Fix: Build errors and text generation API

app/api/text-generation/route.ts

@@ -1,12 +1,4 @@
-import { streamText } from 'ai';
-import { createOpenAI } from '@ai-sdk/openai';
-
-// Create an OpenAI API client (that's edge friendly!)
-const customOpenAI = createOpenAI({
-  apiKey: process.env.BLABLADOR_API_KEY || '',
-  baseURL: 'https://api.helmholtz-blablador.fz-juelich.de/v1',
-  compatibility: 'strict',
-});
+import { OpenAIStream, StreamingTextResponse } from 'ai';
 
 // IMPORTANT! Set the runtime to edge
 export const runtime = 'edge';
@@ -14,15 +6,28 @@ export const runtime = 'edge';
 export async function POST(req: Request) {
   const { prompt, model } = await req.json();
 
-  const result = await streamText({
-    model: customOpenAI(model || 'alias-code'),
-    messages: [
-      {
-        role: 'user',
-        content: prompt,
-      },
-    ],
+  const response = await fetch('https://api.helmholtz-blablador.fz-juelich.de/v1/chat/completions', {
+    method: 'POST',
+    headers: {
+      'Content-Type': 'application/json',
+      'Authorization': `Bearer ${process.env.BLABLADOR_API_KEY || ''}`,
+    },
+    body: JSON.stringify({
+      model: model || 'alias-code',
+      messages: [{ role: 'user', content: prompt }],
+      stream: true,
+    }),
   });
 
-  return result.toTextStreamResponse();
-}
+  // Check for errors
+  if (!response.ok) {
+    return new Response(await response.text(), {
+      status: response.status,
+      statusText: response.statusText,
+    });
+  }
+
+  // Convert the response into a friendly text-stream
+  const stream = OpenAIStream(response);
+  return new StreamingTextResponse(stream);
+}