gtm aldo add 20% tag

<script>
    (function () {
        var WAITING_TIMER_COUNTER = 10;
        var PART_OF_SECOND = 200;
        var feedURL = 'https://feeds.datafeedwatch.com/60212/31faa3c0131b91b3ab1a11e1083763b0174863aa.json';

        function showTagsCampaign(productSku) {
            if (productSku) {
                productSku = productSku.textContent;
            }
            fetch(feedURL)
                .then(function (res) {
                    return res.json();
                }).then(function (res) {
                    if (res && res.products) {
                        res.products.forEach(function (item) {
                            if (item.id === productSku) {
                                adoric && adoric.trigger('show20%tag');
                            }
                        });
                    }
                }).catch(function (error) {
                    console.info(error);
                });
        }

        function waitPageSelector() {
            WAITING_TIMER_COUNTER--;
            var nativePageSelector = document.querySelector('[class*="productFullDetail-productSku"]');

            if (!nativePageSelector && WAITING_TIMER_COUNTER > 0 || !window.adoric) {
                setTimeout(waitPageSelector, PART_OF_SECOND);
            } else if (window.adoric) {
                showTagsCampaign(nativePageSelector);
            }
        }

        waitPageSelector();
    })();
</script>