[MBL-1194] Implement Validate Checkout

Kickstarter-iOS/Features/ConfirmDetails/Controllers/ConfirmDetailsViewController.swift

@@ -135,11 +135,8 @@ final class ConfirmDetailsViewController: UIViewController, MessageBannerViewCon
   // MARK: - Configuration
 
   private func configureChildViewControllers() {
-    _ = (self.rootScrollView, self.view)
-      |> ksr_addSubviewToParent()
-
-    _ = (self.continueCTAView, self.view)
-      |> ksr_addSubviewToParent()
+    self.view.addSubview(self.rootScrollView)
+    self.view.addSubview(self.continueCTAView)
 
     _ = (self.rootStackView, self.rootScrollView)
       |> ksr_addSubviewToParent()
@@ -152,27 +149,22 @@ final class ConfirmDetailsViewController: UIViewController, MessageBannerViewCon
       self.pledgeRewardsSummaryViewController
     ]
 
-    let arrangedSubviews = [
-      self.rootInsetStackView
-    ]
+    self.rootStackView.addArrangedSubview(self.rootInsetStackView)
 
     let arrangedInsetSubviews = [
       [self.titleLabel],
       self.inputsSectionViews,
-      self.pledgeAmountSummarySectionViews,
-      [self.pledgeRewardsSummaryViewController.view]
+      self.pledgeAmountSummarySectionViews
     ]
     .flatMap { $0 }
     .compact()
 
-    arrangedSubviews.forEach { view in
-      self.rootStackView.addArrangedSubview(view)
-    }
-
     arrangedInsetSubviews.forEach { view in
       self.rootInsetStackView.addArrangedSubview(view)
     }
 
+    self.rootStackView.addArrangedSubview(self.pledgeRewardsSummaryViewController.view)
+
     childViewControllers.forEach { viewController in
       self.addChild(viewController)
       viewController.didMove(toParent: self)

Kickstarter-iOS/Features/PledgeView/Controllers/PostCampaignCheckoutViewController.swift

@@ -10,14 +10,17 @@ private enum PostCampaignCheckoutLayout {
   }
 }
 
-final class PostCampaignCheckoutViewController: UIViewController {
+final class PostCampaignCheckoutViewController: UIViewController, MessageBannerViewControllerPresenting {
   // MARK: - Properties
 
+  internal var messageBannerViewController: MessageBannerViewController?
+
   private lazy var titleLabel = UILabel(frame: .zero)
 
   private lazy var paymentMethodsViewController = {
     PledgePaymentMethodsViewController.instantiate()
-    // TODO: Add self as delegate and add support for delegate methods.
+      |> \.messageDisplayingDelegate .~ self
+      |> \.delegate .~ self
   }()
 
   private lazy var pledgeCTAContainerView: PledgeViewCTAContainerView = {
@@ -72,6 +75,9 @@ final class PostCampaignCheckoutViewController: UIViewController {
 
     self.title = Strings.Back_this_project()
 
+    self.messageBannerViewController = self.configureMessageBannerViewController(on: self)
+    self.messageBannerViewController?.delegate = self
+
     self.configureChildViewControllers()
     self.setupConstraints()
 
@@ -199,6 +205,28 @@ final class PostCampaignCheckoutViewController: UIViewController {
         self.presentHelpWebViewController(with: helpType, presentationStyle: .formSheet)
       }
 
+    self.viewModel.outputs.validateCheckoutSuccess
+      .observeForControllerAction()
+      .observeValues { [weak self] _ in
+        guard let self else { return }
+
+        // TODO: Confirm paymentIntent using Stripe.confirmPayment()
+      }
+
+    self.viewModel.outputs.validateCheckoutExistingCardSuccess
+      .observeForControllerAction()
+      .observeValues { [weak self] _ in
+        guard let self else { return }
+
+        // TODO: Confirm paymentIntent using Stripe.confirmPayment()
+      }
+
+    self.viewModel.outputs.showErrorBannerWithMessage
+      .observeForControllerAction()
+      .observeValues { [weak self] errorMessage in
+        self?.messageBannerViewController?.showBanner(with: .error, message: errorMessage)
+      }
+
     self.sessionStartedObserver = NotificationCenter.default
       .addObserver(forName: .ksr_sessionStarted, object: nil, queue: nil) { [weak self] _ in
         self?.viewModel.inputs.userSessionStarted()
@@ -253,11 +281,70 @@ extension PostCampaignCheckoutViewController: PledgeViewCTAContainerViewDelegate
 
   func submitButtonTapped() {
     self.paymentMethodsViewController.cancelModalPresentation(true)
-    // TODO: Respond to button tap
+    self.viewModel.inputs.submitButtonTapped()
   }
 
