修复(#75): 按数量匹配套餐列表促销

Co-authored-by: multica-agent <github@multica.ai>

apis/types.api

@@ -229,6 +229,7 @@ type (
 		Quantity int64   `json:"quantity"`
 		Discount float64 `json:"discount"`
 		MapApple string  `json:"map_apple"`
+		Promo    *SubscribePromo `json:"promo"`
 	}
 	SubscribePromo {
 		RuleName   string `json:"rule_name"`
@@ -250,7 +251,6 @@ type (
 		UnitPrice         int64               `json:"unit_price"`
 		UnitTime          string              `json:"unit_time"`
 		Discount          []SubscribeDiscount `json:"discount"`
-		Promo             *SubscribePromo     `json:"promo"`
 		NodeCount         int64               `json:"node_count"`
 		Replacement       int64               `json:"replacement"`
 		Inventory         int64               `json:"inventory"`

common.json

@@ -4316,6 +4316,9 @@
         "discount": {
           "type": "number",
           "format": "double"
+        },
+        "promo": {
+          "$ref": "#/definitions/SubscribePromo"
         }
       },
       "title": "SubscribeDiscount",

initialize/migrate/database/02154_promo_system.up.sql

@@ -14,19 +14,155 @@ CREATE TABLE IF NOT EXISTS `promo_rule` (
   KEY `idx_enabled_priority_deleted` (`enabled`, `deleted_at`, `priority` DESC)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='促销规则表';
 
+SET @index_exists = (
+  SELECT COUNT(*)
+  FROM INFORMATION_SCHEMA.STATISTICS
+  WHERE TABLE_SCHEMA = DATABASE()
+    AND TABLE_NAME = 'promo_rule'
+    AND INDEX_NAME = 'idx_enabled_priority'
+);
+
+SET @sql = IF(
+  @index_exists = 1,
+  'ALTER TABLE `promo_rule` DROP INDEX `idx_enabled_priority`',
+  'SELECT ''Index idx_enabled_priority does not exist on promo_rule table'''
+);
+
+PREPARE stmt FROM @sql;
+EXECUTE stmt;
+DEALLOCATE PREPARE stmt;
+
+SET @index_exists = (
+  SELECT COUNT(*)
+  FROM INFORMATION_SCHEMA.STATISTICS
+  WHERE TABLE_SCHEMA = DATABASE()
+    AND TABLE_NAME = 'promo_rule'
+    AND INDEX_NAME = 'idx_deleted_at'
+);
+
+SET @sql = IF(
+  @index_exists = 1,
+  'ALTER TABLE `promo_rule` DROP INDEX `idx_deleted_at`',
+  'SELECT ''Index idx_deleted_at does not exist on promo_rule table'''
+);
+
+PREPARE stmt FROM @sql;
+EXECUTE stmt;
+DEALLOCATE PREPARE stmt;
+
+SET @index_exists = (
+  SELECT COUNT(*)
+  FROM INFORMATION_SCHEMA.STATISTICS
+  WHERE TABLE_SCHEMA = DATABASE()
+    AND TABLE_NAME = 'promo_rule'
+    AND INDEX_NAME = 'idx_enabled_priority_deleted'
+);
+
+SET @sql = IF(
+  @index_exists = 0,
+  'ALTER TABLE `promo_rule` ADD KEY `idx_enabled_priority_deleted` (`enabled`, `deleted_at`, `priority` DESC)',
+  'SELECT ''Index idx_enabled_priority_deleted already exists on promo_rule table'''
+);
+
+PREPARE stmt FROM @sql;
+EXECUTE stmt;
+DEALLOCATE PREPARE stmt;
+
 CREATE TABLE IF NOT EXISTS `subscribe_promo` (
   `id` BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
   `subscribe_id` BIGINT UNSIGNED NOT NULL COMMENT '套餐规格 ID',
-  `quantity` INT NOT NULL DEFAULT 0 COMMENT '购买数量',
+  `quantity` BIGINT NOT NULL DEFAULT 1 COMMENT '购买数量',
   `promo_rule_id` BIGINT UNSIGNED NOT NULL COMMENT '促销规则 ID',
   `promo_price` BIGINT NOT NULL DEFAULT 0 COMMENT '该规格在此规则下的优惠价（分）',
   `created_at` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
   `updated_at` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
   PRIMARY KEY (`id`),
-  UNIQUE KEY `uk_subscribe_qty_rule` (`subscribe_id`, `quantity`, `promo_rule_id`),
+  UNIQUE KEY `uk_subscribe_quantity_rule` (`subscribe_id`, `quantity`, `promo_rule_id`),
   KEY `idx_promo_rule_id` (`promo_rule_id`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='规格促销价表';
 
