users.js

let users = [];

const addUser = ({ id, name, room }) => {
	name = name.trim().toLowerCase();
	room = room.trim().toLowerCase();

	const existingUser = users.find(
		(user) => user.name === name && user.room === room
	);

	if (existingUser) {
		return { error: "User already exists!" };
	}

	const user = {
		id,
		name,
		room,
	};

	users.push(user);
	
	return user;
};

const removeUser = (id) => {
	const index = users.findIndex((user) => user.id === id);

	if (index !== -1) {
		return users.splice(index, 1)[0];
	}
};

const getUserById = (id) => {
	const user = users.find((user) => user.id === id);
	return user;
};

const getRoomUsers = (room) => {
	const roomUsers = users.filter((user) => user.room.trim().toLowerCase() === room.trim().toLowerCase());
	return roomUsers;
};

module.exports = {
	addUser,
	removeUser,
	getUserById,
	getRoomUsers,
};