第一版提交，答题功能OK，题库管理待完善

api/controllers/backupController.ts

@@ -0,0 +1,174 @@
+import { Request, Response } from 'express';
+import * as XLSX from 'xlsx';
+import { UserModel, QuestionModel, QuizModel } from '../models';
+
+export class BackupController {
+  // 导出用户数据
+  static async exportUsers(req: Request, res: Response) {
+    try {
+      const result = await UserModel.findAll(10000, 0);
+      const usersData = result.users.map(user => ({
+        ID: user.id,
+        姓名: user.name,
+        手机号: user.phone,
+        创建时间: user.createdAt
+      }));
+
+      res.json({
+        success: true,
+        data: usersData
+      });
+    } catch (error: any) {
+      res.status(500).json({
+        success: false,
+        message: error.message || '导出用户数据失败'
+      });
+    }
+  }
+
+  // 导出问题数据
+  static async exportQuestions(req: Request, res: Response) {
+    try {
+      const { type } = req.query;
+      
+      const result = await QuestionModel.findAll({
+        type: type as string,
+        limit: 10000,
+        offset: 0
+      });
+      
+      const questionsData = result.questions.map(question => ({
+        ID: question.id,
+        题目内容: question.content,
+        题型: question.type,
+        题目类别: question.category,
+        选项: question.options ? question.options.join('|') : '',
+        标准答案: Array.isArray(question.answer) ? question.answer.join(',') : question.answer,
+        分值: question.score,
+        创建时间: question.createdAt
+      }));
+
+      res.json({
+        success: true,
+        data: questionsData
+      });
+    } catch (error: any) {
+      res.status(500).json({
+        success: false,
+        message: error.message || '导出问题数据失败'
+      });
+    }
+  }
+
+  // 导出答题记录
+  static async exportRecords(req: Request, res: Response) {
+    try {
+      const result = await QuizModel.findAllRecords(10000, 0);
+      const recordsData = result.records.map((record: any) => ({
+        ID: record.id,
+        用户ID: record.userId,
+        用户名: record.userName,
+        手机号: record.userPhone,
+        总得分: record.totalScore,
+        正确题数: record.correctCount,
+        总题数: record.totalCount,
+        答题时间: record.createdAt
+      }));
+
+      res.json({
+        success: true,
+        data: recordsData
+      });
+    } catch (error: any) {
+      res.status(500).json({
+        success: false,
+        message: error.message || '导出答题记录失败'
+      });
+    }
+  }
+
+  // 导出答题答案
+  static async exportAnswers(req: Request, res: Response) {
+    try {
+      // 这里简化处理，实际应该分页获取所有答案
+      const answersData: any[] = [];
+      
+      res.json({
+        success: true,
+        data: answersData
+      });
+    } catch (error: any) {
+      res.status(500).json({
+        success: false,
+        message: error.message || '导出答题答案失败'
+      });
+    }
+  }
+
+  // 数据恢复
+  static async restoreData(req: Request, res: Response) {
+    try {
+      const { users, questions, records, answers } = req.body;
+      
+      // 数据验证
+      if (!users && !questions && !records && !answers) {
+        return res.status(400).json({
+          success: false,
+          message: '没有可恢复的数据'
+        });
+      }
+
+      let restoredCount = {
+        users: 0,
+        questions: 0,
+        records: 0,
+        answers: 0
+      };
+
+      // 恢复用户数据
+      if (users && users.length > 0) {
+        for (const user of users) {
+          try {
+            await UserModel.create({
+              name: user.姓名 || user.name,
+              phone: user.手机号 || user.phone
+            });
+            restoredCount.users++;
+          } catch (error) {
+            console.log('用户已存在，跳过:', user.手机号 || user.phone);
+          }
+        }
+      }
+
+      // 恢复题目数据
+      if (questions && questions.length > 0) {
+        for (const question of questions) {
+          try {
+            await QuestionModel.create({
+              content: question.题目内容 || question.content,
+              type: question.题型 || question.type,
+              category: question.题目类别 || question.category || '通用',
+              options: question.选项 ? (question.选项 as string).split('|') : question.options,
+              answer: question.标准答案 || question.answer,
+              score: question.分值 || question.score
+            });
+            restoredCount.questions++;
+          } catch (error) {
+            console.log('题目创建失败，跳过:', error);
+          }
+        }
+      }
+
+      res.json({
+        success: true,
+        message: '数据恢复成功',
+        data: restoredCount
+      });
+    } catch (error: any) {
+      res.status(500).json({
+        success: false,
+        message: error.message || '数据恢复失败'
+      });
+    }
+  }
+}