protected override async Task Handle(UpdateProductCommand request, CancellationToken cancellationToken)
{
var product = await _uow.ProductRepository.GetWithCategoriesAsync(request.ProductId);
_mapper.Map(request.ProductDto, product); //why we use automapper directly but create an abstraction for entity framework?
var newCategoryIds = request.ProductDto.CategoryIds;
var currentCategoryIds = product.ProductCategories.Select(x => x.CategoryId).ToList();
//delete not existing in DTO categories
foreach (var category in product.ProductCategories
.Where(x => !newCategoryIds.Contains(x.CategoryId)).ToList())
{
product.ProductCategories.Remove(category);
}
//new categories
foreach (var categoryId in newCategoryIds.Except(currentCategoryIds))
{
product.ProductCategories.Add(new ProductCategory
{
CategoryId = categoryId,
ProductId = product.Id
});
}
_uow.ProductRepository.Update(product); // update ModifiedAt and ModifiedBy properties
await _uow.SaveChangesAsync();
}
protected override async Task Handle(DeleteProductCommand request, CancellationToken cancellationToken)
{
var product = await _uow.ProductRepository.GetWithCategoriesAsync(request.ProductId);
_uow.ProductCategoryRepository.RemoveRange(product.ProductCategories);
_uow.ProductRepository.Remove(product);
await _uow.SaveChangesAsync();
}