Migrate project from typing_practiceweb

server/routes/leaderboard.ts

@@ -0,0 +1,146 @@
+// server/routes/leaderboard.ts
+import express, { Request, Response } from 'express';
+import { PracticeRecord } from '../models/PracticeRecord';
+import { auth } from '../middleware/auth';
+
+// 定义排序字段类型
+type SortField = 'totalWords' | 'accuracy' | 'duration' | 'speed';
+
+// 排序字段映射
+const sortFieldMapping = {
+  totalWords: { field: '$totalWords', label: '总单词数' },
+  accuracy: { field: '$avgAccuracy', label: '平均正确率' },
+  duration: { field: '$totalDuration', label: '练习总时长' },
+  speed: { field: '$avgSpeed', label: '平均速度' }
+};
+
+const router = express.Router();
+
+// 获取排行榜数据
+router.get('/:type', async (req: Request, res: Response) => {
+  try {
+    const { type } = req.params;
+    const { 
+      page = '1', 
+      limit = '10',
+      sortBy = 'totalWords' // 默认按总单词数排序
+    } = req.query;
+
+    const pageNum = parseInt(page as string);
+    const pageSize = parseInt(limit as string);
+    const skipCount = (pageNum - 1) * pageSize;
+    const sortField = sortBy as SortField;
+
+    if (!Object.keys(sortFieldMapping).includes(sortField)) {
+      return res.status(400).json({ error: '无效的排序字段' });
+    }
+
+    // 聚合查询
+    const records = await PracticeRecord.aggregate([
+      { $match: { type } },
+      {
+        $group: {
+          _id: '$userId',
+          username: { $first: '$username' },
+          fullname: { $first: '$fullname' },
+          totalWords: { $sum: '$stats.totalWords' },
+          avgAccuracy: { $avg: '$stats.accuracy' },
+          totalDuration: { $sum: '$stats.duration' },
+          avgSpeed: { $avg: '$stats.wordsPerMinute' },
+          lastPractice: { $max: '$stats.endTime' },
+          practiceCount: { $sum: 1 }
+        }
+      },
+      { 
+        $sort: { 
+          [sortFieldMapping[sortField].field.substring(1)]: -1 
+        } 
+      },
+      { $skip: skipCount },
+      { $limit: pageSize },
+      {
+        $project: {
+          userId: '$_id',
+          username: 1,
+          fullname: 1,
+          stats: {
+            totalWords: '$totalWords',
+            accuracy: '$avgAccuracy',
+            duration: '$totalDuration',
+            wordsPerMinute: '$avgSpeed',
+            practiceCount: '$practiceCount',
+            lastPractice: '$lastPractice'
+          }
+        }
+      }
+    ]);
+
+    // 获取总用户数
+    const totalUsers = await PracticeRecord.distinct('userId', { type });
+
+    res.json({
+      records,
+      total: totalUsers.length,
+      currentPage: pageNum,
+      totalPages: Math.ceil(totalUsers.length / pageSize),
+      sortField,
+      sortLabel: sortFieldMapping[sortField].label
+    });
+  } catch (error) {
+    console.error('获取排行榜失败:', error);
+    res.status(500).json({ error: '获取排行榜失败' });
+  }
+});
+
+// 获取用户排名
+router.get('/:type/my-rank', auth, async (req: Request, res: Response) => {
+  try {
+    const { type } = req.params;
+    const { sortBy = 'totalWords' } = req.query;
+    const sortField = sortBy as SortField;
+
+    if (!req.user?._id) {
+      return res.status(401).json({ error: '未登录' });
+    }
+
+    if (!Object.keys(sortFieldMapping).includes(sortField)) {
+      return res.status(400).json({ error: '无效的排序字段' });
+    }
+
+    // 获取所有用户的排序后记录
+    const allRecords = await PracticeRecord.aggregate([
+      { $match: { type } },
+      {
+        $group: {
+          _id: '$userId',
+          totalWords: { $sum: '$stats.totalWords' },
+          avgAccuracy: { $avg: '$stats.accuracy' },
+          totalDuration: { $sum: '$stats.duration' },
+          avgSpeed: { $avg: '$stats.wordsPerMinute' }
+        }
+      },
+      { 
+        $sort: { 
+          [sortFieldMapping[sortField].field.substring(1)]: -1 
+        } 
+      }
+    ]);
+
+    // 找到用户的排名
+    const userRank = allRecords.findIndex(record => 
+      record._id.toString() === req.user!._id
+    ) + 1;
+
+    res.json({
+      rank: userRank > 0 ? userRank : null,
+      totalParticipants: allRecords.length,
+      sortField,
+      sortLabel: sortFieldMapping[sortField].label
+    });
+  } catch (error) {
+    console.error('获取排名失败:', error);
+    res.status(500).json({ error: '获取排名失败' });
+  }
+});
+
+export default router;