+SET @column_exists = (
+  SELECT COUNT(*)
+  FROM INFORMATION_SCHEMA.COLUMNS
+  WHERE TABLE_SCHEMA = DATABASE()
+    AND TABLE_NAME = 'subscribe_promo'
+    AND COLUMN_NAME = 'quantity'
+);
+
+SET @sql = IF(
+  @column_exists = 0,
+  'ALTER TABLE `subscribe_promo` ADD COLUMN `quantity` BIGINT NOT NULL DEFAULT 1 COMMENT ''购买数量'' AFTER `subscribe_id`',
+  'SELECT ''Column quantity already exists in subscribe_promo table'''
+);
+
+PREPARE stmt FROM @sql;
+EXECUTE stmt;
+DEALLOCATE PREPARE stmt;
+
+SET @sql = IF(
+  @column_exists = 1,
+  'ALTER TABLE `subscribe_promo` MODIFY COLUMN `quantity` BIGINT NOT NULL DEFAULT 1 COMMENT ''购买数量''',
+  'SELECT ''Column quantity does not exist in subscribe_promo table'''
+);
+
+PREPARE stmt FROM @sql;
+EXECUTE stmt;
+DEALLOCATE PREPARE stmt;
+
+SET @index_exists = (
+  SELECT COUNT(*)
+  FROM INFORMATION_SCHEMA.STATISTICS
+  WHERE TABLE_SCHEMA = DATABASE()
+    AND TABLE_NAME = 'subscribe_promo'
+    AND INDEX_NAME = 'uk_subscribe_rule'
+);
+
+SET @sql = IF(
+  @index_exists = 1,
+  'ALTER TABLE `subscribe_promo` DROP INDEX `uk_subscribe_rule`',
+  'SELECT ''Index uk_subscribe_rule does not exist on subscribe_promo table'''
+);
+
+PREPARE stmt FROM @sql;
+EXECUTE stmt;
+DEALLOCATE PREPARE stmt;
+
+SET @index_exists = (
+  SELECT COUNT(*)
+  FROM INFORMATION_SCHEMA.STATISTICS
+  WHERE TABLE_SCHEMA = DATABASE()
+    AND TABLE_NAME = 'subscribe_promo'
+    AND INDEX_NAME = 'uk_subscribe_qty_rule'
+);
+
+SET @sql = IF(
+  @index_exists = 1,
+  'ALTER TABLE `subscribe_promo` DROP INDEX `uk_subscribe_qty_rule`',
+  'SELECT ''Index uk_subscribe_qty_rule does not exist on subscribe_promo table'''
+);
+
+PREPARE stmt FROM @sql;
+EXECUTE stmt;
+DEALLOCATE PREPARE stmt;
+
+SET @index_exists = (
+  SELECT COUNT(*)
+  FROM INFORMATION_SCHEMA.STATISTICS
+  WHERE TABLE_SCHEMA = DATABASE()
+    AND TABLE_NAME = 'subscribe_promo'
+    AND INDEX_NAME = 'uk_subscribe_quantity_rule'
+);
+
+SET @sql = IF(
+  @index_exists = 0,
+  'ALTER TABLE `subscribe_promo` ADD UNIQUE KEY `uk_subscribe_quantity_rule` (`subscribe_id`, `quantity`, `promo_rule_id`)',
+  'SELECT ''Index uk_subscribe_quantity_rule already exists on subscribe_promo table'''
+);
+
+PREPARE stmt FROM @sql;
+EXECUTE stmt;
+DEALLOCATE PREPARE stmt;
+
 CREATE TABLE IF NOT EXISTS `promo_usage` (
   `id` BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
   `user_id` BIGINT UNSIGNED NOT NULL COMMENT '用户 ID',

internal/logic/common/promoEligibility.go

@@ -28,13 +28,13 @@ type promoRuleParams struct {
 	InactiveMonths int `json:"inactive_months"`
 }
 
-func EvaluatePromo(ctx context.Context, svcCtx *svc.ServiceContext, userID int64, subscribeID int64) (*PromoResult, error) {
+func EvaluatePromo(ctx context.Context, svcCtx *svc.ServiceContext, userID int64, subscribeID int64, quantity int64) (*PromoResult, error) {
 	result := &PromoResult{}
-	if svcCtx == nil || svcCtx.PromoModel == nil || svcCtx.DB == nil || userID <= 0 || subscribeID <= 0 {
+	if svcCtx == nil || svcCtx.PromoModel == nil || svcCtx.DB == nil || userID <= 0 || subscribeID <= 0 || quantity <= 0 {
 		return result, nil
 	}
 
-	rules, err := svcCtx.PromoModel.QueryEligibleRules(ctx, subscribeID)
+	rules, err := svcCtx.PromoModel.QueryEligibleRules(ctx, subscribeID, quantity)
 	if err != nil {
 		return nil, errors.Wrapf(xerr.NewErrCode(xerr.DatabaseQueryError), "query promo rules failed: %v", err.Error())
 	}
@@ -151,11 +151,10 @@ func evaluateInactiveUserPromo(
 		Where("user_id = ?", userID).
 		Order(clause.OrderBy{
 			Expression: clause.Expr{
-				SQL:  "CASE WHEN expire_time = ? THEN 0 ELSE 1 END",
-				Vars: []interface{}{permanentSubscribeExpireTime()},
+				SQL:  "CASE WHEN expire_time = ? THEN 0 ELSE 1 END, expire_time DESC",
+				Vars: []interface{}{time.UnixMilli(0)},
 			},
 		}).
-		Order("expire_time DESC").
 		Limit(1).
 		Take(&lastSub).Error
 	if err != nil {
@@ -165,19 +164,16 @@ func evaluateInactiveUserPromo(
 		return false, time.Time{}, errors.Wrapf(xerr.NewErrCode(xerr.DatabaseQueryError), "query promo inactive user subscription failed")
 	}
 
-	return isInactivePromoEligible(lastSub.ExpireTime, now, params.InactiveMonths), ruleExpiresAt, nil
+	return evaluateInactiveUserExpire(lastSub.ExpireTime, params, now), ruleExpiresAt, nil
 }
 
-func isInactivePromoEligible(expireTime time.Time, now time.Time, inactiveMonths int) bool {
-	if expireTime.Equal(permanentSubscribeExpireTime()) {
+func evaluateInactiveUserExpire(lastExpire time.Time, params promoRuleParams, now time.Time) bool {
+	if lastExpire.Equal(time.UnixMilli(0)) {
 		return false
 	}
-	threshold := now.AddDate(0, -inactiveMonths, 0)
-	return expireTime.Before(threshold) || expireTime.Equal(threshold)
-}
 
-func permanentSubscribeExpireTime() time.Time {
-	return time.UnixMilli(0)
+	threshold := now.AddDate(0, -params.InactiveMonths, 0)
+	return lastExpire.Before(threshold) || lastExpire.Equal(threshold)
 }
 
 func promoRuleExpiresAt(rule *promo.RuleWithPrice) time.Time {

internal/logic/common/promoEligibility_test.go

@@ -5,46 +5,41 @@ import (
 	"time"
 )
 
