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CategoryCacheEventConsumer.cs

using Nop.Core.Domain.Catalog;
using Nop.Services.Caching;
using Nop.Services.Discounts;

namespace Nop.Services.Catalog.Caching;

/// 
/// Represents a category cache event consumer
/// 
public partial class CategoryCacheEventConsumer : CacheEventConsumer
{
    /// 
    /// Clear cache data
    /// 
    /// Entity
    /// Entity event type
    /// A task that represents the asynchronous operation
    protected override async Task ClearCacheAsync(Category entity, EntityEventType entityEventType)
    {
        await RemoveByPrefixAsync(NopCatalogDefaults.CategoriesByParentCategoryPrefix, entity);
        await RemoveByPrefixAsync(NopCatalogDefaults.CategoriesByParentCategoryPrefix, entity.ParentCategoryId);
        await RemoveByPrefixAsync(NopCatalogDefaults.CategoriesChildIdsPrefix, entity);
        await RemoveByPrefixAsync(NopCatalogDefaults.CategoriesChildIdsPrefix, entity.ParentCategoryId);
        await RemoveByPrefixAsync(NopCatalogDefaults.CategoriesHomepagePrefix);
        await RemoveByPrefixAsync(NopCatalogDefaults.CategoryBreadcrumbPrefix);
        await RemoveByPrefixAsync(NopCatalogDefaults.CategoryProductsNumberPrefix);
        await RemoveByPrefixAsync(NopDiscountDefaults.CategoryIdsPrefix);

        if (entityEventType == EntityEventType.Delete)
        {
            await RemoveAsync(NopCatalogDefaults.SpecificationAttributeOptionsByCategoryCacheKey, entity);
            await RemoveByPrefixAsync(NopCatalogDefaults.ManufacturersByCategoryWithIdPrefix, entity);
        }

        if (entityEventType == EntityEventType.Delete || !entity.Published)
                await RemoveByPrefixAsync(NopCatalogDefaults.ProductCategoriesByProductWithoutIdPrefix);
        
        await RemoveAsync(NopDiscountDefaults.AppliedDiscountsCacheKey, nameof(Category), entity);

        await base.ClearCacheAsync(entity, entityEventType);
    }
}