namespace New.Domain;

/// <summary>
/// Thrown whenever a domain invariant is violated - by native creation of a
/// <see cref="RegistrationApplication"/>, or by the legacy mapper feeding data
/// through the same validating constructors/factories during adoption.
///
/// <see cref="Invariant"/> is a short, stable, machine-friendly code (e.g.
/// "Bsn.ElevenProof", "Assessment.MotivationTooShort") that callers such as
/// New.Api can surface directly in a 422 response body without needing to
/// parse the human-readable <see cref="Exception.Message"/>.
/// </summary>
public sealed class DomainInvariantViolationException : Exception
{
    public string Invariant { get; }

    public DomainInvariantViolationException(string invariant, string message)
        : base(message)
    {
        Invariant = invariant;
    }
}