Initial commit: OpenAI compatible API proxy with auto token refresh

- Implemented OpenAI compatible API proxy server
- Support for Anthropic and custom OpenAI format conversion
- Automatic API key refresh with WorkOS OAuth
- SSE streaming response transformation
- Smart header management for Factory endpoints
- Chinese documentation

server.js

@@ -0,0 +1,86 @@
+import express from 'express';
+import { loadConfig, isDevMode, getPort } from './config.js';
+import { logInfo, logError } from './logger.js';
+import router from './routes.js';
+import { initializeAuth } from './auth.js';
+
+const app = express();
+
+app.use(express.json({ limit: '50mb' }));
+app.use(express.urlencoded({ extended: true, limit: '50mb' }));
+
+app.use((req, res, next) => {
+  res.header('Access-Control-Allow-Origin', '*');
+  res.header('Access-Control-Allow-Methods', 'GET, POST, PUT, DELETE, OPTIONS');
+  res.header('Access-Control-Allow-Headers', 'Content-Type, Authorization');
+  
+  if (req.method === 'OPTIONS') {
+    return res.sendStatus(200);
+  }
+  next();
+});
+
+app.use(router);
+
+app.get('/', (req, res) => {
+  res.json({
+    name: 'droid2api',
+    version: '1.0.0',
+    description: 'OpenAI Compatible API Proxy',
+    endpoints: [
+      'GET /v1/models',
+      'POST /v1/chat/completions'
+    ]
+  });
+});
+
+app.use((err, req, res, next) => {
+  logError('Unhandled error', err);
+  res.status(500).json({
+    error: 'Internal server error',
+    message: isDevMode() ? err.message : undefined
+  });
+});
+
+(async () => {
+  try {
+    loadConfig();
+    logInfo('Configuration loaded successfully');
+    logInfo(`Dev mode: ${isDevMode()}`);
+    
+    // Initialize auth system (load and refresh API key)
+    await initializeAuth();
+    
+    const PORT = getPort();
+  logInfo(`Starting server on port ${PORT}...`);
+  
+  const server = app.listen(PORT)
+    .on('listening', () => {
+      logInfo(`Server running on http://localhost:${PORT}`);
+      logInfo('Available endpoints:');
+      logInfo('  GET  /v1/models');
+      logInfo('  POST /v1/chat/completions');
+    })
+    .on('error', (err) => {
+      if (err.code === 'EADDRINUSE') {
+        console.error(`\n${'='.repeat(80)}`);
+        console.error(`ERROR: Port ${PORT} is already in use!`);
+        console.error('');
+        console.error('Please choose one of the following options:');
+        console.error(`  1. Stop the process using port ${PORT}:`);
+        console.error(`     lsof -ti:${PORT} | xargs kill`);
+        console.error('');
+        console.error('  2. Change the port in config.json:');
+        console.error('     Edit config.json and modify the "port" field');
+        console.error(`${'='.repeat(80)}\n`);
+        process.exit(1);
+      } else {
+        logError('Failed to start server', err);
+        process.exit(1);
+      }
+    });
+  } catch (error) {
+    logError('Failed to start server', error);
+    process.exit(1);
+  }
+})();