How to handle Firebase auth errors on Unity

Question

I created a simple password login in my Unity app following the doc and it works fine, however I would like to handle the different kind of errors and since task.Exception doesn't return an error code I don't know how to proceed.

I found this but it doesn't seems to be the same Firebase version since the login method is different...

Answer 1

Firebase has a AuthError enum that tells you the meaning of each ErrorCode in the FirebaseException, the documentation is here: https://firebase.google.com/docs/reference/unity/namespace/firebase/auth

To get the error message in Spanish I am doing this:

public static string GetErrorMessage(Exception exception)
{
    Debug.Log(exception.ToString());
    Firebase.FirebaseException firebaseEx = exception as Firebase.FirebaseException;
    if (firebaseEx != null)
    {
        var errorCode = (AuthError)firebaseEx.ErrorCode;
        return GetErrorMessage(errorCode);
    }

    return exception.ToString();
}

private static string GetErrorMessage(AuthError errorCode)
{
    var message = "";
    switch (errorCode)
    {
        case AuthError.AccountExistsWithDifferentCredentials:
            message = "Ya existe la cuenta con credenciales diferentes";
            break;
        case AuthError.MissingPassword:
            message = "Hace falta el Password";
            break;
        case AuthError.WeakPassword:
            message = "El password es debil";
            break;
        case AuthError.WrongPassword:
            message = "El password es Incorrecto";
            break;
        case AuthError.EmailAlreadyInUse:
            message = "Ya existe la cuenta con ese correo electrónico";
            break;
        case AuthError.InvalidEmail:
            message = "Correo electronico invalido";
            break;
        case AuthError.MissingEmail:
            message = "Hace falta el correo electrónico";
            break;
        default:
            message = "Ocurrió un error";
            break;
    }
    return message;
}

Answer 2

I finally found a way to display only the error message using this:

FirebaseException error = task.Exception.InnerExceptions[0] as FirebaseException;
string errorMsg = error.ToString();

However it doesn't solve theoriginal problem, since it seems this is something missing in Firebase for Unity (at least for now).