🐛 Fix price calculation on pages with cart

This covers: Mini-Cart, Classic Cart, Block Cart, Classic Checkout, Block Checkout, Pay-Now page

modules/ppcp-googlepay/resources/js/GooglepayButton.js

@@ -6,6 +6,11 @@ import { apmButtonsInit } from '../../../ppcp-button/resources/js/modules/Helper
 import TransactionInfo from './Helper/TransactionInfo';
 
 class GooglepayButton {
+	/**
+	 * @type {TransactionInfo}
+	 */
+	transactionInfo;
+
 	constructor(
 		context,
 		externalHandler,
@@ -379,6 +384,16 @@ class GooglepayButton {
 				).update( paymentData );
 				const transactionInfo = this.transactionInfo;
 
+				// Check, if the current context uses the WC cart.
+				const hasRealCart = [
+					'checkout-block',
+					'checkout',
+					'cart-block',
+					'cart',
+					'mini-cart',
+					'pay-now',
+				].includes( this.context );
+
 				this.log( 'onPaymentDataChanged:updatedData', updatedData );
 				this.log(
 					'onPaymentDataChanged:transactionInfo',
@@ -405,10 +420,17 @@ class GooglepayButton {
 						updatedData.shipping_options;
 				}
 
-				transactionInfo.shippingFee = this.getShippingCosts(
+				if ( updatedData.total && hasRealCart ) {
-					paymentData?.shippingOptionData?.id,
+					transactionInfo.setTotal(
-					updatedData.shipping_options
+						updatedData.total,
+						updatedData.shipping_fee
 					);
+				} else {
+					transactionInfo.shippingFee = this.getShippingCosts(
+						paymentData?.shippingOptionData?.id,
+						updatedData.shipping_options
+					);
+				}
 
 				paymentDataRequestUpdate.newTransactionInfo =
 					this.calculateNewTransactionInfo( transactionInfo );

modules/ppcp-googlepay/resources/js/Helper/TransactionInfo.js

@@ -15,21 +15,19 @@ export default class TransactionInfo {
 	}
 
 	set amount( newAmount ) {
-		this.#amount = Number( newAmount ) || 0;
+		this.#amount = this.toAmount( newAmount );
+	}
+
+	get amount() {
+		return this.#amount;
 	}
 
 	set shippingFee( newCost ) {
-		this.#shippingFee = Number( newCost ) || 0;
+		this.#shippingFee = this.toAmount( newCost );
 	}
 
-	set total( newTotal ) {
+	get shippingFee() {
-		newTotal = Number( newTotal ) || 0;
+		return this.#shippingFee;
-
-		if ( ! newTotal ) {
-			return;
-		}
-
-		this.#amount = newTotal - this.#shippingFee;
 	}
 
 	get currencyCode() {
@@ -58,4 +56,33 @@ export default class TransactionInfo {
 			totalPrice: this.totalPrice,
 		};
 	}
+
+	/**
+	 * Converts the value to a number and rounds to a precision of 2 digits.
+	 *
+	 * @param {any} value - The value to sanitize.
+	 * @return {number} Numeric value.
+	 */
+	toAmount( value ) {
+		value = Number( value ) || 0;
+		return Math.round( value * 100 ) / 100;
+	}
+
+	setTotal( totalPrice, shippingFee ) {
+		totalPrice = this.toAmount( totalPrice );
+
+		if ( totalPrice ) {
+			this.shippingFee = shippingFee;
+			this.amount = totalPrice - this.shippingFee;
+
+			console.log(
+				'New Total Price:',
+				totalPrice,
+				'=',
+				this.amount,
+				'+',
+				this.shippingFee
+			);
+		}
+	}
 }