using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

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

namespace TestDecompressor
{
    

    public class Program
    {
        static string directoryPath = @"c:\temp";
        public static void Main()
        {

            DirectoryInfo directorySelected = new DirectoryInfo(directoryPath);
            Compress(directorySelected);

            foreach (FileInfo fileToDecompress in directorySelected.GetFiles("*.chunk"))
            {
                Decompress(fileToDecompress);
            }
            Console.ReadKey();
        }

        public static void Compress(DirectoryInfo directorySelected)
        {

            foreach (FileInfo file in directorySelected.GetFiles("*.xml"))
                using (FileStream originalFileStream = file.OpenRead())
                {
                    if ((File.GetAttributes(file.FullName) & FileAttributes.Hidden)
                        != FileAttributes.Hidden & file.Extension != ".cmp")
                    {
                        using (FileStream compressedFileStream = File.Create(file.FullName + ".cmp"))
                        {
                            using (DeflateStream compressionStream = new DeflateStream(compressedFileStream, CompressionMode.Compress))
                            {
                                originalFileStream.CopyTo(compressionStream);
                            }
                        }

                        FileInfo info = new FileInfo(directoryPath + "\\" + file.Name + ".cmp");
                        Console.WriteLine("Compressed {0} from {1} to {2} bytes.", file.Name, file.Length, info.Length);
                    }
                }
        }

        public static void Decompress(FileInfo fileToDecompress)
        {
            using (FileStream originalFileStream = fileToDecompress.OpenRead())
            {
                string currentFileName = fileToDecompress.FullName;
                string newFileName = currentFileName.Remove(currentFileName.Length - fileToDecompress.Extension.Length);

                using (FileStream decompressedFileStream = File.Create(newFileName))
                {
                    using (DeflateStream decompressionStream = new DeflateStream(originalFileStream, CompressionMode.Decompress))
                    {
                        decompressionStream.CopyTo(decompressedFileStream);
                        Console.WriteLine("Decompressed: {0}", fileToDecompress.Name);
                    }
                }
            }
        }
    }
}
