worker_processes auto;
pid /tmp/nginx.pid;

events {
    worker_connections 1024;
}

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

    # Temp paths writable without root
    client_body_temp_path /tmp/client_body;
    proxy_temp_path       /tmp/proxy;
    fastcgi_temp_path     /tmp/fastcgi;
    uwsgi_temp_path       /tmp/uwsgi;
    scgi_temp_path        /tmp/scgi;

    sendfile    on;
    tcp_nopush  on;
    keepalive_timeout 65;

    # Increase timeouts for long-running pipeline (~5 min max)
    proxy_connect_timeout 300s;
    proxy_send_timeout    300s;
    proxy_read_timeout    300s;

    # Larger buffers for clinical reports
    proxy_buffer_size     128k;
    proxy_buffers         4 256k;
    proxy_busy_buffers_size 256k;

    map $http_upgrade $connection_upgrade {
        default upgrade;
        ''      close;
    }

    server {
        listen 7860;
        server_name _;

        # ── WebSocket: /ws/* → FastAPI backend ──────────────────
        location /ws/ {
            proxy_pass http://127.0.0.1:8002;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection $connection_upgrade;
            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_read_timeout 600s;
            proxy_send_timeout 600s;
        }

        # ── REST API: /api/* → FastAPI backend ──────────────────
        location /api/ {
            proxy_pass http://127.0.0.1:8002;
            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;
        }

        # ── Everything else → Next.js frontend ─────────────────
        location / {
            proxy_pass http://127.0.0.1:3000;
            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;
        }

        # ── Next.js static assets ──────────────────────────────
        location /_next/ {
            proxy_pass http://127.0.0.1:3000;
            proxy_set_header Host $host;
        }
    }
}