using Microsoft.AspNetCore.Builder; using Props.Shop.Framework; namespace Props.Extensions { public static class ProductListingExtensions { public static float? GetRatingToPriceRatio(this ProductListing productListing) { int reviewFactor = productListing.ReviewCount.HasValue ? productListing.ReviewCount.Value : 1; int purchaseFactor = productListing.PurchaseCount.HasValue ? productListing.PurchaseCount.Value : 1; return (productListing.Rating * (reviewFactor > purchaseFactor ? reviewFactor : purchaseFactor)) / (productListing.LowerPrice * productListing.UpperPrice); } } }