//
//  UserRepository interface implemented instead of
//  directly interfacing mongo db client
//
async function updateUserService ({userRepository, updateParams}) {
  const { userId, userName, userEmail } = updateParams

  //  validate params
  if (!userId || !userName || !userEmail) {
    throw new InvalidParamsException('Missing required params')
  }

  const user = await userRepository.getById(userId)

  const updatedUser = updateUser(user, {
    userName,
    userEmail
  })

  await userRepository.save(updatedUser)
}