worker_processes 1;
error_log /var/log/nginx/error.log warn;
pid /var/run/nginx.pid;

events {
    worker_connections 1024;
}

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

    sendfile on;
    keepalive_timeout 65;

    # Upstream: Node.js API + static frontend + WebSocket PTY
    upstream api {
        server 127.0.0.1:4000;
    }

    server {
        listen 80;
        server_name _;

        # WebSocket terminal — /shell-ws is handled by the Node.js backend
        location /shell-ws {
            proxy_pass http://api;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";
            proxy_set_header Host $host;
            proxy_read_timeout 7d;
        }

        # API routes
        location /api/ {
            proxy_pass http://api;
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
        }

        # Everything else → React SPA (served by same Node.js process)
        location / {
            proxy_pass http://api;
            proxy_http_version 1.1;
            proxy_set_header Host $host;
        }
    }
}
