function onPaymentAuthorised()

in support-frontend/assets/helpers/subscriptionsForms/submit.ts [234:307]
67 lines of code
4 McCabe index (conditional complexity)

function onPaymentAuthorised(
	paymentAuthorisation: PaymentAuthorisation,
	dispatch: Dispatch<Action>,
	state: SubscriptionsState,
	currency?: IsoCurrency,
): void {
	const {
		billingPeriod,
		fulfilmentOption,
		orderIsAGift,
		productOption,
		productPrices,
	} = state.page.checkoutForm.product;
	const productType = getSubscriptionType(state);
	const { paymentMethod } = state.page.checkoutForm.payment;
	const { csrf } = state.page.checkoutForm;
	const addresses = getAddresses(state);
	const pricingCountry =
		addresses.deliveryAddress?.country ?? addresses.billingAddress.country;
	const productPrice = getProductPrice(
		productPrices,
		pricingCountry,
		billingPeriod,
		fulfilmentOption,
		productOption,
	);
	const data = buildRegularPaymentRequest(
		state,
		paymentAuthorisation,
		addresses,
		productPrice.promotions,
		currency,
	);

	const handleSubscribeResult = (result: PaymentResult) => {
		if (result.paymentStatus === 'success') {
			if (result.subscriptionCreationPending) {
				dispatch(setStage('thankyou-pending', productType, paymentMethod.name));
			} else {
				dispatch(setStage('thankyou', productType, paymentMethod.name));
			}

			const printPriceDiscounted = getPrintDiscountedPrice(
				productPrice,
				data.appliedPromotion?.promoCode,
			);
			const { currencyId } = state.common.internationalisation;

			// GTM: track print subscription conversion
			successfulSubscriptionConversion(
				printPriceDiscounted,
				currencyId,
				paymentMethod.name,
				billingPeriod,
				productType,
			);

			// QM: track print subscription conversion
			sendEventSubscriptionCheckoutConversion(
				productType,
				!!orderIsAGift,
				productPrice,
				billingPeriod,
			);
		} else if (result.error) {
			dispatch(setSubmissionError(result.error));
		}
	};

	dispatch(setFormSubmitted(true));
	void postRegularPaymentRequest(routes.subscriptionCreate, data, csrf).then(
		handleSubscribeResult,
	);
}