feat(benefits): 增加权益中心

backend/internal/modules/pointsmall/dto.go

@@ -17,12 +17,23 @@ var (
 )
 
 type SummaryDTO struct {
-	AvailablePoints     int64  `json:"available_points"`
-	LifetimePoints      int64  `json:"lifetime_points"`
-	LevelCode           string `json:"level_code"`
-	LevelName           string `json:"level_name"`
-	PointsPerYuan       int64  `json:"points_per_yuan"`
-	PointsMultiplierBps int    `json:"points_multiplier_bps"`
+	AvailablePoints     int64            `json:"available_points"`
+	LifetimePoints      int64            `json:"lifetime_points"`
+	LevelCode           string           `json:"level_code"`
+	LevelName           string           `json:"level_name"`
+	PointsPerYuan       int64            `json:"points_per_yuan"`
+	PointsMultiplierBps int              `json:"points_multiplier_bps"`
+	GrowthEnabled       bool             `json:"growth_enabled"`
+	Levels              []GrowthLevelDTO `json:"levels"`
+}
+
+type GrowthLevelDTO struct {
+	Code                 string `json:"code"`
+	Name                 string `json:"name"`
+	MinPoints            int64  `json:"min_points"`
+	PointsMultiplierBps  int    `json:"points_multiplier_bps"`
+	DiscountBps          int    `json:"discount_bps"`
+	DepositFreeQuotaCent int64  `json:"deposit_free_quota_cent"`
 }
 
 type ProductDTO struct {

backend/internal/modules/pointsmall/repository.go

@@ -35,6 +35,17 @@ func (r *Repository) Summary(ctx context.Context, userID uint64) (*SummaryDTO, e
 		return nil, err
 	}
 	level := rentergrowth.LevelForPoints(cfg, user.RenterGrowthPoints)
+	levels := make([]GrowthLevelDTO, 0, len(cfg.Levels))
+	for _, item := range cfg.Levels {
+		levels = append(levels, GrowthLevelDTO{
+			Code:                 item.Code,
+			Name:                 item.Name,
+			MinPoints:            item.MinPoints,
+			PointsMultiplierBps:  item.PointsMultiplierBps,
+			DiscountBps:          item.DiscountBps,
+			DepositFreeQuotaCent: item.DepositFreeQuotaCent,
+		})
+	}
 	return &SummaryDTO{
 		AvailablePoints:     user.PointsAvailable,
 		LifetimePoints:      user.RenterGrowthPoints,
@@ -42,6 +53,8 @@ func (r *Repository) Summary(ctx context.Context, userID uint64) (*SummaryDTO, e
 		LevelName:           level.Name,
 		PointsPerYuan:       cfg.PointsPerYuan,
 		PointsMultiplierBps: level.PointsMultiplierBps,
+		GrowthEnabled:       cfg.Enabled,
+		Levels:              levels,
 	}, nil
 }
 

backend/internal/modules/pointsmall/repository_test.go

@@ -76,3 +76,33 @@ func TestRedeemDeductsAvailablePointsAndStock(t *testing.T) {
 		t.Fatalf("redemption status = %s, want completed", completed.Status)
 	}
 }
+
+func TestSummaryIncludesGrowthLevelRules(t *testing.T) {
+	db := database.NewTestDB()
+	user := model.User{
+		Phone:              "13900009602",
+		RenterGrowthPoints: 1000,
+		PointsAvailable:    432,
+	}
+	if err := db.Create(&user).Error; err != nil {
+		t.Fatalf("create user failed: %v", err)
+	}
+
+	summary, err := NewRepository(db).Summary(t.Context(), user.ID)
+	if err != nil {
+		t.Fatalf("summary failed: %v", err)
+	}
+	if !summary.GrowthEnabled || len(summary.Levels) != 4 {
+		t.Fatalf("growth config = enabled %v levels %d", summary.GrowthEnabled, len(summary.Levels))
+	}
+	if summary.LevelCode != "diamond" || summary.PointsMultiplierBps != 15_000 {
+		t.Fatalf(
+			"current level = %s multiplier %d, want diamond/15000",
+			summary.LevelCode,
+			summary.PointsMultiplierBps,
+		)
+	}
+	if summary.Levels[2].DiscountBps != 9800 || summary.Levels[2].DepositFreeQuotaCent != 100_000 {
+		t.Fatalf("diamond rules = %+v", summary.Levels[2])
+	}
+}