using AlicizaX.Resource.Runtime;

namespace AlicizaX.Resource.Editor
{
    using System;
    using System.IO;
    using YooAsset;

    /// <summary>
    /// 文件偏移加密方式
    /// </summary>
    public class FileOffsetEncryption : IEncryptionServices
    {
        public EncryptResult Encrypt(EncryptFileInfo fileInfo)
        {
            int offset = 32;
            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;
        }
    }


    /// <summary>
    /// 文件流加密方式
    /// </summary>
    public class FileStreamEncryption : IEncryptionServices
    {
        public const byte KEY = 64;

        public EncryptResult Encrypt(EncryptFileInfo fileInfo)
        {
            var fileData = File.ReadAllBytes(fileInfo.FileLoadPath);
            for (int i = 0; i < fileData.Length; i++)
            {
                fileData[i] ^= BundleStream.KEY;
            }

            EncryptResult result = new EncryptResult();
            result.Encrypted = true;
            result.EncryptedData = fileData;
            return result;
        }
    }
}