exports.registerNewUser = (userObject, emit) => {
  checkAccounts(userObject.username, (success) => {
    if (success) {
      createPasswordHash(userObject.password, userObject.username.length, (hashPassword) => {
        Users.create({

          ID: NaN,
          name: userObject.username,
          email: userObject.email,
          password: hashPassword

        }).then(res => {
          users.push(new User({

            ID: res.ID,
            name: res.name,
            email: res.email,
            password: res.password

          })
          )
        })

        console.log('Registered new user', users)
        // emit('Your account is successfully registered')
      })
    } else {
      // emit('Failure to register user: Username already taken')
    }
  })
}

function checkAccounts (username, cb) {
  let success = true

  for (let account of users) {
    if (account != null) {
      if (account.name === username) {
        console.log('username already exists')
        success = false
      } else {
        cb(success)
      }
    }
    console.log('username available')
    cb(success)
  }
}

function createPasswordHash (plain, saltRound, store) {
  bcrypt.genSalt(saltRound).then(salt => {
    return bcrypt.hash(plain, salt)
  }).then(hash => {
    store(hash)
  }).catch(err => { console.error(err) })
}

function verifyPassword (test, hash) {
  bcrypt.compare(test, hash).then(res => {
    console.log('verified:', res)
    return res
  }).catch(err => { console.error(err) })
}