Products & Purchases

1import StoreKit
2
3@MainActor
4@Observable
5final class Store {
6    var products: [Product] = []
7    var purchasedIDs: Set<String> = []
8
9    func load() async throws {
10        products = try await Product.products(for: ["pro.monthly", "pro.yearly"])
11    }
12
13    func buy(_ product: Product) async throws {
14        let result = try await product.purchase()
15        guard case .success(let verification) = result,
16              case .verified(let transaction) = verification else { return }
17        purchasedIDs.insert(transaction.productID)
18        await transaction.finish()
19    }
20
21    func listenForTransactions() -> Task<Void, Never> {
22        Task {
23            for await update in Transaction.updates {
24                if case .verified(let transaction) = update {
25                    purchasedIDs.insert(transaction.productID)
26                    await transaction.finish()
27                }
28            }
29        }
30    }
31}