user.js

const mongoose = require ('mongoose');
const bcrypt = require('bcryptjs');
const config = require ('../config/database');

//User Schema

const UserSchema = mongoose.Schema({
name : {
  type: String,
},
  email : {
  type : String,
  required : true
},
username : {
  type : String,
  required : true
},
password : {
  type : String,
  required : true
  }
});

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

module.exports.getUserbyID = function (id, callback) {
  User.findbyID(id, callback);
}

module.exports.getUserByUsername = function (username, callback) {
  const query  = {username: username}
  User.findOne(query, callback);
}

module.exports.addUser = function (newUser, callback){
  bcrypt.genSalt(10,(err,salt) => {
    bcrypt.hash(newUser.password, salt, (err,hash) =>{
      if (err) throw err;
      newUser.password = hash;
      newUser.save (callback)
    });
  })

}