Release v38.0

Closes #226

.idea/Discord-History-Tracker.iml

@@ -8,6 +8,7 @@
       <excludeFolder url="file://$MODULE_DIR$/.vscode" />
       <excludeFolder url="file://$MODULE_DIR$/bld" />
       <excludeFolder url="file://$MODULE_DIR$/lib" />
+      <excludeFolder url="file://$MODULE_DIR$/app" />
     </content>
     <orderEntry type="jdk" jdkName="Python 3.8" jdkType="Python SDK" />
     <orderEntry type="sourceFolder" forTests="false" />

.vscode/tasks.json

@@ -1,52 +0,0 @@
-{
-    // See https://go.microsoft.com/fwlink/?LinkId=733558
-    // for the documentation about the tasks.json format
-    "version": "2.0.0",
-    "tasks": [
-        {
-            "label": "Build Raw",
-            "type": "shell",
-            "command": "python ./build.py --nominify --copytracker",
-            "group": {
-                "kind": "build",
-                "isDefault": true
-            },
-            "presentation": {
-                "reveal": "always",
-                "panel": "shared",
-                "echo": true,
-                "focus": false,
-                "showReuseMessage": false
-            },
-            "problemMatcher": []
-        },
-        {
-            "label": "Build Minified",
-            "type": "shell",
-            "command": "python ./build.py --copytracker",
-            "group": "build",
-            "presentation": {
-                "reveal": "always",
-                "panel": "shared",
-                "echo": true,
-                "focus": false,
-                "showReuseMessage": false
-            },
-            "problemMatcher": []
-        },
-        {
-            "label": "Build Website",
-            "type": "shell",
-            "command": "python ./build.py --website",
-            "group": "build",
-            "presentation": {
-                "reveal": "always",
-                "panel": "shared",
-                "echo": true,
-                "focus": false,
-                "showReuseMessage": false
-            },
-            "problemMatcher": []
-        }
-    ]
-}

README.md

@@ -1,48 +1,55 @@
 # Welcome
 
-All you need to **use Discord History Tracker** is either an up-to-date browser, or the [Discord desktop client](https://discord.com/download). Visit the [official website](https://dht.chylex.com) for instructions.
+For instructions on how to **use Discord History Tracker**, visit the [official website](https://dht.chylex.com).
 
 To **report an issue or suggestion**, first please see the [issues](https://github.com/chylex/Discord-History-Tracker/issues) page and make sure someone else hasn't already created a similar issue report. If you do find an existing issue, comment on it or add a reaction. Otherwise, either click [New Issue](https://github.com/chylex/Discord-History-Tracker/issues/new), or contact me via email [contact@chylex.com](mailto:contact@chylex.com) or Twitter [@chylexmc](https://twitter.com/chylexmc).
 
-If you are interested in **creating your own version** from the source code, continue reading the [build instructions](#Build-Instructions) below.
+If you are interested in **building from source code**, continue reading the [build instructions](#Build-Instructions) below.
+
+This branch is dedicated to the Discord History Tracker desktop app. If you are looking for the older browser-only version, visit the [master-browser-only](https://github.com/chylex/Discord-History-Tracker/tree/master-browser-only) branch.
 
 # Build Instructions
 
-Follow the steps below to create your own version of Discord History Tracker.
-
 ### Setup
 
 Fork the repository and clone it to your computer (if you've never used git, you can download the [GitHub Desktop](https://desktop.github.com) client to get started quickly).
 
-Now you can modify the source code:
-* `src/tracker/` contains JS files that are automatically combined into the **tracker bookmark/script**
-* `src/viewer/` contains HTML, CSS, JS files that are then combined into the **offline viewer page**
+Folder organization:
+* `app/` contains a Visual Studio solution for the desktop app
 * `lib/` contains utilities required to build the project
 * `web/` contains source code of the [official website](https://dht.chylex.com), which can be used as a template when making your own website
 
+To start editing source code for the desktop app, install the [.NET 8 SDK](https://dotnet.microsoft.com/en-us/download/dotnet/8.0), and then open `app/DiscordHistoryTracker.sln` in [Visual Studio](https://visualstudio.microsoft.com/downloads/) or [Rider](https://www.jetbrains.com/rider/).
+
 ### Building
 
-After you've done changes to the source code, you will need to build it. Before that, download and install:
-* (**required**) [Python 3](https://www.python.org/downloads)
-  * Use to run the build script
-* (optional) [Node + npm](https://nodejs.org/en) & command line [uglify-js](https://www.npmjs.com/package/uglify-js)
-  * Not required on Windows
-  * Only required for optional [JS minification](#Minification) on Linux/Mac
+To build a `Debug` version of the desktop app, there are no additional requirements.
 
-Now open the folder that contains `build.py` in a command line, and run `python build.py` to create a build with default settings. The following files will be created:
-* `bld/track.js` is the raw tracker script that can be pasted into a browser console
-* `bld/track.html` is the tracker script but sanitized for inclusion in HTML (see `web/index.php` for examples)
-* `bld/viewer.html` is the complete offline viewer
+To build a `Release` version of the desktop app, follow the instructions for your operating system.
 
-You can tweak the build process using the following flags:
-* `python build.py --nominify` to disable [minification](#Minification)
+#### Release – Windows (64-bit)
 
-### Minification
+1. Install [Python 3](https://www.python.org/downloads), and ensure the `python` executable is in your `PATH`
+2. Install [Powershell 5](https://docs.microsoft.com/en-us/powershell/scripting/install/installing-powershell-on-windows) or newer (on Windows 10, the included version of Powershell should be enough)
 
-The build process automatically minifies JS using `UglifyJS@3`, and CSS using a custom minifier.
+The `lib/` folder contains an installation of [Node](https://nodejs.org/en) and [uglify-js](https://www.npmjs.com/package/uglify-js), which are used to minify the tracking script. This installation will only work on 64-bit Windows; building on 32-bit Windows is not supported, but you can try.
 
-* If the `--nominify` flag is used, minification will be completely disabled
-* If `uglify-js` is not available from the command line, JS minification will be skipped
-  * When building on Windows 64-bit, the build script will use the included Node runner and packages
-  * When building on Windows 32-bit, you will need to download [Node 32-bit](https://nodejs.org/en/download) and replace the included one in `lib/`
-  * When building on Linux/Mac, the build script will attempt to find `uglifyjs` in the command line
+Run the `app/build.bat` script, and read the [Distribution](#distribution) section below.
+
+#### Release – Other Operating Systems
+
+1. Install [Python 3](https://www.python.org/downloads), and ensure the `python` executable exists and launches Python 3
+   - On Debian and derivatives, you can install `python-is-python3`
+   - On other distributions, you can create a link manually, for ex. `ln -s /usr/bin/python3 /usr/bin/python`
+   - If you don't want `python` to mean Python 3, then edit `Desktop.csproj` and change `python` to `python3`
+2. Install [Node + npm](https://nodejs.org/en)
+3. Install [uglify-js](https://www.npmjs.com/package/uglify-js) globally (`npm install -g uglify-js`)
+4. Install the `zip` package from your repository
+
+Run the `app/build.sh` script, and read the [Distribution](#distribution) section below.
+
+#### Distribution
+
+The mentioned build scripts will prepare `Release` builds ready for distribution. Once the script finishes, the `app/bin` folder will contain self-contained executables for each major operating system, and a portable version that works on all other systems but requires .NET 8 to be installed.
+
+Note that when building on Windows, the generated `.zip` files for Linux and Mac will not have correct file permissions, so it will not be possible to run them by double-clicking `DiscordHistoryTracker`. I tried using Python to re-create the archives with correct file permissions, but found that Linux `zip` tools could not see them. The only working solution is building the Windows + portable version on Windows, and Linux + Mac version on Linux.

app/.idea/.idea.DiscordHistoryTracker/.idea/avalonia.xml

@@ -4,18 +4,24 @@
     <option name="projectPerEditor">
       <map>
         <entry key="Desktop/App.axaml" value="Desktop/Desktop.csproj" />
-        <entry key="Desktop/Dialogs/CheckBoxDialog.axaml" value="Desktop/Desktop.csproj" />
-        <entry key="Desktop/Dialogs/MessageDialog.axaml" value="Desktop/Desktop.csproj" />
-        <entry key="Desktop/Dialogs/ProgressDialog.axaml" value="Desktop/Desktop.csproj" />
+        <entry key="Desktop/Dialogs/CheckBox/CheckBoxDialog.axaml" value="Desktop/Desktop.csproj" />
+        <entry key="Desktop/Dialogs/Message/MessageDialog.axaml" value="Desktop/Desktop.csproj" />
+        <entry key="Desktop/Dialogs/Progress/ProgressDialog.axaml" value="Desktop/Desktop.csproj" />
+        <entry key="Desktop/Dialogs/TextBox/TextBoxDialog.axaml" value="Desktop/Desktop.csproj" />
         <entry key="Desktop/Main/AboutWindow.axaml" value="Desktop/Desktop.csproj" />
-        <entry key="Desktop/Main/Controls/FilterPanel.axaml" value="Desktop/Desktop.csproj" />
+        <entry key="Desktop/Main/Controls/AttachmentFilterPanel.axaml" value="Desktop/Desktop.csproj" />
+        <entry key="Desktop/Main/Controls/MessageFilterPanel.axaml" value="Desktop/Desktop.csproj" />
+        <entry key="Desktop/Main/Controls/ServerConfigurationPanel.axaml" value="Desktop/Desktop.csproj" />
         <entry key="Desktop/Main/Controls/StatusBar.axaml" value="Desktop/Desktop.csproj" />
-        <entry key="Desktop/Main/MainContentScreen.axaml" value="Desktop/Desktop.csproj" />
         <entry key="Desktop/Main/MainWindow.axaml" value="Desktop/Desktop.csproj" />
+        <entry key="Desktop/Main/Pages/AdvancedPage.axaml" value="Desktop/Desktop.csproj" />
+        <entry key="Desktop/Main/Pages/AttachmentsPage.axaml" value="Desktop/Desktop.csproj" />
         <entry key="Desktop/Main/Pages/DatabasePage.axaml" value="Desktop/Desktop.csproj" />
+        <entry key="Desktop/Main/Pages/DebugPage.axaml" value="Desktop/Desktop.csproj" />
         <entry key="Desktop/Main/Pages/TrackingPage.axaml" value="Desktop/Desktop.csproj" />
         <entry key="Desktop/Main/Pages/ViewerPage.axaml" value="Desktop/Desktop.csproj" />
-        <entry key="Desktop/Main/WelcomeScreen.axaml" value="Desktop/Desktop.csproj" />
+        <entry key="Desktop/Main/Screens/MainContentScreen.axaml" value="Desktop/Desktop.csproj" />
+        <entry key="Desktop/Main/Screens/WelcomeScreen.axaml" value="Desktop/Desktop.csproj" />
       </map>
     </option>
   </component>

app/.idea/.idea.DiscordHistoryTracker/.idea/watcherTasks.xml

@@ -1,8 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ProjectTasksOptions">
-    <enabled-global>
-      <option value="UglifyJS (Tracker)" />
-    </enabled-global>
-  </component>
-</project>

app/Desktop/App.axaml

@@ -1,123 +1,134 @@
 <Application xmlns="https://github.com/avaloniaui"
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
              xmlns:common="clr-namespace:DHT.Desktop.Common"
+             xmlns:system="clr-namespace:System;assembly=System.Runtime"
              x:Class="DHT.Desktop.App">
 
     <Application.Styles>
 
-        <FluentTheme Mode="Light" />
+        <FluentTheme />
+        <StyleInclude Source="avares://Avalonia.Controls.DataGrid/Themes/Simple.xaml" />
+
+        <Style Selector="Button, CheckBox, RadioButton, Expander /template/ ToggleButton#ExpanderHeader">
+            <Setter Property="Cursor" Value="Hand" />
+        </Style>
 
         <Style Selector="Button">
             <Setter Property="Padding" Value="10 7 10 6" />
-            <Setter Property="Background" Value="#DDDDDD" />
-            <Setter Property="BorderBrush" Value="#999999" />
             <Setter Property="BorderThickness" Value="1" />
-            <Setter Property="CornerRadius" Value="0" />
             <Setter Property="HorizontalContentAlignment" Value="Center" />
             <Setter Property="VerticalContentAlignment" Value="Center" />
         </Style>
-        <Style Selector="Button /template/ ContentPresenter#PART_ContentPresenter">
-            <Setter Property="TextBlock.Foreground" Value="#060606" />
-            <Setter Property="Background" Value="#DDDDDD" />
-            <Setter Property="BorderBrush" Value="#999999" />
-        </Style>
-        <Style Selector="Button:pointerover /template/ ContentPresenter#PART_ContentPresenter">
-            <Setter Property="Background" Value="#E7E7E7" />
-            <Setter Property="BorderBrush" Value="#A2A2A2" />
-            <Setter Property="CornerRadius" Value="0" />
-        </Style>
         <Style Selector="Button:pressed">
             <Setter Property="RenderTransform" Value="none" />
         </Style>
-        <Style Selector="Button:pressed /template/ ContentPresenter#PART_ContentPresenter">
-            <Setter Property="Background" Value="#EBEBEB" />
-            <Setter Property="BorderBrush" Value="#A5A5A5" />
-            <Setter Property="CornerRadius" Value="0" />
-        </Style>
-        <Style Selector="Button:disabled /template/ ContentPresenter#PART_ContentPresenter">
-            <Setter Property="TextBlock.Foreground" Value="#7A7A7A" />
-            <Setter Property="Background" Value="#E9E9E9" />
-            <Setter Property="BorderBrush" Value="#BFBFBF" />
-        </Style>
 
         <Style Selector="TextBox">
-            <Setter Property="BorderBrush" Value="#999999" />
-            <Setter Property="BorderThickness" Value="1" />
-            <Setter Property="CornerRadius" Value="0" />
-            <Setter Property="SelectionBrush" Value="#72C0FF" />
-            <Setter Property="Background" Value="#F4F4F4" />
             <Setter Property="Padding" Value="6 0" />
             <Setter Property="VerticalContentAlignment" Value="Center" />
         </Style>
-        <Style Selector="TextBox:pointerover /template/ Border#PART_BorderElement">
-            <Setter Property="BorderBrush" Value="#999999" />
-            <Setter Property="Background" Value="#F8F8F8" />
-        </Style>
-        <Style Selector="TextBox:focus /template/ Border#PART_BorderElement">
-            <Setter Property="BorderBrush" Value="#546A9F" />
-            <Setter Property="BorderThickness" Value="1" />
-            <Setter Property="Background" Value="#FBFBFB" />
-        </Style>
-        <Style Selector="TextBox:disabled /template/ Border#PART_BorderElement">
-            <Setter Property="BorderBrush" Value="#999999" />
-            <Setter Property="Background" Value="#BBBBBB" />
-        </Style>
         <Style Selector="TextBox /template/ TextBlock#PART_Watermark">
             <Setter Property="VerticalAlignment" Value="Center" />
         </Style>
+        <Style Selector="TextBox:focus /template/ Border#PART_BorderElement">
+            <Setter Property="BorderThickness" Value="1" />
+        </Style>
+        <Style Selector="TextBox:error DataValidationErrors">
+            <Style.Resources>
+                <ControlTemplate x:Key="InlineDataValidationContentTemplate" TargetType="DataValidationErrors">
+                    <ContentPresenter Name="PART_ContentPresenter"
+                                      Padding="{TemplateBinding Padding}"
+                                      Background="{TemplateBinding Background}"
+                                      BorderThickness="{TemplateBinding BorderThickness}"
+                                      CornerRadius="{TemplateBinding CornerRadius}"
+                                      Content="{TemplateBinding Content}"
+                                      ContentTemplate="{TemplateBinding ContentTemplate}" />
+                </ControlTemplate>
+            </Style.Resources>
+            <Setter Property="Template" Value="{StaticResource InlineDataValidationContentTemplate}" />
+        </Style>
 
         <Style Selector="Expander">
-            <Setter Property="CornerRadius" Value="0" />
+            <Setter Property="MinHeight" Value="40" />
+            <Setter Property="HorizontalAlignment" Value="Stretch" />
         </Style>
-        <Style Selector="Expander /template/ ToggleButton#ExpanderHeader">
-            <Setter Property="HorizontalContentAlignment" Value="Left" />
-            <Setter Property="Template">
-                <ControlTemplate>
-                    <Border x:Name="ToggleButtonBackground">
-                        <Grid ColumnDefinitions="Auto,*" RowDefinitions="35">
-                            <Border x:Name="ExpandCollapseChevronBorder"
-                                    Grid.Column="0"
-                                    Width="35"
-                                    Height="35"
-                                    Margin="2,0"
-                                    RenderTransformOrigin="50%,50%">
-                                <Path x:Name="ExpandCollapseChevron"
-                                      HorizontalAlignment="Center"
-                                      VerticalAlignment="Center"
-                                      RenderTransformOrigin="50%,50%"
-                                      Stretch="None"
-                                      Stroke="{DynamicResource ExpanderChevronForeground}"
-                                      StrokeThickness="1" />
-                                <Border.RenderTransform>
-                                    <RotateTransform />
-                                </Border.RenderTransform>
-                            </Border>
-                            <ContentPresenter x:Name="PART_ContentPresenter"
-                                              Grid.Column="1"
-                                              Margin="0"
-                                              HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}"
-                                              VerticalContentAlignment="Center"
-                                              Background="Transparent"
-                                              BorderBrush="Transparent"
-                                              BorderThickness="0"
-                                              Content="{TemplateBinding Content}"
-                                              ContentTemplate="{TemplateBinding ContentTemplate}"
-                                              TextBlock.Foreground="{DynamicResource ExpanderForeground}" />
-                        </Grid>
-                    </Border>
-                </ControlTemplate>
-            </Setter>
-        </Style>
-
+        
     </Application.Styles>
 
     <Application.Resources>
 
         <common:NumberValueConverter x:Key="NumberValueConverter" />
+        <common:BytesValueConverter x:Key="BytesValueConverter" />
 
+        <system:Double x:Key="ControlContentThemeFontSize">14</system:Double>
+        <CornerRadius x:Key="ControlCornerRadius">0</CornerRadius>
+
+        <Color x:Key="SystemAccentColor">#3C5F95</Color>
+        <Color x:Key="SystemAccentColorDark1">#3C5F95</Color>
+        <Color x:Key="SystemAccentColorDark2">#3C5F95</Color>
+        <Color x:Key="SystemAccentColorDark3">#3C5F95</Color>
+        <Color x:Key="SystemAccentColorLight1">#3C5F95</Color>
+        <Color x:Key="SystemAccentColorLight2">#3C5F95</Color>
+        <Color x:Key="SystemAccentColorLight3">#3C5F95</Color>
+
+        <system:Double x:Key="ScrollBarSize">14</system:Double>
+        <TransformOperations x:Key="VerticalSmallScrollThumbScaleTransform">scaleX(0.5) translateX(-3px)</TransformOperations>
+        <TransformOperations x:Key="HorizontalSmallScrollThumbScaleTransform">scaleY(0.5) translateY(-3px)</TransformOperations>
+        <SolidColorBrush x:Key="ScrollBarPanningThumbBackground" Color="#8F8F8F" />
+
+        <SolidColorBrush x:Key="ButtonBorderBrush" Color="#3C5F95" />
+        <SolidColorBrush x:Key="ButtonBorderBrushPointerOver" Color="#0E2B59" />
+        <SolidColorBrush x:Key="ButtonBorderBrushPressed" Color="#061742" />
+        <SolidColorBrush x:Key="ButtonBorderBrushDisabled" Color="#9B9B9B" />
+        <SolidColorBrush x:Key="ButtonBackground" Color="#FFFFFF" />
+        <SolidColorBrush x:Key="ButtonBackgroundPointerOver" Color="#F6F9FD" />
+        <SolidColorBrush x:Key="ButtonBackgroundPressed" Color="#EDF3FD" />
+        <SolidColorBrush x:Key="ButtonBackgroundDisabled" Color="#FFFFFF" />
+        <SolidColorBrush x:Key="ButtonForeground" Color="#112961" />
+        <SolidColorBrush x:Key="ButtonForegroundPointerOver" Color="#050E41" />
+        <SolidColorBrush x:Key="ButtonForegroundPressed" Color="#010320" />
+        <SolidColorBrush x:Key="ButtonForegroundDisabled" Color="#8C8C8C" />
+
+        <SolidColorBrush x:Key="TextControlBorderBrush" Color="#515151" />
+        <SolidColorBrush x:Key="TextControlBorderBrushPointerOver" Color="#000000" />
+        <SolidColorBrush x:Key="TextControlBorderBrushFocused" Color="#3C5F95" />
+        <SolidColorBrush x:Key="TextControlBorderBrushDisabled" Color="#9B9B9B" />
+        <SolidColorBrush x:Key="TextControlBackground" Color="#FFFFFF" />
+        <SolidColorBrush x:Key="TextControlBackgroundPointerOver" Color="#FFFFFF" />
+        <SolidColorBrush x:Key="TextControlBackgroundFocused" Color="#F8FCFF" />
+        <SolidColorBrush x:Key="TextControlBackgroundDisabled" Color="#FFFFFF" />
+        <SolidColorBrush x:Key="TextControlForeground" Color="#000000" />
+        <SolidColorBrush x:Key="TextControlForegroundPointerOver" Color="#000000" />
+        <SolidColorBrush x:Key="TextControlForegroundFocused" Color="#000000" />
+        <SolidColorBrush x:Key="TextControlForegroundDisabled" Color="#8C8C8C" />
+        <SolidColorBrush x:Key="TextControlSelectionHighlightColor" Color="#DEE9F8" />
+        <SolidColorBrush x:Key="TextControlPlaceholderForeground" Color="#AAAAAA" />
+        <SolidColorBrush x:Key="TextControlPlaceholderForegroundPointerOver" Color="#AAAAAA" />
+        <SolidColorBrush x:Key="TextControlPlaceholderForegroundFocused" Color="#AAAAAA" />
+        <SolidColorBrush x:Key="TextControlPlaceholderForegroundDisabled" Color="#AAAAAA" />
+        
         <Thickness x:Key="ExpanderHeaderPadding">15,0</Thickness>
-        <Thickness x:Key="ExpanderContentPadding">15</Thickness>
-        <SolidColorBrush x:Key="ExpanderDropDownBackground" Color="#FCFCFC" />
+        <Thickness x:Key="ExpanderContentPadding">12</Thickness>
+        <SolidColorBrush x:Key="ExpanderHeaderBorderBrush" Color="#697DAB" />
+        <SolidColorBrush x:Key="ExpanderHeaderBorderBrushPointerOver" Color="#697DAB" />
+        <SolidColorBrush x:Key="ExpanderHeaderBorderBrushPressed" Color="#697DAB" />
+        <SolidColorBrush x:Key="ExpanderHeaderBorderBrushDisabled" Color="#697DAB" />
+        <SolidColorBrush x:Key="ExpanderHeaderBackground" Color="#697DAB" />
+        <SolidColorBrush x:Key="ExpanderHeaderBackgroundPointerOver" Color="#536794" />
+        <SolidColorBrush x:Key="ExpanderHeaderBackgroundPressed" Color="#47587F" />
+        <SolidColorBrush x:Key="ExpanderHeaderBackgroundDisabled" Color="#697DAB" />
+        <SolidColorBrush x:Key="ExpanderHeaderForeground" Color="#FFFFFF" />
+        <SolidColorBrush x:Key="ExpanderHeaderForegroundPointerOver" Color="#FFFFFF" />
+        <SolidColorBrush x:Key="ExpanderHeaderForegroundPressed" Color="#FFFFFF" />
+        <SolidColorBrush x:Key="ExpanderHeaderForegroundDisabled" Color="#FFFFFF" />
+        <SolidColorBrush x:Key="ExpanderChevronBackground" Color="Transparent" />
+        <SolidColorBrush x:Key="ExpanderChevronBackgroundPointerOver" Color="#536794" />
+        <SolidColorBrush x:Key="ExpanderChevronBackgroundPressed" Color="#47587F" />
+        <SolidColorBrush x:Key="ExpanderChevronBackgroundDisabled" Color="Transparent" />
+        <SolidColorBrush x:Key="ExpanderChevronForeground" Color="#FFFFFF" />
+        <SolidColorBrush x:Key="ExpanderChevronForegroundPointerOver" Color="#FFFFFF" />
+        <SolidColorBrush x:Key="ExpanderChevronForegroundPressed" Color="#FFFFFF" />
+        <SolidColorBrush x:Key="ExpanderChevronForegroundDisabled" Color="#FFFFFF" />
 
     </Application.Resources>
 

app/Desktop/App.axaml.cs

@@ -1,20 +1,21 @@
+using System;
 using Avalonia;
 using Avalonia.Controls.ApplicationLifetimes;
 using Avalonia.Markup.Xaml;
 using DHT.Desktop.Main;
 
-namespace DHT.Desktop {
-	public class App : Application {
-		public override void Initialize() {
-			AvaloniaXamlLoader.Load(this);
+namespace DHT.Desktop;
+
+sealed class App : Application {
+	public override void Initialize() {
+		AvaloniaXamlLoader.Load(this);
+	}
+
+	public override void OnFrameworkInitializationCompleted() {
+		if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop) {
+			desktop.MainWindow = new MainWindow(new Arguments(desktop.Args ?? Array.Empty<string>()));
 		}
 
-		public override void OnFrameworkInitializationCompleted() {
-			if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop) {
-				desktop.MainWindow = new MainWindow(new Arguments(desktop.Args));
-			}
-
-			base.OnFrameworkInitializationCompleted();
-		}
+		base.OnFrameworkInitializationCompleted();
 	}
 }

app/Desktop/Arguments.cs

@@ -1,49 +1,64 @@
 using System;
-using DHT.Server.Logging;
+using DHT.Utils.Logging;
 
-namespace DHT.Desktop {
-	public class Arguments {
-		public static Arguments Empty => new(Array.Empty<string>());
+namespace DHT.Desktop;
 
-		public string? DatabaseFile { get; }
-		public ushort? ServerPort { get; }
-		public string? ServerToken { get; }
+sealed class Arguments {
+	private static readonly Log Log = Log.ForType<Arguments>();
 
-		public Arguments(string[] args) {
-			for (int i = 0; i < args.Length; i++) {
-				string key = args[i];
+	public static Arguments Empty => new(Array.Empty<string>());
+
+	public string? DatabaseFile { get; }
+	public ushort? ServerPort { get; }
+	public string? ServerToken { get; }
+
+	public Arguments(string[] args) {
+		for (int i = 0; i < args.Length; i++) {
+			string key = args[i];
+
+			switch (key) {
+				case "-debug":
+					Log.IsDebugEnabled = true;
+					continue;
+			}
+
+			string value;
+
+			if (i == 0 && !key.StartsWith('-')) {
+				value = key;
+				key = "-db";
+			}
+			else if (i >= args.Length - 1) {
+				Log.Warn("Missing value for command line argument: " + key);
+				continue;
+			}
+			else {
+				value = args[++i];
+			}
+
+			switch (key) {
+				case "-db":
+					DatabaseFile = value;
+					continue;
+
+				case "-port": {
+					if (ushort.TryParse(value, out var port)) {
+						ServerPort = port;
+					}
+					else {
+						Log.Warn("Invalid port number: " + value);
+					}
 
-				if (i >= args.Length - 1) {
-					Log.Warn("Missing value for command line argument: " + key);
 					continue;
 				}
 
-				string value = args[++i];
+				case "-token":
+					ServerToken = value;
+					continue;
 
