按实际纯币金额计算租客优惠与积分

backend/internal/modules/rentergrowth/growth.go

@@ -26,6 +26,7 @@ const (
 	MaxLevelPoints           = 1_000_000_000
 	MaxLevelQuotaCent        = 100_000_000
 	SourceOrderCompleted     = "order_completed"
+	SourceOrderRefunded      = "order_refunded"
 	SourceAdminAdjustment    = "admin_adjustment"
 )
 
@@ -243,7 +244,7 @@ func CalculateDiscountCent(originalRentCent int64, platformFeeCent int64, discou
 	return discountCent
 }
 
-func AwardOrderCompleted(tx *gorm.DB, order *model.RentalOrder, actualRentCent int64, source string) error {
+func AwardOrderCompleted(tx *gorm.DB, order *model.RentalOrder, actualPureCoinCent int64, source string) error {
 	if tx == nil || order == nil || order.ID == 0 || order.RenterID == 0 {
 		return nil
 	}
@@ -271,10 +272,12 @@ func AwardOrderCompleted(tx *gorm.DB, order *model.RentalOrder, actualRentCent i
 	if err != nil {
 		return err
 	}
+	order.GrowthPointsBasisCent = maxInt64(actualPureCoinCent, 0)
+	order.GrowthPointsPerYuan = cfg.PointsPerYuan
 	if !cfg.Enabled {
 		return nil
 	}
-	points := PointsForRent(actualRentCent, cfg.PointsPerYuan)
+	points := PointsForPureCoin(actualPureCoinCent, cfg.PointsPerYuan)
 	if points <= 0 {
 		return nil
 	}
@@ -293,16 +296,18 @@ func AwardOrderCompleted(tx *gorm.DB, order *model.RentalOrder, actualRentCent i
 	}
 	now := time.Now()
 	ledger := model.RenterGrowthLedger{
-		UserID:       order.RenterID,
-		OrderID:      &order.ID,
-		Points:       points,
-		BeforePoints: beforePoints,
-		AfterPoints:  afterPoints,
-		BeforeLevel:  beforeLevel.Code,
-		AfterLevel:   afterLevel.Code,
-		Source:       source,
-		Remark:       "租号订单完成发放成长积分",
-		CreatedAt:    now,
+		UserID:          order.RenterID,
+		OrderID:         &order.ID,
+		Points:          points,
+		BasisAmountCent: actualPureCoinCent,
+		PointsPerYuan:   cfg.PointsPerYuan,
+		BeforePoints:    beforePoints,
+		AfterPoints:     afterPoints,
+		BeforeLevel:     beforeLevel.Code,
+		AfterLevel:      afterLevel.Code,
+		Source:          source,
+		Remark:          "租号订单完成发放成长积分",
+		CreatedAt:       now,
 	}
 	if err := tx.Create(&ledger).Error; err != nil {
 		return err
@@ -312,14 +317,90 @@ func AwardOrderCompleted(tx *gorm.DB, order *model.RentalOrder, actualRentCent i
 	return nil
 }
 
-func PointsForRent(actualRentCent int64, pointsPerYuan int64) int64 {
-	if actualRentCent <= 0 {
+// RevokeOrderCompleted 在已完成订单被全额人工退款后扣回该单已发放的成长积分。
+func RevokeOrderCompleted(tx *gorm.DB, order *model.RentalOrder) error {
+	if tx == nil || order == nil || order.ID == 0 || order.RenterID == 0 {
+		return nil
+	}
+	var existing model.RenterGrowthLedger
+	err := tx.Where("order_id = ? AND source = ?", order.ID, SourceOrderRefunded).First(&existing).Error
+	if err == nil {
+		return nil
+	}
+	if !errors.Is(err, gorm.ErrRecordNotFound) {
+		return err
+	}
+
+	points := order.GrowthPointsAwarded
+	if points <= 0 {
+		var awarded model.RenterGrowthLedger
+		if err := tx.Where("order_id = ? AND source = ?", order.ID, SourceOrderCompleted).First(&awarded).Error; err != nil {
+			if errors.Is(err, gorm.ErrRecordNotFound) {
+				return nil
+			}
+			return err
+		}
+		points = awarded.Points
+	}
+	if points <= 0 {
+		return nil
+	}
+
+	cfg, err := ConfigForTx(tx)
+	if err != nil {
+		return err
+	}
+	var user model.User
+	if err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).First(&user, order.RenterID).Error; err != nil {
+		return err
+	}
+	beforePoints := maxInt64(user.RenterGrowthPoints, 0)
+	revokedPoints := points
+	if revokedPoints > beforePoints {
+		revokedPoints = beforePoints
+	}
+	beforeLevel := LevelForPoints(cfg, beforePoints)
+	afterPoints := beforePoints - revokedPoints
+	afterLevel := LevelForPoints(cfg, afterPoints)
+	if !cfg.Enabled {
+		beforeLevel = LevelRule{Code: DefaultLevelCode, Name: DefaultLevelName}
+		afterLevel = beforeLevel
+	}
+	user.RenterGrowthPoints = afterPoints
+	user.RenterGrowthLevel = afterLevel.Code
+	if err := tx.Save(&user).Error; err != nil {
+		return err
+	}
+	orderID := order.ID
+	return tx.Create(&model.RenterGrowthLedger{
+		UserID:          order.RenterID,
+		OrderID:         &orderID,
+		Points:          -revokedPoints,
+		BasisAmountCent: order.GrowthPointsBasisCent,
+		PointsPerYuan:   order.GrowthPointsPerYuan,
+		BeforePoints:    beforePoints,
+		AfterPoints:     afterPoints,
+		BeforeLevel:     beforeLevel.Code,
+		AfterLevel:      afterLevel.Code,
+		Source:          SourceOrderRefunded,
+		Remark:          "已完成订单全额退款扣回成长积分",
+		CreatedAt:       time.Now(),
+	}).Error
+}
+
+func PointsForPureCoin(actualPureCoinCent int64, pointsPerYuan int64) int64 {
+	if actualPureCoinCent <= 0 {
 		return 0
 	}
 	if pointsPerYuan <= 0 {
 		pointsPerYuan = DefaultPointsPerYuan
 	}
-	return (actualRentCent / 100) * pointsPerYuan
+	return (actualPureCoinCent / 100) * pointsPerYuan
+}
+
+// PointsForRent 保留旧调用兼容，积分基数现统一解释为实际纯币金额。
+func PointsForRent(actualPureCoinCent int64, pointsPerYuan int64) int64 {
+	return PointsForPureCoin(actualPureCoinCent, pointsPerYuan)
 }
 
 func LevelForPoints(cfg Config, points int64) LevelRule {