syncrow-app/lib/features/auth/model/token.dart

import 'package:flutter_secure_storage/flutter_secure_storage.dart';

class Token {
  static const String loginAccessToken = 'access_token';
  static const String loginRefreshToken = 'refreshToken';

  final String accessToken;
  final String refreshToken;

  Token.emptyConstructor()
      : accessToken = '',
        refreshToken = '';

  Token(
    this.accessToken,
    this.refreshToken,
  );

  Token.refreshToken(this.refreshToken) : accessToken = '';

  factory Token.fromJson(Map<String, dynamic> json) {
    //save token to secure storage
    var storage = const FlutterSecureStorage();
    storage.write(key: loginAccessToken, value: json[loginAccessToken] ?? '');

    //create token object ?
    return Token(json[loginAccessToken] ?? '', json[loginRefreshToken] ?? '');
  }

  Map<String, String> toJson() => {loginRefreshToken: refreshToken};
}