Version: 0.1.2.dev.260207

feat: ⚠️ 批量导入课程接口支持冲突预检测与冲突提示

- 批量导入课程接口支持预先检测冲突
- 返回并展示具体发生冲突的课程信息 📚💥
- 补全此前规划的冲突提示功能（把大饼补上了 🍞）

refactor: 🧱 使用工作单元模式管理 dao 层事务

- 引入工作单元模式（Unit of Work）统一管理 dao 层
- 新建全局事务，使跨 repo 的 gorm 事务管理更加方便 🔁

fix: 🐛 修复将任务块添加进日程接口的多个问题

- 修复核心逻辑 bug（费了老大劲 😵‍💫）
- 补充并覆盖该接口的多种异常与错误场景测试 🧪

backend/conv/schedule.go

@@ -0,0 +1,61 @@
+package conv
+
+import (
+	"fmt"
+
+	"github.com/LoveLosita/smartflow/backend/model"
+)
+
+import "sort"
+
+func SchedulesToScheduleConflictDetail(schedules []model.Schedule) []model.ScheduleConflictDetail {
+	if len(schedules) == 0 {
+		return []model.ScheduleConflictDetail{}
+	}
+	// 1. 使用 Map 进行逻辑分组
+	// Key 格式: EventID-Week-Day (防止同一事件在不同天出现时被混为一谈)
+	groups := make(map[string]*model.ScheduleConflictDetail)
+	for _, s := range schedules {
+		key := fmt.Sprintf("%d-%d-%d", s.EventID, s.Week, s.DayOfWeek)
+
+		if _, ok := groups[key]; !ok {
+			// 初始化该分组
+			groups[key] = &model.ScheduleConflictDetail{
+				EventID:   s.EventID,
+				Name:      s.Event.Name,
+				Location:  *s.Event.Location, // 假设字段是 *string
+				Type:      s.Event.Type,
+				Week:      s.Week,
+				DayOfWeek: s.DayOfWeek,
+			}
+		}
+		// 将当前节次加入数组
+		groups[key].Sections = append(groups[key].Sections, s.Section)
+	}
+
+	// 2. 处理每个分组的区间逻辑
+	res := make([]model.ScheduleConflictDetail, 0, len(groups))
+	for _, detail := range groups {
+		// 排序节次，例如把 [3, 1, 2] 变成 [1, 2, 3]
+		sort.Ints(detail.Sections)
+
+		// 最小值即起始，最大值即结束
+		detail.StartSection = detail.Sections[0]
+		detail.EndSection = detail.Sections[len(detail.Sections)-1]
+
+		res = append(res, *detail)
+	}
+
+	// 3. 可选：对结果集按时间排序，让前端收到的 DTO 也是有序的
+	sort.Slice(res, func(i, j int) bool {
+		if res[i].Week != res[j].Week {
+			return res[i].Week < res[j].Week
+		}
+		if res[i].DayOfWeek != res[j].DayOfWeek {
+			return res[i].DayOfWeek < res[j].DayOfWeek
+		}
+		return res[i].StartSection < res[j].StartSection
+	})
+
+	return res
+}

backend/conv/task-class.go

@@ -137,12 +137,12 @@ func ProcessUserGetCompleteTaskClassRequest(taskClass *model.TaskClass) (*model.
 }
 
 // UserInsertTaskItemRequestToModel 用于将填入空闲时段日程的请求转换为 Schedule 模型
-func UserInsertTaskItemRequestToModel(req *model.UserInsertTaskClassItemToScheduleRequest, item *model.TaskClassItem, taskID, userID, startSection, endSection int) ([]model.Schedule, *model.ScheduleEvent) {
+func UserInsertTaskItemRequestToModel(req *model.UserInsertTaskClassItemToScheduleRequest, item *model.TaskClassItem, taskID *int, userID, startSection, endSection int) ([]model.Schedule, *model.ScheduleEvent) {
 	var schedules []model.Schedule
 	for section := startSection; section <= endSection; section++ {
 		req1 := &model.Schedule{
-			UserID:         userID, // 由调用方填充
-			EmbeddedTaskID: &taskID,
+			UserID:         userID,
+			EmbeddedTaskID: taskID,
 			Week:           req.Week,
 			DayOfWeek:      req.DayOfWeek,
 			Section:        section,