let userAppUploading = false;

function onBtn1Click() {
  if (userAppUploading) {
    return;
  }
  document.getElementById("userAppFile").click();
}

function uploadUserAppFile(input) {
  let file = input.files[0];

  if (!file) {
    return;
  }

  if (!file.name.toLowerCase().endsWith(".tar.gz")) {
    alert("只允许上传 tar.gz 类型的文件");
    input.value = "";
    return;
  }

  userAppUploading = true;

  let formData = new FormData();
  formData.append("file", file);

  let xhr = new XMLHttpRequest();
  xhr.open("POST", "/api/app-install/uploadUserAPP", true);
  xhr.timeout = 600000; // 10分钟

  xhr.upload.onprogress = function(e) {
    if (!e.lengthComputable) {
      return;
    }

    let percent = Math.floor(e.loaded * 100 / e.total);
    setText("bvar5", "正在上传 " + file.name + " (" + percent + "%)", "page6");
  };

  xhr.onload = function() {
    userAppUploading = false;
    input.value = "";

    if (xhr.status !== 200) {
      setText("bvar5", "上传失败: " + xhr.responseText, "page6");
      return;
    }

    setText("bvar5", "上传完成，等待下一步处理", "page6");
  };

  xhr.onerror = function() {
    userAppUploading = false;
    input.value = "";

    setText("bvar5", "上传失败，请检查网络连接", "page6");
  };

  xhr.ontimeout = function() {
    userAppUploading = false;
    input.value = "";

    setText("bvar5", "上传超时，请稍后重新尝试", "page6");
  };

  xhr.send(formData);
}

function initPage6() {
}

function exitPage6() {
}