import 'package:flutter_secure_storage/flutter_secure_storage.dart';

import '../../../domain/models/server_config.dart';

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

class CredentialStore {
  static const _usernameKey = 'localiserd_username';
  static const _passwordKey = 'localiserd_password';
  static const _hostKey = 'localiserd_host';
  static const _portKey = 'localiserd_port';

  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> saveServer(ServerConfig config) => Future.wait([
        _storage.write(key: _hostKey, value: config.host),
        _storage.write(key: _portKey, value: config.port.toString()),
      ]).then((_) {});

  Future<ServerConfig?> loadServer() async {
    final results = await Future.wait([
      _storage.read(key: _hostKey),
      _storage.read(key: _portKey),
    ]);
    final host = results[0];
    final portStr = results[1];
    if (host == null || portStr == null) return null;
    final port = int.tryParse(portStr);
    if (port == null) return null;
    return ServerConfig(host: host, port: port);
  }

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