passkeyErrorMessage function

String passkeyErrorMessage(Object error, { bool setup = false, })

Maps a ceremony / native-authenticator error to a user-facing message.

Implementation

String passkeyErrorMessage(Object error, {bool setup = false}) {
  final action = setup ? 'setup' : 'sign-in';
  if (error is PasskeyAuthCancelledException) {
    return 'Passkey $action was cancelled.';
  }
  if (error is DomainNotAssociatedException) {
    return 'Passkeys are not enabled for this app yet.';
  }
  if (error is NoCredentialsAvailableException) {
    return setup ? 'Passkey $action failed.' : 'No passkey found for this account.';
  }
  if (error is DeviceNotSupportedException) {
    return 'Passkeys are not supported on this device.';
  }
  if (error is ExcludeCredentialsCanNotBeRegisteredException) {
    return 'You already have a passkey on this device.';
  }
  // Surface the native error code for anything unmapped (e.g. an unhandled
  // iOS/Android authenticator error) so a failure is diagnosable on-screen.
  if (error is PlatformException) {
    return 'Passkey $action failed (${error.code}).';
  }
  return 'Passkey $action failed.';
}