#!/usr/bin/env node
const http = require('http');
const fs = require('fs');
const path = require('path');

const PORT = 18788;
const CONFIG_PATH = path.join(__dirname, '../data/.openclaw/openclaw.json');

const server = http.createServer((req, res) => {
  // CORS headers
  res.setHeader('Access-Control-Allow-Origin', '*');
  res.setHeader('Access-Control-Allow-Methods', 'GET, POST, OPTIONS');
  res.setHeader('Access-Control-Allow-Headers', 'Content-Type');

  if (req.method === 'OPTIONS') {
    res.writeHead(200);
    res.end();
    return;
  }

  // API: Get config
  if (req.url === '/api/config' && req.method === 'GET') {
    try {
      const config = fs.existsSync(CONFIG_PATH)
        ? JSON.parse(fs.readFileSync(CONFIG_PATH, 'utf8'))
        : {};
      res.writeHead(200, { 'Content-Type': 'application/json' });
      res.end(JSON.stringify(config));
    } catch (err) {
      res.writeHead(500, { 'Content-Type': 'application/json' });
      res.end(JSON.stringify({ error: err.message }));
    }
    return;
  }

  // API: Save config
  if (req.url === '/api/config' && req.method === 'POST') {
    let body = '';
    req.on('data', chunk => body += chunk);
    req.on('end', () => {
      try {
        const config = JSON.parse(body);
        const dir = path.dirname(CONFIG_PATH);
        if (!fs.existsSync(dir)) fs.mkdirSync(dir, { recursive: true });
        fs.writeFileSync(CONFIG_PATH, JSON.stringify(config, null, 2));
        res.writeHead(200, { 'Content-Type': 'application/json' });
        res.end(JSON.stringify({ ok: true }));
      } catch (err) {
        res.writeHead(500, { 'Content-Type': 'application/json' });
        res.end(JSON.stringify({ error: err.message }));
      }
    });
    return;
  }

  // Serve static files
  const filePath = req.url === '/'
    ? path.join(__dirname, 'public/index.html')
    : path.join(__dirname, 'public', req.url);

  if (fs.existsSync(filePath) && fs.statSync(filePath).isFile()) {
    const ext = path.extname(filePath);
    const contentType = {
      '.html': 'text/html',
      '.css': 'text/css',
      '.js': 'application/javascript',
      '.json': 'application/json'
    }[ext] || 'text/plain';

    res.writeHead(200, { 'Content-Type': contentType });
    fs.createReadStream(filePath).pipe(res);
  } else {
    res.writeHead(404);
    res.end('Not Found');
  }
});

server.listen(PORT, '127.0.0.1', () => {
  console.log(`\n🦞 U-Claw Config Center`);
  console.log(`   http://127.0.0.1:${PORT}`);
  console.log(`\n   Config file: ${CONFIG_PATH}\n`);
});