-func TestIsInactivePromoEligible(t *testing.T) {
-	now := time.Date(2026, time.May, 27, 12, 0, 0, 0, time.UTC)
+func TestEvaluateInactiveUserExpire(t *testing.T) {
+	now := time.Date(2026, 5, 27, 8, 0, 0, 0, time.UTC)
+	params := promoRuleParams{InactiveMonths: 3}
 
 	tests := []struct {
 		name       string
-		expireAt time.Time
+		lastExpire time.Time
 		want       bool
 	}{
 		{
-			name:     "expired before inactive threshold is eligible",
-			expireAt: now.AddDate(0, -4, 0),
+			name:       "permanent subscription is not inactive",
+			lastExpire: time.UnixMilli(0),
+			want:       false,
+		},
+		{
+			name:       "active subscription is not inactive",
+			lastExpire: now.Add(time.Hour),
+			want:       false,
+		},
+		{
+			name:       "expire at threshold is inactive",
+			lastExpire: now.AddDate(0, -3, 0),
 			want:       true,
 		},
 		{
-			name:     "expired exactly at inactive threshold is eligible",
-			expireAt: now.AddDate(0, -3, 0),
+			name:       "expire before threshold is inactive",
+			lastExpire: now.AddDate(0, -3, -1),
 			want:       true,
 		},
-		{
-			name:     "recently expired subscription is not eligible",
-			expireAt: now.AddDate(0, -2, 0),
-			want:     false,
-		},
-		{
-			name:     "active future subscription is not eligible",
-			expireAt: now.Add(time.Hour),
-			want:     false,
-		},
-		{
-			name:     "permanent subscription marker is not eligible",
-			expireAt: time.UnixMilli(0),
-			want:     false,
-		},
 	}
 
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			got := isInactivePromoEligible(tt.expireAt, now, 3)
-			if got != tt.want {
-				t.Fatalf("isInactivePromoEligible() = %v, want %v", got, tt.want)
+			if got := evaluateInactiveUserExpire(tt.lastExpire, params, now); got != tt.want {
+				t.Fatalf("evaluateInactiveUserExpire() = %v, want %v", got, tt.want)
 			}
 		})
 	}

internal/logic/public/order/preCreateOrderLogic.go

@@ -47,13 +47,18 @@ func (l *PreCreateOrderLogic) PreCreateOrder(req *types.PurchaseOrderRequest) (r
 		l.Debugf("[PreCreateOrder] Quantity is less than or equal to 0, setting to 1")
 		req.Quantity = 1
 	}
+	entitlement, entErr := commonLogic.ResolveEntitlementUser(l.ctx, l.svcCtx.DB, u.Id)
+	if entErr != nil {
+		return nil, entErr
+	}
 
 	targetSubscribeID := req.SubscribeId
+	orderType := uint8(1)
 	isSingleModeRenewal := false
 	decision, routeErr := commonLogic.ResolvePurchaseRoute(
 		l.ctx,
 		l.svcCtx.Config.Subscribe.SingleModel,
-		u.Id,
+		entitlement.EffectiveUserID,
 		req.SubscribeId,
 		l.svcCtx.UserModel.FindSingleModeAnchorSubscribe,
 	)
@@ -68,15 +73,44 @@ func (l *PreCreateOrderLogic) PreCreateOrder(req *types.PurchaseOrderRequest) (r
 		targetSubscribeID = decision.ResolvedSubscribeID
 		isSingleModeRenewal = decision.Route == commonLogic.PurchaseRoutePurchaseToRenewal
 		if isSingleModeRenewal && decision.Anchor != nil {
+			orderType = 2
 			l.Infow("[PreCreateOrder] single mode purchase routed to renewal preview",
 				logger.Field("mode", "single"),
 				logger.Field("route", "purchase_to_renewal"),
 				logger.Field("anchor_user_subscribe_id", decision.Anchor.Id),
 				logger.Field("user_id", u.Id),
+				logger.Field("effective_user_id", entitlement.EffectiveUserID),
 			)
 		}
 	}
 
+	// Keep promo eligibility preview aligned with Purchase: an existing paid subscription
+	// routes the request to renewal semantics, where first-purchase promos are disabled.
+	if !l.svcCtx.Config.Subscribe.SingleModel && orderType == 1 {
+		var existSub user.Subscribe
+		if e := l.svcCtx.DB.WithContext(l.ctx).
+			Model(&user.Subscribe{}).
+			Where("user_id = ? AND token != '' AND (order_id > 0 OR token LIKE 'iap:%')", entitlement.EffectiveUserID).
+			Order("expire_time DESC").
+			Order("updated_at DESC").
+			Order("id DESC").
+			First(&existSub).Error; e == nil && existSub.Id > 0 && existSub.Token != "" {
+			orderType = 2
+			l.Infow("[PreCreateOrder] purchase preview routed to renewal because an existing subscription was found",
+				logger.Field("route_mode", "global_single_subscription"),
+				logger.Field("route", "purchase_to_existing_subscription"),
+				logger.Field("existing_subscribe_id", existSub.Id),
+				logger.Field("existing_status", existSub.Status),
+				logger.Field("user_id", u.Id),
+				logger.Field("effective_user_id", entitlement.EffectiveUserID),
+				logger.Field("resolved_subscribe_id", targetSubscribeID),
+			)
+		} else if e != nil && !errors.Is(e, gorm.ErrRecordNotFound) {
+			l.Errorw("[PreCreateOrder] Database query error", logger.Field("error", e.Error()), logger.Field("user_id", u.Id))
+			return nil, errors.Wrapf(xerr.NewErrCode(xerr.DatabaseQueryError), "find existing subscription error: %v", e.Error())
+		}
+	}
+
 	// find subscribe plan
 	sub, err := l.svcCtx.SubscribeModel.FindOne(l.ctx, targetSubscribeID)
 	if err != nil {
@@ -86,7 +120,7 @@ func (l *PreCreateOrderLogic) PreCreateOrder(req *types.PurchaseOrderRequest) (r
 
