import 'package:flutter_secure_storage/flutter_secure_storage.dart';

typedef Credentials = ({String username, String password});

class CredentialStore {
  static const _usernameKey = 'localiserd_username';
  static const _passwordKey = 'localiserd_password';

  final _storage = const FlutterSecureStorage();

  Future<void> save(Credentials credentials) => Future.wait([
        _storage.write(key: _usernameKey, value: credentials.username),
        _storage.write(key: _passwordKey, value: credentials.password),
      ]).then((_) {});

  Future<Credentials?> load() async {
    final results = await Future.wait([
      _storage.read(key: _usernameKey),
      _storage.read(key: _passwordKey),
    ]);
    final username = results[0];
    final password = results[1];
    if (username == null || password == null) return null;
    return (username: username, password: password);
  }

  Future<void> clear() => Future.wait([
        _storage.delete(key: _usernameKey),
        _storage.delete(key: _passwordKey),
      ]).then((_) {});
}