frontend/services/websocket/client.js

import { io } from "socket.io-client";

const SOCKET_URL =
    process.env.NEXT_PUBLIC_WS_URL ||
    "http://127.0.0.1:8000";

let socket = null;

export function connectSocket(token = null) {

    if (socket) return socket;

    socket = io(SOCKET_URL, {
        transports: ["websocket"],
        autoConnect: true,
        auth: token ? { token } : {}
    });

    return socket;
}

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

export function getSocket() {
    return socket;
}