新增优惠券领取相关接口

routes/coupon.js

@@ -0,0 +1,51 @@
+const express = require('express');
+const router = express.Router();
+const { getDB } = require('../database');
+const { auth } = require('../middleware/auth');
+
+
+router.get('/', auth, async (req, res) => {
+  try {
+    const db = getDB();
+    const query = `
+      SELECT * FROM coupon_products where remain > 0
+    `
+    const [coupon] = await db.query(query);
+
+    if (coupon.length === 0) {
+      res.json({ error: '暂无优惠券' });
+    } 
+
+    res.json({coupon, success: true});
+  } catch (error) {
+    res.status(500).json({ error: '获取优惠券失败' });
+  }
+});
+router.get('/:id', auth, async (req, res) => {
+  try {
+    const userId = req.params.id;
+    const db = getDB();
+    const query = `
+      SELECT * FROM coupon_products where remain > 0
+    `
+    const [coupon] = await db.query(query);
+
+    if (coupon.length === 0) {
+      return res.status(404).json({ error: '暂无优惠券' });
+    } else {
+      const query = [`
+      update coupon_products set remain = remain - 1 where id = ?
+      `,`
+      insert into coupon_use (user_id, coupon_id, get_time) values (?, ?, now())
+      `]
+      await db.query(query[0], [coupon[0].id]);
+      await db.query(query[1], [userId, coupon[0].id]);
+    }
+
+    res.json({coupon, success: true});
+  } catch (error) {
+    res.status(500).json({ error: '获取优惠券失败' });
+  }
+});
+
+module.exports = router;

server.js

@@ -249,6 +249,9 @@ app.use('/api/announcements', require('./routes/announcements')); // 通知公
 app.use('/api/wechat-pay', require('./routes/wechatPay')); // 只保留微信支付
 app.use('/api/payment', require('./routes/payment'));
 
+// 优惠券路由
+app.use('/api/coupon', require('./routes/coupon'));
+
 // 前端路由 - 必须在最后，作为fallback
 app.get('/', (req, res) => {
   res.removeHeader('Origin-Agent-Cluster');