upstream video_analysis_api {
    # With host networking, the API binds host:8007
    server 127.0.0.1:8007;
    keepalive 32;
}

server {
    listen 80;
    server_name _;

    # Timeouts (video processing + vLLM may take time)
    proxy_connect_timeout 60s;
    proxy_send_timeout    300s;
    proxy_read_timeout    600s;

    # Allow large video uploads
    client_max_body_size 500M;

    # Disable buffering for large uploads / streaming
    proxy_buffering off;
    proxy_request_buffering off;

    location /health {
        access_log off;
        proxy_pass http://video_analysis_api/health;
        proxy_http_version 1.1;

        proxy_set_header Host $host;
        proxy_set_header Connection "";
    }

    location / {
        proxy_pass http://video_analysis_api;
        proxy_http_version 1.1;

        # Forward client info
        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;

        # Streaming friendliness (even if not currently used)
        proxy_set_header Connection "";
        proxy_set_header X-Accel-Buffering no;

        proxy_cache off;
        chunked_transfer_encoding off;

        # Request correlation
        proxy_set_header X-Request-ID $request_id;
    }
}