Handle empty video search results in API

Adds a check for empty or missing video results in the POST handler for the videos API route. Returns a user-friendly message if SearxNG returns no results, possibly due to rate-limiting, blocking, or no matches.

Author: kamranxdev

src/app/api/videos/route.ts

@@ -20,6 +20,7 @@ interface VideoSearchBody {
   chatModel?: ChatModel;
 }
 
+// Only SearxNG is used for video search. YouTube Data API is NOT used.
 export const POST = async (req: Request) => {
   try {
     const body: VideoSearchBody = await req.json();
@@ -72,6 +73,12 @@ export const POST = async (req: Request) => {
       llm,
     );
 
+    if (!videos || videos.length === 0) {
+      return Response.json({
+        message: 'No real-time video results found. SearxNG may be rate-limited, blocked, or the query returned no results.'
+      }, { status: 200 });
+    }
+
     return Response.json({ videos }, { status: 200 });
   } catch (err) {
     console.error(`An error occurred while searching videos: ${err}`);