fix a few things

ChunkDBExtractor.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.8.34525.116
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ChunkDBExtractor", "ChunkDBExtractor\ChunkDBExtractor.csproj", "{4A2367D7-CA9E-4B23-9EB1-D0DA803E9B86}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{4A2367D7-CA9E-4B23-9EB1-D0DA803E9B86}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{4A2367D7-CA9E-4B23-9EB1-D0DA803E9B86}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{4A2367D7-CA9E-4B23-9EB1-D0DA803E9B86}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{4A2367D7-CA9E-4B23-9EB1-D0DA803E9B86}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {72A65FA7-51DC-4E62-927D-B55412251CCD}
+	EndGlobalSection
+EndGlobal

ChunkDBExtractor/App.xaml

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+<Application x:Class="ChunkDBExtractor.App"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:local="clr-namespace:ChunkDBExtractor"
+             StartupUri="MainWindow.xaml">
+    <Application.Resources>
+         
+    </Application.Resources>
+</Application>

ChunkDBExtractor/App.xaml.cs

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+using System.Configuration;
+using System.Data;
+using System.Windows;
+
+namespace ChunkDBExtractor
+{
+    /// <summary>
+    /// Interaction logic for App.xaml
+    /// </summary>
+    public partial class App : Application
+    {
+    }
+
+}

ChunkDBExtractor/AssemblyInfo.cs

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+using System.Windows;
+
+[assembly: ThemeInfo(
+    ResourceDictionaryLocation.None,            //where theme specific resource dictionaries are located
+                                                //(used if a resource is not found in the page,
+                                                // or application resource dictionaries)
+    ResourceDictionaryLocation.SourceAssembly   //where the generic resource dictionary is located
+                                                //(used if a resource is not found in the page,
+                                                // app, or any theme specific resource dictionaries)
+)]

ChunkDBExtractor/ChunkDBExtractor.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <TargetFramework>net8.0-windows</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <UseWPF>true</UseWPF>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="ICSharpCode.SharpZipLib.dll" Version="0.85.4.369" />
+  </ItemGroup>
+
+</Project>

ChunkDBExtractor/ChunkDBExtractor.csproj.user

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+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="Current" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup />
+  <ItemGroup>
+    <ApplicationDefinition Update="App.xaml">
+      <SubType>Designer</SubType>
+    </ApplicationDefinition>
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Update="ProgressWindow.xaml.cs">
+      <SubType>Code</SubType>
+    </Compile>
+  </ItemGroup>
+  <ItemGroup>
+    <Page Update="MainWindow.xaml">
+      <SubType>Designer</SubType>
+    </Page>
+    <Page Update="ProgressWindow.xaml">
+      <SubType>Designer</SubType>
+    </Page>
+  </ItemGroup>
+</Project>

ChunkDBExtractor/MainWindow.xaml

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+<Window x:Class="ChunkDBExtractor.MainWindow"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        Title="ChunkDB Extractor" Height="200" Width="500" ResizeMode="NoResize">
+    <Grid>
+        <StackPanel Margin="10">
+            <Button Name="SelectSourceButton" Content="Select Source Folder" Click="SelectSourceButton_Click" />
+            <TextBox Name="SourceFolderTextBox" IsReadOnly="True" Margin="0,5,0,10" />
+
+            <Button Name="SelectDestinationButton" Content="Select Destination Folder" Click="SelectDestinationButton_Click" />
+            <TextBox Name="DestinationFolderTextBox" IsReadOnly="True" Margin="0,5,0,10" />
+
+            <Button Name="ExtractButton" Content="Extract Files" Click="ExtractButton_Click" IsEnabled="False" />
+        </StackPanel>
+    </Grid>
+</Window>

