import * as CryptoJS from 'crypto-js';
import { parse } from 'flatted';

export class SymmetricCrypto {
  private key: string;

  constructor(key: string) {
    this.key = key;
  }

  decrypt(encryptedData: string): object | null {
    try {
      const bytes = CryptoJS.AES.decrypt(encryptedData, this.key);
      const decryptedData = bytes.toString(CryptoJS.enc.Utf8);
      return parse(decryptedData);
    } catch (error) {
      console.error('Decryption failed:', error);
      return null;
    }
  }
}