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/notification_test.go

@@ -0,0 +1,71 @@
+package services
+
+import (
+	"context"
+	"database/sql"
+	"testing"
+
+	"quyun/v2/app/commands/testx"
+	app_dto "quyun/v2/app/http/v1/dto"
+	"quyun/v2/database"
+	"quyun/v2/database/models"
+	"quyun/v2/pkg/consts"
+
+	. "github.com/smartystreets/goconvey/convey"
+	"github.com/spf13/cast"
+	"github.com/stretchr/testify/suite"
+	"go.ipao.vip/atom/contracts"
+	"go.uber.org/dig"
+)
+
+type NotificationTestSuiteInjectParams struct {
+	dig.In
+
+	DB       *sql.DB
+	Initials []contracts.Initial `group:"initials"`
+}
+
+type NotificationTestSuite struct {
+	suite.Suite
+	NotificationTestSuiteInjectParams
+}
+
+func Test_Notification(t *testing.T) {
+	providers := testx.Default().With(Provide)
+
+	testx.Serve(providers, t, func(p NotificationTestSuiteInjectParams) {
+		suite.Run(t, &NotificationTestSuite{NotificationTestSuiteInjectParams: p})
+	})
+}
+
+func (s *NotificationTestSuite) Test_CRUD() {
+	Convey("Notification CRUD", s.T(), func() {
+		ctx := s.T().Context()
+		database.Truncate(ctx, s.DB, models.TableNameNotification)
+
+		uID := int64(100)
+		ctx = context.WithValue(ctx, consts.CtxKeyUser, uID)
+
+		Convey("should send notification", func() {
+			err := Notification.Send(ctx, uID, "system", "Welcome", "Hello World")
+			So(err, ShouldBeNil)
+
+			list, err := Notification.List(ctx, 1)
+			So(err, ShouldBeNil)
+			So(list.Total, ShouldEqual, 1)
+			
+			items := list.Items.([]app_dto.Notification)
+			So(len(items), ShouldEqual, 1)
+			So(items[0].Title, ShouldEqual, "Welcome")
+			
+			// Mark Read
+			// Need ID
+			n, _ := models.NotificationQuery.WithContext(ctx).Where(models.NotificationQuery.UserID.Eq(uID)).First()
+			err = Notification.MarkRead(ctx, cast.ToString(n.ID))
+			So(err, ShouldBeNil)
+
+			nReload, _ := models.NotificationQuery.WithContext(ctx).Where(models.NotificationQuery.ID.Eq(n.ID)).First()
+			So(nReload.IsRead, ShouldBeTrue)
+		})
+	})
+}