GC device dates

function getDeviceInfo() {
    let rootURL = "https://connect.garmin.com/modern/device/";
    let loc = window.location.href;
    if (loc.indexOf(rootURL) != 0) {
        alert("This bookmarklet script must be run on GC device page (with a URL starting with " + rootURL + ")")
        return;
    }

    let deviceID = loc.replace(rootURL, "");
    let lastUploadTimestamp;
    let createdTs;

    var xhr = new XMLHttpRequest();
    xhr.open('GET', '../proxy/device-service/deviceservice/user-device/' + deviceID);
    xhr.setRequestHeader("NK", "NT")

    xhr.onload = function () {
        let obj = JSON.parse(xhr.response)
        lastUploadTimestamp = obj.lastUploadTimestamp;
        displayData();
    };
    xhr.send()

    var xhr2 = new XMLHttpRequest();
    xhr2.open('GET', '../proxy/device-service/deviceservice/device-info/' + deviceID);
    xhr2.setRequestHeader("NK", "NT")

    xhr2.onload = function () {
        let obj = JSON.parse(xhr2.response)
        createdTs = obj.createdTs;
        displayData();
    };
    xhr2.send()

    function displayData() {
        if (lastUploadTimestamp && createdTs) {
            alert(
                "Device Added To GC: " + new Date(createdTs) + "\n" +
                "Device Last Sync: " + new Date(lastUploadTimestamp)
            )
        }
    }
}

getDeviceInfo();