const express = require('express');
const axios = require('axios');

const app = express();
const port = 3000;
// Minecraft 3000 Minecraft Res 3002
// Forge/Fabric/NeoForge/Optifine/LiteLoaer/Minecraft Maven 3001
// MCBBS 3003

app.use((req, res, next) => {
  const userAgent = req.headers['user-agent'];
  if (userAgent && (userAgent.includes('PCL') || userAgent.includes('FCL') || userAgent.includes('HMCL') || userAgent.includes('BakaXL'))) {
    next(); // User-Agent 已经包含所需字符串，无需修改
  } else {
    // 重定向前设置 User-Agent
    req.customUserAgent = 'MTB Hello';
    next();
  }
});
//////
app.get('/:path(*)', (req, res) => {
  const path = req.params.path;
  const userAgent = req.customUserAgent || 'MTB Hello';
  const redirectUrl = `https://bmclapi2.bangbang93.com/${path}`;
  res.set({
    'Location': redirectUrl,
    'User-Agent': userAgent
  }).status(302).end();
});



app.listen(3000, () => {
  console.log('Server is running on port 3000');
});