Revert "feat: pipe stream to front end"

This reverts commit 99bf1b6b87f7214daad026e4494c3a810a819082.

app/api/vision-agent/route.ts

@@ -1,4 +1,4 @@
-import { OpenAIStream, StreamingTextResponse } from 'ai';
+import { StreamingTextResponse } from 'ai';
 
 import { auth } from '@/auth';
 import {
@@ -77,8 +77,8 @@ export async function POST(req: Request) {
   formData.append('image', url);
 
   const fetchResponse = await fetch(
-    'https://api.dev.landing.ai/v1/agent/chat?agent_class=vision_agent',
-    // 'http://localhost:5050/v1/agent/chat?agent_class=vision_agent',
+    // 'https://api.dev.landing.ai/v1/agent/chat?agent_class=vision_agent',
+    'http://localhost:5050/v1/agent/chat?agent_class=vision_agent',
     {
       method: 'POST',
       headers: {
@@ -90,9 +90,21 @@ export async function POST(req: Request) {
 
   // console.log('[Ming] ~ POST ~ fetchResponse:', fetchResponse);
 
-  if (fetchResponse.body) {
-    return new StreamingTextResponse(fetchResponse.body);
-  } else {
-    return fetchResponse;
-  }
+  const stream = visionAgentStream(fetchResponse, {
+    onStart: async () => {
+      console.log('Stream started');
+    },
+    onCompletion: async completion => {
+      console.log('Completion completed', completion);
+    },
+    onFinal: async completion => {
+      console.log('Stream completed', completion);
+    },
+    onToken: async token => {
+      console.log('Token received', token);
+    },
+  });
+  // Now you can consume the VisionAgentStream
+
+  return new StreamingTextResponse(stream);
 }