Check for valid session.

src/lib/session.ts

@@ -88,5 +88,5 @@ export async function getSession(req: NextApiRequestCollect): Promise<SessionDat
     }
   }
 
-  return { ...session, visitId: visitId };
+  return { ...session, visitId };
 }

src/pages/api/send.ts

@@ -102,6 +102,11 @@ export default async (req: NextApiRequestCollect, res: NextApiResponse) => {
     await useSession(req, res);
 
     const session = req.session;
+
+    if (!session?.id) {
+      return;
+    }
+
     const iat = Math.floor(new Date().getTime() / 1000);
 
     // expire visitId after 30 minutes
@@ -111,10 +116,6 @@ export default async (req: NextApiRequestCollect, res: NextApiResponse) => {
 
     session.iat = iat;
 
-    if (!session.websiteId) {
-      return;
-    }
-
     if (type === COLLECTION_TYPE.event) {
       // eslint-disable-next-line prefer-const
       let [urlPath, urlQuery] = safeDecodeURI(url)?.split('?') || [];