-				switch (key) {
-					case "-db":
-						DatabaseFile = value;
-						continue;
-
-					case "-port": {
-						if (ushort.TryParse(value, out var port)) {
-							ServerPort = port;
-						}
-						else {
-							Log.Warn("Invalid port number: " + value);
-						}
-
-						continue;
-					}
-
-					case "-token":
-						ServerToken = value;
-						continue;
-
-					default:
-						Log.Warn("Unknown command line argument: " + key);
-						break;
-				}
+				default:
+					Log.Warn("Unknown command line argument: " + key);
+					break;
 			}
 		}
 	}

app/Desktop/Common/BytesValueConverter.cs

@@ -0,0 +1,53 @@
+using System;
+using System.Globalization;
+using Avalonia.Data.Converters;
+
+namespace DHT.Desktop.Common;
+
+sealed class BytesValueConverter : IValueConverter {
+	private sealed class Unit {
+		private readonly string label;
+		private readonly string numberFormat;
+
+		public Unit(string label, int decimalPlaces) {
+			this.label = label;
+			this.numberFormat = "{0:n" + decimalPlaces + "}";
+		}
+
+		public string Format(double size) {
+			return string.Format(Program.Culture, numberFormat, size) + " " + label;
+		}
+	}
+
+	private static readonly Unit[] Units = {
+		new ("B", decimalPlaces: 0),
+		new ("kB", decimalPlaces: 0),
+		new ("MB", decimalPlaces: 1),
+		new ("GB", decimalPlaces: 1),
+		new ("TB", decimalPlaces: 1)
+	};
+
+	private const int Scale = 1000;
+
+	private static string Convert(ulong size) {
+		int power = size == 0L ? 0 : (int) Math.Log(size, Scale);
+		int unit = power >= Units.Length ? Units.Length - 1 : power;
+		return Units[unit].Format(unit == 0 ? size : size / Math.Pow(Scale, unit));
+	}
+
+	public object Convert(object? value, Type targetType, object? parameter, CultureInfo culture) {
+		if (value is long size and >= 0L) {
+			return Convert((ulong) size);
+		}
+		else if (value is ulong usize) {
+			return Convert(usize);
+		}
+		else {
+			return "-";
+		}
+	}
+
+	public object ConvertBack(object? value, Type targetType, object? parameter, CultureInfo culture) {
+		throw new NotSupportedException();
+	}
+}

app/Desktop/Common/DatabaseGui.cs

@@ -3,62 +3,66 @@ using System.Collections.Generic;
 using System.IO;
 using System.Threading.Tasks;
 using Avalonia.Controls;
-using DHT.Desktop.Dialogs;
+using Avalonia.Platform.Storage;
+using DHT.Desktop.Dialogs.File;
+using DHT.Desktop.Dialogs.Message;
 using DHT.Server.Database;
 using DHT.Server.Database.Exceptions;
 using DHT.Server.Database.Sqlite;
-using DHT.Server.Logging;
+using DHT.Utils.Logging;
 
-namespace DHT.Desktop.Common {
-	public static class DatabaseGui {
-		private const string DatabaseFileInitialName = "archive.dht";
+namespace DHT.Desktop.Common;
 
-		private static readonly List<FileDialogFilter> DatabaseFileDialogFilter = new() {
-			new FileDialogFilter {
-				Name = "Discord History Tracker Database",
-				Extensions = { "dht" }
-			}
-		};
+static class DatabaseGui {
+	private static readonly Log Log = Log.ForType(typeof(DatabaseGui));
 
-		public static OpenFileDialog NewOpenDatabaseFileDialog() {
-			return new OpenFileDialog {
-				Title = "Open Database File",
-				InitialFileName = DatabaseFileInitialName,
-				Filters = DatabaseFileDialogFilter
-			};
+	private const string DatabaseFileInitialName = "archive.dht";
+
+	private static readonly IReadOnlyList<FilePickerFileType> DatabaseFileDialogFilter = new List<FilePickerFileType> {
+		FileDialogs.CreateFilter("Discord History Tracker Database", new [] { "dht" })
+	};
+
+	public static async Task<string[]> NewOpenDatabaseFilesDialog(Window window, string? suggestedDirectory) {
+		return await window.StorageProvider.OpenFiles(new FilePickerOpenOptions {
+			Title = "Open Database File",
+			FileTypeFilter = DatabaseFileDialogFilter,
+			SuggestedStartLocation = await FileDialogs.GetSuggestedStartLocation(window, suggestedDirectory),
+			AllowMultiple = true
+		});
+	}
+
+	public static async Task<string?> NewOpenOrCreateDatabaseFileDialog(Window window, string? suggestedDirectory) {
+		return await window.StorageProvider.SaveFile(new FilePickerSaveOptions {
+			Title = "Open or Create Database File",
+			FileTypeChoices = DatabaseFileDialogFilter,
+			SuggestedFileName = DatabaseFileInitialName,
+			SuggestedStartLocation = await FileDialogs.GetSuggestedStartLocation(window, suggestedDirectory),
+			ShowOverwritePrompt = false
+		});
+	}
+
+	public static async Task<IDatabaseFile?> TryOpenOrCreateDatabaseFromPath(string path, Window window, Func<Task<bool>> checkCanUpgradeDatabase) {
+		IDatabaseFile? file = null;
+
+		try {
+			file = await SqliteDatabaseFile.OpenOrCreate(path, checkCanUpgradeDatabase);
+		} catch (InvalidDatabaseVersionException ex) {
+			await Dialog.ShowOk(window, "Database Error", "Database '" + Path.GetFileName(path) + "' appears to be corrupted (invalid version: " + ex.Version + ").");
+		} catch (DatabaseTooNewException ex) {
+			await Dialog.ShowOk(window, "Database Error", "Database '" + Path.GetFileName(path) + "' was opened in a newer version of DHT (database version " + ex.DatabaseVersion + ", app version " + ex.CurrentVersion + ").");
+		} catch (Exception ex) {
+			Log.Error(ex);
+			await Dialog.ShowOk(window, "Database Error", "Database '" + Path.GetFileName(path) + "' could not be opened:" + ex.Message);
 		}
 
-		public static SaveFileDialog NewOpenOrCreateDatabaseFileDialog() {
-			return new SaveFileDialog {
-				Title = "Open or Create Database File",
-				InitialFileName = DatabaseFileInitialName,
-				Filters = DatabaseFileDialogFilter
-			};
-		}
+		return file;
+	}
 
-		public static async Task<IDatabaseFile?> TryOpenOrCreateDatabaseFromPath(string path, Window window, Func<Task<bool>> checkCanUpgradeDatabase) {
-			IDatabaseFile? file = null;
+	public static async Task<DialogResult.YesNo> ShowCanUpgradeDatabaseDialog(Window window) {
+		return await Dialog.ShowYesNo(window, "Database Upgrade", "This database was created with an older version of DHT. If you proceed, the database will be upgraded and will no longer open in previous versions of DHT.\n\nPlease ensure you have a backup of the database. Do you want to proceed with the upgrade?");
+	}
 
-			try {
-				file = await SqliteDatabaseFile.OpenOrCreate(path, checkCanUpgradeDatabase);
-			} catch (InvalidDatabaseVersionException ex) {
-				await Dialog.ShowOk(window, "Database Error", "Database '" + Path.GetFileName(path) + "' appears to be corrupted (invalid version: " + ex.Version + ").");
-			} catch (DatabaseTooNewException ex) {
-				await Dialog.ShowOk(window, "Database Error", "Database '" + Path.GetFileName(path) + "' was opened in a newer version of DHT (database version " + ex.DatabaseVersion + ", app version " + ex.CurrentVersion + ").");
-			} catch (Exception ex) {
-				Log.Error(ex);
-				await Dialog.ShowOk(window, "Database Error", "Database '" + Path.GetFileName(path) + "' could not be opened:" + ex.Message);
-			}
-
-			return file;
-		}
-
-		public static async Task<DialogResult.YesNo> ShowCanUpgradeDatabaseDialog(Window window) {
-			return await Dialog.ShowYesNo(window, "Database Upgrade", "This database was created with an older version of DHT. If you proceed, the database will be upgraded and will no longer open in previous versions of DHT. Do you want to proceed with the upgrade?");
-		}
-
-		public static async Task<DialogResult.YesNo> ShowCanUpgradeMultipleDatabaseDialog(Window window) {
-			return await Dialog.ShowYesNo(window, "Database Upgrade", "One or more databases were created with an older version of DHT. If you proceed, these databases will be upgraded and will no longer open in previous versions of DHT. Otherwise, these databases will be skipped. Do you want to proceed with the upgrade?");
-		}
+	public static async Task<DialogResult.YesNo> ShowCanUpgradeMultipleDatabaseDialog(Window window) {
+		return await Dialog.ShowYesNo(window, "Database Upgrade", "One or more databases were created with an older version of DHT. If you proceed, these databases will be upgraded and will no longer open in previous versions of DHT. Otherwise, these databases will be skipped.\n\nPlease ensure you have a backup of the databases. Do you want to proceed with the upgrade?");
 	}
 }

app/Desktop/Common/NumberValueConverter.cs

@@ -2,14 +2,14 @@ using System;
 using System.Globalization;
 using Avalonia.Data.Converters;
 
-namespace DHT.Desktop.Common {
-	public class NumberValueConverter : IValueConverter {
-		public object Convert(object value, Type targetType, object parameter, CultureInfo culture) {
-			return string.Format(Program.Culture, "{0:n0}", value);
-		}
+namespace DHT.Desktop.Common;
 
-		public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) {
-			throw new NotSupportedException();
-		}
+sealed class NumberValueConverter : IValueConverter {
+	public object Convert(object? value, Type targetType, object? parameter, CultureInfo culture) {
+		return value == null ? "-" : string.Format(Program.Culture, "{0:n0}", value);
+	}
+
+	public object ConvertBack(object? value, Type targetType, object? parameter, CultureInfo culture) {
+		throw new NotSupportedException();
 	}
 }

app/Desktop/Common/TextFormat.cs

@@ -1,19 +1,19 @@
-namespace DHT.Desktop.Common {
-	public static class TextFormat {
-		public static string Format(this int number) {
-			return number.ToString("N0", Program.Culture);
-		}
+namespace DHT.Desktop.Common;
 
-		public static string Format(this long number) {
-			return number.ToString("N0", Program.Culture);
-		}
+static class TextFormat {
+	public static string Format(this int number) {
+		return number.ToString("N0", Program.Culture);
+	}
 
-		public static string Pluralize(this int number, string singular) {
-			return number.Format() + "\u00A0" + (number == 1 ? singular : singular + "s");
-		}
+	public static string Format(this long number) {
+		return number.ToString("N0", Program.Culture);
+	}
 
-		public static string Pluralize(this long number, string singular) {
-			return number.Format() + "\u00A0" + (number == 1 ? singular : singular + "s");
-		}
+	public static string Pluralize(this int number, string singular) {
+		return number.Format() + "\u00A0" + (number == 1 ? singular : singular + "s");
+	}
+
+	public static string Pluralize(this long number, string singular) {
+		return number.Format() + "\u00A0" + (number == 1 ? singular : singular + "s");
 	}
 }

app/Desktop/Desktop.csproj

@@ -1,8 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <OutputType>WinExe</OutputType>
-    <TargetFramework>net5.0</TargetFramework>
     <Nullable>enable</Nullable>
+    <AssemblyName>DiscordHistoryTracker</AssemblyName>
     <RootNamespace>DHT.Desktop</RootNamespace>
     <PackageId>DiscordHistoryTracker</PackageId>
     <Authors>chylex</Authors>
@@ -11,56 +11,69 @@
     <ApplicationIcon>./Resources/icon.ico</ApplicationIcon>
     <CheckForOverflowUnderflow>true</CheckForOverflowUnderflow>
     <SatelliteResourceLanguages>en</SatelliteResourceLanguages>
-    <AssemblyName>DiscordHistoryTracker</AssemblyName>
-    <Version>33.0.0.0</Version>
-    <AssemblyVersion>$(Version)</AssemblyVersion>
-    <FileVersion>$(Version)</FileVersion>
-    <PackageVersion>$(Version)</PackageVersion>
+    <GenerateAssemblyVersionAttribute>false</GenerateAssemblyVersionAttribute>
+    <GenerateAssemblyFileVersionAttribute>false</GenerateAssemblyFileVersionAttribute>
+    <GenerateAssemblyInformationalVersionAttribute>false</GenerateAssemblyInformationalVersionAttribute>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)' == 'Release' ">
     <DebugSymbols>true</DebugSymbols>
     <DebugType>none</DebugType>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="Avalonia" Version="0.10.10" />
-    <PackageReference Include="Avalonia.Desktop" Version="0.10.10" />
+    <PackageReference Include="Avalonia" Version="11.0.5" />
+    <PackageReference Include="Avalonia.Controls.DataGrid" Version="11.0.5" />
+    <PackageReference Include="Avalonia.Controls.ItemsRepeater" Version="11.0.5" />
+    <PackageReference Include="Avalonia.Desktop" Version="11.0.5" />
+    <PackageReference Include="Avalonia.Diagnostics" Version="11.0.5" Condition=" '$(Configuration)' == 'Debug' " />
+    <PackageReference Include="Avalonia.Fonts.Inter" Version="11.0.5" />
+    <PackageReference Include="Avalonia.Themes.Fluent" Version="11.0.5" />
+  </ItemGroup>
+  <ItemGroup>
     <ProjectReference Include="..\Server\Server.csproj" />
   </ItemGroup>
-  <ItemGroup Condition=" '$(Configuration)' == 'Debug' ">
-    <PackageReference Include="Avalonia.Diagnostics" Version="0.10.10" />
-  </ItemGroup>
   <ItemGroup>
-    <Compile Update="Windows\MainWindow.axaml.cs">
-      <DependentUpon>MainWindow.axaml</DependentUpon>
-      <SubType>Code</SubType>
-    </Compile>
-    <Compile Update="Dialogs\MessageDialog.axaml.cs">
-      <DependentUpon>MessageDialog.axaml</DependentUpon>
+    <Compile Include="..\Version.cs" Link="Version.cs" />
+    <Compile Update="Dialogs\TextBox\TextBoxDialog.axaml.cs">
+      <DependentUpon>CheckBoxDialog.axaml</DependentUpon>
       <SubType>Code</SubType>
     </Compile>
   </ItemGroup>
   <ItemGroup>
-    <UpToDateCheckInput Remove="Pages\DatabasePage.axaml" />
-    <UpToDateCheckInput Remove="Pages\TrackingPage.axaml" />
-    <UpToDateCheckInput Remove="Pages\ViewerPage.axaml" />
-  </ItemGroup>
-  <ItemGroup>
+    <AvaloniaResource Include="Resources/icon.ico" />
     <EmbeddedResource Include="../Resources/Tracker/bootstrap.js">
       <LogicalName>Tracker\%(RecursiveDir)%(Filename)%(Extension)</LogicalName>
       <Link>Resources/Tracker/%(RecursiveDir)%(Filename)%(Extension)</Link>
+      <Visible>false</Visible>
     </EmbeddedResource>
-    <EmbeddedResource Include="../Resources/Tracker/scripts.min/**">
+    <EmbeddedResource Include="../Resources/Tracker/scripts/**" Condition=" '$(Configuration)' == 'Debug' ">
       <LogicalName>Tracker\scripts\%(RecursiveDir)%(Filename)%(Extension)</LogicalName>
       <Link>Resources/Tracker/scripts/%(RecursiveDir)%(Filename)%(Extension)</Link>
+      <Visible>false</Visible>
     </EmbeddedResource>
     <EmbeddedResource Include="../Resources/Tracker/styles/**">
       <LogicalName>Tracker\styles\%(RecursiveDir)%(Filename)%(Extension)</LogicalName>
       <Link>Resources/Tracker/styles/%(RecursiveDir)%(Filename)%(Extension)</Link>
+      <Visible>false</Visible>
     </EmbeddedResource>
     <EmbeddedResource Include="../Resources/Viewer/**">
       <LogicalName>Viewer\%(RecursiveDir)%(Filename)%(Extension)</LogicalName>
       <Link>Resources/Viewer/%(RecursiveDir)%(Filename)%(Extension)</Link>
+      <Visible>false</Visible>
     </EmbeddedResource>
-    <AvaloniaResource Include="Resources/icon.ico" />
   </ItemGroup>
+  <Target Name="MinifyResources" BeforeTargets="PrepareForBuild" Condition=" '$(Configuration)' == 'Release' ">
+    <PropertyGroup>
+      <MinifiedResourceDir>$(ProjectDir)bin/.res/scripts</MinifiedResourceDir>
+    </PropertyGroup>
+    <ItemGroup>
+      <UpToDateCheckInput Include="$(ProjectDir)../Resources/Tracker/scripts/**" Visible="false" />
+      <EmbeddedResource Include="$(MinifiedResourceDir)/discord.js" LogicalName="Tracker\scripts\discord.js" Visible="false" />
+      <EmbeddedResource Include="$(MinifiedResourceDir)/dom.js" LogicalName="Tracker\scripts\dom.js" Visible="false" />
+      <EmbeddedResource Include="$(MinifiedResourceDir)/gui.js" LogicalName="Tracker\scripts\gui.js" Visible="false" />
+      <EmbeddedResource Include="$(MinifiedResourceDir)/settings.js" LogicalName="Tracker\scripts\settings.js" Visible="false" />
+      <EmbeddedResource Include="$(MinifiedResourceDir)/state.js" LogicalName="Tracker\scripts\state.js" Visible="false" />
+    </ItemGroup>
+    <RemoveDir Directories="$(ProjectDir)bin/.res/scripts" />
+    <Exec Command="python $(ProjectDir)../Resources/minify.py" WorkingDirectory="$(ProjectDir)../Resources" IgnoreExitCode="false" />
+  </Target>
 </Project>

app/Desktop/Dialogs/CheckBox/CheckBoxDialog.axaml

@@ -2,16 +2,16 @@
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
-        xmlns:dialogs="clr-namespace:DHT.Desktop.Dialogs"
+        xmlns:namespace="clr-namespace:DHT.Desktop.Dialogs.CheckBox"
         mc:Ignorable="d" d:DesignWidth="500"
-        x:Class="DHT.Desktop.Dialogs.CheckBoxDialog"
+        x:Class="DHT.Desktop.Dialogs.CheckBox.CheckBoxDialog"
         Title="{Binding Title}"
         Icon="avares://DiscordHistoryTracker/Resources/icon.ico"
         Width="500" SizeToContent="Height" CanResize="False"
         WindowStartupLocation="CenterOwner">
 
     <Window.DataContext>
-        <dialogs:CheckBoxDialogModel />
+        <namespace:CheckBoxDialogModel />
     </Window.DataContext>
 
     <Window.Styles>
@@ -34,8 +34,8 @@
 
     <StackPanel Margin="20">
         <ScrollViewer MaxHeight="400">
-            <ItemsControl Items="{Binding Items}">
-                <ItemsControl.ItemTemplate>
+            <ItemsRepeater ItemsSource="{Binding Items}">
+                <ItemsRepeater.ItemTemplate>
                     <DataTemplate>
                         <CheckBox IsChecked="{Binding Checked}">
                             <Label>
@@ -43,8 +43,8 @@
                             </Label>
                         </CheckBox>
                     </DataTemplate>
-                </ItemsControl.ItemTemplate>
-            </ItemsControl>
+                </ItemsRepeater.ItemTemplate>
+            </ItemsRepeater>
         </ScrollViewer>
         <Panel Classes="buttons">
             <WrapPanel Classes="left">

app/Desktop/Dialogs/CheckBox/CheckBoxDialog.axaml.cs

@@ -0,0 +1,21 @@
+using System.Diagnostics.CodeAnalysis;
+using Avalonia.Controls;
+using Avalonia.Interactivity;
+using DHT.Desktop.Dialogs.Message;
+
+namespace DHT.Desktop.Dialogs.CheckBox;
+
+[SuppressMessage("ReSharper", "MemberCanBeInternal")]
+public sealed partial class CheckBoxDialog : Window {
+	public CheckBoxDialog() {
+		InitializeComponent();
+	}
+
+	public void ClickOk(object? sender, RoutedEventArgs e) {
+		Close(DialogResult.OkCancel.Ok);
+	}
+
+	public void ClickCancel(object? sender, RoutedEventArgs e) {
+		Close(DialogResult.OkCancel.Cancel);
+	}
+}

app/Desktop/Dialogs/CheckBox/CheckBoxDialogModel.cs

@@ -0,0 +1,70 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using DHT.Utils.Models;
+
+namespace DHT.Desktop.Dialogs.CheckBox;
+
+class CheckBoxDialogModel : BaseModel {
+	public string Title { get; init; } = "";
+
+	private IReadOnlyList<CheckBoxItem> items = Array.Empty<CheckBoxItem>();
+
+	public IReadOnlyList<CheckBoxItem> Items {
+		get => items;
+
+		protected set {
+			foreach (var item in items) {
+				item.PropertyChanged -= OnItemPropertyChanged;
+			}
+
+			items = value;
+
+			foreach (var item in items) {
+				item.PropertyChanged += OnItemPropertyChanged;
+			}
+		}
+	}
+
+	private bool pauseCheckEvents = false;
+
+	public bool AreAllSelected => Items.All(static item => item.Checked);
+	public bool AreNoneSelected => Items.All(static item => !item.Checked);
+
+	public void SelectAll() => SetAllChecked(true);
+	public void SelectNone() => SetAllChecked(false);
+
+	private void SetAllChecked(bool isChecked) {
+		pauseCheckEvents = true;
+
+		foreach (var item in Items) {
+			item.Checked = isChecked;
+		}
+
+		pauseCheckEvents = false;
+		UpdateBulkButtons();
+	}
+
+	private void UpdateBulkButtons() {
+		OnPropertyChanged(nameof(AreAllSelected));
+		OnPropertyChanged(nameof(AreNoneSelected));
+	}
+
+	private void OnItemPropertyChanged(object? sender, PropertyChangedEventArgs e) {
+		if (!pauseCheckEvents && e.PropertyName == nameof(CheckBoxItem.Checked)) {
+			UpdateBulkButtons();
+		}
+	}
+}
+
+sealed class CheckBoxDialogModel<T> : CheckBoxDialogModel {
+	public new IReadOnlyList<CheckBoxItem<T>> Items { get; }
+
+	public IEnumerable<CheckBoxItem<T>> SelectedItems => Items.Where(static item => item.Checked);
+
+	public CheckBoxDialogModel(IEnumerable<CheckBoxItem<T>> items) {
+		this.Items = new List<CheckBoxItem<T>>(items);
+		base.Items = this.Items;
+	}
+}

app/Desktop/Dialogs/CheckBox/CheckBoxItem.cs

@@ -0,0 +1,24 @@
+using DHT.Utils.Models;
+
+namespace DHT.Desktop.Dialogs.CheckBox;
+
+class CheckBoxItem : BaseModel {
+	public string Title { get; init; } = "";
+	public object? Item { get; init; } = null;
+
+	private bool isChecked = false;
+
+	public bool Checked {
+		get => isChecked;
+		set => Change(ref isChecked, value);
+	}
+}
+
+sealed class CheckBoxItem<T> : CheckBoxItem {
+	public new T Item { get; }
+
+	public CheckBoxItem(T item) {
+		this.Item = item;
+		base.Item = item;
+	}
+}

app/Desktop/Dialogs/CheckBoxDialog.axaml.cs

@@ -1,28 +0,0 @@
-using Avalonia;
-using Avalonia.Controls;
-using Avalonia.Interactivity;
-using Avalonia.Markup.Xaml;
-
-namespace DHT.Desktop.Dialogs {
-	public class CheckBoxDialog : Window {
-		public CheckBoxDialog() {
-			InitializeComponent();
-			#if DEBUG
-			this.AttachDevTools();
-			#endif
-		}
-
-		private void InitializeComponent() {
-			AvaloniaXamlLoader.Load(this);
-		}
-
-		public void ClickOk(object? sender, RoutedEventArgs e) {
-			Close(DialogResult.OkCancel.Ok);
-		}
-
-		public void ClickCancel(object? sender, RoutedEventArgs e) {
-			Close(DialogResult.OkCancel.Cancel);
-		}
-	}
-}
-

app/Desktop/Dialogs/CheckBoxDialogModel.cs

@@ -1,70 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.ComponentModel;
-using System.Linq;
-using DHT.Desktop.Models;
-
-namespace DHT.Desktop.Dialogs {
-	public class CheckBoxDialogModel : BaseModel {
-		public string Title { get; init; } = "";
-
-		private IReadOnlyList<CheckBoxItem> items = Array.Empty<CheckBoxItem>();
-
-		public IReadOnlyList<CheckBoxItem> Items {
-			get => items;
-
-			protected set {
-				foreach (var item in items) {
-					item.PropertyChanged -= OnItemPropertyChanged;
-				}
-
-				items = value;
-
-				foreach (var item in items) {
-					item.PropertyChanged += OnItemPropertyChanged;
-				}
-			}
-		}
-
-		private bool pauseCheckEvents = false;
-
-		public bool AreAllSelected => Items.All(item => item.Checked);
-		public bool AreNoneSelected => Items.All(item => !item.Checked);
-
-		public void SelectAll() => SetAllChecked(true);
-		public void SelectNone() => SetAllChecked(false);
-
-		private void SetAllChecked(bool isChecked) {
-			pauseCheckEvents = true;
-
-			foreach (var item in Items) {
-				item.Checked = isChecked;
-			}
-
-			pauseCheckEvents = false;
-			UpdateBulkButtons();
-		}
-
-		private void UpdateBulkButtons() {
-			OnPropertyChanged(nameof(AreAllSelected));
-			OnPropertyChanged(nameof(AreNoneSelected));
-		}
-
-		private void OnItemPropertyChanged(object? sender, PropertyChangedEventArgs e) {
-			if (!pauseCheckEvents && e.PropertyName == nameof(CheckBoxItem.Checked)) {
-				UpdateBulkButtons();
-			}
-		}
-	}
-
-	public class CheckBoxDialogModel<T> : CheckBoxDialogModel {
-		public new IReadOnlyList<CheckBoxItem<T>> Items { get; }
-
-		public IEnumerable<CheckBoxItem<T>> SelectedItems => Items.Where(item => item.Checked);
-
-		public CheckBoxDialogModel(IEnumerable<CheckBoxItem<T>> items) {
-			this.Items = new List<CheckBoxItem<T>>(items);
-			base.Items = this.Items;
-		}
-	}
-}

app/Desktop/Dialogs/CheckBoxItem.cs

@@ -1,24 +0,0 @@
-using DHT.Desktop.Models;
-
-namespace DHT.Desktop.Dialogs {
-	public class CheckBoxItem : BaseModel {
-		public string Title { get; init; } = "";
-		public object? Item { get; init; } = null;
-
-		private bool isChecked = false;
-
-		public bool Checked {
-			get => isChecked;
-			set => Change(ref isChecked, value);
-		}
-	}
-
-	public class CheckBoxItem<T> : CheckBoxItem {
-		public new T Item { get; }
-
-		public CheckBoxItem(T item) {
-			this.Item = item;
-			base.Item = item;
-		}
-	}
-}

app/Desktop/Dialogs/Dialog.cs

@@ -1,74 +0,0 @@
-using System.Threading.Tasks;
-using Avalonia.Controls;
-using Avalonia.Threading;
-
-namespace DHT.Desktop.Dialogs {
-	public static class Dialog {
-		public static async Task ShowOk(Window owner, string title, string message) {
-			if (!Dispatcher.UIThread.CheckAccess()) {
-				await Dispatcher.UIThread.InvokeAsync(() => ShowOk(owner, title, message));
-				return;
-			}
-
-			await new MessageDialog {
-				DataContext = new MessageDialogModel {
-					Title = title,
-					Message = message,
-					IsOkVisible = true
-				}
-			}.ShowDialog<DialogResult.All>(owner);
-		}
-
-		public static async Task<DialogResult.OkCancel> ShowOkCancel(Window owner, string title, string message) {
-			if (!Dispatcher.UIThread.CheckAccess()) {
-				return await Dispatcher.UIThread.InvokeAsync(() => ShowOkCancel(owner, title, message));
-			}
-
-			var result = await new MessageDialog {
-				DataContext = new MessageDialogModel {
-					Title = title,
-					Message = message,
-					IsOkVisible = true,
-					IsCancelVisible = true
-				}
-			}.ShowDialog<DialogResult.All?>(owner);
-
-			return result.ToOkCancel();
-		}
-
-		public static async Task<DialogResult.YesNo> ShowYesNo(Window owner, string title, string message) {
-			if (!Dispatcher.UIThread.CheckAccess()) {
-				return await Dispatcher.UIThread.InvokeAsync(() => ShowYesNo(owner, title, message));
-			}
-
-			var result = await new MessageDialog {
-				DataContext = new MessageDialogModel {
-					Title = title,
-					Message = message,
-					IsYesVisible = true,
-					IsNoVisible = true
-				}
-			}.ShowDialog<DialogResult.All?>(owner);
-
-			return result.ToYesNo();
-		}
-
-		public static async Task<DialogResult.YesNoCancel> ShowYesNoCancel(Window owner, string title, string message) {
-			if (!Dispatcher.UIThread.CheckAccess()) {
-				return await Dispatcher.UIThread.InvokeAsync(() => ShowYesNoCancel(owner, title, message));
-			}
-
-			var result = await new MessageDialog {
-				DataContext = new MessageDialogModel {
-					Title = title,
-					Message = message,
-					IsYesVisible = true,
-					IsNoVisible = true,
-					IsCancelVisible = true
-				}
-			}.ShowDialog<DialogResult.All?>(owner);
-
-			return result.ToYesNoCancel();
-		}
-	}
-}

