Api/Netina.Repository/Handlers/Reviews/DeleteReviewCommandHandler.cs

namespace Netina.Repository.Handlers.Reviews;

public class DeleteReviewCommandHandler(IRepositoryWrapper repositoryWrapper)
    : IRequestHandler<DeleteReviewCommand, Guid>
{
    public async Task<Guid> Handle(DeleteReviewCommand request, CancellationToken cancellationToken)
    {
        var review = await repositoryWrapper.SetRepository<Review>().TableNoTracking
            .FirstOrDefaultAsync(r => r.Id == request.Id, cancellationToken);
        if (review == null)
            throw new AppException("Review not found", ApiResultStatusCode.NotFound);

        var product = await repositoryWrapper.SetRepository<Product>()
            .TableNoTracking
            .FirstOrDefaultAsync(p => p.Id == review.ProductId, cancellationToken);
        if (product != null)
        {
            product.RemoveRate(review.Rate);
            repositoryWrapper.SetRepository<Product>().Update(product);
            await repositoryWrapper.SaveChangesAsync(cancellationToken);
        }
        repositoryWrapper.SetRepository<Review>().Delete(review);
        await repositoryWrapper.SaveChangesAsync(cancellationToken);
        return review.Id;
    }
}