document.addEventListener("DOMContentLoaded", () => {
    if(typeof ApplePaySession === 'undefined'){ return; }

    // eslint-disable-next-line no-undef


    if(ApplePaySession?.supportsVersion(4) && ApplePaySession?.canMakePayments()) {
        init_applepay_checkout().catch(console.error);
    }
});

async function init_applepay( ){
    // eslint-disable-next-line no-undef
    if(ApplePaySession?.supportsVersion(4) && ApplePaySession?.canMakePayments()) {
        init_applepay_checkout().catch(console.error);
    }
}

async function init_applepay_checkout() {
    const applepay = paypal.Applepay();
    const {
        isEligible,
        countryCode,
        currencyCode,
        merchantCapabilities,
        supportedNetworks,
    } = await  applepay.config();

    if (!isEligible) {
        throw new Error("applepay is not eligible");
    }

    document.getElementById("applepay-button-container").innerHTML = '<apple-pay-button id="btn-appl" buttonstyle="black" type="buy" locale="en-US">';

    document.getElementById("btn-appl").addEventListener("click", applepay_button_click);

    async function applepay_button_click() {
        //console.log({ merchantCapabilities, currencyCode, supportedNetworks })

/*
        const paymentRequest = {
            countryCode,
            currencyCode: 'USD',
            merchantCapabilities,
            supportedNetworks,
            requiredBillingContactFields: [
                "name",
                "phone",
                "email",
                "postalAddress",
            ],
            requiredShippingContactFields: [],
            total: {
                label: "Demo (Card is not charged)",
                amount: "10.00",
                type: "final",
            },
        };
*/
        paymentRequest = {
            countryCode: 'US',
            currencyCode: 'USD',
            merchantCapabilities,
            supportedNetworks,
            requiredBillingContactFields: [
                "name",
                "phone",
                "email",
                "postalAddress",
            ],
            requiredShippingContactFields: []
        };

        //console.log(typeof paymentRequest);

        if(apple_pay_transaction_info && apple_pay_transaction_info != ''){
            paymentRequest = $.extend(paymentRequest, apple_pay_transaction_info);
        }

        //console.log(paymentRequest);

        // eslint-disable-next-line no-undef
        let session = new ApplePaySession(4, paymentRequest);

        session.onvalidatemerchant = (event) => {
            applepay.validateMerchant({
                validationUrl: event.validationURL,
            }).then((payload) => {
                session.completeMerchantValidation(payload.merchantSession);
            }).catch((err) => {
                console.error(err);
                session.abort();
            });
        };

        session.onpaymentmethodselected = () => {
            session.completePaymentMethodSelection({
                newTotal: paymentRequest.total,
            });
        };

        session.onpaymentauthorized = async (event) => {
            try {
                /* Create Order on the Server Side */
                const orderResponse = await fetch('/paypal_checkout.php',{
                    method:'POST',
                    body: JSON.stringify({
                        rt: 'create',
                        paymentSource: 'applepay',
                    }),
                    headers : {
                        'Content-Type': 'application/json'
                    }
                })

                if(!orderResponse.ok) {
                    msg = encodeURI('An error occurred while trying to process your transaction (code: ap-ocr).');
                    window.location = '/cart/checkout?cart_action=checkout&msg=' + msg;
                }

                const { id } = await orderResponse.json()
                //console.log({ id })
                /**
                * Confirm Payment
                */
                await applepay.confirmOrder({
                    orderId: id,
                    token: event.payment.token,
                    billingContact: event.payment.billingContact,
                    shippingContact: event.payment.shippingContact
                });

                /*
                * Capture order (must currently be made on server)
                */
                await fetch('/paypal_checkout.php', {
                    method: 'POST',
                    body: JSON.stringify({
                        rt: 'capture',
                        paypal_order_id: id,
                    }),
                });

                session.completePayment({
                    status: window.ApplePaySession.STATUS_SUCCESS,
                });

                window.location = '/cart/thank-you?cart_action=paypal_confirm';

            }
            catch (err) {
                console.error(err);
                session.completePayment({
                    status: window.ApplePaySession.STATUS_FAILURE,
                });

                msg = encodeURI('An error occurred while trying to process your transaction (code: ap-oca).');
                window.location = '/cart/checkout?cart_action=checkout&msg=' + msg;
            }
        };

        session.oncancel  = () => {
            console.log("Apple Pay Cancelled !!")
        }

        session.begin();
    }
}