const fs = require('fs');
const path = require('path');
const xlsx = require('xlsx');  // 如果需要处理 Excel 文件，需要安装相关库
const pool = require('../db');

const classManager = {
  addClass: (req, res) => {
    const filePath = req.file.path;  // 上传文件的路径

    // 读取并解析 Excel 文件
    const workbook = xlsx.readFile(filePath);
    const sheetName = workbook.SheetNames[0];
    const worksheet = workbook.Sheets[sheetName];
    
    const students = xlsx.utils.sheet_to_json(worksheet);  // 将 Excel 转为 JSON 格式

    // 假设每个学生的记录中包含 name 和 studentId
    students.forEach(student => {
      // 将学生数据插入数据库
      const query = 'INSERT INTO students (name, student_id, score, call_count) VALUES (?, ?, 0, 0)';
      pool.query(query, [student.name, student.studentId], (error) => {
        if (error) {
          console.error(`Error inserting student: ${student.name}`, error);
        }
      });
    });

    res.status(200).json({ message: 'Class added successfully!' });
  }
};

module.exports = classManager;