Update scoreManager.js

scoreManager.js

@@ -2,7 +2,78 @@ const pool = require('../db');
 
 async function updateScore(req, res) {
     const { student_id, points } = req.body; //假设前端发送的数据是这两部分
+const pool = require('../db');
+
+async function updateScore(req, res) {
+    const { student_id, points } = req.body;
+    let connection; // 在try块外部声明connection
+
+    try {
+        connection = await pool.getConnection();
+        
+        // 更新学生的积分并增加点名次数
+        const [result] = await connection.query(
+            'UPDATE students SET score = score + ?, call_count = call_count + 1 WHERE student_id = ?', 
+            [points, student_id]
+        );
+
+        if (result.affectedRows > 0) {
+            // 查询更新后的分数
+            const [rows] = await connection.query(
+                'SELECT score FROM students WHERE student_id = ?', 
+                [student_id]
+            );
+            
+            if (rows.length > 0) {
+                const updatedScore = rows[0].score;
+                return res.send(String(updatedScore)); 
+            } else {
+                return res.status(404).send('学生不存在');
+            }
+        } else {
+            return res.status(404).send('学生不存在');
+        }
+    } catch (error) {
+        console.error('数据库操作失败:', error);
+        return res.status(500).send('更新积分失败');
+    } finally {
+        if (connection) {
+            connection.release(); // 只有在connection已被赋值时才调用release
+        }
+    }
+}
+
+async function getStudentScore(req, res) {
+    const { student_id } = req.body;
+    let connection;
+
+    try {
+        connection = await pool.getConnection();
+
+        // 查询指定学生的分数
+        const [rows] = await connection.query(
+            'SELECT score FROM students WHERE student_id =?',
+            [student_id]
+        );
+
+        if (rows.length > 0) {
+            const score = rows[0].score;
+            // 修改这里，构建包含student_id和score的对象并返回
+            return res.json({ student_id, score });
+        } else {
+            return res.status(404).json({ message: '学生不存在' });
+        }
+    } catch (error) {
+        console.error('数据库操作失败:', error);
+        return res.status(500).json({ error: '获取分数失败' });
+    } finally {
+        if (connection) {
+            connection.release();
+        }
+    }
+}
 
+module.exports = { updateScore, getStudentScore };
     try {
         const connection = await pool.getConnection();
         const [result] = await connection.query('UPDATE students SET score = score + ?, call_count = call_count + 1 WHERE student_id = ?', [points, student_id]);