package wallet

var paymentsHandle = templ.NewOnceHandle()

// Base payments script template
templ PaymentsScripts() {
	@paymentsHandle.Once() {
		<script type="text/javascript">
            // Check if Payment Request API is supported
            function isPaymentRequestSupported() {
                return window.PaymentRequest !== undefined;
            }

            // Create and show payment request
            async function showPaymentRequest(request) {
                try {
                    const paymentMethods = request.methodData;
                    const details = request.details;
                    const options = request.options || {};

                    const paymentRequest = new PaymentRequest(
                        paymentMethods,
                        details,
                        options
                    );

                    // Handle shipping address changes if shipping is requested
                    if (options.requestShipping) {
                        paymentRequest.addEventListener('shippingaddresschange', event => {
                            event.updateWith(Promise.resolve(details));
                        });
                    }

                    // Handle shipping option changes
                    if (details.shippingOptions && details.shippingOptions.length > 0) {
                        paymentRequest.addEventListener('shippingoptionchange', event => {
                            event.updateWith(Promise.resolve(details));
                        });
                    }

                    const response = await paymentRequest.show();
                    
                    // Create response object
                    const result = {
                        methodName: response.methodName,
                        details: response.details,
                    };

                    if (options.requestPayerName) {
                        result.payerName = response.payerName;
                    }
                    if (options.requestPayerEmail) {
                        result.payerEmail = response.payerEmail;
                    }
                    if (options.requestPayerPhone) {
                        result.payerPhone = response.payerPhone;
                    }
                    if (options.requestShipping) {
                        result.shippingAddress = response.shippingAddress;
                        result.shippingOption = response.shippingOption;
                    }

                    // Complete the payment
                    await response.complete('success');

                    // Dispatch success event
                    window.dispatchEvent(new CustomEvent('paymentComplete', {
                        detail: result
                    }));

                } catch (err) {
                    // Dispatch error event
                    window.dispatchEvent(new CustomEvent('paymentError', {
                        detail: err.message
                    }));
                }
            }

            // Abort payment request
            function abortPaymentRequest() {
                if (window.currentPaymentRequest) {
                    window.currentPaymentRequest.abort();
                }
            }
        </script>
	}
}

// StartPayment for initiating payment request
templ StartPayment(request PaymentRequest) {
	@PaymentsScripts()
	<script>
        (async () => {
            try {
                if (!isPaymentRequestSupported()) {
                    throw new Error("Payment Request API is not supported in this browser");
                }
                const request = { templ.JSONString(request) };
                await showPaymentRequest(request);
            } catch (err) {
                window.dispatchEvent(new CustomEvent('paymentError', {
                    detail: err.message
                }));
            }
        })();
    </script>
}