Panopto downloader (messy code but it works)

download.js

(async () => {
async function fetchDeliveryInfo(deliveryId, tid, invocationId, options) {
    if ((!window.location.href.includes("/Pages/")) || (!deliveryId)) {
        alert("Not a Panopto page!");
        throw new Error("Not a Panopto page!");
    }
    const url = window.location.href.split("/Pages/")[0] + '/Pages/Viewer/DeliveryInfo.aspx';

    const params = new URLSearchParams();

    if (deliveryId !== undefined) {
        params.append('deliveryId', deliveryId);
    }
    if (tid !== undefined) {
        params.append('tid', tid);
    }
    if (invocationId !== undefined) {
        params.append('invocationId', invocationId);
    }

    params.append('isLiveNotes', (!!options.isLiveNotes).toString());
    params.append('refreshAuthCookie', (!!options.refreshAuthCookie).toString());
    params.append('isActiveBroadcast', (!!options.isActiveBroadcast).toString());
    params.append('isEditing', (!!options.isEditing).toString());
    params.append('isKollectiveAgentInstalled', (!!options.isKollectiveAgentInstalled).toString());
    params.append('isEmbed', (!!options.isEmbed).toString());

    params.append('responseType', 'json');

    const requestInit = {
        method: "POST",
        headers: {}
    };

    requestInit.body = params;

    const response = await fetch(url, requestInit);

    if (response.status === 200) {
        const responseData = await response.json();

        if (responseData.ErrorCode) {
            throw responseData;
        }

        return responseData;
    } else {
        throw response;
    }
}

const url2 = (await fetchDeliveryInfo((new URLSearchParams(window.location.search)).get("id"), undefined, undefined, { isLiveNotes: false, refreshAuthCookie: true, isActiveBroadcast: false, isEditing: false, isKollectiveAgentInstalled: false, isEmbed: false })).Delivery.PodcastStreams[0].StreamUrl;

const div = document.createElement("div");
div.id = "dlOverlay";
div.innerHTML = `<div style="position: fixed;top: 0;left: 0;height: 100vh;width: 100vw;background: rgba(0, 0, 0, 0.75);backdrop-filter: blur(10px);z-index: 9999999;display: flex;justify-content: center;align-items: center;"><a href="${url2}" target="_blank" onclick="document.getElementById('dlOverlay').remove()"><button style="font-size: 200%;border: none;border-radius: 15px;padding: 10px;">Click to download video in new tab</button></a></div>`;
document.body.appendChild(div);
})();