Adapt to old_id

internal/application/product/dto/responses/product_responses.go

@@ -15,6 +15,7 @@ type PackageItemResponse struct {
 // ProductInfoResponse 产品详情响应
 type ProductInfoResponse struct {
 	ID          string  `json:"id" comment:"产品ID"`
+	OldID       *string `json:"old_id,omitempty" comment:"旧产品ID"`
 	Name        string  `json:"name" comment:"产品名称"`
 	Code        string  `json:"code" comment:"产品编号"`
 	Description string  `json:"description" comment:"产品简介"`
@@ -59,6 +60,7 @@ type ProductSearchResponse struct {
 // ProductSimpleResponse 产品简单信息响应
 type ProductSimpleResponse struct {
 	ID          string                  `json:"id" comment:"产品ID"`
+	OldID       *string                 `json:"old_id,omitempty" comment:"旧产品ID"`
 	Name        string                  `json:"name" comment:"产品名称"`
 	Code        string                  `json:"code" comment:"产品编号"`
 	Description string                  `json:"description" comment:"产品简介"`
@@ -79,6 +81,7 @@ type ProductStatsResponse struct {
 // ProductAdminInfoResponse 管理员产品详情响应
 type ProductAdminInfoResponse struct {
 	ID          string  `json:"id" comment:"产品ID"`
+	OldID       *string `json:"old_id,omitempty" comment:"旧产品ID"`
 	Name        string  `json:"name" comment:"产品名称"`
 	Code        string  `json:"code" comment:"产品编号"`
 	Description string  `json:"description" comment:"产品简介"`

internal/application/product/product_application_service_impl.go

@@ -436,9 +436,14 @@ func (s *ProductApplicationServiceImpl) GetProductByIDForAdmin(ctx context.Conte
 // GetProductByIDForUser 根据ID获取产品（用户端专用）
 // 业务流程：1. 获取产品信息 2. 验证产品可见性 3. 构建用户响应数据
 func (s *ProductApplicationServiceImpl) GetProductByIDForUser(ctx context.Context, query *appQueries.GetProductDetailQuery) (*responses.ProductInfoWithDocumentResponse, error) {
+	// 首先尝试通过新ID查找产品
 	product, err := s.productManagementService.GetProductWithCategory(ctx, query.ID)
 	if err != nil {
-		return nil, err
+		// 如果通过新ID找不到，尝试通过旧ID查找
+		product, err = s.productManagementService.GetProductByOldIDWithCategory(ctx, query.ID)
+		if err != nil {
+			return nil, err
+		}
 	}
 
 	// 用户端只能查看可见的产品
@@ -452,7 +457,7 @@ func (s *ProductApplicationServiceImpl) GetProductByIDForUser(ctx context.Contex
 
 	// 如果需要包含文档信息
 	if query.WithDocument != nil && *query.WithDocument {
-		doc, err := s.documentationAppService.GetDocumentationByProductID(ctx, query.ID)
+		doc, err := s.documentationAppService.GetDocumentationByProductID(ctx, product.ID)
 		if err == nil && doc != nil {
 			response.Documentation = doc
 		}
@@ -465,6 +470,7 @@ func (s *ProductApplicationServiceImpl) GetProductByIDForUser(ctx context.Contex
 func (s *ProductApplicationServiceImpl) convertToProductInfoResponse(product *entities.Product) *responses.ProductInfoResponse {
 	response := &responses.ProductInfoResponse{
 		ID:             product.ID,
+		OldID:          product.OldID,
 		Name:           product.Name,
 		Code:           product.Code,
 		Description:    product.Description,
@@ -507,6 +513,7 @@ func (s *ProductApplicationServiceImpl) convertToProductInfoResponse(product *en
 func (s *ProductApplicationServiceImpl) convertToProductAdminInfoResponse(product *entities.Product) *responses.ProductAdminInfoResponse {
 	response := &responses.ProductAdminInfoResponse{
 		ID:             product.ID,
+		OldID:          product.OldID,
 		Name:           product.Name,
 		Code:           product.Code,
 		Description:    product.Description,

