const express = require('express');
const { createProxyMiddleware } = require('http-proxy-middleware');
const cors = require('cors');

const app = express();
const PORT = process.env.PORT || 7860;

app.use(cors({
  origin: '*',
  credentials: true,
  methods: ['GET', 'POST', 'PUT', 'DELETE', 'OPTIONS'],
  allowedHeaders: ['Content-Type', 'Authorization', 'X-Requested-With']
}));

const proxyOptions = {
  target: 'https://anyrouter.top',
  changeOrigin: true,
  secure: true,
  followRedirects: true,
  headers: {
    'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36'
  },
  onProxyReq: (proxyReq, req, res) => {
    console.log(`Proxying: ${req.method} ${req.url} -> https://anyrouter.top${req.url}`);
  },
  onError: (err, req, res) => {
    console.error('Proxy Error:', err.message);
    res.status(500).json({ error: 'Proxy request failed', message: err.message });
  }
};

app.get('/health', (req, res) => {
  res.status(200).json({ status: 'healthy', timestamp: new Date().toISOString() });
});

app.use('/', createProxyMiddleware(proxyOptions));

app.listen(PORT, '0.0.0.0', () => {
  console.log(`Proxy server running on port ${PORT}`);
  console.log(`Proxying requests to: https://anyrouter.top`);
  console.log(`Access locally at: http://localhost:${PORT}`);
});