add api check uncheck assignment

internal/modules/daily-checklists/services/daily-checklist.service.go

@@ -29,6 +29,7 @@ type DailyChecklistService interface {
 	AssignTasks(ctx *fiber.Ctx, id uint, req *validation.AssignTask) error
 	RemoveAssignment(ctx *fiber.Ctx, id uint, employeeID uint) error
 	GetTasks(ctx *fiber.Ctx, checklistID uint) ([]entity.DailyChecklistActivityTask, error)
+	UpdateAssignment(ctx *fiber.Ctx, req *validation.UpdateAssignment) error
 }
 
 type dailyChecklistService struct {
@@ -296,6 +297,42 @@ func (s dailyChecklistService) GetTasks(c *fiber.Ctx, checklistID uint) ([]entit
 	return tasks, nil
 }
 
+func (s dailyChecklistService) UpdateAssignment(c *fiber.Ctx, req *validation.UpdateAssignment) error {
+	if err := s.Validate.Struct(req); err != nil {
+		return err
+	}
+
+	task := new(entity.DailyChecklistActivityTask)
+	if err := s.Repository.DB().WithContext(c.Context()).First(task, req.TaskID).Error; err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			return fiber.NewError(fiber.StatusNotFound, "Task not found")
+		}
+		return err
+	}
+
+	if req.EmployeeID == 0 {
+		return fiber.NewError(fiber.StatusBadRequest, "Invalid employee id")
+	}
+
+	updates := map[string]any{"updated_at": time.Now()}
+	if req.Checked != nil {
+		updates["checked"] = *req.Checked
+	}
+	if req.Note != nil {
+		updates["note"] = *req.Note
+	}
+
+	return s.Repository.DB().WithContext(c.Context()).Clauses(clause.OnConflict{
+		Columns:   []clause.Column{{Name: "task_id"}, {Name: "employee_id"}},
+		DoUpdates: clause.Assignments(updates),
+	}).Create(&entity.DailyChecklistActivityTaskAssignment{
+		TaskId:     req.TaskID,
+		EmployeeId: req.EmployeeID,
+		Checked:    req.Checked != nil && *req.Checked,
+		Note:       req.Note,
+	}).Error
+}
+
 func parsePhaseIDs(raw string) ([]uint, error) {
 	parts := strings.Split(raw, ",")
 	result := make([]uint, 0, len(parts))