// server/index.js
const express = require('express');
const { generateLicenseKey, hashLicenseKey } = require('./keygen');
const { saveLicense } = require('./models/license');
const { verifyLicenseKey } = require('./verify');

const app = express();
app.use(express.json());

app.post('/generate-license', async (req, res) => {
  const { userId, licenseType, tier, validUntil } = req.body;
  const licenseKey = generateLicenseKey(userId, licenseType, tier);
  const hashedKey = hashLicenseKey(JSON.parse(Buffer.from(licenseKey.split('.')[1], 'base64')).rawKey);

  await saveLicense(userId, hashedKey, licenseType, tier, validUntil);

  res.json({ licenseKey });
});

app.post('/validate-license', async (req, res) => {
  const { userId, licenseKey } = req.body;
  const valid = await verifyLicenseKey(userId, licenseKey);
  res.json({ valid });
});

app.listen(3000, () => console.log('License server running on port 3000'));