swifting.swift

Env.net.request(.signup, result:
  tap(AppId.init • ^\.[.registrationRequest] >>> assign(to: &Env.vars.id.app)) >>>
  select(\.[.registrationId], \.[.registrationRequest], or: .badRequest) >>>
  when(success: async(partial(presentBiometrics, __, __, succeed, fail)),
       failure: when(.noSession, createAccount, otherwise: fail)))

or:

Env.net.request(.signup, result:
  select(\.[.registrationId], \.[.registrationRequest], or: .badRequest) >>>
  tap { Env.vars.id.app = AppId(message: .init($0.1)) } >>>
  when(success: async(partial(presentBiometrics, __, __, succeed, fail)),
       failure: when(.noSession, createAccount, otherwise: fail)))

vs.

Env.net.request(.signup) { (result: Result<Dictionary<String, Any>, APIError>) in
  switch result {
  case .success(let json):
    let registrationIdKey = "registrationRequestId"
    let registrationRequestKey = "fidoRegistrationRequest"
    let optionalRegistrationId = json[registrationIdKey] as? String
    let optionalRegistrationRequest = json[registrationRequestKey] as? String

    guard
      let registrationId = optionalRegistrationId,
      let registrationRequest = optionalRegistrationRequest
    else {
      return fail()
    }

    Env.vars.id.app = AppId(message: .init(registrationRequest))
    DispatchQueue.main.async {
      presentBiometrics(
        id: registrationId,
        message: registrationRequest,
        success: succeed, failure: fail)
    }

  case .failure(.noSession):
    createAccount()

  case .failure:
    fail()
  }
}