using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Security.Cryptography.X509Certificates;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleAppTest
{
    class Program
    {
        [STAThread]
        static void Main(string[] args)
        {
           
            if (args.Length == 0) return; // 无参数则静默退出
            try
            {
                string[] revitExts = { ".rvt", ".rfa", ".rft", ".rte" };

                foreach (string filePath in args)
                {
                    if (!File.Exists(filePath)) continue;

                    string ext = Path.GetExtension(filePath).ToLowerInvariant();
                    if (revitExts.Contains(ext))
                    {
                        Decrypt(filePath);
                    }
                }
            }
            catch (Exception ex)
            {
                // 可选：记录错误（调试用）
                // File.WriteAllText(Path.Combine(Path.GetTempPath(), "rvt_clean_error.txt"), ex.ToString());
            }
            //Encrypt("E:\\Users\\Zhanggg\\Downloads\\AC35kV 1×240mm2电力电缆.rfa");
            return;            
            //FileHashRsaHelper.GenerateEncFile(@"D:\Users\Zhanggg\Desktop\");
            //FileHashRsaHelper.VerifyEncFile(@"D:\Users\Zhanggg\Desktop\");

            //string file = "E:\\Users\\Zhanggg\\Desktop\\新建文件夹\\1.ifc";
            //string subjectName = "CN=MyApp Code Signing";
            //string pfxPassword = "YourSecurePassword123!";
            //string pfxPath = "E:\\Users\\Zhanggg\\Desktop\\新建文件夹\\MySelfSignedCert.pfx";

            //var cert = DigitalSigner.CreateSelfSignedCertificate(subjectName);
            //File.WriteAllBytes(pfxPath, cert.Export(X509ContentType.Pfx, pfxPassword));

            // 签名
            //DigitalSigner.SignFileAuthenticode(file, pfxPath, pfxPassword, "C:\\Program Files (x86)\\Windows Kits\\10\\bin\\10.0.22621.0\\x64\\signtool.exe");
            //DigitalSigner.SignFile(file, pfxPath, pfxPassword);

            // 验证
            //bool valid = DigitalSigner.VerifySignature(file, file + ".sig", pfx);
            //Console.WriteLine("签名验证 " + (valid ? "成功" : "失败"));
        }

        private static void Decrypt(string filePath, string tag = "VmVyc2lvbiAxLjAgU1pNZWRpRGF0YQ==")
        {
            // 关键：用与写入时相同的编码（通常 UTF-8 或 ASCII）
            byte[] tagBytes = Encoding.UTF8.GetBytes(tag); // 或 Encoding.ASCII

            byte[] data = File.ReadAllBytes(filePath);

            // 检查开头和结尾是否匹配
            bool startMatch = data.Length >= tagBytes.Length &&
                              ArrayEquals(data, 0, tagBytes, 0, tagBytes.Length);
            bool endMatch = data.Length >= tagBytes.Length * 2 &&
                            ArrayEquals(data, data.Length - tagBytes.Length, tagBytes, 0, tagBytes.Length);

            if (startMatch && endMatch)
            {
                // 提取中间部分：去掉开头和结尾的 tag
                int start = tagBytes.Length;
                int length = data.Length - 2 * tagBytes.Length;
                byte[] original = new byte[length];
                Array.Copy(data, start, original, 0, length);

                File.WriteAllBytes(filePath, original);
                Console.WriteLine("✅ 文件已成功还原！");
            }
            else
            {
                Console.WriteLine("❌ 文件开头或结尾不匹配标记字符串。");
            }
        }
        private static void Encrypt(string markedRvtPath, string tag = "VmVyc2lvbiAxLjAgU1pNZWRpRGF0YQ==")
        {
            // 选择编码：通常用 UTF-8 或 ASCII（必须与后续读取时一致）
            Encoding encoding = Encoding.UTF8; // 或 Encoding.ASCII

            byte[] tagBytes = encoding.GetBytes(tag);
            byte[] originalData = File.ReadAllBytes(markedRvtPath);

            // 构造新文件内容：[tag] + [原始内容] + [tag]
            long newLength = (long)tagBytes.Length * 2 + originalData.Length;
            byte[] markedData = new byte[newLength];

            // 写入头部 tag
            //Array.Copy(tagBytes, 0, markedData, 0, tagBytes.Length);
            // 写入原始内容
            Array.Copy(originalData, 0, markedData, tagBytes.Length, originalData.Length);
            // 写入尾部 tag
            Array.Copy(tagBytes, 0, markedData, tagBytes.Length + originalData.Length, tagBytes.Length);

            // 保存新文件
            File.WriteAllBytes(markedRvtPath, markedData);
            Console.WriteLine("✅ 文件已成功加密！");
        }
        static bool ArrayEquals(byte[] a, int aStart, byte[] b, int bStart, int length)
        {
            for (int i = 0; i < length; i++)
            {
                if (a[aStart + i] != b[bStart + i])
                    return false;
            }
            return true;
        }
    }

}