Apple Pay

<ios>
  <ApplePayBtn tap="onApplePayTap" buttonType="InStore" />
</ios>

import { ApplePayBtn, ApplePayContactFields, ApplePayEvents, ApplePayItems, ApplePayMerchantCapability, ApplePayNetworks, ApplePayPaymentItemType, ApplePayRequest, ApplePayTransactionStatus, AuthorizePaymentEventData } from '@nativescript/apple-pay';

export function onApplePayTap() {
	try {
		// just ensuring this runs only on iOS
		if (global.isIOS) {
			const applePayBtn = args.object as ApplePayBtn;

			// setup the event listeners for the delegate for apple pay for our button
			applePayBtn.once(ApplePayEvents.DidAuthorizePaymentHandler, async (args: AuthorizePaymentEventData) => {
				console.log(ApplePayEvents.DidAuthorizePaymentHandler);

				// this is where you do backend processing with your payment provider (Stripe, PayPal, etc.)
                // this payload is just a sample, your payload to a provider will likely be different
                // you can see here how to access the encrypted values from Apple Pay inside the `args.data.paymentData`
				const payloadToBackend = {
					transaction_type: 'purchase',
					merchant_ref: args.data.paymentData.header.transactionId,
					method: '3DS',
					'3DS': {
						merchantIdentifier: <SomeIdentifierFromPaymentProvider>,
						data: args.data.paymentData.data,
						signature: args.data.paymentData.signature,
						version: args.data.paymentData.version,
						header: args.data.paymentData.header
					}
				};

                const result = await someHttpMethodToYourProviderBackend(payloadToBackend);

				if (result && result.value === true) {
					// need this to call when the payment is successful to close the payment sheet correctly on iOS
					args.completion(ApplePayTransactionStatus.Success);
					// now you can follow through with your user flow since the transactin has been successful with your provider
				} else {
                    // payment failed on the backend, so show the FAILURE to close the Apple Pay sheet
					args.completion(ApplePayTransactionStatus.Failure);
				}
			});

            // these are the items your customer is paying for
			const paymentItems = [
				{
					amount: 20.50,
					label: 'Balance',
					type: ApplePayPaymentItemType.Final,
				},
			] as ApplePayItems[];

			const request = {
				paymentItems,
				merchantId: <Your_Apple_Pay_Merchant_ID>, // the merchant ID for this app
				merchantCapabilities: ApplePayMerchantCapability.ThreeDS,
				countryCode: 'US',
				currencyCode: 'USD',
				shippingContactFields: [ApplePayContactFields.Name, ApplePayContactFields.PostalAddress],
				billingContactFields: [ApplePayContactFields.Name, ApplePayContactFields.PostalAddress],
				supportedNetworks: [ApplePayNetworks.Amex, ApplePayNetworks.Visa, ApplePayNetworks.Discover, ApplePayNetworks.MasterCard],
			} as ApplePayRequest;

            // `createPaymentRequest` will call into the Apple Pay SDK and present the user with the payment sheet for the configuration provided
			await applePayBtn.createPaymentRequest(request).catch((err) => {
				console.log('Apple Pay Error', err);
			});
		}
	} catch (error) {
		console.log(error);
	}
}