122 lines
4.7 KiB
Go
122 lines
4.7 KiB
Go
package models
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import (
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"time"
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"gorm.io/gorm"
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)
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// WrongQuestion 错题记录
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type WrongQuestion struct {
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ID int64 `gorm:"primarykey" json:"id"`
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UserID int64 `gorm:"index;not null" json:"user_id"`
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QuestionID int64 `gorm:"index;not null" json:"question_id"`
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FirstWrongTime time.Time `json:"first_wrong_time"`
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LastWrongTime time.Time `json:"last_wrong_time"`
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TotalWrongCount int `gorm:"default:1" json:"total_wrong_count"`
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MasteryLevel int `gorm:"default:0" json:"mastery_level"` // 0-100
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ConsecutiveCorrect int `gorm:"default:0" json:"consecutive_correct"`
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IsMastered bool `gorm:"default:false" json:"is_mastered"`
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CreatedAt time.Time `json:"created_at"`
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UpdatedAt time.Time `json:"updated_at"`
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DeletedAt gorm.DeletedAt `gorm:"index" json:"-"`
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// 关联
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PracticeQuestion *PracticeQuestion `gorm:"foreignKey:QuestionID;references:ID" json:"question,omitempty"`
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History []WrongQuestionHistory `gorm:"foreignKey:WrongQuestionID" json:"history,omitempty"`
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}
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// WrongQuestionHistory 错误历史记录
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type WrongQuestionHistory struct {
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ID int64 `gorm:"primarykey" json:"id"`
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WrongQuestionID int64 `gorm:"index;not null" json:"wrong_question_id"`
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UserAnswer string `gorm:"type:jsonb;not null" json:"user_answer"` // JSON 存储
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CorrectAnswer string `gorm:"type:jsonb;not null" json:"correct_answer"` // JSON 存储
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AnsweredAt time.Time `gorm:"index" json:"answered_at"`
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TimeSpent int `json:"time_spent"` // 答题用时（秒）
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IsCorrect bool `json:"is_correct"`
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}
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// TableName 指定表名
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func (WrongQuestion) TableName() string {
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return "wrong_questions"
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}
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// TableName 指定表名
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func (WrongQuestionHistory) TableName() string {
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return "wrong_question_history"
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}
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// WrongQuestionDTO 错题数据传输对象
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type WrongQuestionDTO struct {
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ID int64 `json:"id"`
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QuestionID int64 `json:"question_id"`
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Question *PracticeQuestionDTO `json:"question"`
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FirstWrongTime time.Time `json:"first_wrong_time"`
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LastWrongTime time.Time `json:"last_wrong_time"`
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TotalWrongCount int `json:"total_wrong_count"`
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MasteryLevel int `json:"mastery_level"`
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ConsecutiveCorrect int `json:"consecutive_correct"`
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IsMastered bool `json:"is_mastered"`
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RecentHistory []WrongQuestionHistoryDTO `json:"recent_history,omitempty"` // 最近3次历史
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}
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// WrongQuestionHistoryDTO 错误历史 DTO
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type WrongQuestionHistoryDTO struct {
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ID int64 `json:"id"`
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UserAnswer interface{} `json:"user_answer"`
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CorrectAnswer interface{} `json:"correct_answer"`
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AnsweredAt time.Time `json:"answered_at"`
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TimeSpent int `json:"time_spent"`
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IsCorrect bool `json:"is_correct"`
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}
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// WrongQuestionStats 错题统计
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type WrongQuestionStats struct {
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TotalWrong int `json:"total_wrong"` // 总错题数
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Mastered int `json:"mastered"` // 已掌握数
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NotMastered int `json:"not_mastered"` // 未掌握数
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NeedReview int `json:"need_review"` // 需要复习数
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TypeStats map[string]int `json:"type_stats"` // 按题型统计
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CategoryStats map[string]int `json:"category_stats"` // 按分类统计
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MasteryLevelDist map[string]int `json:"mastery_level_dist"` // 掌握度分布
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TrendData []TrendPoint `json:"trend_data"` // 错题趋势
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}
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// TrendPoint 趋势数据点
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type TrendPoint struct {
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Date string `json:"date"`
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Count int `json:"count"`
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}
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// RecordWrongAnswer 记录错误答案
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func (wq *WrongQuestion) RecordWrongAnswer() {
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now := time.Now()
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if wq.FirstWrongTime.IsZero() {
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wq.FirstWrongTime = now
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}
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wq.LastWrongTime = now
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wq.TotalWrongCount++
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wq.ConsecutiveCorrect = 0 // 重置连续答对次数
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wq.IsMastered = false // 重新标记为未掌握
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wq.MasteryLevel = 0 // 重置掌握度
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}
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// RecordCorrectAnswer 记录正确答案
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func (wq *WrongQuestion) RecordCorrectAnswer() {
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wq.ConsecutiveCorrect++
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// 根据连续答对次数更新掌握度（每答对一次增加16.67%）
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// 连续答对6次即达到100%
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wq.MasteryLevel = (wq.ConsecutiveCorrect * 100) / 6
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if wq.MasteryLevel > 100 {
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wq.MasteryLevel = 100
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}
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// 连续答对6次标记为已掌握
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if wq.ConsecutiveCorrect >= 6 {
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wq.IsMastered = true
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wq.MasteryLevel = 100
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}
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}
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