using FluentValidation;

namespace EnvelopeGenerator.Application.PdfSigning;

public class SignPdfByElementCommandValidator : AbstractValidator<SignPdfByElementCommand>
{
    public SignPdfByElementCommandValidator()
    {
        RuleFor(x => x)
            .Must(x => (x.Element is not null) ^ x.ElementId.HasValue)
            .WithMessage("Exactly one of Element or ElementId must be provided.");

        RuleFor(x => x.ElementId)
            .GreaterThan(0)
            .When(x => x.ElementId.HasValue)
            .WithMessage("ElementId must be greater than 0.");
    }
}