using FluentValidation;

namespace DocumentOperator.Application.ValidatePdfA.Validators;

/// <summary>
/// Validator for ValidatePdfAQuery
/// Ensures exactly ONE input format is provided (PdfBytes XOR Base64Pdf)
/// </summary>
public class ValidatePdfAQueryValidator : AbstractValidator<Queries.ValidatePdfAQuery>
{
    public ValidatePdfAQueryValidator()
    {
        RuleFor(x => x)
            .Must(x => (x.PdfBytes != null && x.PdfBytes.Length > 0) ^ 
                       !string.IsNullOrWhiteSpace(x.Base64Pdf))
            .WithMessage("Either PdfBytes or Base64Pdf must be provided, but not both");
    }
}