Update app.js

app.js

@@ -5,19 +5,17 @@ const crypto = require('crypto');
 const app = express();
 const port = 8000;
 
-// 这里粘贴您提供的所有常量和函数定义
 const NOTDIAMOND_URL = 'https://chat.notdiamond.ai/mini-chat';
 const NOTDIAMOND_HEADERS = {
   'Content-Type': 'application/json',
   'next-action': '8189eb37107121e024940f588629a394a594e6a4'
 };
-const AUTH_KEY = process.env.AUTH_KEY;
+const AUTH_KEY = process.env.AUTH_KEY || 'sk-linuxdo';
 
-const MODEL_LIST = [
-  {"provider":"openai","model":"gpt-4-turbo-2024-04-09"},{"provider":"google","model":"gemini-1.5-pro-exp-0801"},{"provider":"togetherai","model":"Meta-Llama-3.1-70B-Instruct-Turbo"},{"provider":"togetherai","model":"Meta-Llama-3.1-405B-Instruct-Turbo"},{"provider":"perplexity","model":"llama-3.1-sonar-large-128k-online"},{"provider":"google","model":"gemini-1.5-pro-latest"},{"provider":"anthropic","model":"claude-3-5-sonnet-20240620"},{"provider":"anthropic","model":"claude-3-haiku-20240307"},{"provider":"openai","model":"gpt-4o-mini"},{"provider":"openai","model":"gpt-4o"},{"provider":"mistral","model":"mistral-large-2407"}
-];
+// 默认模型，如果用户没有指定模型，就使用这个
+const DEFAULT_MODEL = 'gpt-4-turbo-2024-04-09';
 
-// 这里粘贴所有的函数定义（getNotdiamondModel, createOpenAIChunk, streamNotdiamondResponse）
+// 保留其他函数定义：createOpenAIChunk, streamNotdiamondResponse
 
 app.use(express.json());
 
@@ -31,7 +29,7 @@ app.post('/ai/v1/chat/completions', async (req, res) => {
     let requestData = req.body;
 
     let messages = requestData.messages;
-    let model = requestData.model || '';
+    let model = requestData.model || DEFAULT_MODEL;
     const stream = requestData.stream || false;
 
     if (!messages || !Array.isArray(messages)) {
@@ -42,17 +40,6 @@ app.post('/ai/v1/chat/completions', async (req, res) => {
       });
     }
 
-    try {
-      const { model: resolvedModel } = await getNotdiamondModel(messages, model);
-      if (resolvedModel) {
-        model = resolvedModel;
-      } else {
-        throw new Error("Failed to get model from NotDiamond");
-      }
-    } catch (error) {
-      return res.status(400).json({ error: error.message });
-    }
-
     const payload = {
       messages: messages,
       model: model,