export const signUpCommandBuilder = userV1ServiceBuilder
  .getCommandBuilder('signUp', 'registers a new user at our product')
  .setSuccessEventName(ServiceEvent.NewUserRegistered)
  .addPayloadSchema(userV1SignUpInputPayloadSchema)
  .addParameterSchema(userV1SignUpInputParameterSchema)
  .addOutputSchema(userV1SignUpOutputPayloadSchema)
  .exposeAsHttpEndpoint('POST', 'user/signup')
  .setCommandFunction(async function (context, payload, _parameter) {
    const result = (await context.states.getState(StateStoreKey.Users)) as { [StateStoreKey.Users]: User[] | undefined }

    if (result.users?.some((user) => user.email === payload.email)) {
      throw new HandledError(StatusCode.BadRequest, 'the user already exists')
    }

    const user: User = {
      ...payload,
      userId: randomUUID(),
    }

    const users = result.users ?? []
    users.push(user)

    await context.states.setState(StateStoreKey.Users, users)

    // add your business logic here
    context.logger.info('new user added')

    return user
  })