 	// check subscribe plan quota limit for new purchase flow only
 	if !isSingleModeRenewal && sub.Quota > 0 {
-		userSub, err := l.svcCtx.UserModel.QueryUserSubscribe(l.ctx, u.Id)
+		userSub, err := l.svcCtx.UserModel.QueryUserSubscribe(l.ctx, entitlement.EffectiveUserID)
 		if err != nil {
 			l.Errorw("[PreCreateOrder] Database query error", logger.Field("error", err.Error()), logger.Field("user_id", u.Id))
 			return nil, errors.Wrapf(xerr.NewErrCode(xerr.DatabaseQueryError), "find user subscription error: %v", err.Error())
@@ -102,7 +136,7 @@ func (l *PreCreateOrderLogic) PreCreateOrder(req *types.PurchaseOrderRequest) (r
 		}
 	}
 
-	newUserDiscount, err := resolveNewUserDiscountEligibility(l.ctx, l.svcCtx.DB, u.Id, targetSubscribeID, req.Quantity, sub.Discount)
+	newUserDiscount, err := resolveNewUserDiscountEligibility(l.ctx, l.svcCtx.DB, entitlement.EffectiveUserID, targetSubscribeID, req.Quantity, sub.Discount)
 	if err != nil {
 		l.Errorw("[PreCreateOrder] Database query error resolving new user eligibility",
 			logger.Field("error", err.Error()),
@@ -117,13 +151,13 @@ func (l *PreCreateOrderLogic) PreCreateOrder(req *types.PurchaseOrderRequest) (r
 	priceResult, err := calculatePurchasePrice(
 		l.ctx,
 		l.svcCtx,
-		u.Id,
+		entitlement.EffectiveUserID,
 		targetSubscribeID,
 		sub.UnitPrice,
 		req.Quantity,
 		newUserDiscount.Discounts,
 		newUserDiscount.EligibleForDiscount,
-		!isSingleModeRenewal,
+		orderType == 1,
 	)
 	if err != nil {
 		l.Errorw("[PreCreateOrder] Promo price calculation error",

internal/logic/public/order/promoPricing.go

@@ -36,7 +36,7 @@ func calculatePurchasePrice(
 	}
 
 	if allowPromo {
-		promoResult, err := commonLogic.EvaluatePromo(ctx, svcCtx, userID, subscribeID)
+		promoResult, err := commonLogic.EvaluatePromo(ctx, svcCtx, userID, subscribeID, quantity)
 		if err != nil {
 			return nil, err
 		}

internal/logic/public/order/promoPricing_test.go

@@ -12,20 +12,27 @@ import (
 
 type fakePromoModel struct {
 	rules            []*promo.RuleWithPrice
+	lastSubscribeID  int64
+	lastQuantity     int64
+	requireQuantity  int64
+	quantityMismatch []*promo.RuleWithPrice
 }
 
-func (m fakePromoModel) QueryEligibleRules(context.Context, int64) ([]*promo.RuleWithPrice, error) {
+func (m *fakePromoModel) QueryEligibleRules(_ context.Context, subscribeID int64, quantity int64) ([]*promo.RuleWithPrice, error) {
+	m.lastSubscribeID = subscribeID
+	m.lastQuantity = quantity
+	if m.requireQuantity > 0 && quantity != m.requireQuantity {
+		return m.quantityMismatch, nil
+	}
 	return m.rules, nil
 }
 
-func (m fakePromoModel) InsertUsage(context.Context, *promo.Usage, ...*gorm.DB) error {
+func (m *fakePromoModel) InsertUsage(context.Context, *promo.Usage, ...*gorm.DB) error {
 	return nil
 }
 
 func TestCalculatePurchasePricePromoSkipsPercentDiscount(t *testing.T) {
-	svcCtx := &svc.ServiceContext{
-		DB: &gorm.DB{},
-		PromoModel: fakePromoModel{rules: []*promo.RuleWithPrice{
+	model := &fakePromoModel{rules: []*promo.RuleWithPrice{
 		{
 			Rule: promo.Rule{
 				Id:      9,
@@ -35,7 +42,10 @@ func TestCalculatePurchasePricePromoSkipsPercentDiscount(t *testing.T) {
 			},
 			PromoPrice: 600,
 		},
-		}},
+	}}
+	svcCtx := &svc.ServiceContext{
+		DB:         &gorm.DB{},
+		PromoModel: model,
 	}
 
 	result, err := calculatePurchasePrice(
@@ -68,12 +78,13 @@ func TestCalculatePurchasePricePromoSkipsPercentDiscount(t *testing.T) {
 	if result.PromoDiscount != 1200 {
 		t.Fatalf("PromoDiscount = %d, want 1200", result.PromoDiscount)
 	}
+	if model.lastQuantity != 3 {
+		t.Fatalf("promo query quantity = %d, want 3", model.lastQuantity)
+	}
 }
 
 func TestCalculatePurchasePriceIgnoresInvalidPromoPrice(t *testing.T) {
-	svcCtx := &svc.ServiceContext{
-		DB: &gorm.DB{},
-		PromoModel: fakePromoModel{rules: []*promo.RuleWithPrice{
+	model := &fakePromoModel{rules: []*promo.RuleWithPrice{
 		{
 			Rule: promo.Rule{
 				Id:      10,
@@ -83,7 +94,10 @@ func TestCalculatePurchasePriceIgnoresInvalidPromoPrice(t *testing.T) {
 			},
 			PromoPrice: 1000,
 		},
-		}},
+	}}
+	svcCtx := &svc.ServiceContext{
+		DB:         &gorm.DB{},
+		PromoModel: model,
 	}
 