ChunkDBExtractor/MainWindow.xaml.cs

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+using System;
+using System.IO;
+using System.Windows;
+using System.Threading.Tasks;
+using Microsoft.Win32;
+using System.Collections.Generic;
+using ICSharpCode.SharpZipLib.Zip.Compression;
+using ICSharpCode.SharpZipLib.Zip.Compression.Streams;
+
+namespace ChunkDBExtractor
+{
+    public partial class MainWindow : Window
+    {
+        private string sourceFolder;
+        private string destinationFolder;
+
+        public MainWindow()
+        {
+            InitializeComponent();
+        }
+
+        private void SelectSourceButton_Click(object sender, RoutedEventArgs e)
+        {
+            var dialog = new OpenFileDialog
+            {
+                CheckFileExists = false,
+                CheckPathExists = true,
+                ValidateNames = false,
+                FileName = "Select Folder"
+            };
+
+            if (dialog.ShowDialog() == true)
+            {
+                sourceFolder = Path.GetDirectoryName(dialog.FileName);
+                SourceFolderTextBox.Text = sourceFolder;
+                CheckIfReadyToExtract();
+            }
+        }
+
+        private void SelectDestinationButton_Click(object sender, RoutedEventArgs e)
+        {
+            var dialog = new OpenFileDialog
+            {
+                CheckFileExists = false,
+                CheckPathExists = true,
+                ValidateNames = false,
+                FileName = "Select Folder"
+            };
+
+            if (dialog.ShowDialog() == true)
+            {
+                destinationFolder = Path.GetDirectoryName(dialog.FileName);
+                DestinationFolderTextBox.Text = destinationFolder;
+                CheckIfReadyToExtract();
+            }
+        }
+
+        private void ExtractButton_Click(object sender, RoutedEventArgs e)
+        {
+            if (string.IsNullOrEmpty(sourceFolder) || string.IsNullOrEmpty(destinationFolder))
+            {
+                MessageBox.Show("Please select both source and destination folders.");
+                return;
+            }
+
+            ProgressWindow progressWindow = new ProgressWindow();
+            progressWindow.Owner = this;
+            progressWindow.ShowInTaskbar = false;
+
+            Task.Run(async () =>
+            {
+                progressWindow.Dispatcher.Invoke(() => progressWindow.StartAnimation());
+                await ExtractChunkDBFilesAsync(sourceFolder, destinationFolder, progressWindow);
+
+                progressWindow.Dispatcher.Invoke(() =>
+                {
+                    progressWindow.StopAnimation();
+                    progressWindow.Close();
+                });
+
+                MessageBox.Show("Files extracted successfully!");
+            });
+
+            progressWindow.ShowDialog();
+        }
+
+        private void CheckIfReadyToExtract()
+        {
+            ExtractButton.IsEnabled = !string.IsNullOrEmpty(sourceFolder) && !string.IsNullOrEmpty(destinationFolder);
+        }
+
+        private async Task ExtractChunkDBFilesAsync(string source, string destination, ProgressWindow progressWindow)
+        {
+            var chunkdbFiles = Directory.GetFiles(source, "*.chunkdb");
+
+            foreach (var file in chunkdbFiles)
+            {
+                try
+                {
+                    progressWindow.UpdateProgress(Path.GetFileName(file));
+
+                    await Task.Run(() => ExtractChunkDBFile(file, destination));
+                }
+                catch (Exception ex)
+                {
+                    MessageBox.Show($"An error occurred while extracting {file}: {ex.Message}");
+                }
+            }
+        }
+
+        private void ExtractChunkDBFile(string file, string destination)
+        {
+            using (var stream = File.OpenRead(file))
+            using (var reader = new BinaryReader(stream))
+            {
+                var chunkDatabase = new FChunkDatabase(reader);
+
+                foreach (var location in chunkDatabase.Locations)
+                {
+                    stream.Seek((long)location.ByteStart, SeekOrigin.Begin);
+                    var chunkHeader = new FChunkHeader(reader);
+
+                    var guidString = $"{chunkHeader.Guid.A:X8}{chunkHeader.Guid.B:X8}{chunkHeader.Guid.C:X8}{chunkHeader.Guid.D:X8}";
+                    var chunkFilePath = Path.Combine(destination, guidString);
+
+                    var chunkData = reader.ReadBytes((int)chunkHeader.DataSizeCompressed);
+                    var decompressedData = chunkHeader.StoredAs == EChunkStorageFlags.None ? chunkData : FChunkHeader.Decompress(chunkData);
+
+                    File.WriteAllBytes(chunkFilePath, decompressedData);
+                }
+            }
+        }
+
+        // ChunkDBTool
+        private class FChunkDatabase
+        {
+            private const uint CHUNKDB_HEADER_MAGIC = 0xB1FE3AA3;
+
+            public uint Version { get; private set; }
+            public uint HeaderSize { get; private set; }
+            public ulong DataSize { get; private set; }
+            public int ChunkCount { get; private set; }
+
+            public FChunkLocation[] Locations { get; private set; }
+            public FChunkHeader[] Chunks { get; private set; }
+
+            public FChunkDatabase(BinaryReader reader)
+            {
+                if (reader.ReadUInt32() != CHUNKDB_HEADER_MAGIC)
+                    throw new Exception("Incorrect chunkdb.");
+
+                Version = reader.ReadUInt32();
+                HeaderSize = reader.ReadUInt32();
+                DataSize = reader.ReadUInt64();
+                ChunkCount = reader.ReadInt32();
+
+                var locations = new List<FChunkLocation>();
+                for (var i = 0; i < ChunkCount; i++)
+                    locations.Add(new FChunkLocation(reader));
+
+                Locations = locations.ToArray();
+
+                var chunks = new List<FChunkHeader>();
+                for (var i = 0; i < Locations.Length; i++)
+                {
+                    reader.BaseStream.Position = (long)Locations[i].ByteStart;
+                    chunks.Add(new FChunkHeader(reader));
+                }
+
+                Chunks = chunks.ToArray();
+            }
+        }
+
+        private class FChunkLocation
+        {
+            public FGuid ChunkId { get; private set; }
+            public ulong ByteStart { get; private set; }
+            public int ByteSize { get; private set; }
+
+            public FChunkLocation(BinaryReader reader)
+            {
+                ChunkId = new FGuid(reader);
+                ByteStart = reader.ReadUInt64();
+                ByteSize = reader.ReadInt32();
+            }
+        }
+
+        private class FGuid
+        {
+            public uint A { get; private set; }
+            public uint B { get; private set; }
+            public uint C { get; private set; }
+            public uint D { get; private set; }
+
+            public FGuid(BinaryReader reader)
+            {
+                A = reader.ReadUInt32();
+                B = reader.ReadUInt32();
+                C = reader.ReadUInt32();
+                D = reader.ReadUInt32();
+            }
+        }
+
+        private class FChunkHeader
+        {
+            private const uint CHUNK_HEADER_MAGIC = 0xB1FE3AA2;
+
+            public uint Version { get; private set; }
+            public uint HeaderSize { get; private set; }
+            public uint DataSizeCompressed { get; private set; }
+            public FGuid Guid { get; private set; }
+            public ulong RollingHash { get; private set; }
+            public EChunkStorageFlags StoredAs { get; private set; }
+            public byte[] SHAHash { get; private set; }
+            public EChunkHashFlags HashType { get; private set; }
+
+            public FChunkHeader(BinaryReader reader)
+            {
+                if (reader.ReadUInt32() != CHUNK_HEADER_MAGIC)
+                    throw new Exception("Incorrect chunk.");
+
+                Version = reader.ReadUInt32();
+                HeaderSize = reader.ReadUInt32();
+                DataSizeCompressed = reader.ReadUInt32();
+                Guid = new FGuid(reader);
+                RollingHash = reader.ReadUInt64();
+                StoredAs = (EChunkStorageFlags)reader.ReadByte();
+                SHAHash = reader.ReadBytes(20);
+                HashType = (EChunkHashFlags)reader.ReadByte();
+            }
+
+            public static byte[] Decompress(byte[] data)
+            {
+                MemoryStream inflated = new MemoryStream();
+                using (Stream inflater = new InflaterInputStream(
+                    new MemoryStream(data), new Inflater(false)))
+                {
+                    int count = 0;
+                    byte[] deflated = new byte[4096];
+                    while ((count = inflater.Read(deflated, 0, deflated.Length)) != 0)
+                    {
+                        inflated.Write(deflated, 0, count);
+                    }
+                    inflated.Seek(0, SeekOrigin.Begin);
+                }
+                byte[] content = new byte[inflated.Length];
+                inflated.Read(content, 0, content.Length);
+                return content;
+            }
+        }
+
+        [Flags]
+        private enum EChunkStorageFlags : byte
+        {
+            None = 0,
+            Compressed = 1,
+            Encrypted = 2
+        }
+
+        [Flags]
+        private enum EChunkHashFlags : byte
+        {
+            None = 0,
+            RollingPoly64 = 1,
+            Sha1 = 2
+        }
+    }
+}

