const http = require('http');
const httpProxy = require('http-proxy');

const proxy = httpProxy.createProxyServer({});
const app = http.createServer((req, res) => {
  if (req.url.startsWith('/api/')) {
    proxy.web(req, res, {
      target: 'http://hs.yifenbao.cn',
      changeOrigin: true,
      secure: false
    });
  } else {
    const fs = require('fs');
    const path = require('path');
    let fp = path.join(__dirname, '../dist/build/h5', req.url === '/' ? '/index.html' : req.url);
    if (!fs.existsSync(fp)) {
      fp = path.join(__dirname, '../dist/build/h5/index.html');
    }
    const ext = path.extname(fp);
    const types = {
      '.html': 'text/html',
      '.js': 'application/javascript',
      '.css': 'text/css',
      '.png': 'image/png',
      '.jpg': 'image/jpeg',
      '.ttf': 'font/ttf'
    };
    res.writeHead(200, { 'Content-Type': types[ext] || 'text/plain' });
    fs.createReadStream(fp).pipe(res);
  }
});

app.listen(3000, () => {
  console.log('Proxy Server running at http://localhost:3000');
});