import { io, Socket } from 'socket.io-client';

const SOCKET_URL = process.env.NEXT_PUBLIC_API_URL || 'http://localhost:4000';
let socket: Socket | null = null;

export function getSocket(token: string): Socket {
  if (socket?.connected) return socket;
  socket = io(SOCKET_URL, {
    auth: { token },
    transports: ['websocket', 'polling'],
    reconnection: true,
    reconnectionAttempts: 10,
    reconnectionDelay: 1000,
    timeout: 20000,
    autoConnect: false,
  });
  return socket;
}

export function disconnectSocket(): void {
  if (socket) { socket.disconnect(); socket = null; }
}

export function getCurrentSocket(): Socket | null {
  return socket;
}