feat: Refactor user context handling and service methods

- Updated middleware to fetch user and tenant models by ID and set them in context.
- Refactored common service methods to accept userID as a parameter instead of extracting from context.
- Modified content service methods to include userID as a parameter for better clarity and performance.
- Adjusted coupon, creator, notification, order, tenant, user, and wallet services to utilize userID directly.
- Enhanced context key constants for improved readability and maintainability.

backend/app/services/notification.go

@@ -20,15 +20,9 @@ type notification struct {
 	job *job.Job
 }
 
-func (s *notification) List(ctx context.Context, page int, typeArg string) (*requests.Pager, error) {
-	userID := ctx.Value(consts.CtxKeyUser)
-	if userID == nil {
-		return nil, errorx.ErrUnauthorized
-	}
-	uid := cast.ToInt64(userID)
-
+func (s *notification) List(ctx context.Context, userID int64, page int, typeArg string) (*requests.Pager, error) {
 	tbl, q := models.NotificationQuery.QueryContext(ctx)
-	q = q.Where(tbl.UserID.Eq(uid))
+	q = q.Where(tbl.UserID.Eq(userID))
 
 	if typeArg != "" && typeArg != "all" {
 		q = q.Where(tbl.Type.Eq(typeArg))
@@ -66,16 +60,11 @@ func (s *notification) List(ctx context.Context, page int, typeArg string) (*req
 	}, nil
 }
 
-func (s *notification) MarkRead(ctx context.Context, id string) error {
-	userID := ctx.Value(consts.CtxKeyUser)
-	if userID == nil {
-		return errorx.ErrUnauthorized
-	}
-	uid := cast.ToInt64(userID)
+func (s *notification) MarkRead(ctx context.Context, userID int64, id string) error {
 	nid := cast.ToInt64(id)
 
 	_, err := models.NotificationQuery.WithContext(ctx).
-		Where(models.NotificationQuery.ID.Eq(nid), models.NotificationQuery.UserID.Eq(uid)).
+		Where(models.NotificationQuery.ID.Eq(nid), models.NotificationQuery.UserID.Eq(userID)).
 		UpdateSimple(models.NotificationQuery.IsRead.Value(true))
 	if err != nil {
 		return errorx.ErrDatabaseError.WithCause(err)