import 'package:chat_server/src/auth/crypto_service.dart';
import 'package:test/test.dart';

void main() {
  group('AuthService password hashing', () {
    test('hash + verify works', () {
      const password = 'pass1234';
      final hash = AuthService.hashPassword(password);

      expect(hash, isNotEmpty);
      expect(AuthService.verifyPassword(password, hash), isTrue);
      expect(AuthService.verifyPassword('wrong-password', hash), isFalse);
    });
  });

  group('CryptoService signing', () {
    test('signatures verify with matching keypair', () {
      final keyPair = CryptoService.generateKeyPair();
      const payload = 'alice@localhost:9870:1700000000';

      final signature = CryptoService.sign(payload, keyPair.privateKey);
      final ok = CryptoService.verify(payload, signature, keyPair.publicKey);

      expect(ok, isTrue);
    });

    test('signature fails for modified payload', () {
      final keyPair = CryptoService.generateKeyPair();
      const payload = 'payload-a';
      const tamperedPayload = 'payload-b';

      final signature = CryptoService.sign(payload, keyPair.privateKey);
      final ok = CryptoService.verify(
        tamperedPayload,
        signature,
        keyPair.publicKey,
      );

      expect(ok, isFalse);
    });
  });
}