feat: 重构内容服务，优化数据预加载和用户互动功能；增加租户关注功能及相关测试用例

backend/app/services/content_test.go

@@ -158,3 +158,104 @@ func (s *ContentTestSuite) Test_CreateComment() {
 		})
 	})
 }
+
+func (s *ContentTestSuite) Test_Library() {
+	Convey("Library", s.T(), func() {
+		ctx := s.T().Context()
+		database.Truncate(ctx, s.DB, models.TableNameContent, models.TableNameContentAccess, models.TableNameUser, models.TableNameContentAsset, models.TableNameMediaAsset)
+
+		// User
+		u := &models.User{Username: "user_lib", Phone: "13900000002"}
+		models.UserQuery.WithContext(ctx).Create(u)
+		ctx = context.WithValue(ctx, consts.CtxKeyUser, u.ID)
+
+		// Content
+		c := &models.Content{TenantID: 1, UserID: u.ID, Title: "Paid Content", Genre: "video"}
+		models.ContentQuery.WithContext(ctx).Create(c)
+
+		// Asset (Video & Cover)
+		assetVid := &models.MediaAsset{TenantID: 1, UserID: u.ID, Type: consts.MediaAssetTypeVideo, ObjectKey: "video.mp4"}
+		assetImg := &models.MediaAsset{TenantID: 1, UserID: u.ID, Type: consts.MediaAssetTypeImage, ObjectKey: "cover.jpg"}
+		models.MediaAssetQuery.WithContext(ctx).Create(assetVid, assetImg)
+
+		models.ContentAssetQuery.WithContext(ctx).Create(
+			&models.ContentAsset{ContentID: c.ID, AssetID: assetVid.ID, Role: consts.ContentAssetRoleMain},
+			&models.ContentAsset{ContentID: c.ID, AssetID: assetImg.ID, Role: consts.ContentAssetRoleCover},
+		)
+
+		// Access
+		models.ContentAccessQuery.WithContext(ctx).Create(&models.ContentAccess{
+			TenantID: 1, UserID: u.ID, ContentID: c.ID, Status: "active",
+		})
+
+		Convey("should get library content with details", func() {
+			list, err := Content.GetLibrary(ctx)
+			So(err, ShouldBeNil)
+			So(len(list), ShouldEqual, 1)
+			So(list[0].Title, ShouldEqual, "Paid Content")
+			So(list[0].Type, ShouldEqual, "video")
+			So(list[0].Cover, ShouldEndWith, "cover.jpg")
+			So(list[0].IsPurchased, ShouldBeTrue)
+		})
+	})
+}
+
+func (s *ContentTestSuite) Test_Interact() {
+	Convey("Interact", s.T(), func() {
+		ctx := s.T().Context()
+		database.Truncate(ctx, s.DB, models.TableNameContent, models.TableNameUserContentAction, models.TableNameUser)
+
+		// User & Content
+		u := &models.User{Username: "user_act", Phone: "13900000003"}
+		models.UserQuery.WithContext(ctx).Create(u)
+		c := &models.Content{TenantID: 1, UserID: u.ID, Title: "Liked Content", Likes: 0}
+		models.ContentQuery.WithContext(ctx).Create(c)
+
+		ctx = context.WithValue(ctx, consts.CtxKeyUser, u.ID)
+
+		Convey("Like flow", func() {
+			// Add Like
+			err := Content.AddLike(ctx, cast.ToString(c.ID))
+			So(err, ShouldBeNil)
+
+			// Verify count
+			cReload, _ := models.ContentQuery.WithContext(ctx).Where(models.ContentQuery.ID.Eq(c.ID)).First()
+			So(cReload.Likes, ShouldEqual, 1)
+
+			// Get Likes
+			likes, err := Content.GetLikes(ctx)
+			So(err, ShouldBeNil)
+			So(len(likes), ShouldEqual, 1)
+			So(likes[0].ID, ShouldEqual, cast.ToString(c.ID))
+
+			// Remove Like
+			err = Content.RemoveLike(ctx, cast.ToString(c.ID))
+			So(err, ShouldBeNil)
+
+			// Verify count
+			cReload, _ = models.ContentQuery.WithContext(ctx).Where(models.ContentQuery.ID.Eq(c.ID)).First()
+			So(cReload.Likes, ShouldEqual, 0)
+		})
+
+		Convey("Favorite flow", func() {
+			// Add Favorite
+			err := Content.AddFavorite(ctx, cast.ToString(c.ID))
+			So(err, ShouldBeNil)
+
+			// Get Favorites
+			favs, err := Content.GetFavorites(ctx)
+			So(err, ShouldBeNil)
+			So(len(favs), ShouldEqual, 1)
+			So(favs[0].ID, ShouldEqual, cast.ToString(c.ID))
+
+			// Remove Favorite
+			err = Content.RemoveFavorite(ctx, cast.ToString(c.ID))
+			So(err, ShouldBeNil)
+
+			// Get Favorites
+			favs, err = Content.GetFavorites(ctx)
+			So(err, ShouldBeNil)
+			So(len(favs), ShouldEqual, 0)
+		})
+	})
+}