feat: 多班级版班级管理系统 v2.0
技术栈：Go (Gin + GORM) + PHP + MySQL 5.7 + Redis 主要功能： - 多班级完全隔离（class_id 贯穿全系统） - 后端 Go Gin（端口 56789），Nginx 反代 - 超级管理员独立登录（env 配置，默认账密 admin/Admin123） - bcrypt 密码加密（无 PASSWORD_SALT） - 科任老师/课代表新角色 - 课代表作业管理页面 - 排行榜分项排行（操行分/考勤/作业） - 角色加减分上下限由班主任配置 - 家长改密功能（可开关） - 班级角色按需开关 - 宿舍号格式：南0-000 - 周度/月度重置功能 - MySQL 5.7 兼容 - 43 轮代码审查 + 全部修复 开发者: Canglan 版权归属: Sea Network Technology Studio 许可证: Apache License 2.0
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226
backend-go/internal/service/attendance_service.go
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226
backend-go/internal/service/attendance_service.go
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// ===========================================
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// 多班级版班级管理系统 - Go 后端
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//
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// 开发者: Canglan
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// 联系方式: admin@sea-studio.top
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// 版权归属: Sea Network Technology Studio
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// 许可证: Apache License 2.0
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//
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// 版权所有 © Sea Network Technology Studio
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// ===========================================
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package service
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import (
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"fmt"
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"strconv"
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"time"
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"gorm.io/gorm"
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"hz-gitea.sea-studio.top/canglan/SharedClassManager/internal/model"
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"hz-gitea.sea-studio.top/canglan/SharedClassManager/internal/repository"
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"hz-gitea.sea-studio.top/canglan/SharedClassManager/pkg/logger"
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)
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// AttendanceService 考勤服务
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type AttendanceService struct {
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attendanceRepo *repository.AttendanceRepo
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studentRepo *repository.StudentRepo
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userRepo *repository.UserRepo
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conductRepo *repository.ConductRepo
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semesterRepo *repository.SemesterRepo
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settingRepo *repository.SystemSettingRepo
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classRepo *repository.ClassRepo
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}
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// NewAttendanceService 创建考勤服务
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func NewAttendanceService(
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attendanceRepo *repository.AttendanceRepo,
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studentRepo *repository.StudentRepo,
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userRepo *repository.UserRepo,
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conductRepo *repository.ConductRepo,
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semesterRepo *repository.SemesterRepo,
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settingRepo *repository.SystemSettingRepo,
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classRepo *repository.ClassRepo,
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) *AttendanceService {
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return &AttendanceService{
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attendanceRepo: attendanceRepo,
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studentRepo: studentRepo,
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userRepo: userRepo,
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conductRepo: conductRepo,
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semesterRepo: semesterRepo,
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settingRepo: settingRepo,
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classRepo: classRepo,
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}
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}
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// CreateRecord 创建考勤记录
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func (s *AttendanceService) CreateRecord(studentID int, dateStr, slot, status string, reason *string,
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applyDeduction bool, customDeduction *int, recorderID int, classID int) (map[string]interface{}, error) {
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// 校验学生是否属于当前班级（#7）
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student, err := s.studentRepo.GetByID(studentID)
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if err != nil || student == nil || student.ClassID != classID {
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return map[string]interface{}{"success": false, "message": "学生不属于当前班级"}, nil
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}
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// 解析日期
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parsedDate, err := time.Parse("2006-01-02", dateStr)
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if err != nil {
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return map[string]interface{}{"success": false, "message": "日期格式错误"}, nil
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}
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// 获取活跃学期
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var semesterID *int
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activeSemester, _ := s.semesterRepo.GetActive()
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if activeSemester != nil {
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semesterID = &activeSemester.SemesterID
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}
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record := &model.AttendanceRecord{
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StudentID: studentID,
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Date: parsedDate,
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Slot: slot,
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Status: status,
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Reason: reason,
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RecorderID: recorderID,
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SemesterID: semesterID,
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}
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createResult, err := s.attendanceRepo.CreateRecord(record)
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if err != nil {
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return map[string]interface{}{"success": false, "message": "添加考勤记录失败"}, nil
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}
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attendanceID := createResult.AttendanceID
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// 更新已有记录时，先撤销旧扣分再应用新扣分
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if createResult.IsUpdate && createResult.OldDeductionApplied == 1 && createResult.OldDeductionRecordID != nil {
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if err := s.conductRepo.RevokeRecord(*createResult.OldDeductionRecordID, recorderID); err != nil {
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logger.Sugared.Errorf("撤销旧考勤扣分失败: attendance_id=%d, old_record_id=%d, err=%v",
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attendanceID, *createResult.OldDeductionRecordID, err)
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return nil, fmt.Errorf("撤销旧扣分失败，操作已中止以避免双重扣分: %w", err)
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}
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}
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// 应用扣分（事务保护，避免数据不一致）
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if applyDeduction && (status == "absent" || status == "late" || status == "leave") {
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// 校验自定义扣分值必须为非负数
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if customDeduction != nil && *customDeduction < 0 {
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return map[string]interface{}{"success": false, "message": "自定义扣分值不能为负数"}, nil