   func termsOfUseTapped(with helpType: HelpType) {
     self.paymentMethodsViewController.cancelModalPresentation(true)
     self.viewModel.inputs.termsOfUseTapped(with: helpType)
   }
 }
+
+// MARK: - PledgePaymentMethodsViewControllerDelegate
+
+extension PostCampaignCheckoutViewController: PledgePaymentMethodsViewControllerDelegate {
+  func pledgePaymentMethodsViewController(
+    _: PledgePaymentMethodsViewController,
+    didSelectCreditCard paymentSource: PaymentSourceSelected
+  ) {
+    switch paymentSource {
+    case let .paymentIntentClientSecret(clientSecret):
+      return STPAPIClient.shared.retrievePaymentIntent(withClientSecret: clientSecret) { intent, _ in
+        guard let intent = intent else {
+          self.messageBannerViewController?
+            .showBanner(with: .error, message: Strings.Something_went_wrong_please_try_again())
+          return
+        }
+
+        let paymentMethodId = intent.paymentMethodId!
+
+        self.viewModel.inputs
+          .creditCardSelected(
+            source: paymentSource,
+            paymentMethodId: paymentMethodId,
+            isNewPaymentMethod: true
+          )
+      }
+    case let .savedCreditCard(savedCardId):
+      self.viewModel.inputs
+        .creditCardSelected(source: paymentSource, paymentMethodId: savedCardId, isNewPaymentMethod: false)
+    default:
+      break
+    }
+  }
+}
+
+// MARK: - PledgeViewControllerMessageDisplaying
+
+extension PostCampaignCheckoutViewController: PledgeViewControllerMessageDisplaying {
+  func pledgeViewController(_: UIViewController, didErrorWith message: String) {
+    self.messageBannerViewController?.showBanner(with: .error, message: message)
+  }
+
+  func pledgeViewController(_: UIViewController, didSucceedWith message: String) {
+    self.messageBannerViewController?.showBanner(with: .success, message: message)
+  }
+}
+
+// MARK: - MessageBannerViewControllerDelegate
+
+extension PostCampaignCheckoutViewController: MessageBannerViewControllerDelegate {
+  func messageBannerViewDidHide(type: MessageBannerType) {
+    switch type {
+    case .error:
+      self.navigationController?.popViewController(animated: true)
+    default:
+      break
+    }
+  }
+}

KsApi/models/graphql/UserCreditCards.swift

@@ -9,6 +9,7 @@ public struct UserCreditCards: Decodable {
     public var id: String
     public var lastFour: String
     public var type: CreditCardType?
+    public var stripeCardId: String?
 
     public var formattedExpirationDate: String {
       return String(self.expirationDate.dropLast(3))

KsApi/models/graphql/adapters/UserCreditCards+UserFragment.swift

@@ -16,7 +16,8 @@ extension UserCreditCards {
         expirationDate: node.expirationDate,
         id: node.id,
         lastFour: node.lastFour,
-        type: CreditCardType(rawValue: node.type.rawValue)
+        type: CreditCardType(rawValue: node.type.rawValue),
+        stripeCardId: node.stripeCardId
       )
     }
 

Library/ViewModels/ConfirmDetailsViewModel.swift

@@ -211,7 +211,7 @@ public class ConfirmDetailsViewModel: ConfirmDetailsViewModelType, ConfirmDetail
 
     /// Hide when there is a reward and shipping is enabled (accounts for digital rewards), and in a pledge context
     self.pledgeSummaryViewHidden = Signal.zip(baseReward, context).map { baseReward, context in
-      (baseReward.isNoReward == false && baseReward.shipping.enabled) && context == .pledge
+      baseReward.isNoReward == false && context == .pledge
     }
 
     let allRewardsTotal = Signal.combineLatest(
@@ -353,7 +353,16 @@ public class ConfirmDetailsViewModel: ConfirmDetailsViewModelType, ConfirmDetail
       }
 
     let checkoutValues = createCheckoutEvents.values()
-      .map { $0.checkout.id }
+      .map { values in
+        var checkoutId: String?
+
+        if let decoded = decodeBase64(values.checkout.id), let range = decoded.range(of: "Checkout-") {
+          let id = decoded[range.upperBound...]
+          checkoutId = String(id)
+        }
+
+        return checkoutId
+      }
 
     self.createCheckoutSuccess = checkoutValues.withLatestFrom(
       Signal.combineLatest(
@@ -385,7 +394,7 @@ public class ConfirmDetailsViewModel: ConfirmDetailsViewModelType, ConfirmDetail
         shipping: shipping,
         refTag: initialData.refTag,
         context: initialData.context,
-        checkoutId: checkoutValue
+        checkoutId: checkoutValue ?? ""
       )
     }
 

Library/ViewModels/ConfirmDetailsViewModelTests.swift

@@ -810,7 +810,7 @@ final class ConfirmDetailsViewModelTests: TestCase {
   }
 
   func testContinueButton_CallsCreateBackingMutation_Success() {
-    let expectedId = "id"
+    let expectedId = "Checkout-12345"
     let createCheckout = CreateCheckoutEnvelope.Checkout(id: expectedId, paymentUrl: "paymentUrl")
 
     let mockService = MockService(
@@ -875,7 +875,7 @@ final class ConfirmDetailsViewModelTests: TestCase {
         shipping: expectedShipping,
         refTag: nil,
         context: .pledge,
-        checkoutId: expectedId
+        checkoutId: "12345"
       )
       self.createCheckoutSuccess.assertValue(expectedValue)
     }