import 'package:encrypt/encrypt.dart' as encrypt;
import 'package:flutter/foundation.dart';

import '../../env/env.dart';

var secretKey = Env.keyOfApp
    .toString()
    .split('XrXlBl')[0]; // Must be 16 characters for AES-128
const initializationVector = 'abcdefghijklmnop'; // Must be 16 characters
final encryptionHelper = EncryptionHelper(
  secretKey: secretKey,
  initializationVector: initializationVector,
);

class EncryptionHelper {
  final encrypt.Key key;
  final encrypt.IV iv;

  EncryptionHelper(
      {required String secretKey, required String initializationVector})
      : key = encrypt.Key.fromUtf8(secretKey),
        iv = encrypt.IV.fromUtf8(initializationVector);

  // Initialize the helper

  /// Encrypts the given plain text
  String encryptData(String plainText) {
    try {
      final encrypter = encrypt.Encrypter(encrypt.AES(key,
          mode: encrypt.AESMode.cbc)); // Explicitly use CBC mode
      final encrypted = encrypter.encrypt(plainText, iv: iv);
      return encrypted.base64;
    } catch (e) {
      debugPrint('Encryption Error: $e');
      return '';
    }
  }

  /// Decrypts the given encrypted text
  String decryptData(String encryptedText) {
    try {
      final encrypter = encrypt.Encrypter(encrypt.AES(key,
          mode: encrypt.AESMode.cbc)); // Explicitly use CBC mode
      final encrypted = encrypt.Encrypted.fromBase64(encryptedText);
      final decrypted = encrypter.decrypt(encrypted, iv: iv);
      return decrypted;
    } catch (e) {
      debugPrint('Decryption Error: $e');
      return '';
    }
  }
}