using System;
using System.IO;
using YooAsset;

/// <summary>
/// 文件偏移加密方式
/// </summary>
public class FileOffsetEncryption : IEncryptionServices
{
    int offset = 254;
    public EncryptResult Encrypt(EncryptFileInfo fileInfo)
    {
        // 注意：只对音频资源包加密
        //if (fileInfo.BundleName.Contains("_gameres_audio"))
        //{
            
            byte[] fileData = File.ReadAllBytes(fileInfo.FileLoadPath);
            var encryptedData = new byte[fileData.Length + offset];
            Buffer.BlockCopy(fileData, 0, encryptedData, offset, fileData.Length);

            EncryptResult result = new EncryptResult();
            result.Encrypted = true;
            result.EncryptedData = encryptedData;
            return result;
        //}
        //else
        //{
        //    EncryptResult result = new EncryptResult();
        //    result.Encrypted = false;
        //    return result;
        //}
    }
}