// 下载并安装最新的APP版本
function downloadApp(appUrl) {
  // 下载最新版本APP
  var dtask = plus.downloader.createDownload(
    appUrl,
    {
      method: "GET",
    },
    (d, status) => {
      if (status == 200) {
        plus.runtime.install(
          plus.io.convertLocalFileSystemURL(d.filename),
          {},
          {},
          () => {
            uni.showToast({
              title: "安装失败",
              duration: 1500,
              icon: "none",
            });
          },
        );
      } else {
        plus.nativeUI.alert("安装失败，请稍候重试: " + status);
      }
    },
  );

  dtask.start();
  var prg = 0;
  var showLoading = plus.nativeUI.showWaiting("正在下载");
  dtask.addEventListener("statechanged", function (task) {
    switch (task.state) {
      case 1:
        showLoading.setTitle("正在下载");
        break;
      case 2:
        showLoading.setTitle("已连接到服务器");
        break;
      case 3:
        prg = parseInt(
          (parseFloat(task.downloadedSize) / parseFloat(task.totalSize)) * 100,
        );
        showLoading.setTitle("版本更新,正在下载" + prg + "% ");
        break;
      case 4:
        plus.nativeUI.closeWaiting();
        break;
    }
  });
}

export { downloadApp };