GTM

// First GTM code

(function() {
    function setCookie(name, value, days) {
        var expires = "";
        if (days) {
            var date = new Date();
            date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
            expires = "; expires=" + date.toUTCString();
        }
        document.cookie = "g_" + name + "=" + encodeURIComponent(value) + expires + "; path=/; Secure; SameSite=Lax";
    }

    function getQueryParam(param) {
        var urlParams = new RegExp('[?&]' + param + '=([^&#]*)').exec(window.location.search);
        return urlParams ? decodeURIComponent(urlParams[1].replace(/\+/g, ' ')) : null;
    }

    var utmParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content', 'utm_id'];
    var utmIdExists = getQueryParam('utm_id') !== null;
    var gclidExists = getQueryParam('gclid') !== null;

    if (utmIdExists || gclidExists) { // Fire only if utm_id or gclid is present
        utmParams.forEach(function(param) {
            var value = getQueryParam(param);
            if (value) {
                setCookie(param, value, 730); // 2 years expiry
            }
        });
    }

    // Notify GTM that cookies are set
    window.utmCookiesSet = true;
})();

// Second GTM code

(function() {
    function getCookie(name) {
        var match = document.cookie.match(new RegExp('(?:^|;\\s*)g_' + name + '=([^;]*)'));
        return match ? decodeURIComponent(match[1]) : "";
    }

    function waitForCookies(callback) {
        if (window.utmCookiesSet) {
            callback();
        } else {
            setTimeout(function() { waitForCookies(callback); }, 100); // Retry every 100ms
        }
    }

    waitForCookies(function() {
        var utm_source = getCookie("utm_source");
        var utm_medium = getCookie("utm_medium");
        var utm_campaign = getCookie("utm_campaign");
        var utm_term = getCookie("utm_term");
        var utm_content = getCookie("utm_content");
        var utm_id = getCookie("utm_id");

        if (!utm_campaign) {
            console.warn("No g_utm_campaign cookie found. Skipping link updates.");
            return;
        }

        var utm_query = `?utm_source=${encodeURIComponent(utm_source)}&utm_medium=${encodeURIComponent(utm_medium)}&utm_campaign=${encodeURIComponent(utm_campaign)}&utm_term=${encodeURIComponent(utm_term)}&utm_content=${encodeURIComponent(utm_content)}&utm_id=${encodeURIComponent(utm_id)}`;

        var links = document.querySelectorAll("a[href]");

        links.forEach(function(link) {
            var href = link.href;

            if ((href.includes("/contact-us/") || href.includes("/products/") || href.includes("/ray-the-sheep/") || href.includes("share.hsforms.com"))
                && !href.includes("utm_source")) {  // Avoid duplicate UTMs
                link.href = href.split("?")[0] + utm_query;
                console.log("Updated link:", link.href);
            }
        });

        console.log("Selected links updated with UTM parameters.");
    });
})();