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}
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var pointsChange int
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if customDeduction != nil {
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pointsChange = -*customDeduction
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} else {
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pointsChange = s.getDeductionPoints(classID, status)
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}
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if pointsChange == 0 {
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return map[string]interface{}{"success": true, "message": "考勤记录添加成功（不扣分）"}, nil
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}
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// 获取操作人姓名
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recorderName := "班主任"
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user, err := s.userRepo.GetByUserID(recorderID)
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if err == nil && user != nil {
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recorderName = user.RealName
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}
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statusText := map[string]string{
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"absent": "缺勤", "late": "迟到", "leave": "请假",
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}[status]
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// 使用事务确保操行分记录创建、总分更新、考勤标记的原子性
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db := s.semesterRepo.GetDB()
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txErr := db.Transaction(func(tx *gorm.DB) error {
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conductRecord := &model.ConductRecord{
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StudentID: studentID,
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PointsChange: pointsChange,
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Reason: fmt.Sprintf("考勤：%s", statusText),
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RecorderID: recorderID,
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RecorderName: &recorderName,
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RelatedType: "attendance",
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RelatedID: &attendanceID,
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SemesterID: semesterID,
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}
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if err := tx.Create(conductRecord).Error; err != nil {
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return err
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}
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if err := tx.Model(&model.Student{}).
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Where("student_id = ?", studentID).
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Update("total_points", gorm.Expr("GREATEST(total_points + ?, 0)", pointsChange)).Error; err != nil {
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return err
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}
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if err := tx.Model(&model.AttendanceRecord{}).
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Where("attendance_id = ?", attendanceID).
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Updates(map[string]interface{}{
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"deduction_applied": 1,
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"deduction_record_id": conductRecord.RecordID,
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}).Error; err != nil {
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return err
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}
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return nil
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})
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if txErr != nil {
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logger.Sugared.Errorf("考勤扣分事务失败: attendance_id=%d, student_id=%d, err=%v", attendanceID, studentID, txErr)
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return map[string]interface{}{
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"success": false,
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"message": "考勤记录添加成功，但扣分失败，请手动处理",
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"attendance_id": attendanceID,
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"deduction_failed": true,
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}, nil
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}
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logger.Sugared.Infof("用户[%d] 添加考勤记录[%d] -> %s (扣%d分)", recorderID, attendanceID, status, -pointsChange)
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}
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return map[string]interface{}{"success": true, "message": "考勤记录添加成功"}, nil
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}
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// GetRecords 获取考勤记录
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func (s *AttendanceService) GetRecords(classID int, date string, studentID *int, slot string) (map[string]interface{}, error) {
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records, err := s.attendanceRepo.GetClassRecords(classID, date, derefInt(studentID), slot)
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if err != nil {
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return nil, err
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}
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return map[string]interface{}{"records": records}, nil
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}
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// getClassSettingValue 从 class_settings 读取设置值，若无则返回默认值
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func (s *AttendanceService) getClassSettingValue(classID int, key, defaultVal string) string {
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if classID > 0 && s.classRepo != nil {
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setting, err := s.classRepo.GetSetting(classID, key)
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if err == nil && setting != nil && setting.SettingValue != "" {
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return setting.SettingValue
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}
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}
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return defaultVal
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}
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// getDeductionPoints 获取考勤扣分数值（优先从 class_settings 读取班级级配置）
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func (s *AttendanceService) getDeductionPoints(classID int, status string) int {
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switch status {
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case "absent":
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val := s.getClassSettingValue(classID, "deduction_attendance_absent", "3")
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if v, err := strconv.Atoi(val); err == nil {
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return -v
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}
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return -3
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case "late":
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val := s.getClassSettingValue(classID, "deduction_attendance_late", "1")
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if v, err := strconv.Atoi(val); err == nil {
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return -v
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}
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return -1
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case "leave":
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val := s.getClassSettingValue(classID, "deduction_attendance_leave", "0")
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if v, err := strconv.Atoi(val); err == nil {
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return -v
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}
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return 0
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default:
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return 0
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}
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}
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