krz/hutch

 1import StoreKit
 2
 3@Observable
 4final class TipStoreViewModel {
 5    var products: [Product] = []
 6    var isLoading = false
 7    var errorMessage: String?
 8
 9    private let productIDs = [
10        "net.cleberg.hutch.tip.small",
11        "net.cleberg.hutch.tip.medium",
12        "net.cleberg.hutch.tip.large"
13    ]
14
15    func loadProducts() async {
16        isLoading = true
17        defer { isLoading = false }
18        do {
19            let fetched = try await Product.products(for: productIDs)
20            // Sort by price ascending to maintain small/medium/large order
21            products = fetched.sorted { $0.price < $1.price }
22        } catch {
23            errorMessage = error.localizedDescription
24        }
25    }
26
27    func purchase(_ product: Product) async {
28        do {
29            let result = try await product.purchase()
30            switch result {
31            case .success(let verification):
32                if case .verified(let transaction) = verification {
33                    await transaction.finish()
34                }
35            case .userCancelled, .pending:
36                break
37            @unknown default:
38                break
39            }
40        } catch {
41            errorMessage = error.localizedDescription
42        }
43    }
44}