 	result, err := calculatePurchasePrice(
@@ -111,3 +125,52 @@ func TestCalculatePurchasePriceIgnoresInvalidPromoPrice(t *testing.T) {
 		t.Fatalf("promo fields = (%d, %d), want (0, 0)", result.PromoRuleId, result.PromoDiscount)
 	}
 }
+
+func TestCalculatePurchasePricePassesQuantityToPromoEvaluation(t *testing.T) {
+	promoModel := &fakePromoModel{
+		requireQuantity: 6,
+		rules: []*promo.RuleWithPrice{
+			{
+				Rule: promo.Rule{
+					Id:      11,
+					Name:    "quantity campaign",
+					Type:    promo.RuleTypeCampaign,
+					Enabled: true,
+				},
+				PromoPrice: 500,
+			},
+		},
+	}
+	svcCtx := &svc.ServiceContext{
+		DB:         &gorm.DB{},
+		PromoModel: promoModel,
+	}
+
+	result, err := calculatePurchasePrice(
+		context.Background(),
+		svcCtx,
+		1,
+		2,
+		1000,
+		6,
+		[]types.SubscribeDiscount{{Quantity: 6, Discount: 80}},
+		true,
+		true,
+	)
+	if err != nil {
+		t.Fatalf("calculatePurchasePrice returned error: %v", err)
+	}
+
+	if promoModel.lastSubscribeID != 2 {
+		t.Fatalf("lastSubscribeID = %d, want 2", promoModel.lastSubscribeID)
+	}
+	if promoModel.lastQuantity != 6 {
+		t.Fatalf("lastQuantity = %d, want 6", promoModel.lastQuantity)
+	}
+	if result.PayableBase != 3000 {
+		t.Fatalf("PayableBase = %d, want 3000", result.PayableBase)
+	}
+	if result.PromoRuleId != 11 {
+		t.Fatalf("PromoRuleId = %d, want 11", result.PromoRuleId)
+	}
+}

internal/logic/public/subscribe/promo.go

@@ -15,6 +15,7 @@ import (
 	"github.com/perfect-panel/server/pkg/xerr"
 	"github.com/pkg/errors"
 	"gorm.io/gorm"
+	"gorm.io/gorm/clause"
 )
 
 const (
@@ -25,6 +26,7 @@ const (
 
 type subscribePromoCandidate struct {
 	SubscribeId int64      `gorm:"column:subscribe_id"`
+	Quantity    int64      `gorm:"column:quantity"`
 	RuleName    string     `gorm:"column:rule_name"`
 	RuleType    string     `gorm:"column:rule_type"`
 	PromoPrice  int64      `gorm:"column:promo_price"`
@@ -38,8 +40,8 @@ type promoRuleParams struct {
 	InactiveMonths int   `json:"inactive_months"`
 }
 
-func loadSubscribePromoMap(ctx context.Context, svcCtx *svc.ServiceContext, subscribeIDs []int64) (map[int64]*types.SubscribePromo, error) {
-	result := make(map[int64]*types.SubscribePromo)
+func loadSubscribePromoMap(ctx context.Context, svcCtx *svc.ServiceContext, subscribeIDs []int64) (map[int64]map[int64]*types.SubscribePromo, error) {
+	result := make(map[int64]map[int64]*types.SubscribePromo)
 	if len(subscribeIDs) == 0 || svcCtx == nil || svcCtx.DB == nil {
 		return result, nil
 	}
@@ -56,7 +58,13 @@ func loadSubscribePromoMap(ctx context.Context, svcCtx *svc.ServiceContext, subs
 	evaluator := promoEligibilityEvaluator{ctx: ctx, db: svcCtx.DB, userInfo: userInfo}
 	now := time.Now()
 	for _, candidate := range candidates {
-		if _, exists := result[candidate.SubscribeId]; exists {
+		if candidate.Quantity <= 0 {
+			continue
+		}
+		if result[candidate.SubscribeId] == nil {
+			result[candidate.SubscribeId] = make(map[int64]*types.SubscribePromo)
+		}
+		if _, exists := result[candidate.SubscribeId][candidate.Quantity]; exists {
 			continue
 		}
 		if !candidate.isActive(now) {
@@ -69,7 +77,7 @@ func loadSubscribePromoMap(ctx context.Context, svcCtx *svc.ServiceContext, subs
 		if !ok {
 			continue
 		}
-		result[candidate.SubscribeId] = &types.SubscribePromo{
+		result[candidate.SubscribeId][candidate.Quantity] = &types.SubscribePromo{
 			RuleName:   candidate.RuleName,
 			RuleType:   candidate.RuleType,
 			PromoPrice: candidate.PromoPrice,
@@ -82,18 +90,7 @@ func loadSubscribePromoMap(ctx context.Context, svcCtx *svc.ServiceContext, subs
 
 func querySubscribePromoCandidates(ctx context.Context, svcCtx *svc.ServiceContext, subscribeIDs []int64, loggedIn bool) ([]subscribePromoCandidate, error) {
 	var candidates []subscribePromoCandidate
-	query := svcCtx.DB.WithContext(ctx).
-		Table("subscribe_promo AS sp").
-		Select("sp.subscribe_id, sp.promo_price, pr.name AS rule_name, pr.type AS rule_type, pr.params, pr.start_time, pr.end_time").
-		Joins("JOIN promo_rule AS pr ON pr.id = sp.promo_rule_id AND pr.deleted_at IS NULL").
-		Where("sp.subscribe_id IN ? AND sp.promo_price > 0 AND pr.enabled = ?", subscribeIDs, true)
-	if !loggedIn {
-		query = query.Where("pr.type = ?", promoRuleTypeCampaign)
-	}
-	err := query.
-		Order("sp.subscribe_id ASC").
-		Order("pr.priority DESC").
-		Order("pr.id ASC").
+	err := subscribePromoCandidatesQuery(ctx, svcCtx.DB, subscribeIDs, loggedIn).
 		Scan(&candidates).Error
 	if err != nil {
 		return nil, errors.Wrapf(xerr.NewErrCode(xerr.DatabaseQueryError), "query subscribe promo candidates failed: %v", err)
@@ -101,6 +98,22 @@ func querySubscribePromoCandidates(ctx context.Context, svcCtx *svc.ServiceConte
 	return candidates, nil
 }
 