app/Desktop/Dialogs/DialogResult.cs

@@ -1,59 +0,0 @@
-using System;
-
-namespace DHT.Desktop.Dialogs {
-	public static class DialogResult {
-		public enum All {
-			Ok,
-			Yes,
-			No,
-			Cancel
-		}
-
-		public enum OkCancel {
-			Closed,
-			Ok,
-			Cancel
-		}
-
-		public enum YesNo {
-			Closed,
-			Yes,
-			No
-		}
-
-		public enum YesNoCancel {
-			Closed,
-			Yes,
-			No,
-			Cancel
-		}
-
-		public static OkCancel ToOkCancel(this All? result) {
-			return result switch {
-				null       => OkCancel.Closed,
-				All.Ok     => OkCancel.Ok,
-				All.Cancel => OkCancel.Cancel,
-				_          => throw new ArgumentException("Cannot convert dialog result " + result + " to ok/cancel.")
-			};
-		}
-
-		public static YesNo ToYesNo(this All? result) {
-			return result switch {
-				null    => YesNo.Closed,
-				All.Yes => YesNo.Yes,
-				All.No  => YesNo.No,
-				_       => throw new ArgumentException("Cannot convert dialog result " + result + " to yes/no.")
-			};
-		}
-
-		public static YesNoCancel ToYesNoCancel(this All? result) {
-			return result switch {
-				null       => YesNoCancel.Closed,
-				All.Yes    => YesNoCancel.Yes,
-				All.No     => YesNoCancel.No,
-				All.Cancel => YesNoCancel.Cancel,
-				_          => throw new ArgumentException("Cannot convert dialog result " + result + " to yes/no/cancel.")
-			};
-		}
-	}
-}

app/Desktop/Dialogs/File/FileDialogs.cs

@@ -0,0 +1,36 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using Avalonia.Controls;
+using Avalonia.Platform.Storage;
+
+namespace DHT.Desktop.Dialogs.File;
+
+static class FileDialogs {
+	public static async Task<string[]> OpenFiles(this IStorageProvider storageProvider, FilePickerOpenOptions options) {
+		return (await storageProvider.OpenFilePickerAsync(options)).ToLocalPaths();
+	}
+
+	public static async Task<string?> SaveFile(this IStorageProvider storageProvider, FilePickerSaveOptions options) {
+		return (await storageProvider.SaveFilePickerAsync(options))?.ToLocalPath();
+	}
+
+	public static FilePickerFileType CreateFilter(string name, string[] extensions) {
+		return new FilePickerFileType(name) {
+			Patterns = extensions.Select(static ext => "*." + ext).ToArray()
+		};
+	}
+
+	public static Task<IStorageFolder?> GetSuggestedStartLocation(Window window, string? suggestedDirectory) {
+		return suggestedDirectory == null ? Task.FromResult<IStorageFolder?>(null) : window.StorageProvider.TryGetFolderFromPathAsync(suggestedDirectory);
+	}
+
+	private static string ToLocalPath(this IStorageFile file) {
+		return file.TryGetLocalPath() ?? throw new NotSupportedException("Local filesystem is not supported.");
+	}
+
+	private static string[] ToLocalPaths(this IReadOnlyList<IStorageFile> files) {
+		return files.Select(ToLocalPath).ToArray();
+	}
+}

app/Desktop/Dialogs/IProgressCallback.cs

@@ -1,7 +0,0 @@
-using System.Threading.Tasks;
-
-namespace DHT.Desktop.Dialogs {
-	public interface IProgressCallback {
-		Task Update(string message, int finishedItems, int totalItems);
-	}
-}

app/Desktop/Dialogs/Message/Dialog.cs

@@ -0,0 +1,74 @@
+using System.Threading.Tasks;
+using Avalonia.Controls;
+using Avalonia.Threading;
+
+namespace DHT.Desktop.Dialogs.Message;
+
+static class Dialog {
+	public static async Task ShowOk(Window owner, string title, string message) {
+		if (!Dispatcher.UIThread.CheckAccess()) {
+			await Dispatcher.UIThread.InvokeAsync(() => ShowOk(owner, title, message));
+			return;
+		}
+
+		await new MessageDialog {
+			DataContext = new MessageDialogModel {
+				Title = title,
+				Message = message,
+				IsOkVisible = true
+			}
+		}.ShowDialog<DialogResult.All>(owner);
+	}
+
+	public static async Task<DialogResult.OkCancel> ShowOkCancel(Window owner, string title, string message) {
+		if (!Dispatcher.UIThread.CheckAccess()) {
+			return await Dispatcher.UIThread.InvokeAsync(() => ShowOkCancel(owner, title, message));
+		}
+
+		var result = await new MessageDialog {
+			DataContext = new MessageDialogModel {
+				Title = title,
+				Message = message,
+				IsOkVisible = true,
+				IsCancelVisible = true
+			}
+		}.ShowDialog<DialogResult.All?>(owner);
+
+		return result.ToOkCancel();
+	}
+
+	public static async Task<DialogResult.YesNo> ShowYesNo(Window owner, string title, string message) {
+		if (!Dispatcher.UIThread.CheckAccess()) {
+			return await Dispatcher.UIThread.InvokeAsync(() => ShowYesNo(owner, title, message));
+		}
+
+		var result = await new MessageDialog {
+			DataContext = new MessageDialogModel {
+				Title = title,
+				Message = message,
+				IsYesVisible = true,
+				IsNoVisible = true
+			}
+		}.ShowDialog<DialogResult.All?>(owner);
+
+		return result.ToYesNo();
+	}
+
+	public static async Task<DialogResult.YesNoCancel> ShowYesNoCancel(Window owner, string title, string message) {
+		if (!Dispatcher.UIThread.CheckAccess()) {
+			return await Dispatcher.UIThread.InvokeAsync(() => ShowYesNoCancel(owner, title, message));
+		}
+
+		var result = await new MessageDialog {
+			DataContext = new MessageDialogModel {
+				Title = title,
+				Message = message,
+				IsYesVisible = true,
+				IsNoVisible = true,
+				IsCancelVisible = true
+			}
+		}.ShowDialog<DialogResult.All?>(owner);
+
+		return result.ToYesNoCancel();
+	}
+}

app/Desktop/Dialogs/Message/DialogResult.cs

@@ -0,0 +1,59 @@
+using System;
+
+namespace DHT.Desktop.Dialogs.Message;
+
+static class DialogResult {
+	public enum All {
+		Ok,
+		Yes,
+		No,
+		Cancel
+	}
+
+	public enum OkCancel {
+		Closed,
+		Ok,
+		Cancel
+	}
+
+	public enum YesNo {
+		Closed,
+		Yes,
+		No
+	}
+
+	public enum YesNoCancel {
+		Closed,
+		Yes,
+		No,
+		Cancel
+	}
+
+	public static OkCancel ToOkCancel(this All? result) {
+		return result switch {
+			null       => OkCancel.Closed,
+			All.Ok     => OkCancel.Ok,
+			All.Cancel => OkCancel.Cancel,
+			_          => throw new ArgumentException("Cannot convert dialog result " + result + " to ok/cancel.")
+		};
+	}
+
+	public static YesNo ToYesNo(this All? result) {
+		return result switch {
+			null    => YesNo.Closed,
+			All.Yes => YesNo.Yes,
+			All.No  => YesNo.No,
+			_       => throw new ArgumentException("Cannot convert dialog result " + result + " to yes/no.")
+		};
+	}
+
+	public static YesNoCancel ToYesNoCancel(this All? result) {
+		return result switch {
+			null       => YesNoCancel.Closed,
+			All.Yes    => YesNoCancel.Yes,
+			All.No     => YesNoCancel.No,
+			All.Cancel => YesNoCancel.Cancel,
+			_          => throw new ArgumentException("Cannot convert dialog result " + result + " to yes/no/cancel.")
+		};
+	}
+}

app/Desktop/Dialogs/Message/MessageDialog.axaml

@@ -2,16 +2,16 @@
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
-        xmlns:dialogs="clr-namespace:DHT.Desktop.Dialogs"
+        xmlns:namespace="clr-namespace:DHT.Desktop.Dialogs.Message"
         mc:Ignorable="d" d:DesignWidth="500"
-        x:Class="DHT.Desktop.Dialogs.MessageDialog"
+        x:Class="DHT.Desktop.Dialogs.Message.MessageDialog"
         Title="{Binding Title}"
         Icon="avares://DiscordHistoryTracker/Resources/icon.ico"
         Width="500" SizeToContent="Height" CanResize="False"
         WindowStartupLocation="CenterOwner">
 
     <Window.DataContext>
-        <dialogs:MessageDialogModel />
+        <namespace:MessageDialogModel />
     </Window.DataContext>
 
     <Window.Styles>

app/Desktop/Dialogs/Message/MessageDialog.axaml.cs

@@ -0,0 +1,28 @@
+using System.Diagnostics.CodeAnalysis;
+using Avalonia.Controls;
+using Avalonia.Interactivity;
+
+namespace DHT.Desktop.Dialogs.Message;
+
+[SuppressMessage("ReSharper", "MemberCanBeInternal")]
+public sealed partial class MessageDialog : Window {
+	public MessageDialog() {
+		InitializeComponent();
+	}
+
+	public void ClickOk(object? sender, RoutedEventArgs e) {
+		Close(DialogResult.All.Ok);
+	}
+
+	public void ClickYes(object? sender, RoutedEventArgs e) {
+		Close(DialogResult.All.Yes);
+	}
+
+	public void ClickNo(object? sender, RoutedEventArgs e) {
+		Close(DialogResult.All.No);
+	}
+
+	public void ClickCancel(object? sender, RoutedEventArgs e) {
+		Close(DialogResult.All.Cancel);
+	}
+}

app/Desktop/Dialogs/Message/MessageDialogModel.cs

@@ -0,0 +1,11 @@
+namespace DHT.Desktop.Dialogs.Message;
+
+sealed class MessageDialogModel {
+	public string Title { get; init; } = "";
+	public string Message { get; init; } = "";
+
+	public bool IsOkVisible { get; init; } = false;
+	public bool IsYesVisible { get; init; } = false;
+	public bool IsNoVisible { get; init; } = false;
+	public bool IsCancelVisible { get; init; } = false;
+}

app/Desktop/Dialogs/MessageDialog.axaml.cs

@@ -1,35 +0,0 @@
-using Avalonia;
-using Avalonia.Controls;
-using Avalonia.Interactivity;
-using Avalonia.Markup.Xaml;
-
-namespace DHT.Desktop.Dialogs {
-	public class MessageDialog : Window {
-		public MessageDialog() {
-			InitializeComponent();
-			#if DEBUG
-			this.AttachDevTools();
-			#endif
-		}
-
-		private void InitializeComponent() {
-			AvaloniaXamlLoader.Load(this);
-		}
-
-		public void ClickOk(object? sender, RoutedEventArgs e) {
-			Close(DialogResult.All.Ok);
-		}
-
-		public void ClickYes(object? sender, RoutedEventArgs e) {
-			Close(DialogResult.All.Yes);
-		}
-
-		public void ClickNo(object? sender, RoutedEventArgs e) {
-			Close(DialogResult.All.No);
-		}
-
-		public void ClickCancel(object? sender, RoutedEventArgs e) {
-			Close(DialogResult.All.Cancel);
-		}
-	}
-}

app/Desktop/Dialogs/MessageDialogModel.cs

@@ -1,11 +0,0 @@
-namespace DHT.Desktop.Dialogs {
-	public class MessageDialogModel {
-		public string Title { get; init; } = "";
-		public string Message { get; init; } = "";
-
-		public bool IsOkVisible { get; init; } = false;
-		public bool IsYesVisible { get; init; } = false;
-		public bool IsNoVisible { get; init; } = false;
-		public bool IsCancelVisible { get; init; } = false;
-	}
-}

app/Desktop/Dialogs/Progress/IProgressCallback.cs

@@ -0,0 +1,7 @@
+using System.Threading.Tasks;
+
+namespace DHT.Desktop.Dialogs.Progress;
+
+interface IProgressCallback {
+	Task Update(string message, int finishedItems, int totalItems);
+}

app/Desktop/Dialogs/Progress/ProgressDialog.axaml

@@ -2,18 +2,18 @@
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
-        xmlns:dialogs="clr-namespace:DHT.Desktop.Dialogs"
+        xmlns:namespace="clr-namespace:DHT.Desktop.Dialogs.Progress"
         mc:Ignorable="d" d:DesignWidth="500"
-        x:Class="DHT.Desktop.Dialogs.ProgressDialog"
+        x:Class="DHT.Desktop.Dialogs.Progress.ProgressDialog"
         Title="{Binding Title}"
         Icon="avares://DiscordHistoryTracker/Resources/icon.ico"
-        Opened="Loaded"
+        Opened="OnOpened"
         Closing="OnClosing"
         Width="500" SizeToContent="Height" CanResize="False"
         WindowStartupLocation="CenterOwner">
 
     <Window.DataContext>
-        <dialogs:ProgressDialogModel />
+        <namespace:ProgressDialogModel />
     </Window.DataContext>
 
     <Window.Styles>

app/Desktop/Dialogs/Progress/ProgressDialog.axaml.cs

@@ -0,0 +1,30 @@
+using System;
+using System.Diagnostics.CodeAnalysis;
+using System.Threading.Tasks;
+using Avalonia.Controls;
+
+namespace DHT.Desktop.Dialogs.Progress;
+
+[SuppressMessage("ReSharper", "MemberCanBeInternal")]
+public sealed partial class ProgressDialog : Window {
+	private bool isFinished = false;
+
+	public ProgressDialog() {
+		InitializeComponent();
+	}
+
+	public void OnOpened(object? sender, EventArgs e) {
+		if (DataContext is ProgressDialogModel model) {
+			Task.Run(model.StartTask).ContinueWith(OnFinished, TaskScheduler.FromCurrentSynchronizationContext());
+		}
+	}
+
+	public void OnClosing(object? sender, WindowClosingEventArgs e) {
+		e.Cancel = !isFinished;
+	}
+
+	private void OnFinished(Task task) {
+		isFinished = true;
+		Close();
+	}
+}

app/Desktop/Dialogs/Progress/ProgressDialogModel.cs

@@ -0,0 +1,65 @@
+using System;
+using System.Threading.Tasks;
+using Avalonia.Threading;
+using DHT.Desktop.Common;
+using DHT.Utils.Models;
+
+namespace DHT.Desktop.Dialogs.Progress;
+
+sealed class ProgressDialogModel : BaseModel {
+	public string Title { get; init; } = "";
+
+	private string message = "";
+
+	public string Message {
+		get => message;
+		private set => Change(ref message, value);
+	}
+
+	private string items = "";
+
+	public string Items {
+		get => items;
+		private set => Change(ref items, value);
+	}
+
+	private int progress = 0;
+
+	public int Progress {
+		get => progress;
+		private set => Change(ref progress, value);
+	}
+
+	private readonly TaskRunner? task;
+
+	[Obsolete("Designer")]
+	public ProgressDialogModel() {}
+
+	public ProgressDialogModel(TaskRunner task) {
+		this.task = task;
+	}
+
+	internal async Task StartTask() {
+		if (task != null) {
+			await task(new Callback(this));
+		}
+	}
+
+	public delegate Task TaskRunner(IProgressCallback callback);
+
+	private sealed class Callback : IProgressCallback {
+		private readonly ProgressDialogModel model;
+
+		public Callback(ProgressDialogModel model) {
+			this.model = model;
+		}
+
+		async Task IProgressCallback.Update(string message, int finishedItems, int totalItems) {
+			await Dispatcher.UIThread.InvokeAsync(() => {
+				model.Message = message;
+				model.Items = finishedItems.Format() + " / " + totalItems.Format();
+				model.Progress = 100 * finishedItems / totalItems;
+			});
+		}
+	}
+}

app/Desktop/Dialogs/ProgressDialog.axaml.cs

@@ -1,38 +0,0 @@
-using System;
-using System.ComponentModel;
-using System.Threading.Tasks;
-using Avalonia;
-using Avalonia.Controls;
-using Avalonia.Markup.Xaml;
-
-namespace DHT.Desktop.Dialogs {
-	public class ProgressDialog : Window {
-		private bool isFinished = false;
-
-		public ProgressDialog() {
-			InitializeComponent();
-			#if DEBUG
-			this.AttachDevTools();
-			#endif
-		}
-
-		private void InitializeComponent() {
-			AvaloniaXamlLoader.Load(this);
-		}
-
-		public void OnClosing(object? sender, CancelEventArgs e) {
-			e.Cancel = !isFinished;
-		}
-
-		public void Loaded(object? sender, EventArgs e) {
-			if (DataContext is ProgressDialogModel model) {
-				Task.Run(model.StartTask).ContinueWith(OnFinished, TaskScheduler.FromCurrentSynchronizationContext());
-			}
-		}
-
-		private void OnFinished(Task task) {
-			isFinished = true;
-			Close();
-		}
-	}
-}

app/Desktop/Dialogs/ProgressDialogModel.cs

@@ -1,65 +0,0 @@
-using System;
-using System.Threading.Tasks;
-using Avalonia.Threading;
-using DHT.Desktop.Common;
-using DHT.Desktop.Models;
-
-namespace DHT.Desktop.Dialogs {
-	public class ProgressDialogModel : BaseModel {
-		public string Title { get; init; } = "";
-
-		private string message = "";
-
-		public string Message {
-			get => message;
-			private set => Change(ref message, value);
-		}
-
-		private string items = "";
-
-		public string Items {
-			get => items;
-			private set => Change(ref items, value);
-		}
-
-		private int progress = 0;
-
-		public int Progress {
-			get => progress;
-			private set => Change(ref progress, value);
-		}
-
-		private readonly TaskRunner? task;
-
-		[Obsolete("Designer")]
-		public ProgressDialogModel() {}
-
-		public ProgressDialogModel(TaskRunner task) {
-			this.task = task;
-		}
-
-		internal async Task StartTask() {
-			if (task != null) {
-				await task(new Callback(this));
-			}
-		}
-
-		public delegate Task TaskRunner(IProgressCallback callback);
-
-		private class Callback : IProgressCallback {
-			private readonly ProgressDialogModel model;
-
-			public Callback(ProgressDialogModel model) {
-				this.model = model;
-			}
-
-			async Task IProgressCallback.Update(string message, int finishedItems, int totalItems) {
-				await Dispatcher.UIThread.InvokeAsync(() => {
-					model.Message = message;
-					model.Items = finishedItems.Format() + " / " + totalItems.Format();
-					model.Progress = 100 * finishedItems / totalItems;
-				});
-			}
-		}
-	}
-}

app/Desktop/Dialogs/TextBox/TextBoxDialog.axaml

@@ -0,0 +1,56 @@
+<Window xmlns="https://github.com/avaloniaui"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:namespace="clr-namespace:DHT.Desktop.Dialogs.TextBox"
+        mc:Ignorable="d" d:DesignWidth="500"
+        x:Class="DHT.Desktop.Dialogs.TextBox.TextBoxDialog"
+        Title="{Binding Title}"
+        Icon="avares://DiscordHistoryTracker/Resources/icon.ico"
+        Width="500" SizeToContent="Height" CanResize="False"
+        WindowStartupLocation="CenterOwner">
+
+    <Window.DataContext>
+        <namespace:TextBoxDialogModel />
+    </Window.DataContext>
+
+    <Window.Styles>
+        <Style Selector="Panel.buttons">
+            <Setter Property="Margin" Value="0 20 0 0" />
+        </Style>
+        <Style Selector="Panel.buttons > WrapPanel.right">
+            <Setter Property="HorizontalAlignment" Value="Right" />
+        </Style>
+        <Style Selector="Panel.buttons Button">
+            <Setter Property="MinWidth" Value="80" />
+            <Setter Property="Margin" Value="8 0 0 0" />
+        </Style>
+    </Window.Styles>
+
+    <StackPanel Margin="20">
+        <ScrollViewer MaxHeight="400">
+            <StackPanel Spacing="10">
+                <TextBlock Text="{Binding Description}" TextWrapping="Wrap" />
+                <ItemsRepeater ItemsSource="{Binding Items}">
+                    <ItemsRepeater.ItemTemplate>
+                        <DataTemplate>
+                            <DockPanel Margin="0 5 25 0">
+                                <TextBox Name="Input" Text="{Binding Value}" Width="180" VerticalAlignment="Top" DockPanel.Dock="Right" />
+                                <Label Target="Input" VerticalAlignment="Center" DockPanel.Dock="Left">
+                                    <TextBlock Text="{Binding Title}" TextWrapping="Wrap" />
+                                </Label>
+                            </DockPanel>
+                        </DataTemplate>
+                    </ItemsRepeater.ItemTemplate>
+                </ItemsRepeater>
+            </StackPanel>
+        </ScrollViewer>
+        <Panel Classes="buttons">
+            <WrapPanel Classes="right">
+                <Button Click="ClickOk" IsEnabled="{Binding !HasErrors}">OK</Button>
+                <Button Click="ClickCancel">Cancel</Button>
+            </WrapPanel>
+        </Panel>
+    </StackPanel>
+
+</Window>

app/Desktop/Dialogs/TextBox/TextBoxDialog.axaml.cs

@@ -0,0 +1,21 @@
+using System.Diagnostics.CodeAnalysis;
+using Avalonia.Controls;
+using Avalonia.Interactivity;
+using DHT.Desktop.Dialogs.Message;
+
+namespace DHT.Desktop.Dialogs.TextBox; 
+
+[SuppressMessage("ReSharper", "MemberCanBeInternal")]
+public sealed partial class TextBoxDialog : Window {
+	public TextBoxDialog() {
+		InitializeComponent();
+	}
+
+	public void ClickOk(object? sender, RoutedEventArgs e) {
+		Close(DialogResult.OkCancel.Ok);
+	}
+
+	public void ClickCancel(object? sender, RoutedEventArgs e) {
+		Close(DialogResult.OkCancel.Cancel);
+	}
+}

app/Desktop/Dialogs/TextBox/TextBoxDialogModel.cs

@@ -0,0 +1,47 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using DHT.Utils.Models;
+
+namespace DHT.Desktop.Dialogs.TextBox; 
+
+class TextBoxDialogModel : BaseModel {
+	public string Title { get; init; } = "";
+	public string Description { get; init; } = "";
+
+	private IReadOnlyList<TextBoxItem> items = Array.Empty<TextBoxItem>();
+
+	public IReadOnlyList<TextBoxItem> Items {
+		get => items;
+
+		protected set {
+			foreach (var item in items) {
+				item.ErrorsChanged -= OnItemErrorsChanged;
+			}
+
+			items = value;
+
+			foreach (var item in items) {
+				item.ErrorsChanged += OnItemErrorsChanged;
+			}
+		}
+	}
+		
+	public bool HasErrors => Items.Any(static item => !item.IsValid);
+
+	private void OnItemErrorsChanged(object? sender, DataErrorsChangedEventArgs e) {
+		OnPropertyChanged(nameof(HasErrors));
+	}
+}
+
+sealed class TextBoxDialogModel<T> : TextBoxDialogModel {
+	public new IReadOnlyList<TextBoxItem<T>> Items { get; }
+
+	public IEnumerable<TextBoxItem<T>> ValidItems => Items.Where(static item => item.IsValid);
+
+	public TextBoxDialogModel(IEnumerable<TextBoxItem<T>> items) {
+		this.Items = new List<TextBoxItem<T>>(items);
+		base.Items = this.Items;
+	}
+}

app/Desktop/Dialogs/TextBox/TextBoxItem.cs

@@ -0,0 +1,42 @@
+using System;
+using System.Collections;
+using System.ComponentModel;
+using DHT.Utils.Models;
+
+namespace DHT.Desktop.Dialogs.TextBox; 
+
+class TextBoxItem : BaseModel, INotifyDataErrorInfo {
+	public string Title { get; init; } = "";
+	public object? Item { get; init; } = null;
+		
+	public Func<string, bool> ValidityCheck { get; init; } = static _ => true;
+	public bool IsValid => ValidityCheck(Value);
+
+	private string value = string.Empty;
+
+	public string Value {
+		get => this.value;
+		set {
+			Change(ref this.value, value);
+			ErrorsChanged?.Invoke(this, new DataErrorsChangedEventArgs(nameof(Value)));
+		}
+	}
+
+	public IEnumerable GetErrors(string? propertyName) {
+		if (propertyName == nameof(Value) && !IsValid) {
+			yield return string.Empty;
+		}
+	}
+
+	public bool HasErrors => !IsValid;
+	public event EventHandler<DataErrorsChangedEventArgs>? ErrorsChanged;
+}
+
+sealed class TextBoxItem<T> : TextBoxItem {
+	public new T Item { get; }
+
+	public TextBoxItem(T item) {
+		this.Item = item;
+		base.Item = item;
+	}
+}

app/Desktop/Discord/DiscordAppSettings.cs

@@ -0,0 +1,121 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
+using System.IO;
+using System.Runtime.InteropServices;
+using System.Text.Json;
+using System.Threading.Tasks;
+using DHT.Utils.Logging;
+using static System.Environment.SpecialFolder;
+using static System.Environment.SpecialFolderOption;
+
+namespace DHT.Desktop.Discord;
+
+static class DiscordAppSettings {
+	private static readonly Log Log = Log.ForType(typeof(DiscordAppSettings));
+
+	private const string JsonKeyDevTools = "DANGEROUS_ENABLE_DEVTOOLS_ONLY_ENABLE_IF_YOU_KNOW_WHAT_YOURE_DOING";
+
+	public static string JsonFilePath { get; }
+	private static string JsonBackupFilePath { get; }
+
+	[SuppressMessage("ReSharper", "ConvertIfStatementToConditionalTernaryExpression")]
+	static DiscordAppSettings() {
+		string rootFolder;
+
+		if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows)) {
+			rootFolder = Path.Combine(Environment.GetFolderPath(ApplicationData, DoNotVerify), "Discord");
+		}
+		else if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX)) {
+			rootFolder = Path.Combine(Environment.GetFolderPath(UserProfile, DoNotVerify), "Library", "Application Support", "Discord");
+		}
+		else {
+			rootFolder = Path.Combine(Environment.GetFolderPath(ApplicationData, DoNotVerify), "discord");
+		}
+
+		JsonFilePath = Path.Combine(rootFolder, "settings.json");
+		JsonBackupFilePath = JsonFilePath + ".bak";
+	}
+
+	public static async Task<bool?> AreDevToolsEnabled() {
+		try {
+			return AreDevToolsEnabled(await ReadSettingsJson());
+		} catch (Exception e) {
+			Log.Error("Cannot read settings file.");
+			Log.Error(e);
+			return null;
+		}
+	}
+
+	private static bool AreDevToolsEnabled(Dictionary<string, object?> json) {
+		return json.TryGetValue(JsonKeyDevTools, out var value) && value is JsonElement { ValueKind: JsonValueKind.True };
+	}
+
+	public static async Task<SettingsJsonResult> ConfigureDevTools(bool enable) {
+		Dictionary<string, object?> json;
+
+		try {
+			json = await ReadSettingsJson();
+		} catch (FileNotFoundException) {
+			return SettingsJsonResult.FileNotFound;
+		} catch (JsonException) {
+			return SettingsJsonResult.InvalidJson;
+		} catch (Exception e) {
+			Log.Error(e);
+			return SettingsJsonResult.ReadError;
+		}
+
+		if (enable == AreDevToolsEnabled(json)) {
+			return SettingsJsonResult.AlreadySet;
+		}
+
+		if (enable) {
+			json[JsonKeyDevTools] = true;
+		}
+		else {
+			json.Remove(JsonKeyDevTools);
+		}
+
+		try {
+			if (!File.Exists(JsonBackupFilePath)) {
+				File.Copy(JsonFilePath, JsonBackupFilePath);
+			}
+
+			await WriteSettingsJson(json);
+		} catch (Exception e) {
+			Log.Error("An error occurred when writing settings file.");
+			Log.Error(e);
+
+			if (File.Exists(JsonBackupFilePath)) {
+				try {
+					File.Move(JsonBackupFilePath, JsonFilePath, true);
+					Log.Info("Restored settings file from backup.");
+				} catch (Exception e2) {
+					Log.Error("Cannot restore settings file from backup.");
+					Log.Error(e2);
+				}
+			}
+
+			return SettingsJsonResult.WriteError;
+		}
+
+		try {
+			File.Delete(JsonBackupFilePath);
+		} catch (Exception e) {
+			Log.Error("Cannot delete backup file.");
+			Log.Error(e);
+		}
+
+		return SettingsJsonResult.Success;
+	}
+
+	private static async Task<Dictionary<string, object?>> ReadSettingsJson() {
+		await using var stream = new FileStream(JsonFilePath, FileMode.Open, FileAccess.Read, FileShare.Read);
+		return await JsonSerializer.DeserializeAsync<Dictionary<string, object?>?>(stream) ?? throw new JsonException();
+	}
+
+	private static async Task WriteSettingsJson(Dictionary<string, object?> json) {
+		await using var stream = new FileStream(JsonFilePath, FileMode.Truncate, FileAccess.Write, FileShare.None);
+		await JsonSerializer.SerializeAsync(stream, json, new JsonSerializerOptions { WriteIndented = true });
+	}
+}

app/Desktop/Discord/SettingsJsonResult.cs

@@ -0,0 +1,10 @@
+namespace DHT.Desktop.Discord;
+
+enum SettingsJsonResult {
+	Success,
+	AlreadySet,
+	FileNotFound,
+	ReadError,
+	InvalidJson,
+	WriteError
+}

app/Desktop/Main/AboutWindow.axaml

@@ -46,7 +46,7 @@
             <TextBlock Grid.Row="0" Grid.Column="1" FontWeight="Bold">License</TextBlock>
             <TextBlock Grid.Row="0" Grid.Column="2" FontWeight="Bold">Link</TextBlock>
 
