using System.IO;
using System.Security.Cryptography;
using System.Text;
using UnityEngine;

public class EncryptFileCreator
{
    private static byte[] key = Encoding.UTF8.GetBytes("Sixteen byte key"); // 加密密钥，需16字节
    private static byte[] iv = Encoding.UTF8.GetBytes("InitializationVe");  // 确保IV长度为16字节

    public static void EncryptAndSaveData(string data,string path)
    {
        string filePath = Path.Combine(Application.streamingAssetsPath, path);
        if (!File.Exists(filePath))
        {
            try
            {
                // 创建文件
                File.WriteAllText(filePath, "");
                Debug.Log("文件已创建");
            }
            catch (IOException e)
            {
                Debug.LogError($"创建文件时出错: {e.Message}");
            }
        }
        // 将数据转换为字节数组
        byte[] plainText = Encoding.UTF8.GetBytes(data);

        // 创建AES加密器
        using (Aes aesAlg = Aes.Create())
        {
            aesAlg.Key = key;
            aesAlg.IV = iv;

            ICryptoTransform encryptor = aesAlg.CreateEncryptor(aesAlg.Key, aesAlg.IV);

            // 创建内存流和加密流
            using (MemoryStream msEncrypt = new MemoryStream())
            {
                using (CryptoStream csEncrypt = new CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write))
                {
                    csEncrypt.Write(plainText, 0, plainText.Length);
                    csEncrypt.FlushFinalBlock();

                    // 获取加密后的数据
                    byte[] encryptedData = msEncrypt.ToArray();

                    // 保存加密文件到StreamingAssets文件夹
                    string fullPath = Path.Combine(Application.streamingAssetsPath, filePath);
                    File.WriteAllBytes(fullPath, encryptedData);
                }
            }
        }
    }
}