// e2e/decode_token.js
const fs = require('fs');
const path = require('path');
const file = '/tmp/token_resp.txt';
if (!fs.existsSync(file)) { console.error('token response file not found:', file); process.exit(2); }
const s = fs.readFileSync(file, 'utf8');
const m = s.match(/"token":"([^"]+)"/);
if (!m) { console.error('token not found in file'); process.exit(2); }
const t = m[1];
console.log('TOKEN:', t);
const parts = t.split('.');
if (parts.length < 2) { console.error('invalid token'); process.exit(2); }
let payload = parts[1];
payload += '='.repeat((4 - (payload.length % 4)) % 4);
try {
  const buf = Buffer.from(payload.replace(/-/g,'+').replace(/_/g,'/'), 'base64');
  const json = buf.toString('utf8');
  try {
    const obj = JSON.parse(json);
    console.log('PAYLOAD:');
    console.log(JSON.stringify(obj, null, 2));
  } catch (e) {
    console.log('decoded payload (not json):', json);
  }
} catch (err) {
  console.error('decode error', err);
  process.exit(1);
}