package models

import (
	"gorm.io/datatypes"
	"time"
)

// UserAnswerRecord 用户答题记录
type UserAnswerRecord struct {
	ID         int64          `gorm:"primarykey"`
	UserID     int64          `gorm:"index;not null" json:"user_id"`     // 用户ID
	QuestionID int64          `gorm:"index;not null" json:"question_id"` // 题目ID
	IsCorrect  bool           `gorm:"not null" json:"is_correct"`        // 是否答对
	AnsweredAt time.Time      `gorm:"not null" json:"answered_at"`       // 答题时间
	UserAnswer datatypes.JSON `gorm:"json" json:"user_answer"`
}

// TableName 指定表名
func (UserAnswerRecord) TableName() string {
	return "user_answer_records"
}

// UserStatistics 用户统计数据
type UserStatistics struct {
	TotalQuestions    int     `json:"total_questions"`    // 题库总数
	AnsweredQuestions int     `json:"answered_questions"` // 已答题数
	CorrectAnswers    int     `json:"correct_answers"`    // 答对题数
	WrongQuestions    int     `json:"wrong_questions"`    // 错题数量
	Accuracy          float64 `json:"accuracy"`           // 正确率
}