rover image downloader

function loadScript(url, async = true, type = "text/javascript") {
  return new Promise((resolve, reject) => {
    try {
      const scriptEle = document.createElement("script");
      scriptEle.type = type;
      scriptEle.async = async;
      scriptEle.src = url;

      scriptEle.addEventListener("load", (ev) => {
        resolve({ status: true });
      });

      scriptEle.addEventListener("error", (ev) => {
        reject({
          status: false,
          message: `Failed to load the script ${url}`,
        });
      });

      document.body.appendChild(scriptEle);
    } catch (error) {
      reject(error);
    }
  });
}

function getPics() {
  return new Promise((resolve, reject) => {
    try {
      let pics = new Set();
      let rightButton = $("button.rsArrowRight");
      let intervalId;
      function check() {
        let isLoading = $(".rsPreloader").length !== 0;
        if (!isLoading) {
          $("img.rsImg").each((i, elem) => pics.add(elem.src));
          if (rightButton.hasClass("rsArrowDisabled")) {
            clearInterval(intervalId);
            resolve(pics);
          } else {
            rightButton.click();
          }
        }
      }
      check();
      intervalId = setInterval(check, 50);
    } catch (error) {
      reject(error);
    }
  });
}

const scripts = Promise.all(
  [
    "https://cdnjs.cloudflare.com/ajax/libs/jszip/3.1.5/jszip.min.js",
    "https://cdnjs.cloudflare.com/ajax/libs/jszip-utils/0.0.2/jszip-utils.min.js",
    "https://cdnjs.cloudflare.com/ajax/libs/FileSaver.js/1.3.8/FileSaver.min.js",
  ].map((x) => loadScript(x, false))
).then((values) => console.log("Scripts loaded"));

let pics = await getPics();
console.log("pics loaded")
await scripts;

function urlToPromise(url) {
  return new Promise(function(resolve, reject) {
      JSZipUtils.getBinaryContent(url, function (err, data) {
          if(err) {
              reject(err);
          } else {
              resolve(data);
          }
      });
  });
}

let zip = new JSZip();

pics.forEach((url, i)=> {
  let filename = url.replace(/.*\/(\w*)\/(\w*)\/original.*/, "$1-$2.webp")
  zip.file(filename, urlToPromise(url), { binary: true });
});
zip.generateAsync({ type: "blob" }).then((content) => saveAs(content, "RoverPictures.zip"));