Using users

usingUsers.scala

//creating
val maybeUser: Either[RefinedTypeError, User] = User.build(input.id, input.name)

//accesing
val id = user.id.value
val name = user.name.value


//create user in the UserService needs a for comprehension
def createUser(id: Int, name: String): ZIO[UserPersistence, AppError, User] =
  for {
    user   <- ZIO.fromEither(User.build(id, name))
    stored <- RIO.accessM[UserPersistence](_.get.create(user))
  } yield stored
  
  
//API layer: return a 400 with wrong input
case request @ POST -> Root =>
  request.decode[UserInput] { userInput =>
    UserService
      .createUser(userInput.id, userInput.name)
      .foldM(
        {
          case error: DBError          => ServiceUnavailable(error.message)
          case error: RefinedTypeError => BadRequest(error.message) ///THIS IS NEW
          case other                   => InternalServerError(other.message)
        },
        Created(_)
      )
  }