const admin = require('firebase-admin');

// 初始化Firebase Admin SDK
admin.initializeApp({
  credential: admin.credential.applicationDefault(),
  databaseURL: 'YOUR_DATABASE_URL'
});

// 获取所有用户
async function listAllUsers(nextPageToken) {
  try {
    // 列出最多1000个用户
    const listUsersResult = await admin.auth().listUsers(1000, nextPageToken);
    
    listUsersResult.users.forEach((userRecord) => {
      console.log('UID:', userRecord.uid);
      console.log('Email:', userRecord.email);
    });
    
    if (listUsersResult.pageToken) {
      // 如果有更多用户，继续获取
      await listAllUsers(listUsersResult.pageToken);
    }
  } catch (error) {
    console.log('Error listing users:', error);
  }
}

// 调用函数开始遍历
listAllUsers();

import { getDatabase, ref, get } from "firebase/database";

const db = getDatabase();

// 假设你在数据库中有一个'users'节点存储了所有用户数据
function getAllUserUIDs() {
  const usersRef = ref(db, 'users');
  
  get(usersRef).then((snapshot) => {
    if (snapshot.exists()) {
      const users = snapshot.val();
      Object.keys(users).forEach((uid) => {
        console.log('UID:', uid);
      });
    } else {
      console.log("No users found");
    }
  }).catch((error) => {
    console.error("Error getting users:", error);
  });
}

const functions = require('firebase-functions');
const admin = require('firebase-admin');
admin.initializeApp();

exports.processAllUsers = functions.pubsub.schedule('every 24 hours').onRun(async (context) => {
  try {
    let allUsers = [];
    
    // 递归函数获取所有用户
    async function listAllUsers(pageToken) {
      const listUsersResult = await admin.auth().listUsers(1000, pageToken);
      listUsersResult.users.forEach(user => allUsers.push(user.uid));
      
      if (listUsersResult.pageToken) {
        return listAllUsers(listUsersResult.pageToken);
      }
    }
    
    await listAllUsers();
    console.log(`Found ${allUsers.length} users`);
    
    // 在这里处理所有用户的UID
    // 例如: 更新数据库中的某些字段
    
    return null;
  } catch (error) {
    console.error('Error:', error);
    return null;
  }
});