坚果云恢复文件

recover.js

function getParams() {
  const pairs = window.location.hash.substr(1).split('::');
  if (!pairs) {
    throw new Error('取不到参数');
  }
  return {
    sndId: pairs[1].split('=')[1],
    sndMagic: pairs[2].split('=')[1]
  };
}

function now() {
  return +new Date();
}

async function getEvents(marker) {
  const params = getParams();
  if (marker) {
    params['marker'] = marker;
  }
  const qs = new URLSearchParams();
  for (const key of Object.keys(params)) {
    qs.set(key, params[key]);
  }
  const response = await fetch(`https://www.jianguoyun.com/d/ajax/getEvents?${qs.toString()}`);
  if (response.status >= 400) {
    const data = await response.body();
    console.error(data);
    throw new Error(`get events failed: ${marker}, ${data}`);
  }
  return response.json();
}

async function unDoEvents({ opType, path, isdel, isdir, version }) {
  const formData = new URLSearchParams();
  formData.append('optype', opType);
  formData.append('path', path);
  formData.append('deleted', isdel);
  formData.append('dir', isdir);
  formData.append('version', version);
  const params = getParams();
  const response = await fetch(
    `https://www.jianguoyun.com/d/ajax/fileops/undoEvents?sndId=${params.sndId}&sndMagic=${params.sndMagic}`,
    {
      method: 'POST',
      body: formData.toString(),
      headers: {
        'Content-Type': 'application/x-www-form-urlencoded'
      }
    }
  );
  if (response.status >= 400) {
    const data = await response.json();
    if (response.status === 403) {
      if (data.errorCode === 'DirectoryNotEmpty') {
        // 如果是新增，并且文件夹为空时，就是这个错误，一般情况下可以忽略
        return;
      }
    }
    console.error(JSON.stringify(data));
    throw new Error(`unDoEvents error: ${JSON.stringify(data)}`);
  }
}

async function recover() {
  const startTs = +new Date(prompt('请输入要恢复的开始时间，时间格式示例：2020-12-12 2:22:22'));
  const endTs = +new Date(prompt('请输入要恢复的目标时间，时间格式示例：2020-12-12 03:03:03'));
  const editorAccount = prompt('请输入要恢复的操作人的邮箱');
  if (
    !confirm(
      `将会开始恢复下列信息，${new Date(endTs)} 到 ${new Date(startTs)} 时间内 ${
      editorAccount ? editorAccount : '任意操作人'
      } 的操作 `
    )
  ) {
    return;
  }
  let marker, events;
  ({ marker, events } = await getEvents());
  while (true) {
    console.log(`marker: ${marker}`);
    for (const event of events) {
      if (event.timestamp > startTs) {
        console.log('未到操作时间，跳过');
        continue;
      }
      if (editorAccount && editorAccount !== event.editorAccount) {
        console.log(`操作人 ${event.editorAccount} 不是目标操作人 ${editorAccount}，跳过`);
        continue
      }
      if (event.timestamp < endTs) {
        console.log('finish');
        return;
      }
      console.log(`event: ${event.id} ${event.opType}, ${event.path}, ${new Date(event.timestamp)}`);
      await unDoEvents(event);
    }
    ({ marker, events } = await getEvents(marker));
  }
}