+func subscribePromoCandidatesQuery(ctx context.Context, db *gorm.DB, subscribeIDs []int64, loggedIn bool) *gorm.DB {
+	query := db.WithContext(ctx).
+		Table("subscribe_promo AS sp").
+		Select("sp.subscribe_id, sp.quantity, sp.promo_price, pr.name AS rule_name, pr.type AS rule_type, pr.params, pr.start_time, pr.end_time").
+		Joins("JOIN promo_rule AS pr ON pr.id = sp.promo_rule_id AND pr.deleted_at IS NULL").
+		Where("sp.subscribe_id IN ? AND sp.promo_price > 0 AND pr.enabled = ?", subscribeIDs, true)
+	if !loggedIn {
+		query = query.Where("pr.type = ?", promoRuleTypeCampaign)
+	}
+	return query.
+		Order("sp.subscribe_id ASC").
+		Order("sp.quantity ASC").
+		Order("pr.priority DESC").
+		Order("pr.id ASC")
+}
+
 func (c subscribePromoCandidate) isActive(now time.Time) bool {
 	if c.PromoPrice <= 0 {
 		return false
@@ -171,11 +184,7 @@ func (e *promoEligibilityEvaluator) lastSubscribeExpireAt() (time.Time, error) {
 		return *e.lastExpire, nil
 	}
 	var item user.Subscribe
-	err := e.db.WithContext(e.ctx).
-		Model(&user.Subscribe{}).
-		Where("user_id = ?", e.userInfo.Id).
-		Where("expire_time != ?", time.UnixMilli(0)).
-		Order("expire_time DESC").
+	err := e.lastSubscribeExpireQuery().
 		Limit(1).
 		Take(&item).Error
 	if err != nil {
@@ -190,6 +199,18 @@ func (e *promoEligibilityEvaluator) lastSubscribeExpireAt() (time.Time, error) {
 	return item.ExpireTime, nil
 }
 
+func (e *promoEligibilityEvaluator) lastSubscribeExpireQuery() *gorm.DB {
+	return e.db.WithContext(e.ctx).
+		Model(&user.Subscribe{}).
+		Where("user_id = ?", e.userInfo.Id).
+		Order(clause.OrderBy{
+			Expression: clause.Expr{
+				SQL:  "CASE WHEN expire_time = ? THEN 0 ELSE 1 END, expire_time DESC",
+				Vars: []interface{}{time.UnixMilli(0)},
+			},
+		})
+}
+
 func (c subscribePromoCandidate) expiresAt() time.Time {
 	if c.EndTime == nil {
 		return time.Time{}

internal/logic/public/subscribe/promo_test.go

@@ -1,10 +1,15 @@
 package subscribe
 
 import (
+	"context"
+	"strings"
 	"testing"
 	"time"
 
 	"github.com/perfect-panel/server/internal/model/user"
+	"github.com/perfect-panel/server/internal/types"
+	"gorm.io/driver/mysql"
+	"gorm.io/gorm"
 )
 
 func TestPromoEligibilityEvaluatorMatch(t *testing.T) {
@@ -73,3 +78,83 @@ func TestSubscribePromoCandidateActiveWindow(t *testing.T) {
 		t.Fatal("candidate after end time should not be active")
 	}
 }
+
+func TestLastSubscribeExpireAtPrioritizesPermanentSubscription(t *testing.T) {
+	db, err := gorm.Open(mysql.New(mysql.Config{
+		DSN:                       "gorm:gorm@tcp(localhost:9910)/gorm?charset=utf8&parseTime=True&loc=Local",
+		SkipInitializeWithVersion: true,
+	}), &gorm.Config{DryRun: true, DisableAutomaticPing: true})
+	if err != nil {
+		t.Fatalf("open dry-run db: %v", err)
+	}
+
+	evaluator := &promoEligibilityEvaluator{
+		db:       db,
+		userInfo: &user.User{Id: 7},
+	}
+	var item user.Subscribe
+	tx := evaluator.lastSubscribeExpireQuery().Limit(1).Take(&item)
+
+	sql := tx.Statement.SQL.String()
+	if !strings.Contains(sql, "CASE WHEN expire_time = ? THEN 0 ELSE 1 END") {
+		t.Fatalf("SQL missing permanent subscription priority order: %s", sql)
+	}
+	if strings.Contains(sql, "expire_time !=") {
+		t.Fatalf("SQL should not filter out permanent subscriptions: %s", sql)
+	}
+	if len(tx.Statement.Vars) < 2 {
+		t.Fatalf("SQL vars length = %d, want at least 2; vars=%v", len(tx.Statement.Vars), tx.Statement.Vars)
+	}
+	if got, want := tx.Statement.Vars[1], time.UnixMilli(0); got != want {
+		t.Fatalf("permanent subscription order var = %v, want %v; vars=%v", got, want, tx.Statement.Vars)
+	}
+}
+
+func TestQuerySubscribePromoCandidatesIncludesQuantity(t *testing.T) {
+	db, err := gorm.Open(mysql.New(mysql.Config{
+		DSN:                       "gorm:gorm@tcp(localhost:9910)/gorm?charset=utf8&parseTime=True&loc=Local",
+		SkipInitializeWithVersion: true,
+	}), &gorm.Config{DryRun: true, DisableAutomaticPing: true})
+	if err != nil {
+		t.Fatalf("open dry-run db: %v", err)
+	}
+
+	var candidates []subscribePromoCandidate
+	tx := subscribePromoCandidatesQuery(context.Background(), db, []int64{11, 12}, true).Scan(&candidates)
+	stmt := tx.Statement
+	sql := stmt.SQL.String()
+	if !strings.Contains(sql, "sp.subscribe_id, sp.quantity, sp.promo_price") {
+		t.Fatalf("SQL missing quantity select: %s", sql)
+	}
+	if !strings.Contains(sql, "ORDER BY sp.subscribe_id ASC,sp.quantity ASC,pr.priority DESC,pr.id ASC") {
+		t.Fatalf("SQL missing quantity order: %s", sql)
+	}
+}
+
+func TestApplySubscribeDiscountPromosMatchesQuantity(t *testing.T) {
+	subscribe := types.Subscribe{Discount: []types.SubscribeDiscount{
+		{Quantity: 1},
+		{Quantity: 12},
+	}}
+	promos := map[int64]*types.SubscribePromo{
+		3:  {RuleName: "季度优惠", PromoPrice: 2900},
+		12: {RuleName: "年度优惠", PromoPrice: 9900},
+	}
+
+	applySubscribeDiscountPromos(&subscribe, promos)
+	if subscribe.Discount[0].Promo != nil {
+		t.Fatalf("quantity 1 promo should be nil, got %+v", subscribe.Discount[0].Promo)
+	}
+	if subscribe.Discount[1].Promo == nil {
+		t.Fatal("quantity 12 promo should match")
+	}
+	if got, want := subscribe.Discount[1].Promo.RuleName, "年度优惠"; got != want {
+		t.Fatalf("promo rule name = %q, want %q", got, want)
+	}
+
+	subscribe = types.Subscribe{Discount: []types.SubscribeDiscount{{Quantity: 6}}}
+	applySubscribeDiscountPromos(&subscribe, promos)
+	if subscribe.Discount[0].Promo != nil {
+		t.Fatalf("promo should be nil when quantity does not match, got %+v", subscribe.Discount[0].Promo)
+	}
+}

