strangler-fig-demo/new/src/New.Domain/ValueObjects/PersonName.cs

namespace New.Domain.ValueObjects;

/// <summary>
/// The applicant's name. Deliberately called <c>PersonName</c>/<c>Applicant</c>
/// rather than the case-framework's "Participant" - see the false-cognates
/// table in the migration design notes.
/// </summary>
public sealed record PersonName
{
    public string Surname { get; }
    public string Initials { get; }

    public PersonName(string surname, string initials)
    {
        if (string.IsNullOrWhiteSpace(surname))
        {
            throw new DomainInvariantViolationException(
                "PersonName.SurnameRequired",
                "A surname is required.");
        }

        if (string.IsNullOrWhiteSpace(initials))
        {
            throw new DomainInvariantViolationException(
                "PersonName.InitialsRequired",
                "Initials are required.");
        }

        Surname = surname;
        Initials = initials;
    }
}