ADD file via upload

server.js

@@ -0,0 +1,126 @@
+const express = require('express');
+const multer = require('multer');
+const xlsx = require('xlsx');
+const cors = require('cors');
+const bodyParser = require('body-parser');
+const path = require('path');
+
+const app = express();
+const PORT = 3000;
+
+app.use(cors());
+app.use(bodyParser.json());
+app.use(bodyParser.urlencoded({ extended: true }));
+app.use(express.static(path.join(__dirname, 'public')));
+
+let students = []; // 存储学生名单
+let studentScores = {}; // 存储学生积分
+let calledStudents = []; // 存储已点名学生的 ID
+
+// 设置 multer 以处理文件上传
+const upload = multer({ dest: 'uploads/' });
+
+// 导入 Excel 文件中的学生名单
+app.post('/upload', upload.single('file'), (req, res) => {
+    const workbook = xlsx.readFile(req.file.path);
+    const sheetName = workbook.SheetNames[0];
+    const sheet = workbook.Sheets[sheetName];
+
+    const data = xlsx.utils.sheet_to_json(sheet);
+    students = data.map(student => ({
+        id: student['学号'],
+        name: student['姓名'],
+        score: 0 // 初始积分为 0
+    }));
+
+    // 初始化学生积分
+    students.forEach(student => {
+        studentScores[student.id] = student.score;
+    });
+
+    // 清空已点名的学生列表
+    calledStudents = [];
+
+    res.send({ message: '学生名单已导入', students });
+});
+
+// 随机点名
+app.get('/rollcall', (req, res) => {
+    if (students.length === 0) {
+        return res.status(400).send({ message: '学生名单为空，请先导入名单' });
+    }
+
+    // 从所有学生中随机选择
+    const randomIndex = Math.floor(Math.random() * students.length);
+    const chosenStudent = students[randomIndex];
+
+    // 将选中的学生加入已点名列表
+    calledStudents.push(chosenStudent.id);
+    res.send(chosenStudent);
+});
+
+// 更新学生积分
+app.post('/update-score', (req, res) => {
+    const { id, isInClass, isQuestionCorrect, isAnswerCorrect, score } = req.body;
+
+    // 检查学生 ID 是否存在
+    if (!studentScores.hasOwnProperty(id)) {
+        return res.status(400).send({ message: '学生不存在' });
+    }
+
+    let scoreChange = 0;
+
+    if (isInClass) {
+        scoreChange += 1; // 到达课堂
+    }
+    if (isQuestionCorrect) {
+        scoreChange += 0.5; // 准确重复问题
+    } else if (isQuestionCorrect === false) {
+        scoreChange -= 1; // 未准确重复问题
+    }
+    if (isAnswerCorrect && score) {
+        scoreChange += score; // 根据情况加分
+    }
+
+    studentScores[id] += scoreChange;
+
+    res.send({ message: '积分已更新', score: studentScores[id] });
+});
+
+// 幸运抽奖
+app.post('/lottery', (req, res) => {
+    const { id } = req.body;
+
+    // 检查学生 ID 是否存在
+    if (!studentScores.hasOwnProperty(id)) {
+        return res.status(400).send({ message: '学生不存在' });
+    }
+
+    // 随机选择一个操作
+    const randomAction = Math.random();
+    let scoreChange = 0;
+
+    if (randomAction < 0.33) {
+        scoreChange = -0.5; // 扣0.5分
+        studentScores[id] += scoreChange;
+        return res.send({ message: '真无语,扣0.5分', score: studentScores[id] });
+    } else if (randomAction < 0.66) {
+        scoreChange = 1; // 加1分
+        studentScores[id] += scoreChange;
+        return res.send({ message: '不错不错,加1分', score: studentScores[id] });
+    } else {
+        scoreChange = 10; // 加10分
+        studentScores[id] += scoreChange;
+        return res.send({ message: '孩子你无敌了,加10分', score: studentScores[id] });
+    }
+});
+
+// 重置点名状态
+app.post('/reset', (req, res) => {
+    calledStudents = []; // 清空已点名学生列表
+    res.send({ message: '点名状态已重置' });
+});
+
+app.listen(PORT, () => {
+    console.log(`服务器正在运行在 http://localhost:${PORT}`);
+});