userRouter.post('/singup', async (req, res) => {
  let errors = []
  const {managerID, fullName, password, password2} = req.body
  if (req.body.password != req.body.password2) {
    errors.push({ text: 'Passwords do not match' })
  }

  if (errors.length > 0) {
    res.render('user/signup', {
      errors,
      managerID,
      fullName,
      password
    });
  } else {
    const user = await User.findOne({managerID})
    if (user) {
      req.flash('error_msg', 'ID is already registered!')
      res.redirect('/user/signup')
    } else {
      const newUser = new User({
        managerID,
        fullName,
        password
      })

      bcrypt.genSalt(10, (err, salt) => {
        bcrypt.hash(newUser.password, salt, (err, hash) => {
          if (err) throw err
          newUser.password = hash
          await newUser.save()
          try {
            req.flash('success_msg', 'You are now registered and can log in');
            res.redirect('/user/login')
          } catch(err) {
            console.log(err)
            return
          }
        })
      })
    }
  }
})