Gade.co.il "Free delivery" event to Adoric for GTM

<script>
(function() {
    var minPrice = 100;
    var maxPrice = 149;
    var FREE_SHIPPING = 150;
    function checkTotalCart() {
        var parser = new DOMParser();
        var doc =  '';
        var data = null;
        var xhr = new XMLHttpRequest();
        xhr.withCredentials = true;
        xhr.addEventListener('readystatechange', function () {
            if (this.readyState === 4) {

                doc = parser.parseFromString(this.responseText, 'text/html');
                var cartData = JSON.parse(doc.querySelector('body').innerText, 2);
                var totalPrice = cartData.total_price;
                totalPrice = parseInt(totalPrice / 100);
                window.localStorage.setItem('adoricTotalCartPrice', totalPrice);
                if ((totalPrice >= minPrice) && (totalPrice <= maxPrice)) {
                    window.localStorage.setItem('adoricFreeShipping', FREE_SHIPPING - totalPrice);
                    window.adoric && adoric.trigger('FreeDelivery');
                }
            }
        });
        xhr.open('GET', window.location.origin + '/cart.js');
        xhr.setRequestHeader('cache-control', 'no-cache');
        xhr.send(data);
    }
    setTimeout(checkTotalCart, 2000);
})();
</script>