如何使用MongoDB $push & $inc运算符重现此代码？

{
  "_id": ObjectId("..."),
  "name": "张三",
  "scores": [
    { "subject": "数学", "score": 90 },
    { "subject": "语文", "score": 85 }
  ],
  "totalScore": 175,
  "examCount": 2
}

const { MongoClient, ObjectId } = require('mongodb');

async function main() {
  const uri = 'mongodb://localhost:27017';
  const client = new MongoClient(uri);

  try {
    await client.connect();
    const database = client.db('test');
    const studentsCollection = database.collection('students');

    // 假设我们要为名为"张三"的学生添加一个新的成绩
    const studentName = '张三';
    const newScore = { subject: '英语', score: 92 };

    // 使用$push将新成绩添加到scores数组中
    // 使用$inc来更新totalScore和examCount
    const updateResult = await studentsCollection.updateOne(
      { name: studentName },
      {
        $push: { scores: newScore },
        $inc: { totalScore: newScore.score, examCount: 1 }
      }
    );

    console.log(`更新了${updateResult.modifiedCount}个文档`);
  } finally {
    await client.close();
  }
}

main().catch(console.error);