-            <TextBlock Grid.Row="2" Grid.Column="0">.NET 5</TextBlock>
+            <TextBlock Grid.Row="2" Grid.Column="0">.NET 8</TextBlock>
             <TextBlock Grid.Row="2" Grid.Column="1">MIT</TextBlock>
             <Button Grid.Row="2" Grid.Column="2" Command="{Binding ShowLibraryNetCore}">GitHub</Button>
 

app/Desktop/Main/AboutWindow.axaml.cs

@@ -1,18 +1,11 @@
-using Avalonia;
+using System.Diagnostics.CodeAnalysis;
 using Avalonia.Controls;
-using Avalonia.Markup.Xaml;
 
-namespace DHT.Desktop.Main {
-	public class AboutWindow : Window {
-		public AboutWindow() {
-			InitializeComponent();
-			#if DEBUG
-			this.AttachDevTools();
-			#endif
-		}
+namespace DHT.Desktop.Main;
 
-		private void InitializeComponent() {
-			AvaloniaXamlLoader.Load(this);
-		}
+[SuppressMessage("ReSharper", "MemberCanBeInternal")]
+public sealed partial class AboutWindow : Window {
+	public AboutWindow() {
+		InitializeComponent();
 	}
 }

app/Desktop/Main/AboutWindowModel.cs

@@ -1,33 +1,33 @@
 using System.Diagnostics;
 
-namespace DHT.Desktop.Main {
-	public class AboutWindowModel {
-		public void ShowOfficialWebsite() {
-			OpenUrl("https://dht.chylex.com");
-		}
+namespace DHT.Desktop.Main;
 
-		public void ShowSourceCode() {
-			OpenUrl("https://github.com/chylex/Discord-History-Tracker");
-		}
+sealed class AboutWindowModel {
+	public void ShowOfficialWebsite() {
+		OpenUrl("https://dht.chylex.com");
+	}
 
-		public void ShowLibraryAvalonia() {
-			OpenUrl("https://www.nuget.org/packages/Avalonia");
-		}
+	public void ShowSourceCode() {
+		OpenUrl("https://github.com/chylex/Discord-History-Tracker");
+	}
 
-		public void ShowLibrarySqlite() {
-			OpenUrl("https://www.sqlite.org");
-		}
+	public void ShowLibraryAvalonia() {
+		OpenUrl("https://www.nuget.org/packages/Avalonia");
+	}
 
-		public void ShowLibrarySqliteAdoNet() {
-			OpenUrl("https://www.nuget.org/packages/Microsoft.Data.Sqlite");
-		}
+	public void ShowLibrarySqlite() {
+		OpenUrl("https://www.sqlite.org");
+	}
 
-		public void ShowLibraryNetCore() {
-			OpenUrl("https://github.com/dotnet/core");
-		}
+	public void ShowLibrarySqliteAdoNet() {
+		OpenUrl("https://www.nuget.org/packages/Microsoft.Data.Sqlite");
+	}
 
-		private static void OpenUrl(string url) {
-			Process.Start(new ProcessStartInfo { FileName = url, UseShellExecute = true });
-		}
+	public void ShowLibraryNetCore() {
+		OpenUrl("https://github.com/dotnet/core");
+	}
+
+	private static void OpenUrl(string url) {
+		Process.Start(new ProcessStartInfo { FileName = url, UseShellExecute = true });
 	}
 }

app/Desktop/Main/Controls/AttachmentFilterPanel.axaml

@@ -0,0 +1,51 @@
+<UserControl xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+             xmlns:controls="clr-namespace:DHT.Desktop.Main.Controls"
+             mc:Ignorable="d"
+             x:Class="DHT.Desktop.Main.Controls.AttachmentFilterPanel">
+
+    <Design.DataContext>
+        <controls:AttachmentFilterPanelModel />
+    </Design.DataContext>
+
+    <UserControl.Styles>
+        <Style Selector="WrapPanel > StackPanel">
+            <Setter Property="Margin" Value="0 20 40 0" />
+            <Setter Property="Spacing" Value="4" />
+        </Style>
+        <Style Selector="WrapPanel > StackPanel:nth-last-child(1)">
+            <Setter Property="Margin" Value="0 20 0 0" />
+        </Style>
+        <Style Selector="Grid > Label">
+            <Setter Property="VerticalAlignment" Value="Center" />
+        </Style>
+        <Style Selector="ComboBox">
+            <Setter Property="Margin" Value="8 0 0 0" />
+        </Style>
+        <Style Selector="Button">
+            <Setter Property="Margin" Value="0 0 0 8" />
+        </Style>
+    </UserControl.Styles>
+
+    <StackPanel>
+        <TextBlock Text="{Binding FilterStatisticsText}" />
+        <WrapPanel>
+            <StackPanel>
+                <CheckBox IsChecked="{Binding LimitSize}">Limit Size</CheckBox>
+                <StackPanel Orientation="Horizontal">
+                    <TextBox Text="{Binding MaximumSize}" IsEnabled="{Binding LimitSize}" HorizontalContentAlignment="Right" />
+                    <ComboBox IsEnabled="{Binding LimitSize}" ItemsSource="{Binding Units}" SelectedItem="{Binding MaximumSizeUnit}">
+                        <ComboBox.ItemTemplate>
+                            <DataTemplate>
+                                <TextBlock Text="{Binding Name}" />
+                            </DataTemplate>
+                        </ComboBox.ItemTemplate>
+                    </ComboBox>
+                </StackPanel>
+            </StackPanel>
+        </WrapPanel>
+    </StackPanel>
+
+</UserControl>

app/Desktop/Main/Controls/AttachmentFilterPanel.axaml.cs

@@ -0,0 +1,11 @@
+using System.Diagnostics.CodeAnalysis;
+using Avalonia.Controls;
+
+namespace DHT.Desktop.Main.Controls;
+
+[SuppressMessage("ReSharper", "MemberCanBeInternal")]
+public sealed partial class AttachmentFilterPanel : UserControl {
+	public AttachmentFilterPanel() {
+		InitializeComponent();
+	}
+}

app/Desktop/Main/Controls/AttachmentFilterPanelModel.cs

@@ -0,0 +1,129 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using DHT.Desktop.Common;
+using DHT.Server.Data.Filters;
+using DHT.Server.Database;
+using DHT.Utils.Models;
+using DHT.Utils.Tasks;
+
+namespace DHT.Desktop.Main.Controls;
+
+sealed class AttachmentFilterPanelModel : BaseModel, IDisposable {
+	public sealed record Unit(string Name, uint Scale);
+
+	private static readonly Unit[] AllUnits = {
+		new ("B", 1),
+		new ("kB", 1024),
+		new ("MB", 1024 * 1024)
+	};
+
+	private static readonly HashSet<string> FilterProperties = new () {
+		nameof(LimitSize),
+		nameof(MaximumSize),
+		nameof(MaximumSizeUnit)
+	};
+
+	public string FilterStatisticsText { get; private set; } = "";
+
+	private bool limitSize = false;
+	private ulong maximumSize = 0L;
+	private Unit maximumSizeUnit = AllUnits[0];
+
+	public bool LimitSize {
+		get => limitSize;
+		set => Change(ref limitSize, value);
+	}
+
+	public ulong MaximumSize {
+		get => maximumSize;
+		set => Change(ref maximumSize, value);
+	}
+
+	public Unit MaximumSizeUnit {
+		get => maximumSizeUnit;
+		set => Change(ref maximumSizeUnit, value);
+	}
+
+	public IEnumerable<Unit> Units => AllUnits;
+
+	private readonly IDatabaseFile db;
+	private readonly string verb;
+
+	private readonly AsyncValueComputer<long> matchingAttachmentCountComputer;
+	private long? matchingAttachmentCount;
+	private long? totalAttachmentCount;
+
+	[Obsolete("Designer")]
+	public AttachmentFilterPanelModel() : this(DummyDatabaseFile.Instance) {}
+
+	public AttachmentFilterPanelModel(IDatabaseFile db, string verb = "Matches") {
+		this.db = db;
+		this.verb = verb;
+
+		this.matchingAttachmentCountComputer = AsyncValueComputer<long>.WithResultProcessor(SetAttachmentCounts).Build();
+
+		UpdateFilterStatistics();
+
+		PropertyChanged += OnPropertyChanged;
+		db.Statistics.PropertyChanged += OnDbStatisticsChanged;
+	}
+
+	public void Dispose() {
+		db.Statistics.PropertyChanged -= OnDbStatisticsChanged;
+	}
+
+	private void OnPropertyChanged(object? sender, PropertyChangedEventArgs e) {
+		if (e.PropertyName != null && FilterProperties.Contains(e.PropertyName)) {
+			UpdateFilterStatistics();
+		}
+	}
+
+	private void OnDbStatisticsChanged(object? sender, PropertyChangedEventArgs e) {
+		if (e.PropertyName == nameof(DatabaseStatistics.TotalAttachments)) {
+			totalAttachmentCount = db.Statistics.TotalAttachments;
+			UpdateFilterStatistics();
+		}
+	}
+
+	private void UpdateFilterStatistics() {
+		var filter = CreateFilter();
+		if (filter.IsEmpty) {
+			matchingAttachmentCountComputer.Cancel();
+			matchingAttachmentCount = totalAttachmentCount;
+			UpdateFilterStatisticsText();
+		}
+		else {
+			matchingAttachmentCount = null;
+			UpdateFilterStatisticsText();
+			matchingAttachmentCountComputer.Compute(() => db.CountAttachments(filter));
+		}
+	}
+
+	private void SetAttachmentCounts(long matchingAttachmentCount) {
+		this.matchingAttachmentCount = matchingAttachmentCount;
+		UpdateFilterStatisticsText();
+	}
+
+	private void UpdateFilterStatisticsText() {
+		var matchingAttachmentCountStr = matchingAttachmentCount?.Format() ?? "(...)";
+		var totalAttachmentCountStr = totalAttachmentCount?.Format() ?? "(...)";
+
+		FilterStatisticsText = verb + " " + matchingAttachmentCountStr + " out of " + totalAttachmentCountStr + " attachment" + (totalAttachmentCount is null or 1 ? "." : "s.");
+		OnPropertyChanged(nameof(FilterStatisticsText));
+	}
+
+	public AttachmentFilter CreateFilter() {
+		AttachmentFilter filter = new();
+
+		if (LimitSize) {
+			try {
+				filter.MaxBytes = maximumSize * maximumSizeUnit.Scale;
+			} catch (ArithmeticException) {
+				// set no size limit, because the overflown size is larger than any file could possibly be
+			}
+		}
+
+		return filter;
+	}
+}

app/Desktop/Main/Controls/FilterPanel.axaml

@@ -1,57 +0,0 @@
-<UserControl xmlns="https://github.com/avaloniaui"
-             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
-             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
-             xmlns:controls="clr-namespace:DHT.Desktop.Main.Controls"
-             mc:Ignorable="d"
-             x:Class="DHT.Desktop.Main.Controls.FilterPanel">
-
-    <Design.DataContext>
-        <controls:FilterPanelModel />
-    </Design.DataContext>
-
-    <UserControl.Styles>
-        <Style Selector="WrapPanel > StackPanel">
-            <Setter Property="Margin" Value="0 20 40 0" />
-            <Setter Property="Spacing" Value="4" />
-        </Style>
-        <Style Selector="Grid > Label">
-            <Setter Property="VerticalAlignment" Value="Center" />
-        </Style>
-        <Style Selector="Grid > CalendarDatePicker">
-            <Setter Property="CornerRadius" Value="0" />
-            <Setter Property="HorizontalAlignment" Value="Stretch" />
-            <Setter Property="HorizontalContentAlignment" Value="Center" />
-            <Setter Property="VerticalAlignment" Value="Center" />
-            <Setter Property="VerticalContentAlignment" Value="Center" />
-            <Setter Property="IsTodayHighlighted" Value="True" />
-            <Setter Property="SelectedDateFormat" Value="Short" />
-        </Style>
-        <Style Selector="Button">
-            <Setter Property="Margin" Value="0 0 0 8" />
-        </Style>
-    </UserControl.Styles>
-
-    <WrapPanel>
-        <StackPanel>
-            <CheckBox IsChecked="{Binding FilterByDate}">Filter by Date</CheckBox>
-            <Grid ColumnDefinitions="Auto, 4, 125" RowDefinitions="Auto, 4, Auto" Margin="4 0">
-                <Label Grid.Row="0" Grid.Column="0">From:</Label>
-                <CalendarDatePicker Grid.Row="0" Grid.Column="2" x:Name="StartDatePicker" IsEnabled="{Binding FilterByDate}" SelectedDateChanged="CalendarDatePicker_OnSelectedDateChanged" />
-                <Label Grid.Row="2" Grid.Column="0">To:</Label>
-                <CalendarDatePicker Grid.Row="2" Grid.Column="2" x:Name="EndDatePicker" IsEnabled="{Binding FilterByDate}" SelectedDateChanged="CalendarDatePicker_OnSelectedDateChanged" />
-            </Grid>
-        </StackPanel>
-        <StackPanel>
-            <CheckBox IsChecked="{Binding FilterByChannel}">Filter by Channel</CheckBox>
-            <Button Command="{Binding OpenChannelFilterDialog}" IsEnabled="{Binding FilterByChannel}">Select Channels...</Button>
-            <TextBlock Text="{Binding ChannelFilterLabel}" />
-        </StackPanel>
-        <StackPanel>
-            <CheckBox IsChecked="{Binding FilterByUser}">Filter by User</CheckBox>
-            <Button Command="{Binding OpenUserFilterDialog}" IsEnabled="{Binding FilterByUser}">Select Users...</Button>
-            <TextBlock Text="{Binding UserFilterLabel}" />
-        </StackPanel>
-    </WrapPanel>
-
-</UserControl>

app/Desktop/Main/Controls/FilterPanel.axaml.cs

@@ -1,32 +0,0 @@
-using Avalonia.Controls;
-using Avalonia.Markup.Xaml;
-
-namespace DHT.Desktop.Main.Controls {
-	public class FilterPanel : UserControl {
-		private CalendarDatePicker StartDatePicker => this.FindControl<CalendarDatePicker>("StartDatePicker");
-		private CalendarDatePicker EndDatePicker => this.FindControl<CalendarDatePicker>("EndDatePicker");
-
-		public FilterPanel() {
-			InitializeComponent();
-		}
-
-		private void InitializeComponent() {
-			AvaloniaXamlLoader.Load(this);
-
-			var culture = Program.Culture;
-			foreach (var picker in new CalendarDatePicker[] { StartDatePicker, EndDatePicker }) {
-				picker.FirstDayOfWeek = culture.DateTimeFormat.FirstDayOfWeek;
-				picker.SelectedDateFormat = CalendarDatePickerFormat.Custom;
-				picker.CustomDateFormatString = culture.DateTimeFormat.ShortDatePattern;
-				picker.Watermark = culture.DateTimeFormat.ShortDatePattern;
-			}
-		}
-
-		public void CalendarDatePicker_OnSelectedDateChanged(object? sender, SelectionChangedEventArgs e) {
-			if (DataContext is FilterPanelModel model) {
-				model.StartDate = StartDatePicker.SelectedDate;
-				model.EndDate = EndDatePicker.SelectedDate;
-			}
-		}
-	}
-}

app/Desktop/Main/Controls/FilterPanelModel.cs

@@ -1,236 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.ComponentModel;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-using Avalonia.Controls;
-using DHT.Desktop.Common;
-using DHT.Desktop.Dialogs;
-using DHT.Desktop.Models;
-using DHT.Server.Data;
-using DHT.Server.Data.Filters;
-using DHT.Server.Database;
-
-namespace DHT.Desktop.Main.Controls {
-	public class FilterPanelModel : BaseModel {
-		private static readonly HashSet<string> FilterProperties = new () {
-			nameof(FilterByDate),
-			nameof(StartDate),
-			nameof(EndDate),
-			nameof(FilterByChannel),
-			nameof(IncludedChannels),
-			nameof(FilterByUser),
-			nameof(IncludedUsers)
-		};
-
-		public event PropertyChangedEventHandler? FilterPropertyChanged;
-
-		public bool HasAnyFilters => FilterByDate || FilterByChannel || FilterByUser;
-
-		private bool filterByDate = false;
-		private DateTime? startDate = null;
-		private DateTime? endDate = null;
-		private bool filterByChannel = false;
-		private HashSet<ulong>? includedChannels = null;
-		private bool filterByUser = false;
-		private HashSet<ulong>? includedUsers = null;
-
-		public bool FilterByDate {
-			get => filterByDate;
-			set => Change(ref filterByDate, value);
-		}
-
-		public DateTime? StartDate {
-			get => startDate;
-			set => Change(ref startDate, value);
-		}
-
-		public DateTime? EndDate {
-			get => endDate;
-			set => Change(ref endDate, value);
-		}
-
-		public bool FilterByChannel {
-			get => filterByChannel;
-			set => Change(ref filterByChannel, value);
-		}
-
-		public HashSet<ulong> IncludedChannels {
-			get => includedChannels ?? db.GetAllChannels().Select(channel => channel.Id).ToHashSet();
-			set => Change(ref includedChannels, value);
-		}
-
-		public bool FilterByUser {
-			get => filterByUser;
-			set => Change(ref filterByUser, value);
-		}
-
-		public HashSet<ulong> IncludedUsers {
-			get => includedUsers ?? db.GetAllUsers().Select(user => user.Id).ToHashSet();
-			set => Change(ref includedUsers, value);
-		}
-
-		private string channelFilterLabel = "";
-
-		public string ChannelFilterLabel {
-			get => channelFilterLabel;
-			set => Change(ref channelFilterLabel, value);
-		}
-
-		private string userFilterLabel = "";
-
-		public string UserFilterLabel {
-			get => userFilterLabel;
-			set => Change(ref userFilterLabel, value);
-		}
-
-		private readonly Window window;
-		private readonly IDatabaseFile db;
-
-		[Obsolete("Designer")]
-		public FilterPanelModel() : this(null!, DummyDatabaseFile.Instance) {}
-
-		public FilterPanelModel(Window window, IDatabaseFile db) {
-			this.window = window;
-			this.db = db;
-
-			UpdateChannelFilterLabel();
-			UpdateUserFilterLabel();
-
-			PropertyChanged += OnPropertyChanged;
-			db.Statistics.PropertyChanged += OnDbStatisticsChanged;
-		}
-
-		private void OnPropertyChanged(object? sender, PropertyChangedEventArgs e) {
-			if (e.PropertyName != null && FilterProperties.Contains(e.PropertyName)) {
-				FilterPropertyChanged?.Invoke(sender, e);
-			}
-
-			if (e.PropertyName is nameof(FilterByChannel) or nameof(IncludedChannels)) {
-				UpdateChannelFilterLabel();
-			}
-			else if (e.PropertyName is nameof(FilterByUser) or nameof(IncludedUsers)) {
-				UpdateUserFilterLabel();
-			}
-		}
-
-		private void OnDbStatisticsChanged(object? sender, PropertyChangedEventArgs e) {
-			if (e.PropertyName == nameof(DatabaseStatistics.TotalChannels)) {
-				UpdateChannelFilterLabel();
-			}
-			else if (e.PropertyName == nameof(DatabaseStatistics.TotalUsers)) {
-				UpdateUserFilterLabel();
-			}
-		}
-
-		public async void OpenChannelFilterDialog() {
-			var servers = db.GetAllServers().ToDictionary(server => server.Id);
-			var items = new List<CheckBoxItem<ulong>>();
-			var included = IncludedChannels;
-
-			foreach (var channel in db.GetAllChannels()) {
-				var channelId = channel.Id;
-				var channelName = channel.Name;
-
-				string title;
-				if (servers.TryGetValue(channel.Server, out var server)) {
-					var titleBuilder = new StringBuilder();
-					var serverType = server.Type;
-
-					titleBuilder.Append('[')
-					            .Append(ServerTypes.ToString(serverType))
-					            .Append("] ");
-
-					if (serverType == ServerType.DirectMessage) {
-						titleBuilder.Append(channelName);
-					}
-					else {
-						titleBuilder.Append(server.Name)
-						            .Append(" - ")
-						            .Append(channelName);
-					}
-
-					title = titleBuilder.ToString();
-				}
-				else {
-					title = channelName;
-				}
-
-				items.Add(new CheckBoxItem<ulong>(channelId) {
-					Title = title,
-					Checked = included.Contains(channelId)
-				});
-			}
-
-			var result = await OpenIdFilterDialog(window, "Included Channels", items);
-			if (result != null) {
-				IncludedChannels = result;
-			}
-		}
-
-		public async void OpenUserFilterDialog() {
-			var items = new List<CheckBoxItem<ulong>>();
-			var included = IncludedUsers;
-
-			foreach (var user in db.GetAllUsers()) {
-				var name = user.Name;
-				var discriminator = user.Discriminator;
-
-				items.Add(new CheckBoxItem<ulong>(user.Id) {
-					Title = discriminator == null ? name : name + " #" + discriminator,
-					Checked = included.Contains(user.Id)
-				});
-			}
-
-			var result = await OpenIdFilterDialog(window, "Included Users", items);
-			if (result != null) {
-				IncludedUsers = result;
-			}
-		}
-
-		private void UpdateChannelFilterLabel() {
-			long total = db.Statistics.TotalChannels;
-			long included = FilterByChannel ? IncludedChannels.Count : total;
-			ChannelFilterLabel = "Selected " + included.Format() + " / " + total.Pluralize("channel") + ".";
-		}
-
-		private void UpdateUserFilterLabel() {
-			long total = db.Statistics.TotalUsers;
-			long included = FilterByUser ? IncludedUsers.Count : total;
-			UserFilterLabel = "Selected " + included.Format() + " / " + total.Pluralize("user") + ".";
-		}
-
-		public MessageFilter CreateFilter() {
-			MessageFilter filter = new();
-
-			if (FilterByDate) {
-				filter.StartDate = StartDate;
-				filter.EndDate = EndDate;
-			}
-
-			if (FilterByChannel) {
-				filter.ChannelIds = new HashSet<ulong>(IncludedChannels);
-			}
-
-			if (FilterByUser) {
-				filter.UserIds = new HashSet<ulong>(IncludedUsers);
-			}
-
-			return filter;
-		}
-
-		private static async Task<HashSet<ulong>?> OpenIdFilterDialog(Window window, string title, List<CheckBoxItem<ulong>> items) {
-			items.Sort((item1, item2) => item1.Title.CompareTo(item2.Title));
-
-			var model = new CheckBoxDialogModel<ulong>(items) {
-				Title = title
-			};
-
-			var dialog = new CheckBoxDialog { DataContext = model };
-			var result = await dialog.ShowDialog<DialogResult.OkCancel>(window);
-
-			return result == DialogResult.OkCancel.Ok ? model.SelectedItems.Select(item => item.Item).ToHashSet() : null;
-		}
-	}
-}

app/Desktop/Main/Controls/MessageFilterPanel.axaml

@@ -0,0 +1,63 @@
+<UserControl xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+             xmlns:controls="clr-namespace:DHT.Desktop.Main.Controls"
+             mc:Ignorable="d"
+             x:Class="DHT.Desktop.Main.Controls.MessageFilterPanel">
+
+    <Design.DataContext>
+        <controls:MessageFilterPanelModel />
+    </Design.DataContext>
+
+    <UserControl.Styles>
+        <Style Selector="WrapPanel > StackPanel">
+            <Setter Property="Margin" Value="0 20 40 0" />
+            <Setter Property="Spacing" Value="4" />
+        </Style>
+        <Style Selector="WrapPanel > StackPanel:nth-last-child(1)">
+            <Setter Property="Margin" Value="0 20 0 0" />
+        </Style>
+        <Style Selector="Grid > Label">
+            <Setter Property="VerticalAlignment" Value="Center" />
+        </Style>
+        <Style Selector="Grid > CalendarDatePicker">
+            <Setter Property="CornerRadius" Value="0" />
+            <Setter Property="HorizontalAlignment" Value="Stretch" />
+            <Setter Property="HorizontalContentAlignment" Value="Center" />
+            <Setter Property="VerticalAlignment" Value="Center" />
+            <Setter Property="VerticalContentAlignment" Value="Center" />
+            <Setter Property="IsTodayHighlighted" Value="True" />
+            <Setter Property="SelectedDateFormat" Value="Short" />
+        </Style>
+        <Style Selector="Button">
+            <Setter Property="Margin" Value="0 0 0 8" />
+        </Style>
+    </UserControl.Styles>
+
+    <StackPanel>
+        <TextBlock Text="{Binding FilterStatisticsText}" />
+        <WrapPanel>
+            <StackPanel>
+                <CheckBox IsChecked="{Binding FilterByDate}">Filter by Date</CheckBox>
+                <Grid ColumnDefinitions="Auto, 4, 125" RowDefinitions="Auto, 4, Auto" Margin="4 0">
+                    <Label Grid.Row="0" Grid.Column="0">From:</Label>
+                    <CalendarDatePicker Grid.Row="0" Grid.Column="2" x:Name="StartDatePicker" IsEnabled="{Binding FilterByDate}" SelectedDateChanged="CalendarDatePicker_OnSelectedDateChanged" />
+                    <Label Grid.Row="2" Grid.Column="0">To:</Label>
+                    <CalendarDatePicker Grid.Row="2" Grid.Column="2" x:Name="EndDatePicker" IsEnabled="{Binding FilterByDate}" SelectedDateChanged="CalendarDatePicker_OnSelectedDateChanged" />
+                </Grid>
+            </StackPanel>
+            <StackPanel>
+                <CheckBox IsChecked="{Binding FilterByChannel}">Filter by Channel</CheckBox>
+                <Button Command="{Binding OpenChannelFilterDialog}" IsEnabled="{Binding FilterByChannel}">Select Channels...</Button>
+                <TextBlock Text="{Binding ChannelFilterLabel}" />
+            </StackPanel>
+            <StackPanel>
+                <CheckBox IsChecked="{Binding FilterByUser}">Filter by User</CheckBox>
+                <Button Command="{Binding OpenUserFilterDialog}" IsEnabled="{Binding FilterByUser}">Select Users...</Button>
+                <TextBlock Text="{Binding UserFilterLabel}" />
+            </StackPanel>
+        </WrapPanel>
+    </StackPanel>
+
+</UserControl>

app/Desktop/Main/Controls/MessageFilterPanel.axaml.cs

@@ -0,0 +1,26 @@
+using System.Diagnostics.CodeAnalysis;
+using Avalonia.Controls;
+
+namespace DHT.Desktop.Main.Controls;
+
+[SuppressMessage("ReSharper", "MemberCanBeInternal")]
+public sealed partial class MessageFilterPanel : UserControl {
+	public MessageFilterPanel() {
+		InitializeComponent();
+
+		var culture = Program.Culture;
+		foreach (var picker in new CalendarDatePicker[] { StartDatePicker, EndDatePicker }) {
+			picker.FirstDayOfWeek = culture.DateTimeFormat.FirstDayOfWeek;
+			picker.SelectedDateFormat = CalendarDatePickerFormat.Custom;
+			picker.CustomDateFormatString = culture.DateTimeFormat.ShortDatePattern;
+			picker.Watermark = culture.DateTimeFormat.ShortDatePattern;
+		}
+	}
+
+	public void CalendarDatePicker_OnSelectedDateChanged(object? sender, SelectionChangedEventArgs e) {
+		if (DataContext is MessageFilterPanelModel model) {
+			model.StartDate = StartDatePicker.SelectedDate;
+			model.EndDate = EndDatePicker.SelectedDate;
+		}
+	}
+}

