chore: initial import to Nexus_Edu
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SpecialX
235
backend/src/controllers/question.controller.ts
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235
backend/src/controllers/question.controller.ts
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import { Response } from 'express';
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import { AuthRequest } from '../middleware/auth.middleware';
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import prisma from '../utils/prisma';
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import { v4 as uuidv4 } from 'uuid';
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// POST /api/questions/search
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// 简单的题目搜索（按科目、难度筛选）
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export const searchQuestions = async (req: AuthRequest, res: Response) => {
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try {
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const {
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subjectId,
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questionType,
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difficulty, // exact match (legacy)
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difficultyMin,
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difficultyMax,
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keyword,
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createdBy, // 'me' or specific userId
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sortBy = 'latest', // 'latest' | 'popular'
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page = 1,
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pageSize = 10
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} = req.body;
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const skip = (page - 1) * pageSize;
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const where: any = {
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isDeleted: false,
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...(subjectId && { subjectId }),
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...(questionType && { questionType }),
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...(keyword && { content: { contains: keyword } }),
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};
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// Difficulty range
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if (difficultyMin || difficultyMax) {
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where.difficulty = {};
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if (difficultyMin) where.difficulty.gte = difficultyMin;
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if (difficultyMax) where.difficulty.lte = difficultyMax;
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} else if (difficulty) {
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where.difficulty = difficulty;
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}
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// CreatedBy filter
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if (createdBy === 'me') {
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where.createdBy = req.userId;
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} else if (createdBy) {
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where.createdBy = createdBy;
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}
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// Sorting
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let orderBy: any = { createdAt: 'desc' };
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if (sortBy === 'popular') {
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orderBy = { usageCount: 'desc' }; // Assuming usageCount exists, otherwise fallback to createdAt
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}
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// 查询题目
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const [questions, totalCount] = await Promise.all([
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prisma.question.findMany({
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where,
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select: {
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id: true,
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content: true,
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questionType: true,
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difficulty: true,
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answer: true,
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explanation: true,
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createdAt: true,
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createdBy: true,
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knowledgePoints: {
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select: {
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knowledgePoint: {
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select: {
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name: true
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}
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}
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}
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}
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},
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skip,
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take: pageSize,
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orderBy
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}),
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prisma.question.count({ where })
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]);
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// 映射到前端 DTO
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const items = questions.map(q => ({
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id: q.id,
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content: q.content,
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type: q.questionType,
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difficulty: q.difficulty,
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answer: q.answer,
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parse: q.explanation,
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knowledgePoints: q.knowledgePoints.map(kp => kp.knowledgePoint.name),
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isMyQuestion: q.createdBy === req.userId
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}));
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res.json({
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items,
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totalCount,
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pageIndex: page,
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pageSize
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});
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} catch (error) {
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console.error('Search questions error:', error);
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res.status(500).json({ error: 'Failed to search questions' });
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}
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};
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// POST /api/questions
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// 创建题目
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export const createQuestion = async (req: AuthRequest, res: Response) => {
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try {
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const { subjectId, content, questionType, difficulty = 3, answer, explanation, optionsConfig, knowledgePoints } = req.body;
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if (!subjectId || !content || !questionType || !answer) {
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return res.status(400).json({ error: 'Missing required fields' });
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}
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const questionId = uuidv4();
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// Handle knowledge points connection if provided
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// This is a simplified version, ideally we should resolve KP IDs first
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const question = await prisma.question.create({
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data: {
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id: questionId,
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subjectId,
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content,
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questionType,
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difficulty,
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answer,
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explanation,
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optionsConfig: optionsConfig || null,
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createdBy: req.userId!,
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updatedBy: req.userId!
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}
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});
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res.json({
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id: question.id,
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message: 'Question created successfully'
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});
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} catch (error) {
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console.error('Create question error:', error);
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res.status(500).json({ error: 'Failed to create question' });
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}
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};
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// PUT /api/questions/:id
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export const updateQuestion = async (req: AuthRequest, res: Response) => {
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try {
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const { id } = req.params;
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const { content, questionType, difficulty, answer, explanation, optionsConfig } = req.body;
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const question = await prisma.question.findUnique({ where: { id } });
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if (!question) return res.status(404).json({ error: 'Question not found' });
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// Only creator can update (or admin)
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if (question.createdBy !== req.userId) {
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// For now, let's assume strict ownership.
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// In real app, check role.
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return res.status(403).json({ error: 'Permission denied' });
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}
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await prisma.question.update({
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where: { id },
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data: {
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content,
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questionType,
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difficulty,
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answer,
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explanation,
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optionsConfig: optionsConfig || null,
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updatedBy: req.userId!
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}
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});
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res.json({ message: 'Question updated successfully' });
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} catch (error) {
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console.error('Update question error:', error);
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res.status(500).json({ error: 'Failed to update question' });
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}
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};
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// DELETE /api/questions/:id
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export const deleteQuestion = async (req: AuthRequest, res: Response) => {
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try {
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const { id } = req.params;
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const question = await prisma.question.findUnique({ where: { id } });
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if (!question) return res.status(404).json({ error: 'Question not found' });
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if (question.createdBy !== req.userId) {
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return res.status(403).json({ error: 'Permission denied' });
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}
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await prisma.question.update({
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where: { id },
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data: { isDeleted: true }
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});
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res.json({ message: 'Question deleted successfully' });
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} catch (error) {
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console.error('Delete question error:', error);
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res.status(500).json({ error: 'Failed to delete question' });
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}
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};
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// POST /api/questions/parse-text
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export const parseText = async (req: AuthRequest, res: Response) => {
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try {
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const { text } = req.body;
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if (!text) return res.status(400).json({ error: 'Text is required' });
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// 简单的模拟解析逻辑
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// 假设每行是一个题目，或者用空行分隔
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const questions = text.split(/\n\s*\n/).map((block: string) => {
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const lines = block.trim().split('\n');
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const content = lines[0];
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const options = lines.slice(1).filter((l: string) => /^[A-D]\./.test(l));
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return {
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content: content,
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type: options.length > 0 ? 'SingleChoice' : 'Subjective',
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options: options.length > 0 ? options : undefined,
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answer: 'A', // 默认答案
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parse: '解析暂无'
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};
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});
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res.json(questions);
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} catch (error) {
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console.error('Parse text error:', error);
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res.status(500).json({ error: 'Failed to parse text' });
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}
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};
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