Customize VTEX IPS cookie - forcing expiration time

vtexCustomIPSCookie.js

(function vtexCustomIPSCookie() {
    function createCookie(name, value, days) {
        if (days) {
            var date = new Date();
            date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
            var expires = "; expires=" + date.toGMTString();
        } else {
            var expires = "";
        }
        var domain = window.location.hostname;
        document.cookie = name + "=" + value + expires + ";domain=." + domain + ";path=/";
    }
    $.ajaxSetup({
        beforeSend: function (xhr,settings) {
            try {
                if (settings.url.indexOf('Site/Track.aspx') > -1) {
                    var url = new URL(window.location.protocol + '//' + window.location.hostname + settings.url);
                    var Parceiro = url.searchParams.get("utm_source") || '';
                    var Midia = url.searchParams.get("utm_medium") || '';
                    var Campanha = url.searchParams.get("utm_campaign") || '';
                    if (Parceiro || Midia || Campanha) {
                        xhr.vtexCustomIPSCookieRequest = function() { createCookie('IPS', 'Midia=' + Midia + '&Campanha=' + Campanha + '&Parceiro=' + Parceiro, 30); };
                    }
                }
            } catch(e) {
                console.error(e)
            }
        },
        complete: function (xhr, jqxhr, textStatus) {
            try {
                if (xhr.vtexCustomIPSCookieRequest) {
                    xhr.vtexCustomIPSCookieRequest();
                }
            } catch (e) {
                console.error(e);
            }
        }
    });
})()