app/Desktop/Main/Controls/MessageFilterPanelModel.cs

@@ -0,0 +1,285 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Avalonia.Controls;
+using DHT.Desktop.Common;
+using DHT.Desktop.Dialogs.CheckBox;
+using DHT.Desktop.Dialogs.Message;
+using DHT.Server.Data;
+using DHT.Server.Data.Filters;
+using DHT.Server.Database;
+using DHT.Utils.Models;
+using DHT.Utils.Tasks;
+
+namespace DHT.Desktop.Main.Controls;
+
+sealed class MessageFilterPanelModel : BaseModel, IDisposable {
+	private static readonly HashSet<string> FilterProperties = new () {
+		nameof(FilterByDate),
+		nameof(StartDate),
+		nameof(EndDate),
+		nameof(FilterByChannel),
+		nameof(IncludedChannels),
+		nameof(FilterByUser),
+		nameof(IncludedUsers)
+	};
+
+	public string FilterStatisticsText { get; private set; } = "";
+
+	public event PropertyChangedEventHandler? FilterPropertyChanged;
+
+	public bool HasAnyFilters => FilterByDate || FilterByChannel || FilterByUser;
+
+	private bool filterByDate = false;
+	private DateTime? startDate = null;
+	private DateTime? endDate = null;
+	private bool filterByChannel = false;
+	private HashSet<ulong>? includedChannels = null;
+	private bool filterByUser = false;
+	private HashSet<ulong>? includedUsers = null;
+
+	public bool FilterByDate {
+		get => filterByDate;
+		set => Change(ref filterByDate, value);
+	}
+
+	public DateTime? StartDate {
+		get => startDate;
+		set => Change(ref startDate, value);
+	}
+
+	public DateTime? EndDate {
+		get => endDate;
+		set => Change(ref endDate, value);
+	}
+
+	public bool FilterByChannel {
+		get => filterByChannel;
+		set => Change(ref filterByChannel, value);
+	}
+
+	public HashSet<ulong> IncludedChannels {
+		get => includedChannels ?? db.GetAllChannels().Select(static channel => channel.Id).ToHashSet();
+		set => Change(ref includedChannels, value);
+	}
+
+	public bool FilterByUser {
+		get => filterByUser;
+		set => Change(ref filterByUser, value);
+	}
+
+	public HashSet<ulong> IncludedUsers {
+		get => includedUsers ?? db.GetAllUsers().Select(static user => user.Id).ToHashSet();
+		set => Change(ref includedUsers, value);
+	}
+
+	private string channelFilterLabel = "";
+
+	public string ChannelFilterLabel {
+		get => channelFilterLabel;
+		set => Change(ref channelFilterLabel, value);
+	}
+
+	private string userFilterLabel = "";
+
+	public string UserFilterLabel {
+		get => userFilterLabel;
+		set => Change(ref userFilterLabel, value);
+	}
+
+	private readonly Window window;
+	private readonly IDatabaseFile db;
+	private readonly string verb;
+
+	private readonly AsyncValueComputer<long> exportedMessageCountComputer;
+	private long? exportedMessageCount;
+	private long? totalMessageCount;
+
+	[Obsolete("Designer")]
+	public MessageFilterPanelModel() : this(null!, DummyDatabaseFile.Instance) {}
+
+	public MessageFilterPanelModel(Window window, IDatabaseFile db, string verb = "Matches") {
+		this.window = window;
+		this.db = db;
+		this.verb = verb;
+
+		this.exportedMessageCountComputer = AsyncValueComputer<long>.WithResultProcessor(SetExportedMessageCount).Build();
+
+		UpdateFilterStatistics();
+		UpdateChannelFilterLabel();
+		UpdateUserFilterLabel();
+
+		PropertyChanged += OnPropertyChanged;
+		db.Statistics.PropertyChanged += OnDbStatisticsChanged;
+	}
+
+	public void Dispose() {
+		db.Statistics.PropertyChanged -= OnDbStatisticsChanged;
+	}
+
+	private void OnPropertyChanged(object? sender, PropertyChangedEventArgs e) {
+		if (e.PropertyName != null && FilterProperties.Contains(e.PropertyName)) {
+			UpdateFilterStatistics();
+			FilterPropertyChanged?.Invoke(sender, e);
+		}
+
+		if (e.PropertyName is nameof(FilterByChannel) or nameof(IncludedChannels)) {
+			UpdateChannelFilterLabel();
+		}
+		else if (e.PropertyName is nameof(FilterByUser) or nameof(IncludedUsers)) {
+			UpdateUserFilterLabel();
+		}
+	}
+
+	private void OnDbStatisticsChanged(object? sender, PropertyChangedEventArgs e) {
+		if (e.PropertyName == nameof(DatabaseStatistics.TotalMessages)) {
+			totalMessageCount = db.Statistics.TotalMessages;
+			UpdateFilterStatistics();
+		}
+		else if (e.PropertyName == nameof(DatabaseStatistics.TotalChannels)) {
+			UpdateChannelFilterLabel();
+		}
+		else if (e.PropertyName == nameof(DatabaseStatistics.TotalUsers)) {
+			UpdateUserFilterLabel();
+		}
+	}
+
+	private void UpdateFilterStatistics() {
+		var filter = CreateFilter();
+		if (filter.IsEmpty) {
+			exportedMessageCountComputer.Cancel();
+			exportedMessageCount = totalMessageCount;
+			UpdateFilterStatisticsText();
+		}
+		else {
+			exportedMessageCount = null;
+			UpdateFilterStatisticsText();
+			exportedMessageCountComputer.Compute(() => db.CountMessages(filter));
+		}
+	}
+
+	private void SetExportedMessageCount(long exportedMessageCount) {
+		this.exportedMessageCount = exportedMessageCount;
+		UpdateFilterStatisticsText();
+	}
+
+	private void UpdateFilterStatisticsText() {
+		var exportedMessageCountStr = exportedMessageCount?.Format() ?? "(...)";
+		var totalMessageCountStr = totalMessageCount?.Format() ?? "(...)";
+
+		FilterStatisticsText = verb + " " + exportedMessageCountStr + " out of " + totalMessageCountStr + " message" + (totalMessageCount is null or 1 ? "." : "s.");
+		OnPropertyChanged(nameof(FilterStatisticsText));
+	}
+
+	public async void OpenChannelFilterDialog() {
+		var servers = db.GetAllServers().ToDictionary(static server => server.Id);
+		var items = new List<CheckBoxItem<ulong>>();
+		var included = IncludedChannels;
+
+		foreach (var channel in db.GetAllChannels()) {
+			var channelId = channel.Id;
+			var channelName = channel.Name;
+
+			string title;
+			if (servers.TryGetValue(channel.Server, out var server)) {
+				var titleBuilder = new StringBuilder();
+				var serverType = server.Type;
+
+				titleBuilder.Append('[')
+				            .Append(ServerTypes.ToString(serverType))
+				            .Append("] ");
+
+				if (serverType == ServerType.DirectMessage) {
+					titleBuilder.Append(channelName);
+				}
+				else {
+					titleBuilder.Append(server.Name)
+					            .Append(" - ")
+					            .Append(channelName);
+				}
+
+				title = titleBuilder.ToString();
+			}
+			else {
+				title = channelName;
+			}
+
+			items.Add(new CheckBoxItem<ulong>(channelId) {
+				Title = title,
+				Checked = included.Contains(channelId)
+			});
+		}
+
+		var result = await OpenIdFilterDialog(window, "Included Channels", items);
+		if (result != null) {
+			IncludedChannels = result;
+		}
+	}
+
+	public async void OpenUserFilterDialog() {
+		var items = new List<CheckBoxItem<ulong>>();
+		var included = IncludedUsers;
+
+		foreach (var user in db.GetAllUsers()) {
+			var name = user.Name;
+			var discriminator = user.Discriminator;
+
+			items.Add(new CheckBoxItem<ulong>(user.Id) {
+				Title = discriminator == null ? name : name + " #" + discriminator,
+				Checked = included.Contains(user.Id)
+			});
+		}
+
+		var result = await OpenIdFilterDialog(window, "Included Users", items);
+		if (result != null) {
+			IncludedUsers = result;
+		}
+	}
+
+	private void UpdateChannelFilterLabel() {
+		long total = db.Statistics.TotalChannels;
+		long included = FilterByChannel ? IncludedChannels.Count : total;
+		ChannelFilterLabel = "Selected " + included.Format() + " / " + total.Pluralize("channel") + ".";
+	}
+
+	private void UpdateUserFilterLabel() {
+		long total = db.Statistics.TotalUsers;
+		long included = FilterByUser ? IncludedUsers.Count : total;
+		UserFilterLabel = "Selected " + included.Format() + " / " + total.Pluralize("user") + ".";
+	}
+
+	public MessageFilter CreateFilter() {
+		MessageFilter filter = new();
+
+		if (FilterByDate) {
+			filter.StartDate = StartDate;
+			filter.EndDate = EndDate?.AddDays(1).AddMilliseconds(-1);
+		}
+
+		if (FilterByChannel) {
+			filter.ChannelIds = new HashSet<ulong>(IncludedChannels);
+		}
+
+		if (FilterByUser) {
+			filter.UserIds = new HashSet<ulong>(IncludedUsers);
+		}
+
+		return filter;
+	}
+
+	private static async Task<HashSet<ulong>?> OpenIdFilterDialog(Window window, string title, List<CheckBoxItem<ulong>> items) {
+		items.Sort(static (item1, item2) => item1.Title.CompareTo(item2.Title));
+
+		var model = new CheckBoxDialogModel<ulong>(items) {
+			Title = title
+		};
+
+		var dialog = new CheckBoxDialog { DataContext = model };
+		var result = await dialog.ShowDialog<DialogResult.OkCancel>(window);
+
+		return result == DialogResult.OkCancel.Ok ? model.SelectedItems.Select(static item => item.Item).ToHashSet() : null;
+	}
+}

app/Desktop/Main/Controls/ServerConfigurationPanel.axaml

@@ -0,0 +1,48 @@
+<UserControl xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+             xmlns:controls="clr-namespace:DHT.Desktop.Main.Controls"
+             mc:Ignorable="d"
+             x:Class="DHT.Desktop.Main.Controls.ServerConfigurationPanel">
+
+    <Design.DataContext>
+        <controls:ServerConfigurationPanelModel />
+    </Design.DataContext>
+
+    <UserControl.Styles>
+        <Style Selector="TextBox">
+            <Setter Property="FontFamily" Value="Consolas,Courier" />
+            <Setter Property="FontSize" Value="15" />
+        </Style>
+        <Style Selector="WrapPanel > StackPanel">
+            <Setter Property="Orientation" Value="Vertical" />
+            <Setter Property="Margin" Value="0 0 10 10" />
+        </Style>
+    </UserControl.Styles>
+
+    <StackPanel>
+        <Button Command="{Binding OnClickToggleServerButton}" Content="{Binding ToggleServerButtonText}" IsEnabled="{Binding IsToggleServerButtonEnabled}" />
+        <TextBlock TextWrapping="Wrap" Margin="0 15">
+            The following settings determine how the tracking script communicates with this application. If you change them, you will have to copy/paste the tracking script again.
+        </TextBlock>
+        <WrapPanel>
+            <StackPanel>
+                <Label Target="Port">Port</Label>
+                <TextBox x:Name="Port" Width="70" Text="{Binding InputPort}" />
+            </StackPanel>
+            <StackPanel>
+                <Label Target="Token">Token</Label>
+                <TextBox x:Name="Token" Width="200" Text="{Binding InputToken}" />
+            </StackPanel>
+            <StackPanel VerticalAlignment="Bottom">
+                <Button Command="{Binding OnClickRandomizeToken}">Randomize Token</Button>
+            </StackPanel>
+        </WrapPanel>
+        <StackPanel Orientation="Horizontal" Spacing="10">
+            <Button IsEnabled="{Binding HasMadeChanges}" Command="{Binding OnClickApplyChanges}">Apply &amp; Restart</Button>
+            <Button IsEnabled="{Binding HasMadeChanges}" Command="{Binding OnClickCancelChanges}">Cancel</Button>
+        </StackPanel>
+    </StackPanel>
+
+</UserControl>

app/Desktop/Main/Controls/ServerConfigurationPanel.axaml.cs

@@ -0,0 +1,11 @@
+using System.Diagnostics.CodeAnalysis;
+using Avalonia.Controls;
+
+namespace DHT.Desktop.Main.Controls;
+
+[SuppressMessage("ReSharper", "MemberCanBeInternal")]
+public sealed partial class ServerConfigurationPanel : UserControl {
+	public ServerConfigurationPanel() {
+		InitializeComponent();
+	}
+}

app/Desktop/Main/Controls/ServerConfigurationPanelModel.cs

@@ -0,0 +1,116 @@
+using System;
+using Avalonia.Controls;
+using DHT.Desktop.Dialogs.Message;
+using DHT.Desktop.Server;
+using DHT.Server.Database;
+using DHT.Server.Service;
+using DHT.Utils.Models;
+
+namespace DHT.Desktop.Main.Controls;
+
+sealed class ServerConfigurationPanelModel : BaseModel, IDisposable {
+	private string inputPort;
+
+	public string InputPort {
+		get => inputPort;
+		set {
+			Change(ref inputPort, value);
+			OnPropertyChanged(nameof(HasMadeChanges));
+		}
+	}
+
+	private string inputToken;
+
+	public string InputToken {
+		get => inputToken;
+		set {
+			Change(ref inputToken, value);
+			OnPropertyChanged(nameof(HasMadeChanges));
+		}
+	}
+
+	public bool HasMadeChanges => ServerManager.Port.ToString() != InputPort || ServerManager.Token != InputToken;
+
+	private bool isToggleServerButtonEnabled = true;
+
+	public bool IsToggleServerButtonEnabled {
+		get => isToggleServerButtonEnabled;
+		set => Change(ref isToggleServerButtonEnabled, value);
+	}
+
+	public string ToggleServerButtonText => serverManager.IsRunning ? "Stop Server" : "Start Server";
+
+	public event EventHandler<StatusBarModel.Status>? ServerStatusChanged;
+
+	private readonly Window window;
+	private readonly ServerManager serverManager;
+
+	[Obsolete("Designer")]
+	public ServerConfigurationPanelModel() : this(null!, new ServerManager(DummyDatabaseFile.Instance)) {}
+
+	public ServerConfigurationPanelModel(Window window, ServerManager serverManager) {
+		this.window = window;
+		this.serverManager = serverManager;
+		this.inputPort = ServerManager.Port.ToString();
+		this.inputToken = ServerManager.Token;
+	}
+
+	public void Initialize() {
+		ServerLauncher.ServerStatusChanged += ServerLauncherOnServerStatusChanged;
+	}
+
+	public void Dispose() {
+		ServerLauncher.ServerStatusChanged -= ServerLauncherOnServerStatusChanged;
+	}
+
+	private void ServerLauncherOnServerStatusChanged(object? sender, EventArgs e) {
+		ServerStatusChanged?.Invoke(this, serverManager.IsRunning ? StatusBarModel.Status.Ready : StatusBarModel.Status.Stopped);
+		OnPropertyChanged(nameof(ToggleServerButtonText));
+		IsToggleServerButtonEnabled = true;
+	}
+
+	private void BeforeServerStart() {
+		IsToggleServerButtonEnabled = false;
+		ServerStatusChanged?.Invoke(this, StatusBarModel.Status.Starting);
+	}
+
+	private void StartServer() {
+		BeforeServerStart();
+		serverManager.Launch();
+	}
+
+	private void StopServer() {
+		IsToggleServerButtonEnabled = false;
+		ServerStatusChanged?.Invoke(this, StatusBarModel.Status.Stopping);
+		serverManager.Stop();
+	}
+
+	public void OnClickToggleServerButton() {
+		if (serverManager.IsRunning) {
+			StopServer();
+		}
+		else {
+			StartServer();
+		}
+	}
+
+	public void OnClickRandomizeToken() {
+		InputToken = ServerUtils.GenerateRandomToken(20);
+	}
+
+	public async void OnClickApplyChanges() {
+		if (!ushort.TryParse(InputPort, out ushort port)) {
+			await Dialog.ShowOk(window, "Invalid Port", "Port must be a number between 0 and 65535.");
+			return;
+		}
+
+		BeforeServerStart();
+		serverManager.Relaunch(port, InputToken);
+		OnPropertyChanged(nameof(HasMadeChanges));
+	}
+
+	public void OnClickCancelChanges() {
+		InputPort = ServerManager.Port.ToString();
+		InputToken = ServerManager.Token;
+	}
+}

app/Desktop/Main/Controls/StatusBar.axaml

@@ -11,32 +11,35 @@
     </Design.DataContext>
 
     <UserControl.Background>
-        <SolidColorBrush>#546A9F</SolidColorBrush>
+        <SolidColorBrush>#3C4F79</SolidColorBrush>
     </UserControl.Background>
 
     <UserControl.Styles>
         <Style Selector="StackPanel > TextBlock">
-            <Setter Property="Foreground" Value="#E0E0E0" />
+            <Setter Property="Foreground" Value="#E7E7E7" />
         </Style>
         <Style Selector="StackPanel > TextBlock.label">
             <Setter Property="FontSize" Value="15" />
+            <Setter Property="FontWeight" Value="SemiLight" />
         </Style>
         <Style Selector="StackPanel > TextBlock.value">
             <Setter Property="FontSize" Value="16" />
+            <Setter Property="FontWeight" Value="SemiLight" />
             <Setter Property="TextAlignment" Value="Right" />
+            <Setter Property="Margin" Value="0 1" />
         </Style>
         <Style Selector="StackPanel > Rectangle">
-            <Setter Property="Margin" Value="14 0" />
-            <Setter Property="Stroke" Value="#3B5287" />
+            <Setter Property="Margin" Value="14 1" />
+            <Setter Property="Stroke" Value="#697899" />
             <Setter Property="StrokeThickness" Value="2" />
             <Setter Property="VerticalAlignment" Value="Stretch" />
         </Style>
     </UserControl.Styles>
 
-    <StackPanel Orientation="Horizontal" Margin="4 3">
+    <StackPanel Orientation="Horizontal" Margin="6 3">
         <StackPanel Orientation="Vertical" Width="65">
             <TextBlock Classes="label">Status</TextBlock>
-            <TextBlock FontSize="12" Margin="0 2 0 0" Text="{Binding StatusText}" />
+            <TextBlock FontSize="12" Margin="0 3 0 0" Text="{Binding StatusText}" />
         </StackPanel>
         <Rectangle />
         <StackPanel Orientation="Vertical">

app/Desktop/Main/Controls/StatusBar.axaml.cs

@@ -1,14 +1,11 @@
+using System.Diagnostics.CodeAnalysis;
 using Avalonia.Controls;
-using Avalonia.Markup.Xaml;
 
-namespace DHT.Desktop.Main.Controls {
-	public class StatusBar : UserControl {
-		public StatusBar() {
-			InitializeComponent();
-		}
+namespace DHT.Desktop.Main.Controls;
 
-		private void InitializeComponent() {
-			AvaloniaXamlLoader.Load(this);
-		}
+[SuppressMessage("ReSharper", "MemberCanBeInternal")]
+public sealed partial class StatusBar : UserControl {
+	public StatusBar() {
+		InitializeComponent();
 	}
 }

app/Desktop/Main/Controls/StatusBarModel.cs

@@ -1,45 +1,45 @@
 using System;
-using DHT.Desktop.Models;
 using DHT.Server.Database;
+using DHT.Utils.Models;
 
-namespace DHT.Desktop.Main.Controls {
-	public class StatusBarModel : BaseModel {
-		public DatabaseStatistics DatabaseStatistics { get; }
+namespace DHT.Desktop.Main.Controls;
 
-		private Status status = Status.Stopped;
+sealed class StatusBarModel : BaseModel {
+	public DatabaseStatistics DatabaseStatistics { get; }
 
-		public Status CurrentStatus {
-			get => status;
-			set {
-				status = value;
-				OnPropertyChanged(nameof(StatusText));
-			}
-		}
+	private Status status = Status.Stopped;
 
-		public string StatusText {
-			get {
-				return CurrentStatus switch {
-					Status.Starting => "STARTING",
-					Status.Ready    => "READY",
-					Status.Stopping => "STOPPING",
-					Status.Stopped  => "STOPPED",
-					_               => ""
-				};
-			}
-		}
-
-		[Obsolete("Designer")]
-		public StatusBarModel() : this(new DatabaseStatistics()) {}
-
-		public StatusBarModel(DatabaseStatistics databaseStatistics) {
-			this.DatabaseStatistics = databaseStatistics;
-		}
-
-		public enum Status {
-			Starting,
-			Ready,
-			Stopping,
-			Stopped
+	public Status CurrentStatus {
+		get => status;
+		set {
+			status = value;
+			OnPropertyChanged(nameof(StatusText));
 		}
 	}
+
+	public string StatusText {
+		get {
+			return CurrentStatus switch {
+				Status.Starting => "STARTING",
+				Status.Ready    => "READY",
+				Status.Stopping => "STOPPING",
+				Status.Stopped  => "STOPPED",
+				_               => ""
+			};
+		}
+	}
+
+	[Obsolete("Designer")]
+	public StatusBarModel() : this(new DatabaseStatistics()) {}
+
+	public StatusBarModel(DatabaseStatistics databaseStatistics) {
+		this.DatabaseStatistics = databaseStatistics;
+	}
+
+	public enum Status {
+		Starting,
+		Ready,
+		Stopping,
+		Stopped
+	}
 }

app/Desktop/Main/MainContentScreen.axaml

@@ -1,91 +0,0 @@
-<UserControl xmlns="https://github.com/avaloniaui"
-             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
-             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
-             xmlns:main="clr-namespace:DHT.Desktop.Main"
-             xmlns:controls="clr-namespace:DHT.Desktop.Main.Controls"
-             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
-             x:Class="DHT.Desktop.Main.MainContentScreen">
-
-    <Design.DataContext>
-        <main:MainContentScreenModel />
-    </Design.DataContext>
-
-    <UserControl.Styles>
-        <Style Selector="TabControl ItemsPresenter > WrapPanel">
-            <Setter Property="Background" Value="#546A9F" />
-        </Style>
-        <Style Selector="TabItem">
-            <Setter Property="Foreground" Value="#E9E9E9" />
-            <Setter Property="FontSize" Value="20" />
-        </Style>
-        <Style Selector="TabItem[TabStripPlacement=Left] /template/ ContentPresenter#PART_ContentPresenter">
-            <Setter Property="Margin" Value="5 0" />
-        </Style>
-        <Style Selector="TabItem:pointerover">
-            <Setter Property="Background" Value="#1F2E45" />
-        </Style>
-        <Style Selector="TabItem:pointerover /template/ Border">
-            <Setter Property="Background" Value="#1F2E45" />
-        </Style>
-        <Style Selector="TabItem:pointerover > TextBlock">
-            <Setter Property="Foreground" Value="#E9E9E9" />
-        </Style>
-        <Style Selector="TabItem:selected:pointerover /template/ Border">
-            <Setter Property="Background" Value="#FFFFFF" />
-        </Style>
-        <Style Selector="TabItem:selected:pointerover > TextBlock">
-            <Setter Property="Foreground" Value="#1A2234" />
-        </Style>
-        <Style Selector="TabItem:selected">
-            <Setter Property="Foreground" Value="#1A2234" />
-            <Setter Property="Background" Value="#FFFFFF" />
-        </Style>
-        <Style Selector="TabItem:selected /template/ Border#PART_SelectedPipe">
-            <Setter Property="IsVisible" Value="False" />
-        </Style>
-        <Style Selector="TabItem:disabled > TextBlock">
-            <Setter Property="Foreground" Value="#B2B2B2" />
-            <Setter Property="TextDecorations" Value="Strikethrough" />
-        </Style>
-        <Style Selector="TabItem.first">
-            <Setter Property="Margin" Value="0 13 0 0" />
-        </Style>
-        <Style Selector="TabControl">
-            <Setter Property="Padding" Value="0" />
-        </Style>
-        <Style Selector="ContentPresenter.page">
-            <Setter Property="Margin" Value="15 21" />
-        </Style>
-    </UserControl.Styles>
-
-    <DockPanel>
-        <TabControl x:Name="TabControl" TabStripPlacement="Left">
-            <TabItem x:Name="TabDatabase" Header="Database" Classes="first">
-                <DockPanel>
-                    <controls:StatusBar DataContext="{Binding StatusBarModel}" DockPanel.Dock="Bottom" />
-                    <ScrollViewer>
-                        <ContentPresenter Content="{Binding DatabasePage}" Classes="page" />
-                    </ScrollViewer>
-                </DockPanel>
-            </TabItem>
-            <TabItem x:Name="TabTracking" Header="Tracking">
-                <DockPanel>
-                    <controls:StatusBar DataContext="{Binding StatusBarModel}" DockPanel.Dock="Bottom" />
-                    <ScrollViewer>
-                        <ContentPresenter Content="{Binding TrackingPage}" Classes="page" />
-                    </ScrollViewer>
-                </DockPanel>
-            </TabItem>
-            <TabItem x:Name="TabViewer" Header="Viewer">
-                <DockPanel>
-                    <controls:StatusBar DataContext="{Binding StatusBarModel}" DockPanel.Dock="Bottom" />
-                    <ScrollViewer>
-                        <ContentPresenter Content="{Binding ViewerPage}" Classes="page" />
-                    </ScrollViewer>
-                </DockPanel>
-            </TabItem>
-        </TabControl>
-    </DockPanel>
-
-</UserControl>

app/Desktop/Main/MainContentScreen.axaml.cs

@@ -1,14 +0,0 @@
-using Avalonia.Controls;
-using Avalonia.Markup.Xaml;
-
-namespace DHT.Desktop.Main {
-	public class MainContentScreen : UserControl {
-		public MainContentScreen() {
-			InitializeComponent();
-		}
-
-		private void InitializeComponent() {
-			AvaloniaXamlLoader.Load(this);
-		}
-	}
-}

app/Desktop/Main/MainContentScreenModel.cs

@@ -1,57 +0,0 @@
-using System;
-using Avalonia.Controls;
-using DHT.Desktop.Main.Controls;
-using DHT.Desktop.Main.Pages;
-using DHT.Server.Database;
-using DHT.Server.Service;
-
-namespace DHT.Desktop.Main {
-	public class MainContentScreenModel : IDisposable {
-		public DatabasePage DatabasePage { get; }
-		private DatabasePageModel DatabasePageModel { get; }
-
-		public TrackingPage TrackingPage { get; }
-		private TrackingPageModel TrackingPageModel { get; }
-
-		public ViewerPage ViewerPage { get; }
-		private ViewerPageModel ViewerPageModel { get; }
-
-		public StatusBarModel StatusBarModel { get; }
-
-		public event EventHandler? DatabaseClosed {
-			add { DatabasePageModel.DatabaseClosed += value; }
-			remove { DatabasePageModel.DatabaseClosed -= value; }
-		}
-
-		[Obsolete("Designer")]
-		public MainContentScreenModel() : this(null!, DummyDatabaseFile.Instance) {}
-
-		public MainContentScreenModel(Window window, IDatabaseFile db) {
-			DatabasePageModel = new DatabasePageModel(window, db);
-			DatabasePage = new DatabasePage { DataContext = DatabasePageModel };
-
-			TrackingPageModel = new TrackingPageModel(window, db);
-			TrackingPage = new TrackingPage { DataContext = TrackingPageModel };
-
-			ViewerPageModel = new ViewerPageModel(window, db);
-			ViewerPage = new ViewerPage { DataContext = ViewerPageModel };
-
-			StatusBarModel = new StatusBarModel(db.Statistics);
-			TrackingPageModel.ServerStatusChanged += TrackingPageModelOnServerStatusChanged;
-			StatusBarModel.CurrentStatus = ServerLauncher.IsRunning ? StatusBarModel.Status.Ready : StatusBarModel.Status.Stopped;
-		}
-
-		public void Initialize() {
-			TrackingPageModel.Initialize();
-		}
-
-		private void TrackingPageModelOnServerStatusChanged(object? sender, StatusBarModel.Status e) {
-			StatusBarModel.CurrentStatus = e;
-		}
-
-		public void Dispose() {
-			TrackingPageModel.Dispose();
-			GC.SuppressFinalize(this);
-		}
-	}
-}

app/Desktop/Main/MainWindow.axaml

@@ -5,18 +5,18 @@
         xmlns:main="clr-namespace:DHT.Desktop.Main"
         mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
         x:Class="DHT.Desktop.Main.MainWindow"
-        Title="Discord History Tracker"
+        Title="{Binding Title}"
         Icon="avares://DiscordHistoryTracker/Resources/icon.ico"
         Width="800" Height="500"
-        MinWidth="480" MinHeight="240"
-        WindowStartupLocation="CenterScreen">
+        MinWidth="520" MinHeight="300"
+        WindowStartupLocation="CenterScreen"
+        Closed="OnClosed">
 
