Issuing でデジタルウォレットを使用する

import Stripe

class MyViewController: UIViewController {

  @IBOutlet weak var addPassButton: PKAddPassButton!
  // ...
  func handleEligibilityResponse(eligible: Bool, primaryAccountIdentifier: String?) {
    if eligible &&
    PKPassLibrary().canAddSecureElementPass(primaryAccountIdentifier: primaryAccountIdentifier ?? "") {
      addPassButton.isHidden = false
    } else {
      addPassButton.isHidden = true
    }
  }

}

import Stripe

class MyViewController: UIViewController {
  // ...
  func beginPushProvisioning() {
    let config = STPPushProvisioningContext.requestConfiguration(
      withName: "Jenny Rosen", // the cardholder's name
      description: "RocketRides Card", // optional; a description of your card
      last4: "4242", // optional; the last 4 digits of the card
      brand: .visa, // optional; the brand of the card
      primaryAccountIdentifier: self.primaryAccountIdentifier // the primary_account_identifier value from the previous step
    )
    let controller = PKAddPaymentPassViewController(requestConfiguration: config, delegate: self)
    self.present(controller!, animated: true, completion: nil)
  }
}

class MyViewController: UIViewController {
  var pushProvisioningContext: STPPushProvisioningContext? = nil
  // ...
}

extension MyViewController: PKAddPaymentPassViewControllerDelegate {
  func addPaymentPassViewController(_ controller: PKAddPaymentPassViewController, generateRequestWithCertificateChain certificates: [Data], nonce: Data, nonceSignature: Data, completionHandler handler: @escaping (PKAddPaymentPassRequest) -> Void) {
    self.pushProvisioningContext = STPPushProvisioningContext(keyProvider: self)
    // STPPushProvisioningContext implements this delegate method for you, by retrieving encrypted card details from the Stripe API.
    self.pushProvisioningContext?.addPaymentPassViewController(controller, generateRequestWithCertificateChain: certificates, nonce: nonce, nonceSignature: nonceSignature, completionHandler: handler);
  }

  func addPaymentPassViewController(_ controller: PKAddPaymentPassViewController, didFinishAdding pass: PKPaymentPass?, error: Error?) {
    // Depending on if `error` is present, show a success or failure screen.
    self.dismiss(animated: true, completion: nil)
  }
}

extension MyViewController: STPIssuingCardEphemeralKeyProvider {
    func createIssuingCardKey(withAPIVersion apiVersion: String, completion: @escaping STPJSONResponseCompletionBlock) {
        // This example uses Alamofire for brevity, but you can make the request however you want
        AF.request("https://myapi.com/ephemeral_keys",
                   method: .post,
                   parameters: ["api_version": apiVersion])
        .responseJSON { response in
            switch response.result {
            case .success:
                if let data = response.data {
                    do {
                        let obj = try JSONSerialization.jsonObject(with: data, options: []) as! [AnyHashable: Any]
                        completion(obj, nil)
                    } catch {
                        completion(nil, error)
                    }
                }
            case .failure(let error):
                completion(nil, error)
            }
        }
    }
}

curl https://api.stripe.com/v1/ephemeral_keys \
  -u 
sk_test_BQokikJOvBiI2HlWgH4olfQ2
: \
  -d "issuing_card"="{{ISSUING_CARD_ID}}" \
  -H "Stripe-Version: {{API_VERSION}}"

import Stripe

class MyViewController: UIViewController {
  // ...
  func beginPushProvisioning() {
    let config = STPPushProvisioningContext.requestConfiguration(
      withName: "Jenny Rosen", // the cardholder's name
      description: "RocketRides Card", // optional; a description of your card
      last4: "4242", // optional; the last 4 digits of the card
      brand: .visa // optional; the brand of the card
    )
    let controller = STPFakeAddPaymentPassViewController(requestConfiguration: config, delegate: self)
    self.present(controller!, animated: true, completion: nil)
  }
}