请帮我添加来自firebase的共享墙纸代码

// 引入Firebase SDK
import firebase from 'firebase/app';
import 'firebase/database';

// 初始化Firebase实例
const firebaseConfig = {
  apiKey: 'YOUR_API_KEY',
  authDomain: 'YOUR_AUTH_DOMAIN',
  databaseURL: 'YOUR_DATABASE_URL',
  projectId: 'YOUR_PROJECT_ID',
  storageBucket: 'YOUR_STORAGE_BUCKET',
  messagingSenderId: 'YOUR_MESSAGING_SENDER_ID',
  appId: 'YOUR_APP_ID',
};

firebase.initializeApp(firebaseConfig);

// 上传墙纸
function uploadWallpaper(imageFile) {
  // 生成一个唯一的文件名
  const fileName = `${Date.now()}_${imageFile.name}`;

  // 获取存储引用
  const storageRef = firebase.storage().ref();

  // 上传文件到云存储
  const uploadTask = storageRef.child(fileName).put(imageFile);

  // 监听上传进度
  uploadTask.on('state_changed', (snapshot) => {
    // 获取上传进度
    const progress = (snapshot.bytesTransferred / snapshot.totalBytes) * 100;
    console.log(`Upload progress: ${progress}%`);
  }, (error) => {
    console.error('Upload failed:', error);
  }, () => {
    // 上传完成后，获取文件的下载URL
    uploadTask.snapshot.ref.getDownloadURL().then((downloadURL) => {
      // 将下载URL保存到实时数据库中
      firebase.database().ref('wallpapers').push({
        url: downloadURL,
        timestamp: Date.now(),
      });
    });
  });
}

// 获取墙纸列表
function getWallpapers() {
  // 从实时数据库中获取墙纸数据
  firebase.database().ref('wallpapers').once('value').then((snapshot) => {
    const wallpapers = [];
    snapshot.forEach((childSnapshot) => {
      const wallpaper = childSnapshot.val();
      wallpapers.push(wallpaper);
    });
    console.log('Wallpapers:', wallpapers);
  });
}