public async Task <Dal.Entity.Product> AddProduct(Dal.Entity.Product product)
{
//If product is invalid, throw service exceptions
ValidateProduct(product);
await GenerateProductSlug(product);
await _unitOfWork.ProductRepository.Add(product);
await _unitOfWork.SaveChangesAsync();
return(await GetById(product.Id));
}
private async Task GenerateProductSlug(Dal.Entity.Product product)
{
var generatedSlug = SlugExtenstions.ToUrlSlug(product.Title);
var slug = generatedSlug;
if (await _unitOfWork.ProductRepository.GetAllAsQueryable().AnyAsync(p => p.Slug == generatedSlug))
{
var existsSlugCount = await _unitOfWork.ProductRepository.GetAllAsQueryable().CountAsync(p => p.Slug == generatedSlug);
slug = SlugExtenstions.ToUrlSlug($"{product.Title}-{existsSlugCount}");
}
product.Slug = slug;
}
private void ValidateProduct(Dal.Entity.Product product)
{
if (product == null)
{
throw new ArgumentNullException(nameof(product));
}
if (!product.Images.Any())
{
throw new ServiceException("Product must have at least one image");
}
if (!product.ProductVariants.Any())
{
throw new ServiceException("Product must have at least one variant");
}
}
public async Task <Dal.Entity.Product> UpdateProduct(Dal.Entity.Product product)
{
var currentProduct = await GetById(product.Id);
//Generate slug if title is changed
if (currentProduct.Title != product.Title || string.IsNullOrEmpty(currentProduct.Slug))
{
await GenerateProductSlug(product);
currentProduct.Slug = product.Slug;
}
currentProduct.CategoryId = product.CategoryId;
currentProduct.Title = product.Title;
currentProduct.Description = product.Description;
currentProduct.Vendor = product.Vendor;
currentProduct.Updated = DateTimeOffset.Now;
//---Update images---
//Add new images
var addedImages = product.Images.Where(image =>
currentProduct.Images.All(currentProductImage => currentProductImage.Name != image.Name))
.ToList();
//Remove, removed images
currentProduct.Images.RemoveAll(image =>
product.Images.All(updateProductImage => updateProductImage.Name != image.Name));
currentProduct.Images.AddRange(addedImages);
//---Update product variants---
//Add new product variants
currentProduct.ProductVariants.AddRange(product.ProductVariants.Where(productVariants => productVariants.Id == 0));
//Remove, removed product variants
currentProduct.ProductVariants.RemoveAll(productVariant =>
product.Id != 0 && product.ProductVariants.All(updatedProductVariant =>
updatedProductVariant.Id != productVariant.Id));
//Update product attributes
currentProduct.ProductSpecificationAttributes.AddRange(product.ProductSpecificationAttributes.Where(
attributeMapping => currentProduct.ProductSpecificationAttributes.All(
currentAttributeMapping => attributeMapping.ProductAttributeValueId != currentAttributeMapping.ProductAttributeValueId)));
currentProduct.ProductSpecificationAttributes.RemoveAll(
attributeMapping => product.ProductSpecificationAttributes.All(
currentAttributeMapping => attributeMapping.ProductAttributeValueId != currentAttributeMapping.ProductAttributeValueId));
//Update product variants
currentProduct.ProductVariants.ForEach(productVariant =>
{
var updatedProductVariant = product.ProductVariants.First(variant => variant.Id == productVariant.Id);
productVariant.Price = updatedProductVariant.Price;
productVariant.DefaultImage = updatedProductVariant.DefaultImage;
productVariant.Barcode = updatedProductVariant.Barcode;
productVariant.Sku = updatedProductVariant.Sku;
productVariant.CompareAtPrice = updatedProductVariant.CompareAtPrice;
productVariant.Quantity = updatedProductVariant.Quantity;
//Add new attribute mappings
productVariant.ProductVariantSpecificationAttributeMappings.AddRange(updatedProductVariant.ProductVariantSpecificationAttributeMappings.Where(
attributeMapping => productVariant.ProductVariantSpecificationAttributeMappings.All(
currentAttributeMapping => attributeMapping.ProductAttributeValueId != currentAttributeMapping.ProductAttributeValueId)));
//Remove, removed attribute mappings
productVariant.ProductVariantSpecificationAttributeMappings.RemoveAll(
attributeMapping => updatedProductVariant.ProductVariantSpecificationAttributeMappings.All(
currentAttributeMapping => attributeMapping.ProductAttributeValueId != currentAttributeMapping.ProductAttributeValueId));
});
//If product is invalid, throw service exceptions
ValidateProduct(currentProduct);
_unitOfWork.ProductRepository.Update(currentProduct);
await _unitOfWork.SaveChangesAsync();
return(await GetById(currentProduct.Id));
}
