6446508954
后端实现： - 创建错题数据模型和数据库表结构 - 实现错题记录、查询、统计、标记和清空API - 答题错误时自动记录到错题本 - 支持重复错误累计次数和更新时间 前端实现： - 创建错题本页面，支持查看、筛选和管理错题 - 实现错题统计展示（总数、已掌握、待掌握） - 支持标记已掌握、清空错题本和重做题目 - 在首页和个人中心添加错题本入口 - 完整的响应式设计适配移动端和PC端 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
373 lines
8.8 KiB
Go
373 lines
8.8 KiB
Go
package handlers
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import (
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"ankao/internal/database"
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"ankao/internal/models"
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"encoding/json"
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"net/http"
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"strconv"
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"github.com/gin-gonic/gin"
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)
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// GetPracticeQuestions 获取练习题目列表
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func GetPracticeQuestions(c *gin.Context) {
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typeParam := c.Query("type")
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category := c.Query("category")
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page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
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pageSize, _ := strconv.Atoi(c.DefaultQuery("page_size", "100"))
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if page < 1 {
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page = 1
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}
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if pageSize < 1 || pageSize > 100 {
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pageSize = 100
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}
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db := database.GetDB()
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var questions []models.PracticeQuestion
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var total int64
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query := db.Model(&models.PracticeQuestion{})
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// 根据题型过滤 - 将前端类型映射到后端类型
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if typeParam != "" {
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backendType := mapFrontendToBackendType(typeParam)
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query = query.Where("type = ?", backendType)
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}
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// 根据分类过滤
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if category != "" {
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query = query.Where("type_name = ?", category)
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}
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// 获取总数
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query.Count(&total)
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// 分页查询
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offset := (page - 1) * pageSize
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err := query.Offset(offset).Limit(pageSize).Find(&questions).Error
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if err != nil {
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c.JSON(http.StatusInternalServerError, gin.H{
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"success": false,
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"message": "查询题目失败",
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})
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return
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}
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// 转换为DTO
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dtos := make([]models.PracticeQuestionDTO, len(questions))
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for i, q := range questions {
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dto := convertToDTO(q)
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dtos[i] = dto
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}
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c.JSON(http.StatusOK, gin.H{
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"success": true,
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"data": dtos,
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"total": total,
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})
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}
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// GetPracticeQuestionByID 获取单个练习题目
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func GetPracticeQuestionByID(c *gin.Context) {
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idStr := c.Param("id")
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id, err := strconv.ParseUint(idStr, 10, 32)
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if err != nil {
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c.JSON(http.StatusBadRequest, gin.H{
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"success": false,
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"message": "无效的题目ID",
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})
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return
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}
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db := database.GetDB()
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var question models.PracticeQuestion
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if err := db.First(&question, id).Error; err != nil {
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c.JSON(http.StatusNotFound, gin.H{
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"success": false,
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"message": "题目不存在",
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})
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return
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}
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// 转换为DTO
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dto := convertToDTO(question)
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c.JSON(http.StatusOK, gin.H{
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"success": true,
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"data": dto,
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})
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}
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// GetRandomPracticeQuestion 获取随机练习题目
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func GetRandomPracticeQuestion(c *gin.Context) {
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typeParam := c.Query("type")
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db := database.GetDB()
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var question models.PracticeQuestion
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query := db.Model(&models.PracticeQuestion{})
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if typeParam != "" {
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backendType := mapFrontendToBackendType(typeParam)
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query = query.Where("type = ?", backendType)
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}
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// 使用PostgreSQL的随机排序
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if err := query.Order("RANDOM()").First(&question).Error; err != nil {
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c.JSON(http.StatusNotFound, gin.H{
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"success": false,
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"message": "暂无题目",
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})
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return
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}
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// 转换为DTO
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dto := convertToDTO(question)
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c.JSON(http.StatusOK, gin.H{
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"success": true,
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"data": dto,
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})
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}
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// SubmitPracticeAnswer 提交练习答案
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func SubmitPracticeAnswer(c *gin.Context) {
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var submit models.PracticeAnswerSubmit
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if err := c.ShouldBindJSON(&submit); err != nil {
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c.JSON(http.StatusBadRequest, gin.H{
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"success": false,
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"message": "请求参数错误",
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})
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return
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}
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// 获取用户ID（如果已登录）
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userID, _ := c.Get("user_id")
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db := database.GetDB()
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var question models.PracticeQuestion
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if err := db.First(&question, submit.QuestionID).Error; err != nil {
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c.JSON(http.StatusNotFound, gin.H{
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"success": false,
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"message": "题目不存在",
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})
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return
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}
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// 解析正确答案
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var correctAnswer interface{}
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if err := json.Unmarshal([]byte(question.AnswerData), &correctAnswer); err != nil {
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c.JSON(http.StatusInternalServerError, gin.H{
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"success": false,
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"message": "答案数据错误",
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})
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return
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}
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// 验证答案
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correct := checkPracticeAnswer(question.Type, submit.Answer, correctAnswer)
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// 如果答错且用户已登录，记录到错题本
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if !correct && userID != nil {
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if uid, ok := userID.(uint); ok {
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// 异步记录错题，不影响主流程
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go recordWrongQuestion(uid, question.ID, submit.Answer, correctAnswer)
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}
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}
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result := models.PracticeAnswerResult{
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Correct: correct,
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UserAnswer: submit.Answer,
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CorrectAnswer: correctAnswer, // 始终返回正确答案
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}
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c.JSON(http.StatusOK, gin.H{
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"success": true,
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"data": result,
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})
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}
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// GetPracticeQuestionTypes 获取题型列表
