public IObservable <RecoveryOptionResult> Show(UserError userError)
{
IsBusy = false;
var error = userError as TwoFactorRequiredUserError;
Debug.Assert(error != null,
String.Format(CultureInfo.InvariantCulture, "The user error is '{0}' not a TwoFactorRequiredUserError", userError));
InvalidAuthenticationCode = error.RetryFailed;
TwoFactorType = error.TwoFactorType;
var ok = OkCommand
.Do(_ => IsBusy = true)
.Select(_ => AuthenticationCode == null
? RecoveryOptionResult.CancelOperation
: RecoveryOptionResult.RetryOperation)
.Do(_ => error.ChallengeResult = AuthenticationCode != null
? new TwoFactorChallengeResult(AuthenticationCode)
: null);
var resend = ResendCodeCommand.Select(_ => RecoveryOptionResult.RetryOperation)
.Do(_ => error.ChallengeResult = TwoFactorChallengeResult.RequestResendCode);
var cancel = CancelCommand.Select(_ => RecoveryOptionResult.CancelOperation);
return(Observable.Merge(ok, cancel, resend)
.Take(1)
.Do(_ => IsAuthenticationCodeSent = error.ChallengeResult == TwoFactorChallengeResult.RequestResendCode));
}