internal/application/product/subscription_application_service_impl.go

@@ -231,6 +231,7 @@ func (s *SubscriptionApplicationServiceImpl) convertToSubscriptionInfoResponse(s
 func (s *SubscriptionApplicationServiceImpl) convertToProductSimpleResponse(product *entities.Product) *responses.ProductSimpleResponse {
 	return &responses.ProductSimpleResponse{
 		ID:          product.ID,
+		OldID:       product.OldID,
 		Name:        product.Name,
 		Code:        product.Code,
 		Description: product.Description,

internal/domains/product/entities/product.go

@@ -11,6 +11,7 @@ import (
 // Product 产品实体
 type Product struct {
 	ID          string          `gorm:"primaryKey;type:varchar(36)" comment:"产品ID"`
+	OldID       *string         `gorm:"type:varchar(36);index" comment:"旧产品ID，用于兼容"`
 	Name        string          `gorm:"type:varchar(100);not null" comment:"产品名称"`
 	Code        string          `gorm:"type:varchar(50);uniqueIndex;not null" comment:"产品编号"`
 	Description string          `gorm:"type:text" comment:"产品简介"`
@@ -94,4 +95,22 @@ func (p *Product) SetAsPackage() {
 
 func (p *Product) IsCombo() bool {
 	return p.IsPackage
+}
+
+// SetOldID 设置旧ID
+func (p *Product) SetOldID(oldID string) {
+	p.OldID = &oldID
+}
+
+// GetOldID 获取旧ID
+func (p *Product) GetOldID() string {
+	if p.OldID != nil {
+		return *p.OldID
+	}
+	return ""
+}
+
+// HasOldID 检查是否有旧ID
+func (p *Product) HasOldID() bool {
+	return p.OldID != nil && *p.OldID != ""
 }

internal/domains/product/repositories/product_repository_interface.go

@@ -13,6 +13,7 @@ type ProductRepository interface {
 
 	// 基础查询方法
 	FindByCode(ctx context.Context, code string) (*entities.Product, error)
+	FindByOldID(ctx context.Context, oldID string) (*entities.Product, error)
 	FindByCategoryID(ctx context.Context, categoryID string) ([]*entities.Product, error)
 	FindVisible(ctx context.Context) ([]*entities.Product, error)
 	FindEnabled(ctx context.Context) ([]*entities.Product, error)

internal/domains/product/services/product_management_service.go

@@ -105,6 +105,32 @@ func (s *ProductManagementService) GetProductWithCategory(ctx context.Context, p
 	return &product, nil
 }
 
+// GetProductByOldIDWithCategory 根据旧ID获取产品及其分类信息
+func (s *ProductManagementService) GetProductByOldIDWithCategory(ctx context.Context, oldID string) (*entities.Product, error) {
+	product, err := s.productRepo.FindByOldID(ctx, oldID)
+	if err != nil {
+		return nil, fmt.Errorf("产品不存在: %w", err)
+	}
+
+	// 加载分类信息
+	if product.CategoryID != "" {
+		category, err := s.categoryRepo.GetByID(ctx, product.CategoryID)
+		if err == nil {
+			product.Category = &category
+		}
+	}
+
+	// 如果是组合包，加载子产品信息
+	if product.IsPackage {
+		packageItems, err := s.productRepo.GetPackageItems(ctx, product.ID)
+		if err == nil {
+			product.PackageItems = packageItems
+		}
+	}
+
+	return product, nil
+}
+
 // GetPackageItems 获取组合包项目列表
 func (s *ProductManagementService) GetPackageItems(ctx context.Context, packageID string) ([]*entities.ProductPackageItem, error) {
 	packageItems, err := s.productRepo.GetPackageItems(ctx, packageID)

internal/infrastructure/database/repositories/product/gorm_product_repository.go

@@ -66,6 +66,19 @@ func (r *GormProductRepository) FindByCode(ctx context.Context, code string) (*e
 	return &entity, nil
 }
 
+// FindByOldID 根据旧ID查找产品
+func (r *GormProductRepository) FindByOldID(ctx context.Context, oldID string) (*entities.Product, error) {
+	var entity entities.Product
+	err := r.GetDB(ctx).Where("old_id = ?", oldID).First(&entity).Error
+	if err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			return nil, gorm.ErrRecordNotFound
+		}
+		return nil, err
+	}
+	return &entity, nil
+}
+
 // FindByCategoryID 根据分类ID查找产品
 func (r *GormProductRepository) FindByCategoryID(ctx context.Context, categoryID string) ([]*entities.Product, error) {
 	var productEntities []entities.Product