subscriptionOfferPt1.swift

@available(iOS 12.2, *)
func showPromoUpsell() {

        Purchases.shared.entitlements { (entitlements, error) in

            // 1: - Get the discount for the product we want to offer
            //
            guard let product = entitlements?["pro_cat"]?.offerings["monthly_cats"]?.activeProduct else {
                print("Error finding monthly_cat product")
                return
            }
            guard let productDiscount = product.discounts.first(where: { $0.identifier == "promo_cat" }) else {
                print("Error finding promo_cat discount")
                return
            }

            // ... continued