     <Design.DataContext>
         <main:MainWindowModel />
     </Design.DataContext>
 
     <Panel>
-        <ContentPresenter Content="{Binding WelcomeScreen}" IsVisible="{Binding ShowWelcomeScreen}" />
-        <ContentPresenter Content="{Binding MainContentScreen}" IsVisible="{Binding ShowMainContentScreen}" />
+        <ContentPresenter Content="{Binding CurrentScreen}" />
     </Panel>
 </Window>

app/Desktop/Main/MainWindow.axaml.cs

@@ -1,26 +1,36 @@
-using Avalonia;
+using System;
+using System.Diagnostics.CodeAnalysis;
+using System.IO;
 using Avalonia.Controls;
-using Avalonia.Markup.Xaml;
+using DHT.Desktop.Main.Pages;
 using JetBrains.Annotations;
 
-namespace DHT.Desktop.Main {
-	public class MainWindow : Window {
-		[UsedImplicitly]
-		public MainWindow() {
-			InitializeComponent(Arguments.Empty);
+namespace DHT.Desktop.Main;
+
+[SuppressMessage("ReSharper", "MemberCanBeInternal")]
+public sealed partial class MainWindow : Window {
+	[UsedImplicitly]
+	public MainWindow() {
+		InitializeComponent();
+		DataContext = new MainWindowModel(this, Arguments.Empty);
+	}
+
+	internal MainWindow(Arguments args) {
+		InitializeComponent();
+		DataContext = new MainWindowModel(this, args);
+	}
+
+	public void OnClosed(object? sender, EventArgs e) {
+		if (DataContext is IDisposable disposable) {
+			disposable.Dispose();
 		}
 
-		public MainWindow(Arguments args) {
-			InitializeComponent(args);
-		}
-
-		private void InitializeComponent(Arguments args) {
-			AvaloniaXamlLoader.Load(this);
-			DataContext = new MainWindowModel(this, args);
-
-			#if DEBUG
-			this.AttachDevTools();
-			#endif
+		foreach (var temporaryFile in ViewerPageModel.TemporaryFiles) {
+			try {
+				File.Delete(temporaryFile);
+			} catch (Exception) {
+				// ignored
+			}
 		}
 	}
 }

app/Desktop/Main/MainWindowModel.cs

@@ -4,98 +4,113 @@ using System.IO;
 using System.Runtime.InteropServices;
 using System.Threading.Tasks;
 using Avalonia.Controls;
-using DHT.Desktop.Dialogs;
-using DHT.Desktop.Main.Pages;
-using DHT.Desktop.Models;
+using DHT.Desktop.Dialogs.Message;
+using DHT.Desktop.Main.Screens;
+using DHT.Desktop.Server;
 using DHT.Server.Database;
+using DHT.Utils.Models;
 
-namespace DHT.Desktop.Main {
-	public class MainWindowModel : BaseModel {
-		public WelcomeScreen WelcomeScreen { get; }
-		private WelcomeScreenModel WelcomeScreenModel { get; }
+namespace DHT.Desktop.Main;
 
-		public MainContentScreen? MainContentScreen { get; private set; }
-		private MainContentScreenModel? MainContentScreenModel { get; set; }
+sealed class MainWindowModel : BaseModel, IDisposable {
+	private const string DefaultTitle = "Discord History Tracker";
 
-		public bool ShowWelcomeScreen => db == null;
-		public bool ShowMainContentScreen => db != null;
+	public string Title { get; private set; } = DefaultTitle;
 
-		private readonly Window window;
+	public UserControl CurrentScreen { get; private set; }
 
-		private IDatabaseFile? db;
+	private readonly WelcomeScreen welcomeScreen;
+	private readonly WelcomeScreenModel welcomeScreenModel;
 
-		[Obsolete("Designer")]
-		public MainWindowModel() : this(null!, Arguments.Empty) {}
+	private MainContentScreen? mainContentScreen;
+	private MainContentScreenModel? mainContentScreenModel;
 
-		public MainWindowModel(Window window, Arguments args) {
-			this.window = window;
+	private readonly Window window;
 
-			WelcomeScreenModel = new WelcomeScreenModel(window);
-			WelcomeScreen = new WelcomeScreen { DataContext = WelcomeScreenModel };
+	private IDatabaseFile? db;
 
-			WelcomeScreenModel.PropertyChanged += WelcomeScreenModelOnPropertyChanged;
+	[Obsolete("Designer")]
+	public MainWindowModel() : this(null!, Arguments.Empty) {}
 
-			var dbFile = args.DatabaseFile;
-			if (!string.IsNullOrWhiteSpace(dbFile)) {
-				async void OnWindowOpened(object? o, EventArgs eventArgs) {
-					window.Opened -= OnWindowOpened;
+	public MainWindowModel(Window window, Arguments args) {
+		this.window = window;
 
-					// https://github.com/AvaloniaUI/Avalonia/issues/3071
-					if (!RuntimeInformation.IsOSPlatform(OSPlatform.Windows)) {
-						await Task.Delay(500);
-					}
+		welcomeScreenModel = new WelcomeScreenModel(window);
+		welcomeScreen = new WelcomeScreen { DataContext = welcomeScreenModel };
+		CurrentScreen = welcomeScreen;
 
-					if (File.Exists(dbFile)) {
-						await WelcomeScreenModel.OpenOrCreateDatabaseFromPath(dbFile);
-					}
-					else {
-						await Dialog.ShowOk(window, "Database Error", "Database file not found:\n" + dbFile);
-					}
+		welcomeScreenModel.PropertyChanged += WelcomeScreenModelOnPropertyChanged;
+
+		var dbFile = args.DatabaseFile;
+		if (!string.IsNullOrWhiteSpace(dbFile)) {
+			async void OnWindowOpened(object? o, EventArgs eventArgs) {
+				window.Opened -= OnWindowOpened;
+
+				// https://github.com/AvaloniaUI/Avalonia/issues/3071
+				if (!RuntimeInformation.IsOSPlatform(OSPlatform.Windows)) {
+					await Task.Delay(500);
 				}
 
-				window.Opened += OnWindowOpened;
-			}
-
-			if (args.ServerPort != null) {
-				TrackingPageModel.ServerPort = args.ServerPort.ToString()!;
-			}
-
-			if (args.ServerToken != null) {
-				TrackingPageModel.ServerToken = args.ServerToken;
-			}
-		}
-
-		private void WelcomeScreenModelOnPropertyChanged(object? sender, PropertyChangedEventArgs e) {
-			if (e.PropertyName == nameof(WelcomeScreenModel.Db)) {
-				if (MainContentScreenModel != null) {
-					MainContentScreenModel.DatabaseClosed -= MainContentScreenModelOnDatabaseClosed;
-					MainContentScreenModel.Dispose();
-				}
-
-				db?.Dispose();
-				db = WelcomeScreenModel.Db;
-
-				if (db == null) {
-					MainContentScreenModel = null;
-					MainContentScreen = null;
+				if (File.Exists(dbFile)) {
+					await welcomeScreenModel.OpenOrCreateDatabaseFromPath(dbFile);
 				}
 				else {
-					MainContentScreenModel = new MainContentScreenModel(window, db);
-					MainContentScreenModel.Initialize();
-					MainContentScreenModel.DatabaseClosed += MainContentScreenModelOnDatabaseClosed;
-					MainContentScreen = new MainContentScreen { DataContext = MainContentScreenModel };
-					OnPropertyChanged(nameof(MainContentScreen));
+					await Dialog.ShowOk(window, "Database Error", "Database file not found:\n" + dbFile);
 				}
-
-				OnPropertyChanged(nameof(ShowWelcomeScreen));
-				OnPropertyChanged(nameof(ShowMainContentScreen));
-
-				window.Focus();
 			}
+
+			window.Opened += OnWindowOpened;
 		}
 
-		private void MainContentScreenModelOnDatabaseClosed(object? sender, EventArgs e) {
-			WelcomeScreenModel.CloseDatabase();
+		if (args.ServerPort != null) {
+			ServerManager.Port = args.ServerPort.Value;
+		}
+
+		if (args.ServerToken != null) {
+			ServerManager.Token = args.ServerToken;
 		}
 	}
+
+	private async void WelcomeScreenModelOnPropertyChanged(object? sender, PropertyChangedEventArgs e) {
+		if (e.PropertyName == nameof(welcomeScreenModel.Db)) {
+			if (mainContentScreenModel != null) {
+				mainContentScreenModel.DatabaseClosed -= MainContentScreenModelOnDatabaseClosed;
+				mainContentScreenModel.Dispose();
+			}
+
+			db?.Dispose();
+			db = welcomeScreenModel.Db;
+
+			if (db == null) {
+				Title = DefaultTitle;
+				mainContentScreenModel = null;
+				mainContentScreen = null;
+				CurrentScreen = welcomeScreen;
+			}
+			else {
+				Title = Path.GetFileName(db.Path) + " - " + DefaultTitle;
+				mainContentScreenModel = new MainContentScreenModel(window, db);
+				await mainContentScreenModel.Initialize();
+				mainContentScreenModel.DatabaseClosed += MainContentScreenModelOnDatabaseClosed;
+				mainContentScreen = new MainContentScreen { DataContext = mainContentScreenModel };
+				CurrentScreen = mainContentScreen;
+			}
+
+			OnPropertyChanged(nameof(CurrentScreen));
+			OnPropertyChanged(nameof(Title));
+
+			window.Focus();
+		}
+	}
+
+	private void MainContentScreenModelOnDatabaseClosed(object? sender, EventArgs e) {
+		welcomeScreenModel.CloseDatabase();
+	}
+
+	public void Dispose() {
+		welcomeScreenModel.Dispose();
+		mainContentScreenModel?.Dispose();
+		db?.Dispose();
+		db = null;
+	}
 }

app/Desktop/Main/Pages/AdvancedPage.axaml

@@ -0,0 +1,25 @@
+<UserControl xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+             xmlns:pages="clr-namespace:DHT.Desktop.Main.Pages"
+             xmlns:controls="clr-namespace:DHT.Desktop.Main.Controls"
+             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
+             x:Class="DHT.Desktop.Main.Pages.AdvancedPage">
+
+    <Design.DataContext>
+        <pages:AdvancedPageModel />
+    </Design.DataContext>
+
+    <StackPanel Orientation="Vertical" Spacing="10">
+        <Expander Header="Internal Server Configuration" IsExpanded="True">
+            <controls:ServerConfigurationPanel DataContext="{Binding ServerConfigurationModel}" />
+        </Expander>
+        <Expander Header="Database Tools" IsExpanded="True">
+            <StackPanel Orientation="Vertical" Spacing="10">
+                <TextBlock TextWrapping="Wrap">Recreates the database to remove any traces of deleted data, which frees up space and prevents forensic recovery.</TextBlock>
+                <Button Command="{Binding VacuumDatabase}">Vacuum Database</Button>
+            </StackPanel>
+        </Expander>
+    </StackPanel>
+</UserControl>

app/Desktop/Main/Pages/AdvancedPage.axaml.cs

@@ -0,0 +1,11 @@
+using System.Diagnostics.CodeAnalysis;
+using Avalonia.Controls;
+
+namespace DHT.Desktop.Main.Pages;
+
+[SuppressMessage("ReSharper", "MemberCanBeInternal")]
+public sealed partial class AdvancedPage : UserControl {
+	public AdvancedPage() {
+		InitializeComponent();
+	}
+}

app/Desktop/Main/Pages/AdvancedPageModel.cs

@@ -0,0 +1,39 @@
+using System;
+using Avalonia.Controls;
+using DHT.Desktop.Dialogs.Message;
+using DHT.Desktop.Main.Controls;
+using DHT.Desktop.Server;
+using DHT.Server.Database;
+using DHT.Utils.Models;
+
+namespace DHT.Desktop.Main.Pages;
+
+sealed class AdvancedPageModel : BaseModel, IDisposable {
+	public ServerConfigurationPanelModel ServerConfigurationModel { get; }
+
+	private readonly Window window;
+	private readonly IDatabaseFile db;
+
+	[Obsolete("Designer")]
+	public AdvancedPageModel() : this(null!, DummyDatabaseFile.Instance, new ServerManager(DummyDatabaseFile.Instance)) {}
+
+	public AdvancedPageModel(Window window, IDatabaseFile db, ServerManager serverManager) {
+		this.window = window;
+		this.db = db;
+
+		ServerConfigurationModel = new ServerConfigurationPanelModel(window, serverManager);
+	}
+
+	public void Initialize() {
+		ServerConfigurationModel.Initialize();
+	}
+
+	public void Dispose() {
+		ServerConfigurationModel.Dispose();
+	}
+
+	public async void VacuumDatabase() {
+		db.Vacuum();
+		await Dialog.ShowOk(window, "Vacuum Database", "Done.");
+	}
+}

app/Desktop/Main/Pages/AttachmentsPage.axaml

@@ -0,0 +1,54 @@
+<UserControl xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+             xmlns:pages="clr-namespace:DHT.Desktop.Main.Pages"
+             xmlns:controls="clr-namespace:DHT.Desktop.Main.Controls"
+             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
+             x:Class="DHT.Desktop.Main.Pages.AttachmentsPage">
+
+    <Design.DataContext>
+        <pages:AttachmentsPageModel />
+    </Design.DataContext>
+
+    <UserControl.Styles>
+        <Style Selector="Expander">
+            <Setter Property="Margin" Value="0 5 0 0" />
+        </Style>
+        <Style Selector="DataGridColumnHeader">
+            <Setter Property="FontWeight" Value="Medium" />
+        </Style>
+        <Style Selector="DataGridColumnHeader:nth-child(2)">
+            <Setter Property="HorizontalContentAlignment" Value="Right" />
+        </Style>
+        <Style Selector="DataGridColumnHeader:nth-child(3)">
+            <Setter Property="HorizontalContentAlignment" Value="Right" />
+        </Style>
+        <Style Selector="DataGridCell.right">
+            <Setter Property="HorizontalContentAlignment" Value="Right" />
+        </Style>
+    </UserControl.Styles>
+
+    <StackPanel Orientation="Vertical" Spacing="20">
+        <DockPanel>
+            <Button Command="{Binding OnClickToggleDownload}" Content="{Binding ToggleDownloadButtonText}" IsEnabled="{Binding IsToggleDownloadButtonEnabled}" DockPanel.Dock="Left" />
+            <TextBlock Text="{Binding DownloadMessage}" Margin="10 0 0 0" VerticalAlignment="Center" DockPanel.Dock="Left" />
+            <ProgressBar Value="{Binding DownloadProgress}" IsVisible="{Binding IsDownloading}" Margin="15 0" VerticalAlignment="Center" DockPanel.Dock="Right" />
+        </DockPanel>
+        <controls:AttachmentFilterPanel DataContext="{Binding FilterModel}" IsEnabled="{Binding !DataContext.IsDownloading, RelativeSource={RelativeSource AncestorType=UserControl}}" />
+        <StackPanel Orientation="Vertical" Spacing="12">
+            <Expander Header="Download Status" IsExpanded="True">
+                <DataGrid ItemsSource="{Binding StatisticsRows}" AutoGenerateColumns="False" CanUserReorderColumns="False" CanUserResizeColumns="False" CanUserSortColumns="False" IsReadOnly="True">
+                    <DataGrid.Columns>
+                        <DataGridTextColumn Header="State" Binding="{Binding State}" Width="*" />
+                        <DataGridTextColumn Header="Attachments" Binding="{Binding Items, Converter={StaticResource NumberValueConverter}}" Width="*" CellStyleClasses="right" />
+                        <DataGridTextColumn Header="Size" Binding="{Binding Size, Converter={StaticResource BytesValueConverter}}" Width="*" CellStyleClasses="right" />
+                    </DataGrid.Columns>
+                </DataGrid>
+            </Expander>
+            <StackPanel Orientation="Horizontal" Spacing="10">
+                <Button Command="{Binding OnClickRetryFailedDownloads}" IsEnabled="{Binding HasFailedDownloads}">Retry Failed Downloads</Button>
+            </StackPanel>
+        </StackPanel>
+    </StackPanel>
+</UserControl>

app/Desktop/Main/Pages/AttachmentsPage.axaml.cs

@@ -0,0 +1,11 @@
+using System.Diagnostics.CodeAnalysis;
+using Avalonia.Controls;
+
+namespace DHT.Desktop.Main.Pages;
+
+[SuppressMessage("ReSharper", "MemberCanBeInternal")]
+public sealed partial class AttachmentsPage : UserControl {
+	public AttachmentsPage() {
+		InitializeComponent();
+	}
+}

app/Desktop/Main/Pages/AttachmentsPageModel.cs

@@ -0,0 +1,205 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Threading;
+using Avalonia.Threading;
+using DHT.Desktop.Common;
+using DHT.Desktop.Main.Controls;
+using DHT.Server.Data;
+using DHT.Server.Data.Aggregations;
+using DHT.Server.Data.Filters;
+using DHT.Server.Database;
+using DHT.Server.Download;
+using DHT.Utils.Models;
+using DHT.Utils.Tasks;
+
+namespace DHT.Desktop.Main.Pages;
+
+sealed class AttachmentsPageModel : BaseModel, IDisposable {
+	private static readonly DownloadItemFilter EnqueuedItemFilter = new() {
+		IncludeStatuses = new HashSet<DownloadStatus> {
+			DownloadStatus.Enqueued
+		}
+	};
+
+	private bool isThreadDownloadButtonEnabled = true;
+
+	public string ToggleDownloadButtonText => downloadThread == null ? "Start Downloading" : "Stop Downloading";
+
+	public bool IsToggleDownloadButtonEnabled {
+		get => isThreadDownloadButtonEnabled;
+		set => Change(ref isThreadDownloadButtonEnabled, value);
+	}
+
+	public string DownloadMessage { get; set; } = "";
+	public double DownloadProgress => allItemsCount is null or 0 ? 0.0 : 100.0 * doneItemsCount / allItemsCount.Value;
+
+	public AttachmentFilterPanelModel FilterModel { get; }
+
+	private readonly StatisticsRow statisticsEnqueued = new ("Enqueued");
+	private readonly StatisticsRow statisticsDownloaded = new ("Downloaded");
+	private readonly StatisticsRow statisticsFailed = new ("Failed");
+	private readonly StatisticsRow statisticsSkipped = new ("Skipped");
+
+	public List<StatisticsRow> StatisticsRows {
+		get {
+			return new List<StatisticsRow> {
+				statisticsEnqueued,
+				statisticsDownloaded,
+				statisticsFailed,
+				statisticsSkipped
+			};
+		}
+	}
+
+	public bool IsDownloading => downloadThread != null;
+	public bool HasFailedDownloads => statisticsFailed.Items > 0;
+
+	private readonly IDatabaseFile db;
+	private readonly AsyncValueComputer<DownloadStatusStatistics>.Single downloadStatisticsComputer;
+	private BackgroundDownloadThread? downloadThread;
+
+	private int doneItemsCount;
+	private int? allItemsCount;
+
+	public AttachmentsPageModel() : this(DummyDatabaseFile.Instance) {}
+
+	public AttachmentsPageModel(IDatabaseFile db) {
+		this.db = db;
+		this.FilterModel = new AttachmentFilterPanelModel(db);
+
+		this.downloadStatisticsComputer = AsyncValueComputer<DownloadStatusStatistics>.WithResultProcessor(UpdateStatistics).WithOutdatedResults().BuildWithComputer(db.GetDownloadStatusStatistics);
+		this.downloadStatisticsComputer.Recompute();
+
+		db.Statistics.PropertyChanged += OnDbStatisticsChanged;
+	}
+
+	public void Dispose() {
+		db.Statistics.PropertyChanged -= OnDbStatisticsChanged;
+
+		FilterModel.Dispose();
+		DisposeDownloadThread();
+	}
+
+	private void OnDbStatisticsChanged(object? sender, PropertyChangedEventArgs e) {
+		if (e.PropertyName == nameof(DatabaseStatistics.TotalAttachments)) {
+			if (IsDownloading) {
+				EnqueueDownloadItems();
+			}
+			else {
+				downloadStatisticsComputer.Recompute();
+			}
+		}
+		else if (e.PropertyName == nameof(DatabaseStatistics.TotalDownloads)) {
+			downloadStatisticsComputer.Recompute();
+		}
+	}
+
+	private void EnqueueDownloadItems() {
+		var filter = FilterModel.CreateFilter();
+		filter.DownloadItemRule = AttachmentFilter.DownloadItemRules.OnlyNotPresent;
+		db.EnqueueDownloadItems(filter);
+
+		downloadStatisticsComputer.Recompute();
+	}
+
+	private void UpdateStatistics(DownloadStatusStatistics statusStatistics) {
+		var hadFailedDownloads = HasFailedDownloads;
+
+		statisticsEnqueued.Items = statusStatistics.EnqueuedCount;
+		statisticsEnqueued.Size = statusStatistics.EnqueuedSize;
+
+		statisticsDownloaded.Items = statusStatistics.SuccessfulCount;
+		statisticsDownloaded.Size = statusStatistics.SuccessfulSize;
+
+		statisticsFailed.Items = statusStatistics.FailedCount;
+		statisticsFailed.Size = statusStatistics.FailedSize;
+
+		statisticsSkipped.Items = statusStatistics.SkippedCount;
+		statisticsSkipped.Size = statusStatistics.SkippedSize;
+
+		OnPropertyChanged(nameof(StatisticsRows));
+
+		if (hadFailedDownloads != HasFailedDownloads) {
+			OnPropertyChanged(nameof(HasFailedDownloads));
+		}
+
+		allItemsCount = doneItemsCount + statisticsEnqueued.Items;
+		UpdateDownloadMessage();
+	}
+
+	private void UpdateDownloadMessage() {
+		DownloadMessage = IsDownloading ? doneItemsCount.Format() + " / " + (allItemsCount?.Format() ?? "?") : "";
+
+		OnPropertyChanged(nameof(DownloadMessage));
+		OnPropertyChanged(nameof(DownloadProgress));
+	}
+
+	private void DownloadThreadOnOnItemFinished(object? sender, DownloadItem e) {
+		Interlocked.Increment(ref doneItemsCount);
+
+		Dispatcher.UIThread.Invoke(UpdateDownloadMessage);
+		downloadStatisticsComputer.Recompute();
+	}
+
+	private void DownloadThreadOnOnServerStopped(object? sender, EventArgs e) {
+		downloadStatisticsComputer.Recompute();
+		IsToggleDownloadButtonEnabled = true;
+	}
+
+	public void OnClickToggleDownload() {
+		if (downloadThread == null) {
+			EnqueueDownloadItems();
+			downloadThread = new BackgroundDownloadThread(db);
+			downloadThread.OnItemFinished += DownloadThreadOnOnItemFinished;
+			downloadThread.OnServerStopped += DownloadThreadOnOnServerStopped;
+		}
+		else {
+			IsToggleDownloadButtonEnabled = false;
+			DisposeDownloadThread();
+
+			db.RemoveDownloadItems(EnqueuedItemFilter, FilterRemovalMode.RemoveMatching);
+
+			doneItemsCount = 0;
+			allItemsCount = null;
+			UpdateDownloadMessage();
+		}
+
+		OnPropertyChanged(nameof(ToggleDownloadButtonText));
+		OnPropertyChanged(nameof(IsDownloading));
+	}
+
+	public void OnClickRetryFailedDownloads() {
+		var allExceptFailedFilter = new DownloadItemFilter {
+			IncludeStatuses = new HashSet<DownloadStatus> {
+				DownloadStatus.Enqueued,
+				DownloadStatus.Success
+			}
+		};
+
+		db.RemoveDownloadItems(allExceptFailedFilter, FilterRemovalMode.KeepMatching);
+
+		if (IsDownloading) {
+			EnqueueDownloadItems();
+		}
+	}
+
+	private void DisposeDownloadThread() {
+		if (downloadThread != null) {
+			downloadThread.OnItemFinished -= DownloadThreadOnOnItemFinished;
+			downloadThread.StopThread();
+		}
+
+		downloadThread = null;
+	}
+
+	public sealed class StatisticsRow {
+		public string State { get; }
+		public int Items { get; set; }
+		public ulong? Size { get; set; }
+
+		public StatisticsRow(string state) {
+			State = state;
+		}
+	}
+}

app/Desktop/Main/Pages/DatabasePage.axaml

@@ -19,11 +19,12 @@
     <StackPanel Spacing="10">
         <DockPanel>
             <Button Command="{Binding CloseDatabase}" DockPanel.Dock="Right">Close Database</Button>
-            <TextBox Text="{Binding Db.Path}" Width="NaN" Margin="0 0 10 0" IsEnabled="True" />
+            <TextBox Text="{Binding Db.Path}" Width="NaN" Margin="0 0 10 0" IsReadOnly="True" />
         </DockPanel>
         <WrapPanel>
             <Button Command="{Binding OpenDatabaseFolder}">Open Database Folder</Button>
             <Button Command="{Binding MergeWithDatabase}">Merge with Database(s)...</Button>
+            <Button Command="{Binding ImportLegacyArchive}">Import Legacy Archive(s)...</Button>
         </WrapPanel>
     </StackPanel>
 

app/Desktop/Main/Pages/DatabasePage.axaml.cs

@@ -1,14 +1,11 @@
+using System.Diagnostics.CodeAnalysis;
 using Avalonia.Controls;
-using Avalonia.Markup.Xaml;
 
-namespace DHT.Desktop.Main.Pages {
-	public class DatabasePage : UserControl {
-		public DatabasePage() {
-			InitializeComponent();
-		}
+namespace DHT.Desktop.Main.Pages;
 
-		private void InitializeComponent() {
-			AvaloniaXamlLoader.Load(this);
-		}
+[SuppressMessage("ReSharper", "MemberCanBeInternal")]
+public sealed partial class DatabasePage : UserControl {
+	public DatabasePage() {
+		InitializeComponent();
 	}
 }

app/Desktop/Main/Pages/DatabasePageModel.cs

@@ -1,154 +1,245 @@
 using System;
+using System.Collections.Generic;
 using System.Diagnostics;
 using System.IO;
+using System.Linq;
 using System.Text;
+using System.Threading;
 using System.Threading.Tasks;
 using Avalonia.Controls;
+using Avalonia.Platform.Storage;
+using Avalonia.Threading;
 using DHT.Desktop.Common;
-using DHT.Desktop.Dialogs;
-using DHT.Desktop.Models;
+using DHT.Desktop.Dialogs.File;
+using DHT.Desktop.Dialogs.Message;
+using DHT.Desktop.Dialogs.Progress;
+using DHT.Desktop.Dialogs.TextBox;
+using DHT.Server.Data;
 using DHT.Server.Database;
-using DHT.Server.Logging;
-using DHT.Server.Service;
+using DHT.Server.Database.Import;
+using DHT.Utils.Logging;
+using DHT.Utils.Models;
 
-namespace DHT.Desktop.Main.Pages {
-	public class DatabasePageModel : BaseModel {
-		public IDatabaseFile Db { get; }
+namespace DHT.Desktop.Main.Pages; 
 
-		public event EventHandler? DatabaseClosed;
+sealed class DatabasePageModel : BaseModel {
+	private static readonly Log Log = Log.ForType<DatabasePageModel>();
 
-		private readonly Window window;
+	public IDatabaseFile Db { get; }
 
-		[Obsolete("Designer")]
-		public DatabasePageModel() : this(null!, DummyDatabaseFile.Instance) {}
+	public event EventHandler? DatabaseClosed;
 
-		public DatabasePageModel(Window window, IDatabaseFile db) {
-			this.window = window;
-			this.Db = db;
+	private readonly Window window;
+
+	[Obsolete("Designer")]
+	public DatabasePageModel() : this(null!, DummyDatabaseFile.Instance) {}
+
+	public DatabasePageModel(Window window, IDatabaseFile db) {
+		this.window = window;
+		this.Db = db;
+	}
+
+	public async void OpenDatabaseFolder() {
+		string file = Db.Path;
+		string? folder = Path.GetDirectoryName(file);
+
+		if (folder == null) {
+			return;
 		}
 
