using DocumentService.Application.Common.DTOs;
using DocumentService.Application.Common.Interfaces;
using MediatR;

namespace DocumentService.Application.ValidatePdfA.Queries;

/// <summary>
/// Query for PDF/A validation (Stream-based)
/// </summary>
public record ValidatePdfAQuery : IRequest<PdfAValidationResult>
{
    /// <summary>
    /// PDF as stream (caller is responsible for disposal)
    /// </summary>
    public required Stream PdfStream { get; init; }
}

/// <summary>
/// Handler for ValidatePdfAQuery
/// </summary>
public class ValidatePdfAQueryHandler(IPdfProcessor pdfProcessor) 
    : IRequestHandler<ValidatePdfAQuery, PdfAValidationResult>
{
    public async Task<PdfAValidationResult> Handle(ValidatePdfAQuery request, CancellationToken cancellationToken)
    {
        return await pdfProcessor.ValidatePdfAAsync(request.PdfStream);
    }
}