User.js

const mongoose = require('mongoose');

// *** NOTE: You never want to store a plain password in production! If someone gains access to your database, they will have access to all the users passwords.
// You can use something like PassportJS to handle saving passwords 
const UserSchema = new mongoose.Schema({
    username: {
        type: String,
        default: '',
    },
    password: {
        type: String,
        default: '',
    },
    email: {
        type: String,
        default: 'N/A',
    },
    registerDate: {
        type: Date,
        default: Date.now(),
    },
});

module.exports = mongoose.model('User', UserSchema);