auth_service.dart

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import 'package:jwt_decoder/jwt_decoder.dart';
 
import '../constants/strings.dart';
import 'secure_storage_service.dart';
 
class AuthService {
  final SecureStorageService _secureStorage = SecureStorageService(key: Strings.tokenKey);
 
  AuthService();
 
  Future<void> saveToken(String token) async {
    await _secureStorage.save(value: token);
  }
 
  Future<String?> getToken() async {
    return await _secureStorage.get();
  }
 
  Future<void> deleteToken() async {
    await _secureStorage.delete();
  }
 
  Future<bool> isTokenValid() async {
    final token = await getToken();
    if (token == null) return false;
 
    try {
      final Map<String, dynamic> decodedToken = JwtDecoder.decode(token);
      final DateTime expirationDate = DateTime.fromMillisecondsSinceEpoch(decodedToken['exp'] * 1000);
      return DateTime.now().isBefore(expirationDate);
    } catch (e) {
      return false;
    }
  }
}