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

let socket: Socket | null = null;

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

export function connectSocket(): Socket {
  if (socket?.connected) {
    return socket;
  }

  const token = getToken();
  socket = io(window.location.origin, {
    auth: { token },
    transports: ['websocket', 'polling'],
    reconnection: true,
    reconnectionAttempts: 10,
    reconnectionDelay: 1000,
  });

  socket.on('connect', () => {
    console.log('[socket] connected:', socket?.id);
  });

  socket.on('disconnect', (reason) => {
    console.log('[socket] disconnected:', reason);
  });

  socket.on('connect_error', (err) => {
    console.error('[socket] connection error:', err.message);
  });

  return socket;
}

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

export { Socket };