Extensions.cs

using System.IO;
using System.IO.Compression;
using System.Linq;

namespace ReShade_Centralized
{
    //"Extensions" to common libraries within C# that add additional generic functionality that can be useful for any project.
    public static class ZipArchiveExtensions
    {
        public static void ExtractToDirectory(this ZipArchive archive, string destinationDirectoryName, bool overwrite)
        {
            if (!overwrite)
            {
                archive.ExtractToDirectory(destinationDirectoryName);
                return;
            }
            foreach (ZipArchiveEntry file in archive.Entries)
            {
                string completeFileName = Path.Combine(destinationDirectoryName, file.FullName);
                string directory = Path.GetDirectoryName(completeFileName);

                if (!Directory.Exists(directory))
                    Directory.CreateDirectory(directory);

                if (file.Name != "")
                    file.ExtractToFile(completeFileName, true);
            }
            archive.Dispose();
        }
    }

    public static class DirectoryExtensions
    {
        public static void MoveDirectoryOverwrite(string source, string target)
        {
            var sourcePath = source.TrimEnd('\\', ' ');
            var targetPath = target.TrimEnd('\\', ' ');
            //files;
            try
            {
                var files = Directory.EnumerateFiles(sourcePath, "*", SearchOption.AllDirectories)
                                                  .GroupBy(s => Path.GetDirectoryName(s));
                foreach (var folder in files)
                {
                    var targetFolder = folder.Key.Replace(sourcePath, targetPath);
                    Directory.CreateDirectory(targetFolder);
                    foreach (var file in folder)
                    {
                        var targetFile = Path.Combine(targetFolder, Path.GetFileName(file));
                        if (File.Exists(targetFile)) File.Delete(targetFile);
                        File.Move(file, targetFile);
                    }
                }
                Directory.Delete(source, true);
            }
            catch
            {
                return;
            }
        }
    }

}