Swift 3: In app purchase functionalities with several items - ios

Question

I try to implement in-app purchase functionalities with several permanent items in Swift 3 for my spritekit game. Everything is created on iTunes Connect, the bundle name is set and my 4 items are correctly declared in the iTunes Connect. The problem is about code inside Xcode. I use the tutorial from Raywenderlich.com here:
https://www.raywenderlich.com/122144/in-app-purchase-tutorial
This tutorial is made for just one item, but what about if we need more items ? (4 in my case). I try for 2 days to modify the code to manage more than one single item, without any success. I have modified the structure RageProducts with the following code:
import Foundation
public struct RageProducts {
public static let GirlfriendOfDrummerRage = "com.creaworks.FurryLight_Puzzles.Guitarist"
fileprivate static let productIdentifiers: Set<ProductIdentifier> = [RageProducts.GirlfriendOfDrummerRage]
// Initial declaration for one item
// public static let store = IAPHelper(productIds: RageProducts.productIdentifiers)
}
//New declaration for 4 items
public static let store = IAPHelper(productIds: Set(
[
GreenGrocerPurchase.AdRemoval,
GreenGrocerPurchase.NewShoppingLists_One,
GreenGrocerPurchase.NewShoppingLists_Five,
GreenGrocerPurchase.NewShoppingLists_Ten
].map { $0.productId }
))
func resourceNameForProductIdentifier(_ productIdentifier: String) -> String? {
return productIdentifier.components(separatedBy: ".").last
}
When I test the code, the compiler return no error but I see no item in my purchase list (instead of one when I activate the old one item declaration). What am I missing?
Is there a swift 3 simplest code example to declare several items for in app purchase ? I can't find any on the web. I use spritekit, so, I don't need tableview components or UIView buttons, this is a little bit confusing for just starting with in app purchase functionalities.

Answer 1

Make sure you add additional identifiers, similar to this one:
public static let GirlfriendOfDrummerRage = "com.creaworks.FurryLight_Puzzles.Guitarist"
Then add them to Set<ProductIdentifier>.
Here an example with 2 products:
public struct Products {
public static let One = "com.creaworks.FurryLight_Puzzles.Guitarist"
public static let Two = "com.creaworks.FurryLight_Puzzles.GuitaristTWO"
fileprivate static let productIndentifiers: Set<ProductIdentifier> = [Products.One, Products.Two]
func resourceNameForProductIdentifier(_ productIdentifier: String) -> String? {
return productIdentifier.components(separatedBy: ".").last
}
}