chat bot integration

frontend/app/api/chat/route.ts

@@ -0,0 +1,38 @@
+import { NextResponse } from 'next/server';
+
+const CHAT_HOST = process.env.CHAT_API_URL || process.env.NEXT_PUBLIC_CHAT_API_URL || 'https://f52c8f4e7dfc.ngrok-free.app';
+
+export async function POST(req: Request) {
+  try {
+    const body = await req.json().catch(() => ({}));
+    const prompt = typeof body?.prompt === 'string' ? body.prompt : '';
+    if (!prompt.trim()) {
+      return NextResponse.json({ detail: 'Missing prompt' }, { status: 400 });
+    }
+
+    const controller = new AbortController();
+    const timeout = setTimeout(() => controller.abort(), 120_000);
+    try {
+      const upstream = await fetch(`${CHAT_HOST}/chat`, {
+        method: 'POST',
+        headers: { 'Content-Type': 'application/json', 'Accept': 'application/json' },
+        body: JSON.stringify({ prompt }),
+        signal: controller.signal,
+      });
+
+      const text = await upstream.text();
+      let json: any;
+      try { json = JSON.parse(text); } catch { json = { response: text }; }
+
+      if (!upstream.ok) {
+        return NextResponse.json(json || { detail: 'Chat failed' }, { status: upstream.status });
+      }
+      return NextResponse.json(json);
+    } finally {
+      clearTimeout(timeout);
+    }
+  } catch (err: any) {
+    const msg = err?.name === 'AbortError' ? 'Request timed out – model may be overloaded.' : (err?.message || 'Unexpected error');
+    return NextResponse.json({ detail: msg }, { status: 500 });
+  }
+}