Afterpay または Clearpay の支払いを受け付ける

import UIKit
import StripePaymentsUI

@main
class AppDelegate: UIResponder, UIApplicationDelegate {

    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        StripeAPI.defaultPublishableKey = 
"pk_test_TYooMQauvdEDq54NiTphI7jx"
        // do any other necessary launch configuration
        return true
    }
}

curl https://api.stripe.com/v1/payment_intents \
  -u 
sk_test_BQokikJOvBiI2HlWgH4olfQ2
: \
  -d "amount"=1099 \
  -d "currency"="usd" \
  -d "payment_method_types[]"="afterpay_clearpay"

curl https://api.stripe.com/v1/payment_intents \
  -u 
sk_test_BQokikJOvBiI2HlWgH4olfQ2
: \
  -d "amount"=1099 \
  -d "currency"="usd" \
  -d "payment_method_types[]"="afterpay_clearpay" \
  -d "payment_method_options[afterpay_clearpay][reference]"="order_123"

import UIKit
import StripePayments

class CheckoutViewController: UIViewController {
  var paymentIntentClientSecret: String?

  func startCheckout() {
      // Request a PaymentIntent from your server and store its client secret
  }
}

// Billing details
let billingDetails = STPPaymentMethodBillingDetails()
billingDetails.name = "Jane Doe"
billingDetails.email = "email@email.com"
let billingAddress = STPPaymentMethodAddress()
billingAddress.line1 = "510 Townsend St."
billingAddress.postalCode = "94102"
billingAddress.country = "US"
billingDetails.address = billingAddress

// Afterpay PaymentMethod params
let afterpayParams = STPPaymentMethodParams(afterpayClearpay: STPPaymentMethodAfterpayClearpayParams(),
                                                                             billingDetails: billingDetails,
                                                                             metadata: nil)

// Shipping details
// Shipping details are optional but recommended to pass in.
let shippingAddress = STPPaymentIntentShippingDetailsAddressParams(line1: "510 Townsend St.")
shippingAddress.country = "US"
shippingAddress.postalCode = "94102"
let shippingDetails = STPPaymentIntentShippingDetailsParams(address: shippingAddress, name: "Jane Doe")

let paymentIntentParams = STPPaymentIntentParams(clientSecret: paymentIntentClientSecret)
paymentIntentParams.paymentMethodParams = afterpayParams
// Shipping details are optional but recommended to pass in.
paymentIntentParams.shipping = shippingDetails

STPPaymentHandler.shared().confirmPayment(paymentIntentParams, with: self) { (handlerStatus, paymentIntent, error) in
    switch handlerStatus {
    case .succeeded:
        // Payment succeeded

    case .canceled:
        // Payment was canceled

    case .failed:
        // Payment failed

    @unknown default:
        fatalError()
    }
}