import assert from 'node:assert/strict';
import { generateKeyPairSync, verify } from 'node:crypto';
import test from 'node:test';

import { signPayload } from '../lib/signPayload.mjs';

void test('signPayload produces verifiable Ed25519 token', () => {
  const { privateKey, publicKey } = generateKeyPairSync('ed25519');
  const pem = privateKey.export({ type: 'pkcs8', format: 'pem' });
  const payload = { v: 1, sub: 's1', pid: 'p', iat: 1, exp: 2, did: 'd1' };
  const token = signPayload(payload, pem);
  const [bodyB64, sigB64] = token.split('.');
  assert.ok(bodyB64 && sigB64);
  const body = Buffer.from(bodyB64, 'base64url');
  const sig = Buffer.from(sigB64, 'base64url');
  const ok = verify(null, body, publicKey, sig);
  assert.equal(ok, true);
});