feat: Implement notification service and integrate with user interactions

- Added notification service to handle sending and listing notifications.
- Integrated notification sending on user follow and order payment events.
- Updated user service to include fetching followed tenants.
- Enhanced content service to manage access control for content assets.
- Implemented logic for listing content topics based on genre.
- Updated creator service to manage content updates and pricing.
- Improved order service to include detailed order information and notifications.
- Added tests for notification CRUD operations and order details.

backend/app/services/order_test.go

@@ -123,3 +123,49 @@ func (s *OrderTestSuite) Test_PurchaseFlow() {
 		})
 	})
 }
+
+func (s *OrderTestSuite) Test_OrderDetails() {
+	Convey("Order Details", s.T(), func() {
+		ctx := s.T().Context()
+		database.Truncate(ctx, s.DB,
+			models.TableNameOrder, models.TableNameOrderItem, models.TableNameUser,
+			models.TableNameContent, models.TableNameContentPrice, models.TableNameTenant,
+			models.TableNameContentAccess, models.TableNameTenantLedger, models.TableNameMediaAsset, models.TableNameContentAsset,
+		)
+
+		// Setup
+		creator := &models.User{Username: "creator2", Phone: "13800000002"}
+		models.UserQuery.WithContext(ctx).Create(creator)
+		tenant := &models.Tenant{UserID: creator.ID, Name: "Best Shop", Status: consts.TenantStatusVerified}
+		models.TenantQuery.WithContext(ctx).Create(tenant)
+		content := &models.Content{TenantID: tenant.ID, UserID: creator.ID, Title: "Amazing Song", Status: consts.ContentStatusPublished}
+		models.ContentQuery.WithContext(ctx).Create(content)
+		price := &models.ContentPrice{TenantID: tenant.ID, ContentID: content.ID, PriceAmount: 500, Currency: consts.CurrencyCNY}
+		models.ContentPriceQuery.WithContext(ctx).Create(price)
+
+		// Asset (Cover)
+		asset := &models.MediaAsset{TenantID: tenant.ID, UserID: creator.ID, Type: consts.MediaAssetTypeImage, ObjectKey: "cover.jpg"}
+		models.MediaAssetQuery.WithContext(ctx).Create(asset)
+		models.ContentAssetQuery.WithContext(ctx).Create(&models.ContentAsset{ContentID: content.ID, AssetID: asset.ID, Role: consts.ContentAssetRoleCover})
+
+		// Buyer
+		buyer := &models.User{Username: "buyer2", Phone: "13900000002", Balance: 1000}
+		models.UserQuery.WithContext(ctx).Create(buyer)
+		buyerCtx := context.WithValue(ctx, consts.CtxKeyUser, buyer.ID)
+
+		Convey("should get full order details", func() {
+			// Create & Pay
+			createRes, _ := Order.Create(buyerCtx, &order_dto.OrderCreateForm{ContentID: cast.ToString(content.ID)})
+			Order.Pay(buyerCtx, createRes.OrderID, &order_dto.OrderPayForm{Method: "balance"})
+
+			// Get Detail
+			detail, err := Order.GetUserOrder(buyerCtx, createRes.OrderID)
+			So(err, ShouldBeNil)
+			So(detail.TenantName, ShouldEqual, "Best Shop")
+			So(len(detail.Items), ShouldEqual, 1)
+			So(detail.Items[0].Title, ShouldEqual, "Amazing Song")
+			So(detail.Items[0].Cover, ShouldEndWith, "cover.jpg")
+			So(detail.Amount, ShouldEqual, 5.00)
+		})
+	})
+}