user.js

const users = [];

const addUser = ({ id, name, room }) => {

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

  if (!name || !room) return { error: "Username and room are required." };

  if (existingUser) {
    return { error: "Username is taken" };
  }

  const user = { id, name, room };

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

const removeUser = (id) => {
  const index = users.findIndex((user) => {
    // console.log(user);
    return user.id === id;
  });

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

const getUser = (id) => users.find((user) => user.id === id);

const getUsersInRoom = (room) => users.filter((user) => user.room === room);

module.exports = { addUser, removeUser, getUser, getUsersInRoom };