feat: 支持限制活动打卡的总次数

dao/checkin.go

@@ -23,6 +23,17 @@ func (c CheckinDAO) FindUserActivityByDay(userID int, activityID int, day string
 	}
 	return &userActivity
 }
+func (c CheckinDAO) FindUserActivityInHistorySince(userID int, activityID int) *po.UserActivity {
+	var userActivity po.UserActivity
+	err := c.Tx.Take(&userActivity, "user_id=? and activity_id=?", userID, activityID).Error
+	if err == gorm.ErrRecordNotFound {
+		return nil
+	}
+	if err != nil {
+		panic(err)
+	}
+	return &userActivity
+}
 func (c CheckinDAO) CreateCheckin(userID int, activityID int, files string) (*po.UserActivity, error) {
 	if activity := c.FindActivityByID(activityID); activity == nil {
 		return nil, errors.New("activityID不存在")