import express from 'express';
import morgan from 'morgan';

const app = express();
app.use(express.json());
app.use(morgan('dev'));

const VLAN_ID = process.env.VLAN_ID || '2';
const MAX_UP = process.env.MAX_UP || '10000000'; // bits per second
const MAX_DOWN = process.env.MAX_DOWN || '10000000'; // bits per second

// Helper: standard Accept with VLAN + bandwidth
function buildAcceptPayload(extra = {}) {
  return {
    control: {
      'Auth-Type': 'Accept',
      ...extra.control,
    },
    reply: {
      'Tunnel-Type': 'VLAN',
      'Tunnel-Medium-Type': 'IEEE-802',
      'Tunnel-Private-Group-Id': String(VLAN_ID),
      'WISPr-Bandwidth-Max-Down': String(MAX_DOWN),
      'WISPr-Bandwidth-Max-Up': String(MAX_UP),
      ...extra.reply,
    },
  };
}

// Authorize endpoint: FreeRADIUS rlm_rest calls this in authorize {}
app.post('/authorize', (req, res) => {
  console.log('--- RADIUS Authorize Request ---');
  console.log(JSON.stringify(req.body, null, 2));

  // Por ahora aprobamos todas las solicitudes válidas (si traen User-Name)
  const attrs = (req.body && (req.body.attributes || req.body.request)) || {};
  if (!attrs['User-Name'] && !attrs['User-Name*0']) {
    // Responder vacío -> no cambia nada; o devolver 204
    return res.status(200).json({});
  }

  return res.status(200).json(buildAcceptPayload());
});

// Accounting endpoint (opcional)
app.post('/accounting', (req, res) => {
  console.log('--- RADIUS Accounting ---');
  console.log(JSON.stringify(req.body, null, 2));
  return res.status(200).json({});
});

const port = process.env.PORT || 3000;
app.listen(port, () => {
  console.log(`Node RADIUS REST API listening on :${port}`);
});