ChunkDBExtractor/ProgressWindow.xaml

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+<Window x:Class="ChunkDBExtractor.ProgressWindow"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        Title="Processing..." Height="120" Width="400" WindowStartupLocation="CenterScreen" WindowStyle="ToolWindow">
+    <Grid>
+        <StackPanel Margin="20">
+            <TextBlock Name="FileNameTextBlock" FontSize="16" TextAlignment="Center" Margin="0,0,0,10"/>
+        </StackPanel>
+    </Grid>
+</Window>

ChunkDBExtractor/ProgressWindow.xaml.cs

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+using System;
+using System.Windows;
+using System.Windows.Threading;
+
+namespace ChunkDBExtractor
+{
+    public partial class ProgressWindow : Window
+    {
+        private DispatcherTimer animationTimer;
+        private int dotCount = 0;
+        private string baseText = "Processing";
+
+        public ProgressWindow()
+        {
+            InitializeComponent();
+
+            // Initialize the animation timer
+            animationTimer = new DispatcherTimer();
+            animationTimer.Interval = TimeSpan.FromMilliseconds(500); // Update every 500ms
+            animationTimer.Tick += UpdateAnimation;
+        }
+
+        private void UpdateAnimation(object sender, EventArgs e)
+        {
+            dotCount = (dotCount + 1) % 4; // Cycle between 0, 1, 2, 3
+            string dots = new string('.', dotCount);
+            FileNameTextBlock.Text = $"{baseText}{dots}";
+        }
+
+        public void StartAnimation()
+        {
+            animationTimer.Start();
+        }
+
+        public void StopAnimation()
+        {
+            Dispatcher.Invoke(() =>
+            {
+                animationTimer.Stop();
+                FileNameTextBlock.Text = "Extraction Complete";
+            });
+        }
+
+        public void UpdateProgress(string fileName)
+        {
+            Dispatcher.Invoke(() =>
+            {
+                baseText = $"Processing: {fileName}"; // Update the base text with the current filename
+            });
+        }
+    }
+}