import 'package:shared_preferences/shared_preferences.dart';

/// Persisted app settings + employee session.
class Settings {
  static const _kToken = 'emp_token';
  static const _kName = 'emp_name';
  static const _kRole = 'emp_role';

  /// Scalar360 API. Fixed per build (not shown to or changed by the user); a test build points at demo with
  /// `--dart-define=API_BASE_URL=https://demo.scalar360.in`.
  static const baseUrl = String.fromEnvironment('API_BASE_URL', defaultValue: 'https://api.scalar360.com');

  late SharedPreferences _prefs;
  Future<void> load() async => _prefs = await SharedPreferences.getInstance();

  String? get token => _prefs.getString(_kToken);
  String? get name => _prefs.getString(_kName);
  String get role => _prefs.getString(_kRole) ?? 'EMPLOYEE';
  bool get isManager => role == 'MANAGER';
  bool get isLoggedIn => (token ?? '').isNotEmpty;

  Future<void> saveSession({required String token, String? name, String? role}) async {
    await _prefs.setString(_kToken, token);
    if (name != null) await _prefs.setString(_kName, name);
    if (role != null) await _prefs.setString(_kRole, role);
  }

  Future<void> clearSession() async {
    await _prefs.remove(_kToken);
    await _prefs.remove(_kName);
    await _prefs.remove(_kRole);
  }
}