Включение покупок через пейволы в iOS SDK

В SwiftUI при отображении пейвола нужно также обработать события. Часть из них опциональна, но didFailPurchase, didFinishRestore, didFailRestore и didFailRendering обязательны. При тестировании можно просто скопировать код из фрагмента ниже — он будет логировать эти ошибки.

.paywall(
    isPresented: $paywallPresented,
    paywallConfiguration: paywallConfiguration,
    didFailPurchase: { product, error in
        print("Purchase failed: \(error)")
    },
    didFinishRestore: { profile in
        print("Restore finished successfully")
    },
    didFailRestore: { error in
        print("Restore failed: \(error)")
    },
    didFailRendering: { error in
        paywallPresented = false
        print("Rendering failed: \(error)")
    },
    showAlertItem: $alertItem
)

func presentPaywall(with config: AdaptyUI.PaywallConfiguration) {
    let paywallController = AdaptyUI.paywallController(
        with: config,
        delegate: self
    )
    
    present(paywallController, animated: true)
}

didPerformAction: { action in
    switch action {
        case let .close:
            paywallPresented = false // default behavior
        default:
            break
    }
}

func paywallController(_ controller: AdaptyPaywallController,
                       didPerform action: AdaptyUI.Action) {
    switch action {
        case let .close:
            controller.dismiss(animated: true) // default behavior
        break
    }
}

struct ContentView: View {
  @State private var paywallPresented = false
  @State private var alertItem: AlertItem?
  @State private var paywallConfiguration: AdaptyUI.PaywallConfiguration?
  @State private var isLoading = false
  @State private var hasInitialized = false
  
  var body: some View {
    VStack {
      if isLoading {
        ProgressView("Loading...")
      } else {
        Text("Your App Content")
      }
    }
    .task {
      guard !hasInitialized else { return }
      await initializePaywall()
      hasInitialized = true
    }
    .paywall(
      isPresented: $paywallPresented,
      configuration: paywallConfiguration,
      didPerformAction: { action in
        switch action.type {
          case let .close:
              paywallPresented = false
          default:
              break
        }
      },
      didFailPurchase: { product, error in
        print("Purchase failed: \(error)")
      },
      didFinishRestore: { profile in
        print("Restore finished successfully")
      },
      didFailRestore: { error in
        print("Restore failed: \(error)")
      },
      didFailRendering: { error in
        print("Rendering failed: \(error)")
      },
      showAlertItem: $alertItem
    )
  }
  
  private func initializePaywall() async {
    isLoading = true
    defer { isLoading = false }
    
    await loadPaywall()
    paywallPresented = true
    }
  }
  
  private func loadPaywall() async {
    do {
      let paywall = try await Adapty.getPaywall("YOUR_PLACEMENT_ID")
      guard paywall.hasViewConfiguration else {
        print("Paywall doesn't have view configuration")
        return
      }
      paywallConfiguration = try await AdaptyUI.getPaywallConfiguration(forPaywall: paywall)
    } catch {
      print("Failed to load paywall: \(error)")
    }
  }
}

class ViewController: UIViewController {
  private var paywallConfiguration: AdaptyUI.PaywallConfiguration?
  
  override func viewDidLoad() {
    super.viewDidLoad()
    
    Task {
      await initializePaywall()
    }
  }
  
  private func initializePaywall() async {
    do {
      paywallConfiguration = try await loadPaywall()
            
      if let paywallConfiguration {
        await MainActor.run {
          presentPaywall(with: paywallConfiguration)
        }
      }
    } catch {
      print("Error initializing paywall: \(error)")
    }
  }
  
  private func loadPaywall() async throws -> AdaptyUI.PaywallConfiguration? {
    let paywall = try await Adapty.getPaywall("YOUR_PLACEMENT_ID")
    
    guard paywall.hasViewConfiguration else {
      print("Paywall doesn't have view configuration")
      return nil
    }
    
    return try await AdaptyUI.getPaywallConfiguration(forPaywall: paywall)
  }
  
  private func presentPaywall(with config: AdaptyUI.PaywallConfiguration) {
    let paywallController = AdaptyUI.paywallController(with: config, delegate: self)
    present(paywallController, animated: true)
  }
}

// MARK: - AdaptyPaywallControllerDelegate

extension ViewController: AdaptyPaywallControllerDelegate {
  func paywallController(_ controller: AdaptyPaywallController,
                       didPerform action: AdaptyUI.Action) {
    switch action {
        case let .close:
            controller.dismiss(animated: true)
        break
    }
 }
  
  func paywallController(_ controller: AdaptyUI.PaywallController,
                         didFailPurchase product: AdaptyPaywallProduct,
                         error: AdaptyError) {
    print("Purchase failed for \(product.vendorProductId): \(error)")
    
    guard error.adaptyErrorCode != .paymentCancelled else {
      return // Don't show alert for user cancellation
    }
    
    let message = switch error.adaptyErrorCode {
      case .paymentNotAllowed:
        "Purchases are not allowed on this device."
      default:
        "Purchase failed. Please try again."
    }
    
    let alert = UIAlertController(title: "Purchase Error", message: message, preferredStyle: .alert)
    let okAction = UIAlertAction(title: "OK", style: .default) { _ in }
    alert.addAction(okAction)
    present(alert, animated: true)
  }
  
  func paywallController(_ controller: AdaptyUI.PaywallController,
                         didFinishRestore profile: AdaptyProfile) {
    print("Restore finished successfully")
    controller.dismiss(animated: true)
  }
  
  func paywallController(_ controller: AdaptyUI.PaywallController,
                         didFailRestore error: AdaptyError) {
    print("Restore failed: \(error)")
  }
  
  func paywallController(_ controller: AdaptyUI.PaywallController,
                         didFailRendering error: AdaptyError) {
    print("Rendering failed: \(error)")
    controller.dismiss(animated: true)
  }
}