cloverstd · March 29, 2020 07:25 · Mar 29, 2020
diff --git a/recover.js b/recover.js
@@ -0,0 +1,100 @@
+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));
+  }
+}