feat(distribution): 独立分销前台商城多租户体系、货源与订单数据严格隔离

backend/internal/modules/listing/dto.go

@@ -175,9 +175,10 @@ type PublicListQuery struct {
 	MaxFireLevel   *float64
 	MinDailyLoss   *float64
 	MaxDailyLoss   *float64
-	MinSecretKD    *float64
-	MaxSecretKD    *float64
-	ResourceRanges map[string]NumberRange
+	MinSecretKD          *float64
+	MaxSecretKD          *float64
+	ResourceRanges       map[string]NumberRange
+	DistributionSiteCode string
 }
 
 type NumberRange struct {

backend/internal/modules/listing/handler_parse.go

@@ -116,9 +116,10 @@ func parsePublicListQuery(c *gin.Context) PublicListQuery {
 		MaxFireLevel:   parseOptionalFloat(c.Query("max_fire_level")),
 		MinDailyLoss:   parseOptionalFloat(c.Query("min_daily_loss")),
 		MaxDailyLoss:   parseOptionalFloat(c.Query("max_daily_loss")),
-		MinSecretKD:    parseOptionalFloat(c.Query("min_secret_kd")),
-		MaxSecretKD:    parseOptionalFloat(c.Query("max_secret_kd")),
-		ResourceRanges: parseResourceRanges(c),
+		MinSecretKD:          parseOptionalFloat(c.Query("min_secret_kd")),
+		MaxSecretKD:          parseOptionalFloat(c.Query("max_secret_kd")),
+		ResourceRanges:       parseResourceRanges(c),
+		DistributionSiteCode: strings.TrimSpace(firstNonEmpty(c.Query("distribution_site_code"), c.Query("site_code"))),
 	}
 	if query.PageSize > 50 {
 		query.PageSize = 50

backend/internal/modules/listing/public_query.go

@@ -16,10 +16,16 @@ func (r *Repository) ListPublic(ctx context.Context, query PublicListQuery) (*Pu
 		return r.listPublicPage(ctx, query, page, pageSize)
 	}
 
+	db := r.baseQuery(ctx).
+		Where("l.status = ? AND l.review_status = ? AND l.in_transaction = ?", "published", "approved", false)
+
+	if query.DistributionSiteCode != "" {
+		db = db.Joins("INNER JOIN distribution_site_accounts AS dsa ON dsa.listing_id = l.id AND dsa.display_status = 'enabled'").
+			Joins("INNER JOIN distribution_sites AS ds ON ds.id = dsa.site_id AND ds.site_code = ? AND ds.status = 'active' AND ds.display_account_enabled = ?", query.DistributionSiteCode, true)
+	}
+
 	var rows []listingRow
-	err := r.baseQuery(ctx).
-		Where("l.status = ? AND l.review_status = ? AND l.in_transaction = ?", "published", "approved", false).
-		Order("l.published_at DESC, l.id DESC").
+	err := db.Order("l.published_at DESC, l.id DESC").
 		Scan(&rows).Error
 	if err != nil {
 		return nil, err
@@ -103,6 +109,9 @@ func normalizedPublicPage(query PublicListQuery) (int, int) {
 }
 
 func canListPublicWithSQL(query PublicListQuery) bool {
+	if query.DistributionSiteCode != "" {
+		return false
+	}
 	if query.Keyword != "" {
 		return false
 	}

backend/internal/modules/listing/service_test.go

@@ -746,3 +746,49 @@ func containsString(values []string, target string) bool {
 	}
 	return false
 }
+
+func TestListPublicWithDistributionSiteCode(t *testing.T) {
+	db := database.NewTestDB()
+	if err := database.MigrateListingLifecycleTestSchema(db); err != nil {
+		t.Fatalf("migrate err: %v", err)
+	}
+	if err := db.AutoMigrate(&model.DistributionSite{}, &model.DistributionSiteAccount{}); err != nil {
+		t.Fatalf("migrate distribution err: %v", err)
+	}
+
+	repo := NewRepository(db, nil)
+
+	account1 := model.GameAccount{Title: "号1", GameName: "delta", Status: "active"}
+	account2 := model.GameAccount{Title: "号2", GameName: "delta", Status: "active"}
+	db.Create(&account1)
+	db.Create(&account2)
+
+	l1 := model.RentalListing{ListingNo: "L101", AccountID: account1.ID, Status: "published", ReviewStatus: "approved", PriceCent: 1000}
+	l2 := model.RentalListing{ListingNo: "L102", AccountID: account2.ID, Status: "published", ReviewStatus: "approved", PriceCent: 2000}
+	db.Create(&l1)
+	db.Create(&l2)
+
+	site := model.DistributionSite{SiteCode: "site_alpha", SiteName: "分销A", Domain: "a.com", Status: "active", DisplayAccountEnabled: true}
+	db.Create(&site)
+
+	dsa := model.DistributionSiteAccount{SiteID: site.ID, AccountID: account1.ID, ListingID: l1.ID, DisplayStatus: "enabled"}
+	db.Create(&dsa)
+
+	res, err := repo.ListPublic(context.Background(), PublicListQuery{
+		DistributionSiteCode: "site_alpha",
+	})
+	if err != nil {
+		t.Fatalf("ListPublic err: %v", err)
+	}
+	if len(res.Items) != 1 || res.Items[0].ListingNo != "L101" {
+		t.Fatalf("expected only L101, got %+v", res.Items)
+	}
+
+	allRes, err := repo.ListPublic(context.Background(), PublicListQuery{})
+	if err != nil {
+		t.Fatalf("ListPublic err: %v", err)
+	}
+	if len(allRes.Items) != 2 {
+		t.Fatalf("expected 2 listings for main site, got %d", len(allRes.Items))
+	}
+}