videos)
    client_max_body_size 500M;

    location /health {
        access_log off;
        proxy_pass http://video_analysis_api/health;
        proxy_http_version 1.1;
        proxy_set_header Host $host;
    }

    location / {
        proxy_pass http://video_analysis_api;
        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;

        # SSE-friendly (safe even if you don't stream yet)
        proxy_set_header Connection '';
        proxy_set_header X-Accel-Buffering no;
        proxy_buffering off;
        proxy_cache off;
        chunked_transfer_encoding off;

        proxy_set_header X-Request-ID $request_id;
    }
}