-		public async void OpenDatabaseFolder() {
-			string file = Db.Path;
-			string? folder = Path.GetDirectoryName(file);
+		switch (Environment.OSVersion.Platform) {
+			case PlatformID.Win32NT:
+				Process.Start("explorer.exe", "/select,\"" + file + "\"");
+				break;
 
-			if (folder == null) {
-				return;
-			}
+			case PlatformID.Unix:
+				Process.Start("xdg-open", new string[] { folder });
+				break;
 
-			switch (Environment.OSVersion.Platform) {
-				case PlatformID.Win32NT:
-					Process.Start("explorer.exe", "/select,\"" + file + "\"");
-					break;
+			case PlatformID.MacOSX:
+				Process.Start("open", new string[] { folder });
+				break;
 
-				case PlatformID.Unix:
-					Process.Start("xdg-open", new string[] { folder });
-					break;
-
-				case PlatformID.MacOSX:
-					Process.Start("open", new string[] { folder });
-					break;
-
-				default:
-					await Dialog.ShowOk(window, "Feature Not Supported", "This feature is not supported for your operating system.");
-					break;
-			}
-		}
-
-		public async void MergeWithDatabase() {
-			var fileDialog = DatabaseGui.NewOpenDatabaseFileDialog();
-			fileDialog.Directory = Path.GetDirectoryName(Db.Path);
-			fileDialog.AllowMultiple = true;
-
-			string[]? paths = await fileDialog.ShowAsync(window);
-			if (paths == null || paths.Length == 0) {
-				return;
-			}
-
-			ProgressDialog progressDialog = new ProgressDialog();
-			progressDialog.DataContext = new ProgressDialogModel(async callback => await MergeWithDatabaseFromPaths(Db, paths, progressDialog, callback)) {
-				Title = "Database Merge"
-			};
-
-			await progressDialog.ShowDialog(window);
-		}
-
-		public void CloseDatabase() {
-			ServerLauncher.Stop();
-			DatabaseClosed?.Invoke(this, EventArgs.Empty);
-		}
-
-		private static async Task MergeWithDatabaseFromPaths(IDatabaseFile target, string[] paths, ProgressDialog dialog, IProgressCallback callback) {
-			int total = paths.Length;
-
-			DialogResult.YesNo? upgradeResult = null;
-
-			async Task<bool> CheckCanUpgradeDatabase() {
-				upgradeResult ??= total > 1
-					                  ? await DatabaseGui.ShowCanUpgradeMultipleDatabaseDialog(dialog)
-					                  : await DatabaseGui.ShowCanUpgradeDatabaseDialog(dialog);
-
-				return DialogResult.YesNo.Yes == upgradeResult;
-			}
-
-			var oldStatistics = target.Statistics.Clone();
-			int successful = 0;
-			int finished = 0;
-
-			foreach (string path in paths) {
-				await callback.Update(Path.GetFileName(path), finished, total);
-				++finished;
-
-				if (!File.Exists(path)) {
-					await Dialog.ShowOk(dialog, "Database Error", "Database '" + Path.GetFileName(path) + "' no longer exists.");
-					continue;
-				}
-
-				IDatabaseFile? db = await DatabaseGui.TryOpenOrCreateDatabaseFromPath(path, dialog, CheckCanUpgradeDatabase);
-				if (db == null) {
-					continue;
-				}
-
-				try {
-					target.AddFrom(db);
-				} catch (Exception ex) {
-					Log.Error(ex);
-					await Dialog.ShowOk(dialog, "Database Error", "Database '" + Path.GetFileName(path) + "' could not be merged: " + ex.Message);
-					continue;
-				} finally {
-					db.Dispose();
-				}
-
-				++successful;
-			}
-
-			await callback.Update("Done", finished, total);
-
-			if (successful == 0) {
-				await Dialog.ShowOk(dialog, "Database Merge", "Nothing was merged.");
-				return;
-			}
-
-			var newStatistics = target.Statistics;
-			long newServers = newStatistics.TotalServers - oldStatistics.TotalServers;
-			long newChannels = newStatistics.TotalChannels - oldStatistics.TotalChannels;
-			long newMessages = newStatistics.TotalMessages - oldStatistics.TotalMessages;
-
-			StringBuilder message = new StringBuilder();
-			message.Append("Processed ");
-
-			if (successful == total) {
-				message.Append(successful.Pluralize("database file"));
-			}
-			else {
-				message.Append(successful.Format()).Append(" out of ").Append(total.Pluralize("database file"));
-			}
-
-			message.Append(" and added:\n\n  \u2022 ");
-			message.Append(newServers.Pluralize("server")).Append("\n  \u2022 ");
-			message.Append(newChannels.Pluralize("channel")).Append("\n  \u2022 ");
-			message.Append(newMessages.Pluralize("message"));
-
-			await Dialog.ShowOk(dialog, "Database Merge", message.ToString());
+			default:
+				await Dialog.ShowOk(window, "Feature Not Supported", "This feature is not supported for your operating system.");
+				break;
 		}
 	}
+
+	public void CloseDatabase() {
+		DatabaseClosed?.Invoke(this, EventArgs.Empty);
+	}
+
+	public async void MergeWithDatabase() {
+		var paths = await DatabaseGui.NewOpenDatabaseFilesDialog(window, Path.GetDirectoryName(Db.Path));
+		if (paths.Length == 0) {
+			return;
+		}
+
+		ProgressDialog progressDialog = new ProgressDialog();
+		progressDialog.DataContext = new ProgressDialogModel(async callback => await MergeWithDatabaseFromPaths(Db, paths, progressDialog, callback)) {
+			Title = "Database Merge"
+		};
+
+		await progressDialog.ShowDialog(window);
+	}
+
+	private static async Task MergeWithDatabaseFromPaths(IDatabaseFile target, string[] paths, ProgressDialog dialog, IProgressCallback callback) {
+		int total = paths.Length;
+
+		DialogResult.YesNo? upgradeResult = null;
+
+		async Task<bool> CheckCanUpgradeDatabase() {
+			upgradeResult ??= total > 1
+				                  ? await DatabaseGui.ShowCanUpgradeMultipleDatabaseDialog(dialog)
+				                  : await DatabaseGui.ShowCanUpgradeDatabaseDialog(dialog);
+
+			return DialogResult.YesNo.Yes == upgradeResult;
+		}
+
+		await PerformImport(target, paths, dialog, callback, "Database Merge", "Database Error", "database file", async path => {
+			SynchronizationContext? prevSyncContext = SynchronizationContext.Current;
+			SynchronizationContext.SetSynchronizationContext(new AvaloniaSynchronizationContext());
+			IDatabaseFile? db = await DatabaseGui.TryOpenOrCreateDatabaseFromPath(path, dialog, CheckCanUpgradeDatabase);
+			SynchronizationContext.SetSynchronizationContext(prevSyncContext);
+
+			if (db == null) {
+				return false;
+			}
+
+			try {
+				target.AddFrom(db);
+				return true;
+			} finally {
+				db.Dispose();
+			}
+		});
+	}
+
+	public async void ImportLegacyArchive() {
+		var paths = await window.StorageProvider.OpenFiles(new FilePickerOpenOptions {
+			Title = "Open Legacy DHT Archive",
+			SuggestedStartLocation = await FileDialogs.GetSuggestedStartLocation(window, Path.GetDirectoryName(Db.Path)),
+			AllowMultiple = true
+		});
+			
+		if (paths.Length == 0) {
+			return;
+		}
+
+		ProgressDialog progressDialog = new ProgressDialog();
+		progressDialog.DataContext = new ProgressDialogModel(async callback => await ImportLegacyArchiveFromPaths(Db, paths, progressDialog, callback)) {
+			Title = "Legacy Archive Import"
+		};
+
+		await progressDialog.ShowDialog(window);
+	}
+
+	private static async Task ImportLegacyArchiveFromPaths(IDatabaseFile target, string[] paths, ProgressDialog dialog, IProgressCallback callback) {
+		var fakeSnowflake = new FakeSnowflake();
+
+		await PerformImport(target, paths, dialog, callback, "Legacy Archive Import", "Legacy Archive Error", "archive file", async path => {
+			await using var jsonStream = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.Read);
+				
+			return await LegacyArchiveImport.Read(jsonStream, target, fakeSnowflake, async servers => {
+				SynchronizationContext? prevSyncContext = SynchronizationContext.Current;
+				SynchronizationContext.SetSynchronizationContext(new AvaloniaSynchronizationContext());
+				Dictionary<DHT.Server.Data.Server, ulong>? result = await Dispatcher.UIThread.InvokeAsync(() => AskForServerIds(dialog, servers));
+				SynchronizationContext.SetSynchronizationContext(prevSyncContext);
+				return result;
+			});
+		});
+	}
+
+	private static async Task<Dictionary<DHT.Server.Data.Server, ulong>?> AskForServerIds(Window window, DHT.Server.Data.Server[] servers) {
+		static bool IsValidSnowflake(string value) {
+			return string.IsNullOrEmpty(value) || ulong.TryParse(value, out _);
+		}
+			
+		var items = new List<TextBoxItem<DHT.Server.Data.Server>>();
+
+		foreach (var server in servers.OrderBy(static server => server.Type).ThenBy(static server => server.Name)) {
+			items.Add(new TextBoxItem<DHT.Server.Data.Server>(server) {
+				Title = server.Name + " (" + ServerTypes.ToNiceString(server.Type) + ")",
+				ValidityCheck = IsValidSnowflake
+			});
+		}
+
+		var model = new TextBoxDialogModel<DHT.Server.Data.Server>(items) {
+			Title = "Imported Server IDs",
+			Description = "Please fill in the IDs of servers and direct messages. First enable Developer Mode in Discord, then right-click each server or direct message, click 'Copy ID', and paste it into the input field. If a server no longer exists, leave its input field empty to use a random ID."
+		};
+
+		var dialog = new TextBoxDialog { DataContext = model };
+		var result = await dialog.ShowDialog<DialogResult.OkCancel>(window);
+
+		if (result != DialogResult.OkCancel.Ok) {
+			return null;
+		}
+
+		return model.ValidItems
+		            .Where(static item => !string.IsNullOrEmpty(item.Value))
+		            .ToDictionary(static item => item.Item, static item => ulong.Parse(item.Value));
+	}
+
+	private static async Task PerformImport(IDatabaseFile target, string[] paths, ProgressDialog dialog, IProgressCallback callback, string neutralDialogTitle, string errorDialogTitle, string itemName, Func<string, Task<bool>> performImport) {
+		int total = paths.Length;
+		var oldStatistics = target.SnapshotStatistics();
+
+		int successful = 0;
+		int finished = 0;
+
+		foreach (string path in paths) {
+			await callback.Update(Path.GetFileName(path), finished, total);
+			++finished;
+
+			if (!File.Exists(path)) {
+				await Dialog.ShowOk(dialog, errorDialogTitle, "File '" + Path.GetFileName(path) + "' no longer exists.");
+				continue;
+			}
+
+			try {
+				if (await performImport(path)) {
+					++successful;
+				}
+			} catch (Exception ex) {
+				Log.Error(ex);
+				await Dialog.ShowOk(dialog, errorDialogTitle, "File '" + Path.GetFileName(path) + "' could not be imported: " + ex.Message);
+			}
+		}
+
+		await callback.Update("Done", finished, total);
+
+		if (successful == 0) {
+			await Dialog.ShowOk(dialog, neutralDialogTitle, "Nothing was imported.");
+			return;
+		}
+
+		await Dialog.ShowOk(dialog, neutralDialogTitle, GetImportDialogMessage(oldStatistics, target.SnapshotStatistics(), successful, total, itemName));
+	}
+
+	private static string GetImportDialogMessage(DatabaseStatisticsSnapshot oldStatistics, DatabaseStatisticsSnapshot newStatistics, int successfulItems, int totalItems, string itemName) {
+		long newServers = newStatistics.TotalServers - oldStatistics.TotalServers;
+		long newChannels = newStatistics.TotalChannels - oldStatistics.TotalChannels;
+		long newUsers = newStatistics.TotalUsers - oldStatistics.TotalUsers;
+		long newMessages = newStatistics.TotalMessages - oldStatistics.TotalMessages;
+
+		StringBuilder message = new StringBuilder();
+		message.Append("Processed ");
+
+		if (successfulItems == totalItems) {
+			message.Append(successfulItems.Pluralize(itemName));
+		}
+		else {
+			message.Append(successfulItems.Format()).Append(" out of ").Append(totalItems.Pluralize(itemName));
+		}
+
+		message.Append(" and added:\n\n  \u2022 ");
+		message.Append(newServers.Pluralize("server")).Append("\n  \u2022 ");
+		message.Append(newChannels.Pluralize("channel")).Append("\n  \u2022 ");
+		message.Append(newUsers.Pluralize("user")).Append("\n  \u2022 ");
+		message.Append(newMessages.Pluralize("message"));
+
+		return message.ToString();
+	}
 }

app/Desktop/Main/Pages/DebugPage.axaml

@@ -0,0 +1,45 @@
+<UserControl xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+             xmlns:pages="clr-namespace:DHT.Desktop.Main.Pages"
+             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
+             x:Class="DHT.Desktop.Main.Pages.DebugPage">
+    
+    <Design.DataContext>
+        <pages:DebugPageModel />
+    </Design.DataContext>
+
+    <UserControl.Styles>
+        <Style Selector="TextBox">
+            <Setter Property="FontFamily" Value="Consolas,Courier" />
+            <Setter Property="FontSize" Value="15" />
+        </Style>
+        <Style Selector="WrapPanel > StackPanel">
+            <Setter Property="Orientation" Value="Vertical" />
+            <Setter Property="Margin" Value="0 0 10 10" />
+        </Style>
+    </UserControl.Styles>
+
+    <StackPanel Orientation="Vertical" Spacing="10">
+        <Expander Header="Generate Random Data" IsExpanded="True">
+            <WrapPanel>
+                <StackPanel>
+                    <Label Target="Channels">Channels</Label>
+                    <TextBox x:Name="Channels" Width="100" Text="{Binding GenerateChannels}" />
+                </StackPanel>
+                <StackPanel>
+                    <Label Target="Users">Users</Label>
+                    <TextBox x:Name="Users" Width="100" Text="{Binding GenerateUsers}" />
+                </StackPanel>
+                <StackPanel>
+                    <Label Target="Messages">Messages</Label>
+                    <TextBox x:Name="Messages" Width="100" Text="{Binding GenerateMessages}" />
+                </StackPanel>
+                <StackPanel VerticalAlignment="Bottom">
+                    <Button Command="{Binding OnClickAddRandomDataToDatabase}">Add to Database</Button>
+                </StackPanel>
+            </WrapPanel>
+        </Expander>
+    </StackPanel>
+</UserControl>

app/Desktop/Main/Pages/DebugPage.axaml.cs

@@ -0,0 +1,11 @@
+using System.Diagnostics.CodeAnalysis;
+using Avalonia.Controls;
+
+namespace DHT.Desktop.Main.Pages;
+
+[SuppressMessage("ReSharper", "MemberCanBeInternal")]
+public sealed partial class DebugPage : UserControl {
+	public DebugPage() {
+		InitializeComponent();
+	}
+}

app/Desktop/Main/Pages/DebugPageModel.cs

@@ -0,0 +1,185 @@
+#if DEBUG
+using System;
+using System.Collections.Immutable;
+using System.Linq;
+using System.Threading.Tasks;
+using Avalonia.Controls;
+using DHT.Desktop.Dialogs.Message;
+using DHT.Desktop.Dialogs.Progress;
+using DHT.Server.Data;
+using DHT.Server.Database;
+using DHT.Server.Service;
+using DHT.Utils.Models;
+
+namespace DHT.Desktop.Main.Pages {
+	sealed class DebugPageModel : BaseModel {
+		public string GenerateChannels { get; set; } = "0";
+		public string GenerateUsers { get; set; } = "0";
+		public string GenerateMessages { get; set; } = "0";
+
+		private readonly Window window;
+		private readonly IDatabaseFile db;
+
+		[Obsolete("Designer")]
+		public DebugPageModel() : this(null!, DummyDatabaseFile.Instance) {}
+
+		public DebugPageModel(Window window, IDatabaseFile db) {
+			this.window = window;
+			this.db = db;
+		}
+
+		public async void OnClickAddRandomDataToDatabase() {
+			if (!int.TryParse(GenerateChannels, out int channels) || channels < 1) {
+				await Dialog.ShowOk(window, "Generate Random Data", "Amount of channels must be at least 1!");
+				return;
+			}
+
+			if (!int.TryParse(GenerateUsers, out int users) || users < 1) {
+				await Dialog.ShowOk(window, "Generate Random Data", "Amount of users must be at least 1!");
+				return;
+			}
+
+			if (!int.TryParse(GenerateMessages, out int messages) || messages < 1) {
+				await Dialog.ShowOk(window, "Generate Random Data", "Amount of messages must be at least 1!");
+				return;
+			}
+
+			ProgressDialog progressDialog = new ProgressDialog {
+				DataContext = new ProgressDialogModel(async callback => await GenerateRandomData(channels, users, messages, callback)) {
+					Title = "Generating Random Data"
+				}
+			};
+
+			await progressDialog.ShowDialog(window);
+		}
+
+		private const int BatchSize = 500;
+
+		private async Task GenerateRandomData(int channelCount, int userCount, int messageCount, IProgressCallback callback) {
+			int batchCount = (messageCount + BatchSize - 1) / BatchSize;
+			await callback.Update("Adding messages in batches of " + BatchSize, 0, batchCount);
+
+			var rand = new Random();
+			var server = new DHT.Server.Data.Server {
+				Id = RandomId(rand),
+				Name = RandomName("s"),
+				Type = ServerType.Server,
+			};
+
+			var channels = Enumerable.Range(0, channelCount).Select(i => new Channel {
+				Id = RandomId(rand),
+				Server = server.Id,
+				Name = RandomName("c"),
+				ParentId = null,
+				Position = i,
+				Topic = RandomText(rand, 10),
+				Nsfw = rand.Next(4) == 0,
+			}).ToArray();
+
+			var users = Enumerable.Range(0, userCount).Select(_ => new User {
+				Id = RandomId(rand),
+				Name = RandomName("u"),
+				AvatarUrl = null,
+				Discriminator = rand.Next(0, 9999).ToString(),
+			}).ToArray();
+
+			db.AddServer(server);
+			db.AddUsers(users);
+
+			foreach (var channel in channels) {
+				db.AddChannel(channel);
+			}
+
+			var now = DateTimeOffset.Now;
+			int batchIndex = 0;
+
+			while (messageCount > 0) {
+				int hourOffset = batchIndex;
+
+				var messages = Enumerable.Range(0, Math.Min(messageCount, BatchSize)).Select(i => {
+					DateTimeOffset time = now.AddHours(hourOffset).AddMinutes(i * 60.0 / BatchSize);
+					DateTimeOffset? edit = rand.Next(100) == 0 ? time.AddSeconds(rand.Next(1, 60)) : null;
+
+					var timeMillis = time.ToUnixTimeMilliseconds();
+					var editMillis = edit?.ToUnixTimeMilliseconds();
+
+					return new Message {
+						Id = (ulong) timeMillis,
+						Sender = RandomBiasedIndex(rand, users).Id,
+						Channel = RandomBiasedIndex(rand, channels).Id,
+						Text = RandomText(rand, 100),
+						Timestamp = timeMillis,
+						EditTimestamp = editMillis,
+						RepliedToId = null,
+						Attachments = ImmutableArray<Attachment>.Empty,
+						Embeds = ImmutableArray<Embed>.Empty,
+						Reactions = ImmutableArray<Reaction>.Empty,
+					};
+				}).ToArray();
+
+				db.AddMessages(messages);
+
+				messageCount -= BatchSize;
+				await callback.Update("Adding messages in batches of " + BatchSize, ++batchIndex, batchCount);
+			}
+		}
+
+		private static ulong RandomId(Random rand) {
+			ulong h = unchecked((ulong) rand.Next());
+			ulong l = unchecked((ulong) rand.Next());
+			return (h << 32) | l;
+		}
+
+		private static string RandomName(string prefix) {
+			return prefix + "-" + ServerUtils.GenerateRandomToken(5);
+		}
+
+		private static T RandomBiasedIndex<T>(Random rand, T[] options) {
+			return options[(int) Math.Floor(options.Length * rand.NextDouble() * rand.NextDouble())];
+		}
+
+		private static readonly string[] RandomWords = {
+			"apple", "apricot", "artichoke", "arugula", "asparagus", "avocado",
+			"banana", "bean", "beechnut", "beet", "blackberry", "blackcurrant", "blueberry", "boysenberry", "bramble", "broccoli",
+			"cabbage", "cacao", "cantaloupe", "caper", "carambola", "carrot", "cauliflower", "celery", "chard", "cherry", "chokeberry", "citron", "clementine", "coconut", "corn", "crabapple", "cranberry", "cucumber", "currant",
+			"daikon", "date", "dewberry", "durian",
+			"edamame", "eggplant", "elderberry", "endive",
+			"fig",
+			"garlic", "ginger", "gooseberry", "grape", "grapefruit", "guava",
+			"honeysuckle", "horseradish", "huckleberry",
+			"jackfruit", "jicama",
+			"kale", "kiwi", "kohlrabi", "kumquat",
+			"leek", "lemon", "lentil", "lettuce", "lime",
+			"mandarin", "mango", "mushroom", "myrtle",
+			"nectarine", "nut",
+			"olive", "okra", "onion", "orange",
+			"papaya", "parsnip", "pawpaw", "peach", "pear", "pea", "pepper", "persimmon", "pineapple", "plum", "plantain", "pomegranate", "pomelo", "potato", "prune", "pumpkin",
+			"quandong", "quinoa",
+			"radicchio", "radish", "raisin", "raspberry", "redcurrant", "rhubarb", "rutabaga",
+			"spinach", "strawberry", "squash",
+			"tamarind", "tangerine", "tomatillo", "tomato", "turnip",
+			"vanilla",
+			"watercress", "watermelon",
+			"yam",
+			"zucchini",
+		};
+
+		private static string RandomText(Random rand, int maxWords) {
+			int wordCount = 1 + (int) Math.Floor(maxWords * Math.Pow(rand.NextDouble(), 3));
+			return string.Join(' ', Enumerable.Range(0, wordCount).Select(_ => RandomWords[rand.Next(RandomWords.Length)]));
+		}
+	}
+}
+#else
+using DHT.Utils.Models;
+
+namespace DHT.Desktop.Main.Pages {
+	sealed class DebugPageModel : BaseModel {
+		public string GenerateChannels { get; set; } = "0";
+		public string GenerateUsers { get; set; } = "0";
+		public string GenerateMessages { get; set; } = "0";
+
+		public void OnClickAddRandomDataToDatabase() {}
+	}
+}
+#endif

app/Desktop/Main/Pages/TrackingPage.axaml

@@ -10,51 +10,17 @@
         <pages:TrackingPageModel />
     </Design.DataContext>
 
-    <UserControl.Styles>
-        <Style Selector="TextBox">
-            <Setter Property="FontFamily" Value="Consolas,Courier" />
-            <Setter Property="FontSize" Value="15" />
-        </Style>
-        <Style Selector="WrapPanel > StackPanel">
-            <Setter Property="Orientation" Value="Vertical" />
-            <Setter Property="Margin" Value="0 0 10 10" />
-        </Style>
-    </UserControl.Styles>
-
     <StackPanel Spacing="10">
         <TextBlock TextWrapping="Wrap">
-            To start tracking messages, copy the tracking script and paste it into the console of either the Discord app (Ctrl+Shift+I), or your browser with Discord open.
+            To start tracking messages, copy the tracking script and paste it into the console of either the Discord app, or your browser. The console is usually opened by pressing Ctrl+Shift+I.
         </TextBlock>
-        <StackPanel Orientation="Horizontal" Spacing="10">
+        <StackPanel DockPanel.Dock="Left" Orientation="Horizontal" Spacing="10">
             <Button x:Name="CopyTrackingScript" Click="CopyTrackingScriptButton_OnClick">Copy Tracking Script</Button>
-            <Button Command="{Binding OnClickToggleButton}" Content="{Binding ToggleButtonText}" IsEnabled="{Binding IsToggleButtonEnabled}" />
         </StackPanel>
-        <Expander Header="Advanced Settings">
-            <StackPanel Spacing="10">
-                <TextBlock TextWrapping="Wrap">
-                    The following settings determine how the tracking script communicates with this application. If you change them, you will have to copy and apply the tracking script again.
-                </TextBlock>
-                <WrapPanel>
-                    <StackPanel>
-                        <Label Target="Port">Port</Label>
-                        <TextBox x:Name="Port" Width="70" Text="{Binding InputPort}" />
-                    </StackPanel>
-                    <StackPanel>
-                        <Label Target="Token">Token</Label>
-                        <StackPanel Orientation="Horizontal">
-                            <TextBox x:Name="Token" Width="200" Text="{Binding InputToken}" />
-                        </StackPanel>
-                    </StackPanel>
-                    <StackPanel VerticalAlignment="Bottom">
-                        <Button Command="{Binding OnClickRandomizeToken}">Randomize Token</Button>
-                    </StackPanel>
-                </WrapPanel>
-                <StackPanel Orientation="Horizontal" Spacing="10">
-                    <Button IsEnabled="{Binding HasMadeChanges}" Command="{Binding OnClickApplyChanges}">Apply &amp; Restart</Button>
-                    <Button IsEnabled="{Binding HasMadeChanges}" Command="{Binding OnClickCancelChanges}">Cancel</Button>
-                </StackPanel>
-            </StackPanel>
-        </Expander>
+        <TextBlock TextWrapping="Wrap" Margin="0 5 0 0">
+            By default, the Discord app does not allow opening the console. The button below will change a hidden setting in the Discord app that controls whether the Ctrl+Shift+I shortcut is enabled.
+        </TextBlock>
+        <Button DockPanel.Dock="Right" Command="{Binding OnClickToggleAppDevTools}" Content="{Binding ToggleAppDevToolsButtonText}" IsEnabled="{Binding IsToggleAppDevToolsButtonEnabled}" />
     </StackPanel>
 
 </UserControl>

app/Desktop/Main/Pages/TrackingPage.axaml.cs

@@ -1,37 +1,31 @@
 using System;
+using System.Diagnostics.CodeAnalysis;
 using System.Threading.Tasks;
 using Avalonia.Controls;
 using Avalonia.Interactivity;
-using Avalonia.Markup.Xaml;
 
-namespace DHT.Desktop.Main.Pages {
-	public class TrackingPage : UserControl {
-		private bool isCopyingScript;
+namespace DHT.Desktop.Main.Pages;
 
-		public TrackingPage() {
-			InitializeComponent();
-		}
+[SuppressMessage("ReSharper", "MemberCanBeInternal")]
+public sealed partial class TrackingPage : UserControl {
+	private bool isCopyingScript;
 
-		private void InitializeComponent() {
-			AvaloniaXamlLoader.Load(this);
-		}
+	public TrackingPage() {
+		InitializeComponent();
+	}
 
-		public async void CopyTrackingScriptButton_OnClick(object? sender, RoutedEventArgs e) {
-			if (DataContext is TrackingPageModel model) {
-				var button = this.FindControl<Button>("CopyTrackingScript");
-				var originalText = button.Content;
-				button.MinWidth = button.Bounds.Width;
+	public async void CopyTrackingScriptButton_OnClick(object? sender, RoutedEventArgs e) {
+		if (DataContext is TrackingPageModel model) {
+			var originalText = CopyTrackingScript.Content;
+			CopyTrackingScript.MinWidth = CopyTrackingScript.Bounds.Width;
 
-				await model.OnClickCopyTrackingScript();
+			if (await model.OnClickCopyTrackingScript() && !isCopyingScript) {
+				isCopyingScript = true;
+				CopyTrackingScript.Content = "Script Copied!";
 
-				if (!isCopyingScript) {
-					isCopyingScript = true;
-					button.Content = "Script Copied!";
-
-					await Task.Delay(TimeSpan.FromSeconds(2));
-					button.Content = originalText;
-					isCopyingScript = false;
-				}
+				await Task.Delay(TimeSpan.FromSeconds(2));
+				CopyTrackingScript.Content = originalText;
+				isCopyingScript = false;
 			}
 		}
 	}

app/Desktop/Main/Pages/TrackingPageModel.cs

@@ -1,147 +1,116 @@
 using System;
 using System.Threading.Tasks;
 using System.Web;
-using Avalonia;
 using Avalonia.Controls;
-using DHT.Desktop.Dialogs;
-using DHT.Desktop.Main.Controls;
-using DHT.Desktop.Models;
-using DHT.Desktop.Resources;
-using DHT.Server.Database;
-using DHT.Server.Logging;
-using DHT.Server.Service;
+using DHT.Desktop.Dialogs.Message;
+using DHT.Desktop.Discord;
+using DHT.Desktop.Server;
+using DHT.Utils.Models;
+using static DHT.Desktop.Program;
 