internal/logic/public/subscribe/querySubscribeListLogic.go

@@ -56,11 +56,19 @@ func (l *QuerySubscribeListLogic) QuerySubscribeList(req *types.QuerySubscribeLi
 			var discount []types.SubscribeDiscount
 			_ = json.Unmarshal([]byte(item.Discount), &discount)
 			sub.Discount = discount
-			list[i] = sub
 		}
 		list[i] = sub
 	}
 
+	promos, err := loadSubscribePromoMap(l.ctx, l.svcCtx, subscribeIDs)
+	if err != nil {
+		l.Errorw("[QuerySubscribeListLogic] Query Promo Error", logger.Field("error", err.Error()))
+		return nil, err
+	}
+	for i := range list {
+		applySubscribeDiscountPromos(&list[i], promos[list[i].Id])
+	}
+
 	// 老版本客户端（无 X-App-Id）去掉每个套餐 discount 的最后一个
 	hasAppId, _ := l.ctx.Value(constant.CtxKeyHasAppId).(bool)
 	if !hasAppId {
@@ -71,16 +79,13 @@ func (l *QuerySubscribeListLogic) QuerySubscribeList(req *types.QuerySubscribeLi
 		}
 	}
 
-	promos, err := loadSubscribePromoMap(l.ctx, l.svcCtx, subscribeIDs)
-	if err != nil {
-		l.Errorw("[QuerySubscribeListLogic] Query Promo Error", logger.Field("error", err.Error()))
-		return nil, err
-	}
-	for i := range list {
-		list[i].Promo = promos[list[i].Id]
-	}
-
 	resp.List = list
 	resp.Total = int64(len(list))
 	return
 }
+
+func applySubscribeDiscountPromos(subscribe *types.Subscribe, promoByQuantity map[int64]*types.SubscribePromo) {
+	for i := range subscribe.Discount {
+		subscribe.Discount[i].Promo = promoByQuantity[subscribe.Discount[i].Quantity]
+	}
+}

internal/model/promo/model.go

@@ -13,7 +13,7 @@ type RuleWithPrice struct {
 }
 
 type Model interface {
-	QueryEligibleRules(ctx context.Context, subscribeId int64) ([]*RuleWithPrice, error)
+	QueryEligibleRules(ctx context.Context, subscribeId int64, quantity int64) ([]*RuleWithPrice, error)
 	InsertUsage(ctx context.Context, data *Usage, tx ...*gorm.DB) error
 }
 
@@ -25,18 +25,22 @@ func NewModel(db *gorm.DB, _ *redis.Client) Model {
 	return &defaultPromoModel{db: db}
 }
 
-func (m *defaultPromoModel) QueryEligibleRules(ctx context.Context, subscribeId int64) ([]*RuleWithPrice, error) {
+func (m *defaultPromoModel) QueryEligibleRules(ctx context.Context, subscribeId int64, quantity int64) ([]*RuleWithPrice, error) {
 	var list []*RuleWithPrice
-	err := m.db.WithContext(ctx).
+	err := m.eligibleRulesQuery(ctx, subscribeId, quantity).
+		Find(&list).Error
+	return list, err
+}
+
+func (m *defaultPromoModel) eligibleRulesQuery(ctx context.Context, subscribeId int64, quantity int64) *gorm.DB {
+	return m.db.WithContext(ctx).
 		Table("promo_rule AS pr").
 		Select("pr.*, sp.promo_price").
-		Joins("JOIN subscribe_promo AS sp ON sp.promo_rule_id = pr.id").
+		Joins("JOIN subscribe_promo AS sp ON sp.promo_rule_id = pr.id AND sp.quantity = ?", quantity).
 		Where("sp.subscribe_id = ? AND sp.promo_price > 0 AND pr.enabled = ?", subscribeId, true).
 		Where("pr.deleted_at IS NULL").
 		Order("pr.priority DESC").
-		Order("pr.id ASC").
-		Find(&list).Error
-	return list, err
+		Order("pr.id ASC")
 }
 
 func (m *defaultPromoModel) InsertUsage(ctx context.Context, data *Usage, tx ...*gorm.DB) error {

internal/model/promo/model_test.go

@@ -0,0 +1,39 @@
+package promo
+
+import (
+	"context"
+	"strings"
+	"testing"
+
+	"gorm.io/driver/mysql"
+	"gorm.io/gorm"
+)
+
+func TestQueryEligibleRulesFiltersByQuantity(t *testing.T) {
+	db, err := gorm.Open(mysql.New(mysql.Config{
+		DSN:                       "gorm:gorm@tcp(localhost:9910)/gorm?charset=utf8&parseTime=True&loc=Local",
+		SkipInitializeWithVersion: true,
+	}), &gorm.Config{DryRun: true, DisableAutomaticPing: true})
+	if err != nil {
+		t.Fatalf("open dry-run db: %v", err)
+	}
+
+	model := &defaultPromoModel{db: db}
+	var list []*RuleWithPrice
+	tx := model.eligibleRulesQuery(context.Background(), 11, 3).Find(&list)
+	stmt := tx.Statement
+	sql := stmt.SQL.String()
+	if !strings.Contains(sql, "JOIN subscribe_promo AS sp ON sp.promo_rule_id = pr.id AND sp.quantity = ?") {
+		t.Fatalf("SQL missing quantity join condition: %s", sql)
+	}
+
+	if len(stmt.Vars) < 2 {
+		t.Fatalf("SQL vars length = %d, want at least 2; vars=%v", len(stmt.Vars), stmt.Vars)
+	}
+	if got, want := stmt.Vars[0], int64(3); got != want {
+		t.Fatalf("first SQL var = %v, want quantity %d; vars=%v", got, want, stmt.Vars)
+	}
+	if got, want := stmt.Vars[1], int64(11); got != want {
+		t.Fatalf("second SQL var = %v, want subscribe_id %d; vars=%v", got, want, stmt.Vars)
+	}
+}

