feat(image-search): Use LLM from config

src/routes/images.ts

@@ -1,7 +1,8 @@
 import express from 'express';
 import handleImageSearch from '../agents/imageSearchAgent';
-import { ChatOpenAI } from '@langchain/openai';
-import { getOpenaiApiKey } from '../config';
+import { BaseChatModel } from '@langchain/core/language_models/chat_models';
+import { getAvailableProviders } from '../lib/providers';
+import { getChatModel, getChatModelProvider } from '../config';
 
 const router = express.Router();
 
@@ -9,10 +10,20 @@ router.post('/', async (req, res) => {
   try {
     const { query, chat_history } = req.body;
 
-    const llm = new ChatOpenAI({
-      temperature: 0.7,
-      openAIApiKey: getOpenaiApiKey(),
-    });
+    const models = await getAvailableProviders();
+    const provider = getChatModelProvider();
+    const chatModel = getChatModel();
+
+    let llm: BaseChatModel | undefined;
+
+    if (models[provider] && models[provider][chatModel]) {
+      llm = models[provider][chatModel] as BaseChatModel | undefined;
+    }
+
+    if (!llm) {
+      res.status(500).json({ message: 'Invalid LLM model selected' });
+      return;
+    }
 
     const images = await handleImageSearch({ query, chat_history }, llm);