(function () {
    const params = new URLSearchParams(window.location.search);

    const source = params.get('utm_source');
    const medium = params.get('utm_medium');
    const campaign = params.get('utm_campaign');

    function setCookie(name, value, days) {
        const expires = new Date(Date.now() + days * 86400000).toUTCString();

        document.cookie =
            name + '=' + encodeURIComponent(value) +
            '; expires=' + expires +
            '; path=/' +
            '; SameSite=Lax';
    }

    function getCookie(name) {
        return document.cookie
            .split('; ')
            .find(row => row.startsWith(name + '='));
    }

    // Only save first touch once
    if ((source || medium || campaign) && !getCookie('first_touch')) {
        const firstTouch = {
            source: source || '',
            medium: medium || '',
            campaign: campaign || '',
            capturedDate: new Date().toISOString()
        };

        const firstTouchJson = JSON.stringify(firstTouch);

        // Keep localStorage if you still want JS access
        localStorage.setItem('first_touch', firstTouchJson);

        // Add cookie so Rock/Lava can read it
        setCookie('first_touch', firstTouchJson, 365);

        // Optional individual cookies, easier for Rock workflows
        setCookie('utm_source', firstTouch.source, 365);
        setCookie('utm_medium', firstTouch.medium, 365);
        setCookie('utm_campaign', firstTouch.campaign, 365);
        setCookie('first_touch_date', new Date().toISOString().split('T')[0], 365);
    }
})();
$(function () {

    // Find the Tracking fieldset.
    // If this page does not have a Tracking section, stop immediately.
    const $trackingFieldset = $("fieldset").filter(function () {
        return $(this).find("h4").first().text().trim() === "Tracking";
    });

    if (!$trackingFieldset.length) {
        return;
    }

    function getCookie(name) {
        const value = "; " + document.cookie;
        const parts = value.split("; " + name + "=");

        if (parts.length === 2) {
            return decodeURIComponent(parts.pop().split(";").shift());
        }

        return "";
    }

    function setFieldByLabel(labelText, value) {
        const $field = $trackingFieldset
            .find("label")
            .filter(function () {
                return $(this).text().trim() === labelText;
            })
            .closest(".form-group")
            .find("input, textarea, select");

        if ($field.length && value) {
            $field.val(value).trigger("change");
        }
    }

    const firstTouchRaw = getCookie("first_touch");
    let firstTouch = {};

    try {
        firstTouch = firstTouchRaw ? JSON.parse(firstTouchRaw) : {};
    } catch (e) {
        console.warn("Could not parse first_touch cookie", e);
    }

    const firstTouchDate = (
        firstTouch.capturedDate ||
        getCookie("first_touch_date") ||
        ""
    ).split("T")[0];

    const today = new Date().toISOString().split("T")[0];

    setFieldByLabel("UTM Source", firstTouch.source || getCookie("utm_source"));
    setFieldByLabel("UTM Medium", firstTouch.medium || getCookie("utm_medium"));
    setFieldByLabel("UTM Campaign", firstTouch.campaign || getCookie("utm_campaign"));
    setFieldByLabel("First Touch Date", firstTouchDate);
    setFieldByLabel("First Form Date", today);

    // Hide the entire Tracking section after filling it.
    $trackingFieldset.hide();

});