internal/model/promo/promo.go

@@ -33,6 +33,7 @@ func (Rule) TableName() string {
 type SubscribePromo struct {
 	Id          int64     `gorm:"primaryKey"`
 	SubscribeId int64     `gorm:"type:bigint unsigned;not null;comment:Subscribe ID"`
+	Quantity    int64     `gorm:"type:bigint;not null;default:1;comment:Quantity"`
 	PromoRuleId int64     `gorm:"type:bigint unsigned;not null;comment:Promo Rule ID"`
 	PromoPrice  int64     `gorm:"type:bigint;not null;default:0;comment:Promo Price"`
 	CreatedAt   time.Time `gorm:"<-:create;comment:Create Time"`

internal/types/types.go

@@ -2789,7 +2789,6 @@ type Subscribe struct {
 	UnitPrice         int64               `json:"unit_price"`
 	UnitTime          string              `json:"unit_time"`
 	Discount          []SubscribeDiscount `json:"discount"`
-	Promo             *SubscribePromo     `json:"promo"`
 	NodeCount         int64               `json:"node_count"`
 	Replacement       int64               `json:"replacement"`
 	Inventory         int64               `json:"inventory"`
@@ -2854,6 +2853,7 @@ type SubscribeDiscount struct {
 	Discount    float64         `json:"discount"`
 	NewUserOnly bool            `json:"new_user_only"`
 	MapApple    string          `json:"map_apple"`
+	Promo       *SubscribePromo `json:"promo"`
 }
 
 type SubscribeGroup struct {

node.json

@@ -3680,6 +3680,9 @@
         "discount": {
           "type": "number",
           "format": "double"
+        },
+        "promo": {
+          "$ref": "#/definitions/SubscribePromo"
         }
       },
       "title": "SubscribeDiscount",

queue/logic/order/activateOrderLogic.go

@@ -149,7 +149,20 @@ func (l *ActivateOrderLogic) ProcessTask(ctx context.Context, task *asynq.Task)
 		return err
 	}
 
-	l.recordPromoUsage(ctx, orderInfo)
+	if err = l.recordPromoUsage(ctx, orderInfo); err != nil {
+		if releaseErr := l.releaseClaim(ctx, orderInfo.OrderNo); releaseErr != nil {
+			logger.WithContext(ctx).Error("[ActivateOrderLogic] releaseClaim also failed, stuck recovery will handle",
+				logger.Field("order_no", orderInfo.OrderNo),
+				logger.Field("release_error", releaseErr.Error()),
+			)
+		}
+		logger.WithContext(ctx).Error("[ActivateOrderLogic] 促销使用记录写入失败，将重试",
+			logger.Field("order_no", orderInfo.OrderNo),
+			logger.Field("promo_rule_id", orderInfo.PromoRuleId),
+			logger.Field("error", err.Error()),
+		)
+		return err
+	}
 	l.finalizeCouponAndOrder(ctx, orderInfo)
 
 	commonLogic.SubscriptionTraceInfo(logger.WithContext(ctx), commonLogic.SubscriptionTraceFlowOrder, "activation_finished",
@@ -159,9 +172,9 @@ func (l *ActivateOrderLogic) ProcessTask(ctx context.Context, task *asynq.Task)
 	return nil
 }
 
-func (l *ActivateOrderLogic) recordPromoUsage(ctx context.Context, orderInfo *order.Order) {
+func (l *ActivateOrderLogic) recordPromoUsage(ctx context.Context, orderInfo *order.Order) error {
 	if orderInfo == nil || orderInfo.PromoRuleId <= 0 || orderInfo.Quantity <= 0 || orderInfo.SubscribeId <= 0 || orderInfo.OrderNo == "" {
-		return
+		return nil
 	}
 
 	promoPrice := int64(0)
@@ -169,10 +182,10 @@ func (l *ActivateOrderLogic) recordPromoUsage(ctx context.Context, orderInfo *or
 		promoPrice = (orderInfo.Price - orderInfo.PromoDiscount) / orderInfo.Quantity
 	}
 	if promoPrice <= 0 {
-		return
+		return nil
 	}
 
-	err := l.svc.DB.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
+	return l.svc.DB.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
 		var count int64
 		if e := tx.Model(&promo.Usage{}).Where("order_no = ?", orderInfo.OrderNo).Count(&count).Error; e != nil {
 			return e
@@ -188,13 +201,6 @@ func (l *ActivateOrderLogic) recordPromoUsage(ctx context.Context, orderInfo *or
 			PromoPrice:  promoPrice,
 		}, tx)
 	})
-	if err != nil {
-		logger.WithContext(ctx).Error("Insert promo usage failed",
-			logger.Field("error", err.Error()),
-			logger.Field("order_no", orderInfo.OrderNo),
-			logger.Field("promo_rule_id", orderInfo.PromoRuleId),
-		)
-	}
 }
 
 // parsePayload unMarshals the task payload into a structured format

user.json

@@ -5900,6 +5900,9 @@
         "discount": {
           "type": "number",
           "format": "double"
+        },
+        "promo": {
+          "$ref": "#/definitions/SubscribePromo"
         }
       },
       "title": "SubscribeDiscount",