从firebase.firestore.Timestamp.now()中减去一周？

// 导入 Firebase Firestore
const firebase = require('firebase/app');
require('firebase/firestore');

// 初始化 Firebase 应用（假设已经配置好）
// firebase.initializeApp({...});

const firestore = firebase.firestore();

// 获取当前时间戳
const now = firebase.firestore.Timestamp.now();

// 创建一个表示一周前的日期对象
const oneWeekAgo = new Date(now.toMillis() - 7 * 24 * 60 * 60 * 1000);

// 将日期对象转换回 Firestore 时间戳
const oneWeekAgoTimestamp = firebase.firestore.Timestamp.fromMillis(oneWeekAgo.getTime());

console.log('Current Timestamp:', now);
console.log('One Week Ago Timestamp:', oneWeekAgoTimestamp);