using EIS.Framework.Service.GEM;
using JWH;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Drawing;
using System.IO;
using System.IO.Compression;
using System.Linq;
using System.Runtime.Serialization.Formatters.Binary;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace DDUtilityApp.TEST
{

    public partial class FrmTest01 : Form
    {

        public string FileName { get; set; }

        public FrmTest01()
        {
            InitializeComponent();

            this.SetLayout();
            this.SetEventHandler();
        }

        protected void SetLayout()
        {

        }

        protected void SetEventHandler()
        {
            this.button1.Click += Button1_Click;
            this.button2.Click += Button2_Click;
        }

        private void Button1_Click(object sender, EventArgs e)
        {
            OpenFileDialog dlg = new OpenFileDialog();
            dlg.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);
            if (dlg.ShowDialog() != DialogResult.OK) return;

            this.FileName = dlg.FileName;
        }

        private void Button2_Click(object sender, EventArgs e)
        {
            FileInfo file = new FileInfo(this.FileName);
            Decompress(file);
        }

        private static string directoryPath = @".\temp";

        public static void Compress(DirectoryInfo directorySelected)
        {
            foreach (FileInfo fileToCompress in directorySelected.GetFiles())
            {
                using (FileStream originalFileStream = fileToCompress.OpenRead())
                {
                    if ((File.GetAttributes(fileToCompress.FullName) &
                       FileAttributes.Hidden) != FileAttributes.Hidden & fileToCompress.Extension != ".gz")
                    {
                        using (FileStream compressedFileStream = File.Create(fileToCompress.FullName + ".gz"))
                        {
                            using (GZipStream compressionStream = new GZipStream(compressedFileStream,
                               CompressionMode.Compress))
                            {
                                originalFileStream.CopyTo(compressionStream);
                            }
                        }
                        FileInfo info = new FileInfo(directoryPath + Path.DirectorySeparatorChar + fileToCompress.Name + ".gz");
                        Console.WriteLine($"Compressed {fileToCompress.Name} from {fileToCompress.Length.ToString()} to {info.Length.ToString()} bytes.");
                    }
                }
            }
        }

        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 (GZipStream decompressionStream = new GZipStream(originalFileStream, CompressionMode.Decompress))
                    {
                        decompressionStream.CopyTo(decompressedFileStream);
                        Console.WriteLine($"Decompressed: {fileToDecompress.Name}");
                    }
                }
            }
        }

    }

}