Firestore从子集合中删除单据后，未将单据添加到子集合

const admin = require('firebase-admin');
const db = admin.firestore();

async function deleteAndAddDocumentToSubcollection(parentDocId, subcollectionName, documentId, documentData) {
  const parentDocRef = db.collection('parentCollection').doc(parentDocId);
  const subcollectionRef = parentDocRef.collection(subcollectionName);
  
  try {
    await db.runTransaction(async (transaction) => {
      const parentDocSnapshot = await transaction.get(parentDocRef);
      const subcollectionSnapshot = await transaction.get(subcollectionRef);
      
      if (parentDocSnapshot.exists && subcollectionSnapshot.exists) {
        // 删除子集合中的文档
        transaction.delete(subcollectionRef.doc(documentId));
        
        // 将文档添加回子集合
        transaction.set(subcollectionRef.doc(documentId), documentData);
      }
    });
    
    console.log('删除成功并将文档添加回子集合');
  } catch (error) {
    console.error('删除和添加文档时出错：', error);
  }
}

// 使用示例
deleteAndAddDocumentToSubcollection('parentDocId', 'subcollectionName', 'documentId', { /* documentData */ });