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func GetPracticeQuestionTypes(c *gin.Context) {
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types := []gin.H{
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{
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"type": models.FillInBlank,
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"type_name": "填空题",
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},
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{
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"type": models.TrueFalseType,
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"type_name": "判断题",
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},
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{
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"type": models.MultipleChoiceQ,
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"type_name": "选择题",
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},
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{
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"type": models.MultipleSelection,
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"type_name": "多选题",
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},
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{
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"type": models.ShortAnswer,
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"type_name": "简答题",
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},
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}
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c.JSON(http.StatusOK, gin.H{
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"success": true,
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"data": types,
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})
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}
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// checkPracticeAnswer 检查练习答案是否正确
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func checkPracticeAnswer(questionType models.PracticeQuestionType, userAnswer, correctAnswer interface{}) bool {
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switch questionType {
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case models.TrueFalseType:
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// 判断题: boolean 比较
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userBool, ok1 := userAnswer.(bool)
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correctBool, ok2 := correctAnswer.(bool)
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return ok1 && ok2 && userBool == correctBool
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case models.MultipleChoiceQ:
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// 单选题: 字符串比较
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userStr, ok1 := userAnswer.(string)
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correctStr, ok2 := correctAnswer.(string)
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return ok1 && ok2 && userStr == correctStr
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case models.MultipleSelection:
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// 多选题: 数组比较
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userArr, ok1 := toStringArray(userAnswer)
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correctArr, ok2 := toStringArray(correctAnswer)
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if !ok1 || !ok2 || len(userArr) != len(correctArr) {
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return false
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}
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// 转换为map进行比较
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userMap := make(map[string]bool)
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for _, v := range userArr {
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userMap[v] = true
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}
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for _, v := range correctArr {
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if !userMap[v] {
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return false
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}
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}
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return true
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case models.FillInBlank:
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// 填空题: 数组比较
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userArr, ok1 := toStringArray(userAnswer)
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correctArr, ok2 := toStringArray(correctAnswer)
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if !ok1 || !ok2 || len(userArr) != len(correctArr) {
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return false
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}
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// 逐个比较填空答案
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for i := range correctArr {
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if userArr[i] != correctArr[i] {
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return false
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}
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}
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return true
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case models.ShortAnswer:
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// 简答题: 字符串比较(简单实现,实际可能需要更复杂的判断)
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userStr, ok1 := userAnswer.(string)
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correctStr, ok2 := correctAnswer.(string)
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return ok1 && ok2 && userStr == correctStr
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}
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return false
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}
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// toStringArray 将interface{}转换为字符串数组
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func toStringArray(v interface{}) ([]string, bool) {
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switch arr := v.(type) {
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case []string:
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return arr, true
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case []interface{}:
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result := make([]string, len(arr))
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for i, item := range arr {
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if str, ok := item.(string); ok {
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result[i] = str
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} else {
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return nil, false
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}
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}
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return result, true
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default:
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return nil, false
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}
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}
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// mapFrontendToBackendType 将前端类型映射到后端类型
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func mapFrontendToBackendType(frontendType string) models.PracticeQuestionType {
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typeMap := map[string]models.PracticeQuestionType{
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"single": models.MultipleChoiceQ, // 单选
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"multiple": models.MultipleSelection, // 多选
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"judge": models.TrueFalseType, // 判断
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"fill": models.FillInBlank, // 填空
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"short": models.ShortAnswer, // 简答
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}
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if backendType, ok := typeMap[frontendType]; ok {
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return backendType
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}
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return models.MultipleChoiceQ // 默认返回单选
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}
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// mapBackendToFrontendType 将后端类型映射到前端类型
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func mapBackendToFrontendType(backendType models.PracticeQuestionType) string {
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typeMap := map[models.PracticeQuestionType]string{
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models.MultipleChoiceQ: "single", // 单选
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models.MultipleSelection: "multiple", // 多选
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models.TrueFalseType: "judge", // 判断
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models.FillInBlank: "fill", // 填空
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models.ShortAnswer: "short", // 简答
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}
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if frontendType, ok := typeMap[backendType]; ok {
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return frontendType
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}
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return "single" // 默认返回单选
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}
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// convertToDTO 将数据库模型转换为前端DTO
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func convertToDTO(question models.PracticeQuestion) models.PracticeQuestionDTO {
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dto := models.PracticeQuestionDTO{
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ID: question.ID,
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QuestionID: question.QuestionID, // 添加题目编号
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Type: mapBackendToFrontendType(question.Type),
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Content: question.Question,
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Category: question.TypeName,
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Options: []models.Option{},
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}
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// 判断题自动生成选项
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if question.Type == models.TrueFalseType {
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dto.Options = []models.Option{
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{Key: "true", Value: "正确"},
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{Key: "false", Value: "错误"},
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}
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return dto
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}
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// 解析选项数据(如果有)
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if question.OptionsData != "" {
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var optionsMap map[string]string
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if err := json.Unmarshal([]byte(question.OptionsData), &optionsMap); err == nil {
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// 将map转换为Option数组
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for key, value := range optionsMap {
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dto.Options = append(dto.Options, models.Option{
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Key: key,
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Value: value,
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})
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}
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}
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}
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return dto
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}
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