PrimerFormRedirectScope

@MainActor
public protocol PrimerFormRedirectScope: PrimerPaymentMethodScope where State == PrimerFormRedirectState

public struct PrimerFormRedirectState: Equatable {
  public enum Status: Equatable {
    case ready
    case submitting
    case awaitingExternalCompletion
    case success
    case failure(String)
  }

  var status: Status
  var fields: [PrimerFormFieldState]
  var isSubmitEnabled: Bool        // Computed: all fields valid
  var pendingMessage: String?
  var surchargeAmount: String?

  // Convenience
  var otpField: PrimerFormFieldState?
  var phoneField: PrimerFormFieldState?
  var isLoading: Bool
  var isTerminal: Bool
}

public struct PrimerFormFieldState: Equatable, Identifiable {
  public enum FieldType: String, Equatable, Sendable {
    case otpCode       // BLIK 6-digit code
    case phoneNumber   // MBWay phone number
  }

  public enum KeyboardType: Equatable, Sendable {
    case numberPad
    case phonePad
    case `default`
  }

  var id: String { fieldType.rawValue }
  let fieldType: FieldType
  var value: String
  var isValid: Bool
  var errorMessage: String?
  let placeholder: String
  let label: String
  let helperText: String?
  let keyboardType: KeyboardType
  let maxLength: Int?
  var countryCodePrefix: String?
  var dialCode: String?
}