gc-download-workout-2023

function downloadConnectWorkout() {
    var href = location.href;
    var s = "//connect.garmin.com/modern/workout/";
    var i = href.indexOf(s);
    if (i != -1) {
        var id = href.substring(i + s.length);
        var requestUrl = "https://connect.garmin.com/modern/proxy/workout-service/workout/FIT/" + id;

        var xhr = new XMLHttpRequest();
        xhr.open("GET", requestUrl);
        xhr.responseType = "arraybuffer";
        xhr.onload = function () {
            if (this.status === 200) {
                var blob = new Blob([xhr.response], {type: "application/octet-stream"});
                var objectUrl = URL.createObjectURL(blob);
                var a = document.createElement('a');
                a.href = objectUrl;
                a.download = id + ".FIT";
                document.body.appendChild(a);
                a.click();
                a.parentNode.removeChild(a);
            } else {
                alert("Download failed: (" + this.status + ") " + this.responseText);
            }
        };
        xhr.setRequestHeader("nk", "NT");
        xhr.send();
    } else {
        alert("This script should be run from a Connect workout page")
    }
}
downloadConnectWorkout();