GTM vertical carousel all domains

<script>
    (function() {
        try {
            function getData(sourceUrl, lsKey) {
                var xhr = new XMLHttpRequest();
                xhr.withCredentials = true;
                xhr.addEventListener("readystatechange", function() {
                    if (this.readyState === 4) {
                        var json = JSON.parse(this.responseText);
                        if (json && json.products && json.products.length > 0) {
                            window.localStorage.setItem(lsKey, JSON.stringify(json));
                        }
                    }
                });
                xhr.open("GET", sourceUrl);
                xhr.send();
            }

            var domain = location.hostname;
            var dataSourceUrl = '';
            var lsKey = '';
            switch (domain) {
                case 'sodastream.com':
                    dataSourceUrl = 'https://feeds.datafeedwatch.com/61736/81fd097f63e9bf0edef631a72f6ca2f3a2872709.json';
                    lsKey = 'upsell_Vertical_Carousel';
                    getData(dataSourceUrl, lsKey);
                    break;
                case 'sodastream.ca':
                    dataSourceUrl = 'https://feeds.datafeedwatch.com/64282/0d1f540754be235a47254aa8a146099f77e67a21.json';
                    lsKey = 'upsell_Vertical_Carousel';
                    getData(dataSourceUrl, lsKey);
                    break;
                case 'sodastream.fr':
                    dataSourceUrl = 'https://feeds.datafeedwatch.com/66229/9e5f8b240f61a3155d6bbc3494ee9e7139135578.json';
                    lsKey = 'upsell_Vertical_Carousel';
                    getData(dataSourceUrl, lsKey);
                    break;
                case 'sodastream.se':
                    dataSourceUrl = 'https://feeds.datafeedwatch.com/64397/ef779f79ebf13838f3e7f3f2ac33c9e4cf4589c8.json';
                    lsKey = 'upsell_Vertical_Carousel';
                    getData(dataSourceUrl, lsKey);
                    break;
                case 'sodastream.de':
                    dataSourceUrl = 'https://feeds.datafeedwatch.com/64183/52bb0f7cc9cb9bbc6e9589624d3e5fb5c5465ed7.json';
                    lsKey = 'upsell_Vertical_Carousel';
                    getData(dataSourceUrl, lsKey);
                    break;
                    default:
                    return;
                }


        } catch(requestError) {console.log(requestError)}
    })();
</script>