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

namespace DocumentService.Application.ValidatePdf.Queries;

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

/// <summary>
/// Handler for ValidatePdfQuery
/// </summary>
public class ValidatePdfQueryHandler(IPdfProcessor pdfProcessor) 
    : IRequestHandler<ValidatePdfQuery, PdfValidationResult>
{
    public async Task<PdfValidationResult> Handle(ValidatePdfQuery request, CancellationToken cancellationToken)
    {
        return await pdfProcessor.ValidateAsync(request.PdfStream);
    }
}