Not able to connect to rooms with socket.io - node.js

Question

I'm using socket io in two places in the app:
emiting offers on the main page that everyone can see
emiting chat messages only between two users based on order_id
I was able to set up first use case but not the second. When creating a new message, response status is 500 after hitting the socket part in the controller.
index.js
const serverIO = server.listen(
port,
console.log(`Listening on Port ${port}`)
);
const io = require("./socket").init(serverIO);
io.on("connection", (socket) => {
socket.join("some room");
console.log("cient connected");
});
socket.js
let io;
module.exports = {
init: (httpServer) => {
io = require("socket.io")(httpServer);
return io;
},
getIO: (socket) => {
if (!io) {
throw new Error("Socket.io not initialized!");
}
console.log("socket", socket());
return io;
},
};
chatController.js
const io = require("../socket");
const chatModel = require("./chatModel.js");
exports.createChat = async (req, res) => {
try {
const savedMessage = await chatModel.saveMessage(req.body);
if (!savedMessage) {
return res.status(400).json({
errorMessage: "Something went wrong with your chat request",
});
}
io.getIO().socket.to(req.body.order_id).emit("newMessage", { action: "create", message: savedMessage });
return res.status(200).json(savedMessage);
} catch (error) {
return res.status(500).json({
errorMessage: error,
});
}
};
on the client, I'm listening like this:
Chat.js
useEffect(() => {
const socket = openSocket(baseURL);
socket.on("newMessage", ({ room, data }) => {
console.log("room", room); //not being reached
if (data.action === "create") {
dispatch(addMessage(...data.message));
}
});
}, []);
I tried adding the boilerplate code from documentation but that didn't seem to work.
io.on('connection', socket => {
socket.join('some room');
});
How can I join rooms based on orderId and listen to said room on the client?

Answer 1

Was able to reach a working solution (chat messages are being broadcast only to the intended recipients)but don't know if it's optimal or efficient.
added socket.join in my index.js file
io.on("connection", (socket) => {
socket.on("joinRoom", (room) => {
console.log("joined room");
socket.join(room);
});
console.log("cient connected");
});
modified my controller
io.getIO().to(req.body.order_id).emit("newMessage", {
action: "create",
message: savedMessage,
});
And on the front end, on mount, I'm joining a room and listening for newMessage from server.
useEffect(() => {
const socket = openSocket(baseURL);
socket.emit("joinRoom", orderId);
socket.on("newMessage", (data) => {
console.log("data", data);
if (data.action === "create") {
dispatch(addMessage(...data.message));
}
});
}, []);