soda event+add to card

 (function(){
            var sourceURL = 'https://sodastream.com/cart/add.js';
            var productId = '12321242611754';
            var eventType = 'Adoric - ' + 'Carousel Recipe Rose Paloma A/B';
            var data = JSON.stringify({id: productId, quantity: 1});
            var eventElementType = 'Added to the cart';
            var productName = 'Rose Paloma One Item (Soda Press Pink Grapefruit - 500ml)';
            var xhr = new XMLHttpRequest();
            xhr.withCredentials = true;
            xhr.open('POST', sourceURL);
            xhr.setRequestHeader('Content-Type', 'application/json; charset=utf-8');
            function pushCustomGAEvent(eventType, eventElementType, elementId) {
                if (window.preDataLayer) {
                    window.preDataLayer.push({
                        event: 'newEvent',
                        newEventData: {
                            type: eventType,
                            elementType: eventElementType,
                            elementId: elementId
                        }
                    });
                }
            }
            function pushEcommerceEvent(productListName, productId) {
                window.preDataLayer.push({
                    "event": "newEvent",
                    "newEventData": {
                        "ecommerce": {
                            "add": {
                                "list": productListName,
                                "products": [
                                    {
                                        "variant_id": productId,
                                        "quantity": 1
                                    }
                                ]
                            }
                        },
                        "type": "ecommerceData"
                    }
                })
            }
            xhr.addEventListener('readystatechange', function() {
                if (this.readyState === 4) {
                    pushCustomGAEvent(eventType, eventElementType, productName);
                    pushEcommerceEvent(eventType, productId);
                }
            });
            xhr.send([data]);
        })();