const express = require('express');
const fs = require('fs');
const path = require('os');
const axios = require('axios');
const cheerio = require('cheerio');

const app = express();
const port = 7860;
const allowed = ['MLBB', 'BS', 'PUBG'];

async function fetchKey(game) {
  if (!allowed.includes(game)) throw new Error('Invalid game');

  const idxRes = await axios.get('https://web.aachann.my.id/Get-key/');
  const m = idxRes.data.match(/const sessionToken\s*=\s*["']([^"']+)["']/);
  if (!m) throw new Error('sessionToken not found');
  const sessionToken = m[1];

  const data = Buffer.from(`game=${game}&token=${sessionToken}`).toString('base64');
  const genRes = await axios.get(`https://web.aachann.my.id/Get-key/genkey.php?data=${data}`);
  const $ = cheerio.load(genRes.data);
  const key = $('#gameKey').text().trim();
  if (!key) throw new Error('key not found in response');
  return key;
}

app.get('/key', async (req, res) => {
  try {
    const game = (req.query.game || 'MLBB').toUpperCase();
    const key = await fetchKey(game);
    res.json({ game, key });
  } catch (e) {
    res.status(500).json({ error: e.message });
  }
});

app.get('/key/bulk', async (req, res) => {
  try {
    const game = (req.query.game || 'MLBB').toUpperCase();
    const qty = Math.min(parseInt(req.query.qty) || 10, 1000);
    const keys = [];
    for (let i = 0; i < qty; i++) keys.push(await fetchKey(game));
    const file = `${path.tmpdir()}/${game}-${Date.now()}.txt`;
    fs.writeFileSync(file, keys.join('\n'));
    res.download(file, `${game}-keys.txt`, () => fs.unlinkSync(file));
  } catch (e) {
    res.status(500).json({ error: e.message });
  }
});

app.listen(port, () => console.log(`Running on :${port}`));