import { io } from "socket.io-client";
import { v4 as uuidv4 } from "uuid";

// FIXME: This file should handle the sockets and the subscriptions
// Exports must include
// - initSocket (initialize the connection to the socket server)
// - socket (variable resulting of initSocket function)

// Functions may include:
// - subscribe (subscribe to a room's stream or chat)
// - unsubscribe (unsubscribe from a room's stream or chat)
// - sendMessage (send a message to a room's chat)

let socket = null;
const uuid = uuidv4();

/**
 * Initializes the socket when authenticated
 * returns {Promise<void>}
 */
async function initSocket() {
    if (socket !== null) {
        console.warn("Blocked attempt to re-init socket connection");
        return;
    }

    console.debug("Initializing socket connection");
    const token = localStorage.getItem("token");

    const host = import.meta.env.VITE_HOST;
    const port = import.meta.env.VITE_PORT;
    const wsUri = "ws://" + host + (port ? ":" + port : "");

    socket = io(wsUri, {
        reconnectionDelayMax: 10000,
        extraHeaders: {
            Authorization: "Bearer " + token,
        },
    });

    console.debug("Socket active: " + socket.active);
    return;
}

// TODO
async function subscribe(room) {
    if (!room) {
        room = "epi-place";
    }

    // console.warn("Skipping room susbscription (not implemented)")
    const msg = {
        id: uuid,
        method: "subscription",
        params: {
            path: "rooms.canvas.getStream" | "rooms.getChat",
            input: {
                json: {
                    roomSlug: room,
                },
            },
        },
    };

    socket.send(msg);
}

// async function unsubscribe() {

// }
// async function sendMessage() {

// }

export { initSocket, socket };