-namespace DHT.Desktop.Main.Pages {
-	public class TrackingPageModel : BaseModel, IDisposable {
-		internal static string ServerPort { get; set; } = ServerUtils.FindAvailablePort(50000, 60000).ToString();
-		internal static string ServerToken { get; set; } = ServerUtils.GenerateRandomToken(20);
+namespace DHT.Desktop.Main.Pages;
 
-		private string inputPort = ServerPort;
+sealed class TrackingPageModel : BaseModel {
+	private bool areDevToolsEnabled;
 
-		public string InputPort {
-			get => inputPort;
-			set {
-				Change(ref inputPort, value);
-				OnPropertyChanged(nameof(HasMadeChanges));
-			}
+	private bool AreDevToolsEnabled {
+		get => areDevToolsEnabled;
+		set {
+			Change(ref areDevToolsEnabled, value);
+			OnPropertyChanged(nameof(ToggleAppDevToolsButtonText));
 		}
+	}
 
-		private string inputToken = ServerToken;
+	public bool IsToggleAppDevToolsButtonEnabled { get; private set; } = true;
 
-		public string InputToken {
-			get => inputToken;
-			set {
-				Change(ref inputToken, value);
-				OnPropertyChanged(nameof(HasMadeChanges));
-			}
-		}
-
-		public bool HasMadeChanges => ServerPort != InputPort || ServerToken != InputToken;
-
-		private bool isToggleButtonEnabled = true;
-
-		public bool IsToggleButtonEnabled {
-			get => isToggleButtonEnabled;
-			set => Change(ref isToggleButtonEnabled, value);
-		}
-
-		public string ToggleButtonText => ServerLauncher.IsRunning ? "Pause Tracking" : "Resume Tracking";
-
-		public event EventHandler<StatusBarModel.Status>? ServerStatusChanged;
-
-		private readonly Window window;
-		private readonly IDatabaseFile db;
-
-		[Obsolete("Designer")]
-		public TrackingPageModel() : this(null!, DummyDatabaseFile.Instance) {}
-
-		public TrackingPageModel(Window window, IDatabaseFile db) {
-			this.window = window;
-			this.db = db;
-		}
-
-		public void Initialize() {
-			ServerLauncher.ServerStatusChanged += ServerLauncherOnServerStatusChanged;
-			ServerLauncher.ServerManagementExceptionCaught += ServerLauncherOnServerManagementExceptionCaught;
-
-			if (int.TryParse(ServerPort, out int port)) {
-				string token = ServerToken;
-				ServerLauncher.Relaunch(port, token, db);
-			}
-		}
-
-		public void Dispose() {
-			ServerLauncher.ServerManagementExceptionCaught -= ServerLauncherOnServerManagementExceptionCaught;
-			ServerLauncher.ServerStatusChanged -= ServerLauncherOnServerStatusChanged;
-			ServerLauncher.Stop();
-			GC.SuppressFinalize(this);
-		}
-
-		private async Task<bool> StartServer() {
-			if (!int.TryParse(InputPort, out int port) || port is < 0 or > 65535) {
-				await Dialog.ShowOk(window, "Invalid Port", "Port must be a number between 0 and 65535.");
-				return false;
+	public string ToggleAppDevToolsButtonText {
+		get {
+			if (!IsToggleAppDevToolsButtonEnabled) {
+				return "Unavailable";
 			}
 
-			IsToggleButtonEnabled = false;
-			ServerStatusChanged?.Invoke(this, StatusBarModel.Status.Starting);
-			ServerLauncher.Relaunch(port, InputToken, db);
+			return AreDevToolsEnabled ? "Disable Ctrl+Shift+I" : "Enable Ctrl+Shift+I";
+		}
+	}
+
+	private readonly Window window;
+
+	[Obsolete("Designer")]
+	public TrackingPageModel() : this(null!) {}
+
+	public TrackingPageModel(Window window) {
+		this.window = window;
+	}
+
+	public async Task Initialize() {
+		bool? devToolsEnabled = await DiscordAppSettings.AreDevToolsEnabled();
+		if (devToolsEnabled.HasValue) {
+			AreDevToolsEnabled = devToolsEnabled.Value;
+		}
+		else {
+			IsToggleAppDevToolsButtonEnabled = false;
+			OnPropertyChanged(nameof(IsToggleAppDevToolsButtonEnabled));
+		}
+	}
+
+	public async Task<bool> OnClickCopyTrackingScript() {
+		string bootstrap = await Resources.ReadTextAsync("Tracker/bootstrap.js");
+		string script = bootstrap.Replace("= 0; /*[PORT]*/", "= " + ServerManager.Port + ";")
+		                         .Replace("/*[TOKEN]*/", HttpUtility.JavaScriptStringEncode(ServerManager.Token))
+		                         .Replace("/*[IMPORTS]*/", await Resources.ReadJoinedAsync("Tracker/scripts/", '\n'))
+		                         .Replace("/*[CSS-CONTROLLER]*/", await Resources.ReadTextAsync("Tracker/styles/controller.css"))
+		                         .Replace("/*[CSS-SETTINGS]*/", await Resources.ReadTextAsync("Tracker/styles/settings.css"));
+
+		var clipboard = window.Clipboard;
+		if (clipboard == null) {
+			await Dialog.ShowOk(window, "Copy Tracking Script", "Clipboard is not available on this system.");
+			return false;
+		}
+
+		try {
+			await clipboard.SetTextAsync(script);
 			return true;
+		} catch {
+			await Dialog.ShowOk(window, "Copy Tracking Script", "An error occurred while copying to clipboard.");
+			return false;
 		}
+	}
 
-		private void StopServer() {
-			IsToggleButtonEnabled = false;
-			ServerStatusChanged?.Invoke(this, StatusBarModel.Status.Stopping);
-			ServerLauncher.Stop();
-		}
+	public async void OnClickToggleAppDevTools() {
+		const string DialogTitle = "Discord App Settings File";
 
-		public async Task<bool> OnClickToggleButton() {
-			if (ServerLauncher.IsRunning) {
-				StopServer();
-				return true;
-			}
-			else {
-				return await StartServer();
-			}
-		}
+		bool oldState = AreDevToolsEnabled;
+		bool newState = !oldState;
 
-		public async Task OnClickCopyTrackingScript() {
-			string bootstrap = await ResourceLoader.ReadTextAsync("Tracker/bootstrap.js");
-			string script = bootstrap.Replace("= 0; /*[PORT]*/", "= " + ServerPort + ";")
-			                         .Replace("/*[TOKEN]*/", HttpUtility.JavaScriptStringEncode(ServerToken))
-			                         .Replace("/*[IMPORTS]*/", await ResourceLoader.ReadJoinedAsync("Tracker/scripts/", '\n'))
-			                         .Replace("/*[CSS-CONTROLLER]*/", await ResourceLoader.ReadTextAsync("Tracker/styles/controller.css"))
-			                         .Replace("/*[CSS-SETTINGS]*/", await ResourceLoader.ReadTextAsync("Tracker/styles/settings.css"));
+		switch (await DiscordAppSettings.ConfigureDevTools(newState)) {
+			case SettingsJsonResult.Success:
+				AreDevToolsEnabled = newState;
+				await Dialog.ShowOk(window, DialogTitle, "Ctrl+Shift+I was " + (newState ? "enabled." : "disabled.") + " Restart the Discord app for the change to take effect.");
+				break;
 
-			await Application.Current.Clipboard.SetTextAsync(script);
-		}
+			case SettingsJsonResult.AlreadySet:
+				await Dialog.ShowOk(window, DialogTitle, "Ctrl+Shift+I is already " + (newState ? "enabled." : "disabled."));
+				AreDevToolsEnabled = newState;
+				break;
 
-		public void OnClickRandomizeToken() {
-			InputToken = ServerUtils.GenerateRandomToken(20);
-		}
+			case SettingsJsonResult.FileNotFound:
+				await Dialog.ShowOk(window, DialogTitle, "Cannot find the settings file:\n" + DiscordAppSettings.JsonFilePath);
+				break;
 
-		public async void OnClickApplyChanges() {
-			if (await StartServer()) {
-				ServerPort = InputPort;
-				ServerToken = InputToken;
-				OnPropertyChanged(nameof(HasMadeChanges));
-			}
-		}
+			case SettingsJsonResult.ReadError:
+				await Dialog.ShowOk(window, DialogTitle, "Cannot read the settings file:\n" + DiscordAppSettings.JsonFilePath);
+				break;
 
-		public void OnClickCancelChanges() {
-			InputPort = ServerPort;
-			InputToken = ServerToken;
-		}
+			case SettingsJsonResult.InvalidJson:
+				await Dialog.ShowOk(window, DialogTitle, "Unknown format of the settings file:\n" + DiscordAppSettings.JsonFilePath);
+				break;
 
-		private void ServerLauncherOnServerStatusChanged(object? sender, EventArgs e) {
-			ServerStatusChanged?.Invoke(this, ServerLauncher.IsRunning ? StatusBarModel.Status.Ready : StatusBarModel.Status.Stopped);
-			OnPropertyChanged(nameof(ToggleButtonText));
-			IsToggleButtonEnabled = true;
-		}
+			case SettingsJsonResult.WriteError:
+				await Dialog.ShowOk(window, DialogTitle, "Cannot save the settings file:\n" + DiscordAppSettings.JsonFilePath);
+				break;
 
-		private async void ServerLauncherOnServerManagementExceptionCaught(object? sender, Exception ex) {
-			Log.Error(ex);
-			await Dialog.ShowOk(window, "Server Error", ex.Message);
+			default:
+				throw new ArgumentOutOfRangeException();
 		}
 	}
 }

app/Desktop/Main/Pages/ViewerPage.axaml

@@ -13,17 +13,16 @@
 
     <UserControl.Styles>
         <Style Selector="Expander">
-            <Setter Property="Margin" Value="0 25 0 0" />
+            <Setter Property="Margin" Value="0 5 0 0" />
         </Style>
     </UserControl.Styles>
 
-    <StackPanel Orientation="Vertical">
+    <StackPanel Orientation="Vertical" Spacing="20">
         <StackPanel Orientation="Horizontal" VerticalAlignment="Top">
             <Button Command="{Binding OnClickOpenViewer}" Margin="0 0 5 0">Open Viewer</Button>
             <Button Command="{Binding OnClickSaveViewer}" Margin="5 0 0 0">Save Viewer</Button>
         </StackPanel>
-        <TextBlock Text="{Binding ExportedMessageText}" Margin="0 20 0 0" />
-        <controls:FilterPanel DataContext="{Binding FilterModel}" />
+        <controls:MessageFilterPanel DataContext="{Binding FilterModel}" />
         <Expander Header="Database Tools">
             <StackPanel Orientation="Vertical" Spacing="10">
                 <StackPanel Orientation="Vertical" Spacing="4">

app/Desktop/Main/Pages/ViewerPage.axaml.cs

@@ -1,14 +1,11 @@
+using System.Diagnostics.CodeAnalysis;
 using Avalonia.Controls;
-using Avalonia.Markup.Xaml;
 
-namespace DHT.Desktop.Main.Pages {
-	public class ViewerPage : UserControl {
-		public ViewerPage() {
-			InitializeComponent();
-		}
+namespace DHT.Desktop.Main.Pages;
 
-		private void InitializeComponent() {
-			AvaloniaXamlLoader.Load(this);
-		}
+[SuppressMessage("ReSharper", "MemberCanBeInternal")]
+public sealed partial class ViewerPage : UserControl {
+	public ViewerPage() {
+		InitializeComponent();
 	}
 }

app/Desktop/Main/Pages/ViewerPageModel.cs

@@ -1,126 +1,148 @@
 using System;
-using System.Collections.Generic;
+using System.Collections.Concurrent;
 using System.ComponentModel;
 using System.Diagnostics;
 using System.IO;
+using System.Text;
 using System.Threading.Tasks;
 using System.Web;
 using Avalonia.Controls;
+using Avalonia.Platform.Storage;
 using DHT.Desktop.Common;
-using DHT.Desktop.Dialogs;
+using DHT.Desktop.Dialogs.File;
+using DHT.Desktop.Dialogs.Message;
 using DHT.Desktop.Main.Controls;
-using DHT.Desktop.Models;
-using DHT.Desktop.Resources;
+using DHT.Desktop.Server;
 using DHT.Server.Data.Filters;
 using DHT.Server.Database;
 using DHT.Server.Database.Export;
+using DHT.Server.Database.Export.Strategy;
+using DHT.Utils.Models;
+using static DHT.Desktop.Program;
 
-namespace DHT.Desktop.Main.Pages {
-	public class ViewerPageModel : BaseModel {
-		public string ExportedMessageText { get; private set; } = "";
+namespace DHT.Desktop.Main.Pages;
 
-		public bool DatabaseToolFilterModeKeep { get; set; } = true;
-		public bool DatabaseToolFilterModeRemove { get; set; } = false;
+sealed class ViewerPageModel : BaseModel, IDisposable {
+	public static readonly ConcurrentBag<string> TemporaryFiles = new ();
 
-		private bool hasFilters = false;
+	public bool DatabaseToolFilterModeKeep { get; set; } = true;
+	public bool DatabaseToolFilterModeRemove { get; set; } = false;
 
-		public bool HasFilters {
-			get => hasFilters;
-			set => Change(ref hasFilters, value);
-		}
+	private bool hasFilters = false;
 
-		private FilterPanelModel FilterModel { get; }
+	public bool HasFilters {
+		get => hasFilters;
+		set => Change(ref hasFilters, value);
+	}
 
-		private readonly Window window;
-		private readonly IDatabaseFile db;
+	private MessageFilterPanelModel FilterModel { get; }
 
-		[Obsolete("Designer")]
-		public ViewerPageModel() : this(null!, DummyDatabaseFile.Instance) {}
+	private readonly Window window;
+	private readonly IDatabaseFile db;
 
-		public ViewerPageModel(Window window, IDatabaseFile db) {
-			this.window = window;
-			this.db = db;
+	[Obsolete("Designer")]
+	public ViewerPageModel() : this(null!, DummyDatabaseFile.Instance) {}
 
-			this.FilterModel = new FilterPanelModel(window, db);
-			this.FilterModel.FilterPropertyChanged += OnFilterPropertyChanged;
-			this.db.Statistics.PropertyChanged += OnDbStatisticsChanged;
-			UpdateStatistics();
-		}
+	public ViewerPageModel(Window window, IDatabaseFile db) {
+		this.window = window;
+		this.db = db;
 
-		private void OnFilterPropertyChanged(object? sender, PropertyChangedEventArgs e) {
-			UpdateStatistics();
-			HasFilters = FilterModel.HasAnyFilters;
-		}
+		FilterModel = new MessageFilterPanelModel(window, db, "Will export");
+		FilterModel.FilterPropertyChanged += OnFilterPropertyChanged;
+	}
 
-		private void OnDbStatisticsChanged(object? sender, PropertyChangedEventArgs e) {
-			if (e.PropertyName == nameof(DatabaseStatistics.TotalMessages)) {
-				UpdateStatistics();
-			}
-		}
+	public void Dispose() {
+		FilterModel.Dispose();
+	}
 
-		private void UpdateStatistics() {
-			ExportedMessageText = "Will export " + db.CountMessages(FilterModel.CreateFilter()).Format() + " out of " + db.Statistics.TotalMessages.Format() + " message(s).";
-			OnPropertyChanged(nameof(ExportedMessageText));
-		}
+	private void OnFilterPropertyChanged(object? sender, PropertyChangedEventArgs e) {
+		HasFilters = FilterModel.HasAnyFilters;
+	}
 
-		private async Task<string> GenerateViewerContents() {
-			string json = ViewerJsonExport.Generate(db, FilterModel.CreateFilter());
+	private async Task WriteViewerFile(string path, IViewerExportStrategy strategy) {
+		const string ArchiveTag = "/*[ARCHIVE]*/";
 
-			string index = await ResourceLoader.ReadTextAsync("Viewer/index.html");
-			string viewer = index.Replace("/*[JS]*/", await ResourceLoader.ReadJoinedAsync("Viewer/scripts/", '\n'))
-			                     .Replace("/*[CSS]*/", await ResourceLoader.ReadJoinedAsync("Viewer/styles/", '\n'))
-			                     .Replace("/*[ARCHIVE]*/", HttpUtility.JavaScriptStringEncode(json));
-			return viewer;
-		}
+		string indexFile = await Resources.ReadTextAsync("Viewer/index.html");
+		string viewerTemplate = indexFile.Replace("/*[JS]*/", await Resources.ReadJoinedAsync("Viewer/scripts/", '\n'))
+		                                 .Replace("/*[CSS]*/", await Resources.ReadJoinedAsync("Viewer/styles/", '\n'));
 
-		public async void OnClickOpenViewer() {
-			string rootPath = Path.Combine(Path.GetTempPath(), "DiscordHistoryTracker");
-			string filenameBase = Path.GetFileNameWithoutExtension(db.Path) + "-" + DateTime.Now.ToString("yyyy-MM-dd");
-			string fullPath = Path.Combine(rootPath, filenameBase + ".html");
-			int counter = 0;
+		int viewerArchiveTagStart = viewerTemplate.IndexOf(ArchiveTag);
+		int viewerArchiveTagEnd = viewerArchiveTagStart + ArchiveTag.Length;
 
-			while (File.Exists(fullPath)) {
-				++counter;
-				fullPath = Path.Combine(rootPath, filenameBase + "-" + counter + ".html");
-			}
+		string jsonTempFile = path + ".tmp";
 
-			Directory.CreateDirectory(rootPath);
-			await File.WriteAllTextAsync(fullPath, await GenerateViewerContents());
+		await using (var jsonStream = new FileStream(jsonTempFile, FileMode.Create, FileAccess.ReadWrite, FileShare.Read)) {
+			await ViewerJsonExport.Generate(jsonStream, strategy, db, FilterModel.CreateFilter());
 
-			Process.Start(new ProcessStartInfo(fullPath) { UseShellExecute = true });
-		}
+			char[] jsonBuffer = new char[Math.Min(32768, jsonStream.Position)];
+			jsonStream.Position = 0;
 
-		public async void OnClickSaveViewer() {
-			var dialog = new SaveFileDialog {
-				Title = "Save Viewer",
-				InitialFileName = "archive.html",
-				Directory = Path.GetDirectoryName(db.Path),
-				Filters = new List<FileDialogFilter> {
-					new() {
-						Name = "Discord History Viewer",
-						Extensions = { "html" }
+			await using (var outputStream = new FileStream(path, FileMode.Create, FileAccess.Write, FileShare.Read))
+			await using (var outputWriter = new StreamWriter(outputStream, Encoding.UTF8)) {
+				await outputWriter.WriteAsync(viewerTemplate[..viewerArchiveTagStart]);
+
+				using (var jsonReader = new StreamReader(jsonStream, Encoding.UTF8)) {
+					int readBytes;
+					while ((readBytes = await jsonReader.ReadAsync(jsonBuffer, 0, jsonBuffer.Length)) > 0) {
+						string jsonChunk = new string(jsonBuffer, 0, readBytes);
+						await outputWriter.WriteAsync(HttpUtility.JavaScriptStringEncode(jsonChunk));
 					}
 				}
-			}.ShowAsync(window);
 
-			string? path = await dialog;
-			if (!string.IsNullOrEmpty(path)) {
-				await File.WriteAllTextAsync(path, await GenerateViewerContents());
+				await outputWriter.WriteAsync(viewerTemplate[viewerArchiveTagEnd..]);
 			}
 		}
 
-		public async void OnClickApplyFiltersToDatabase() {
-			var filter = FilterModel.CreateFilter();
+		File.Delete(jsonTempFile);
+	}
 
-			if (DatabaseToolFilterModeKeep) {
-				if (DialogResult.YesNo.Yes == await Dialog.ShowYesNo(window, "Keep Matching Messages in This Database", db.CountMessages(filter).Pluralize("message") + " will be kept, and the rest will be removed from this database. This action cannot be undone. Proceed?")) {
-					db.RemoveMessages(filter, MessageFilterRemovalMode.KeepMatching);
-				}
+	public async void OnClickOpenViewer() {
+		string rootPath = Path.Combine(Path.GetTempPath(), "DiscordHistoryTracker");
+		string filenameBase = Path.GetFileNameWithoutExtension(db.Path) + "-" + DateTime.Now.ToString("yyyy-MM-dd");
+		string fullPath = Path.Combine(rootPath, filenameBase + ".html");
+		int counter = 0;
+
+		while (File.Exists(fullPath)) {
+			++counter;
+			fullPath = Path.Combine(rootPath, filenameBase + "-" + counter + ".html");
+		}
+
+		TemporaryFiles.Add(fullPath);
+
+		Directory.CreateDirectory(rootPath);
+		await WriteViewerFile(fullPath, new LiveViewerExportStrategy(ServerManager.Port, ServerManager.Token));
+
+		Process.Start(new ProcessStartInfo(fullPath) { UseShellExecute = true });
+	}
+
+	private static readonly FilePickerFileType[] ViewerFileTypes = {
+		FileDialogs.CreateFilter("Discord History Viewer", new string[] { "html" }),
+	};
+	
+	public async void OnClickSaveViewer() {
+		string? path = await window.StorageProvider.SaveFile(new FilePickerSaveOptions {
+			Title = "Save Viewer",
+			FileTypeChoices = ViewerFileTypes,
+			SuggestedFileName = Path.GetFileNameWithoutExtension(db.Path) + ".html",
+			SuggestedStartLocation = await FileDialogs.GetSuggestedStartLocation(window, Path.GetDirectoryName(db.Path)),
+		});
+
+		if (path != null) {
+			await WriteViewerFile(path, StandaloneViewerExportStrategy.Instance);
+		}
+	}
+
+	public async void OnClickApplyFiltersToDatabase() {
+		var filter = FilterModel.CreateFilter();
+
+		if (DatabaseToolFilterModeKeep) {
+			if (DialogResult.YesNo.Yes == await Dialog.ShowYesNo(window, "Keep Matching Messages in This Database", db.CountMessages(filter).Pluralize("message") + " will be kept, and the rest will be removed from this database. This action cannot be undone. Proceed?")) {
+				db.RemoveMessages(filter, FilterRemovalMode.KeepMatching);
 			}
-			else if (DatabaseToolFilterModeRemove) {
-				if (DialogResult.YesNo.Yes == await Dialog.ShowYesNo(window, "Remove Matching Messages in This Database", db.CountMessages(filter).Pluralize("message") + " will be removed from this database. This action cannot be undone. Proceed?")) {
-					db.RemoveMessages(filter, MessageFilterRemovalMode.RemoveMatching);
-				}
+		}
+		else if (DatabaseToolFilterModeRemove) {
+			if (DialogResult.YesNo.Yes == await Dialog.ShowYesNo(window, "Remove Matching Messages in This Database", db.CountMessages(filter).Pluralize("message") + " will be removed from this database. This action cannot be undone. Proceed?")) {
+				db.RemoveMessages(filter, FilterRemovalMode.RemoveMatching);
 			}
 		}
 	}

app/Desktop/Main/Screens/MainContentScreen.axaml

@@ -0,0 +1,119 @@
+<UserControl xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+             xmlns:controls="clr-namespace:DHT.Desktop.Main.Controls"
+             xmlns:screens="clr-namespace:DHT.Desktop.Main.Screens"
+             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
+             x:Class="DHT.Desktop.Main.Screens.MainContentScreen">
+
+    <Design.DataContext>
+        <screens:MainContentScreenModel />
+    </Design.DataContext>
+
+    <UserControl.Styles>
+        <Style Selector="Border.statusBar">
+            <Setter Property="Background" Value="#3C4F79" />
+        </Style>
+        <Style Selector="TextBlock.invisibleTabItem">
+            <Setter Property="FontSize" Value="20" />
+            <Setter Property="FontWeight" Value="SemiLight" />
+            <Setter Property="Margin" Value="17 0" />
+            <Setter Property="Opacity" Value="0" />
+        </Style>
+        <Style Selector="TabControl ItemsPresenter > Grid">
+            <Setter Property="Background" Value="#546A9F" />
+        </Style>
+        <Style Selector="TabItem">
+            <Setter Property="Cursor" Value="Hand" />
+            <Setter Property="Foreground" Value="#E9E9E9" />
+            <Setter Property="FontSize" Value="20" />
+        </Style>
+        <Style Selector="TabItem[TabStripPlacement=Left] /template/ ContentPresenter#PART_ContentPresenter">
+            <Setter Property="Margin" Value="5 0" />
+        </Style>
+        <Style Selector="TabItem:pointerover">
+            <Setter Property="Cursor" Value="Hand" />
+            <Setter Property="Background" Value="#455785" />
+        </Style>
+        <Style Selector="TabItem:pointerover /template/ Border">
+            <Setter Property="Background" Value="#455785" />
+        </Style>
+        <Style Selector="TabItem:pointerover > TextBlock">
+            <Setter Property="Foreground" Value="#E9E9E9" />
+        </Style>
+        <Style Selector="TabItem:selected:pointerover /template/ Border">
+            <Setter Property="Background" Value="#FFFFFF" />
+        </Style>
+        <Style Selector="TabItem:selected:pointerover > TextBlock">
+            <Setter Property="Foreground" Value="#1A2234" />
+        </Style>
+        <Style Selector="TabItem:selected">
+            <Setter Property="Foreground" Value="#1A2234" />
+            <Setter Property="Background" Value="#FFFFFF" />
+        </Style>
+        <Style Selector="TabItem:selected /template/ Border#PART_SelectedPipe">
+            <Setter Property="IsVisible" Value="False" />
+        </Style>
+        <Style Selector="TabItem:disabled > TextBlock">
+            <Setter Property="Foreground" Value="#B2B2B2" />
+            <Setter Property="TextDecorations" Value="Strikethrough" />
+        </Style>
+        <Style Selector="TabItem.first">
+            <Setter Property="Margin" Value="0 13 0 0" />
+        </Style>
+        <Style Selector="TabControl">
+            <Setter Property="Padding" Value="0" />
+        </Style>
+        <Style Selector="ContentPresenter.page">
+            <Setter Property="Margin" Value="15 21 20 21" />
+        </Style>
+    </UserControl.Styles>
+
+    <DockPanel>
+        <Border Classes="statusBar" DockPanel.Dock="Bottom">
+            <DockPanel>
+                <TextBlock Classes="invisibleTabItem" DockPanel.Dock="Left">Attachments</TextBlock>
+                <controls:StatusBar DataContext="{Binding StatusBarModel}" DockPanel.Dock="Right" />
+            </DockPanel>
+        </Border>
+        <TabControl x:Name="TabControl" TabStripPlacement="Left" DockPanel.Dock="Top">
+            <TabControl.ItemsPanel>
+                <ItemsPanelTemplate>
+                    <Grid ColumnDefinitions="Auto" RowDefinitions="Auto,Auto,Auto,Auto,*,Auto,Auto" />
+                </ItemsPanelTemplate>
+            </TabControl.ItemsPanel>
+            <TabItem x:Name="TabDatabase" Header="Database" Classes="first" Grid.Row="0">
+                <ScrollViewer>
+                    <ContentPresenter Content="{Binding DatabasePage}" Classes="page" />
+                </ScrollViewer>
+            </TabItem>
+            <TabItem x:Name="TabTracking" Header="Tracking" Grid.Row="1">
+                <ScrollViewer>
+                    <ContentPresenter Content="{Binding TrackingPage}" Classes="page" />
+                </ScrollViewer>
+            </TabItem>
+            <TabItem x:Name="TabAttachments" Header="Attachments" Grid.Row="2">
+                <ScrollViewer>
+                    <ContentPresenter Content="{Binding AttachmentsPage}" Classes="page" />
+                </ScrollViewer>
+            </TabItem>
+            <TabItem x:Name="TabViewer" Header="Viewer" Grid.Row="3">
+                <ScrollViewer>
+                    <ContentPresenter Content="{Binding ViewerPage}" Classes="page" />
+                </ScrollViewer>
+            </TabItem>
+            <TabItem x:Name="TabAdvanced" Header="Advanced" Grid.Row="5">
+                <ScrollViewer>
+                    <ContentPresenter Content="{Binding AdvancedPage}" Classes="page" />
+                </ScrollViewer>
+            </TabItem>
+            <TabItem x:Name="TabDebug" Header="Debug" Grid.Row="6" IsVisible="{Binding HasDebugPage}">
+                <ScrollViewer>
+                    <ContentPresenter Content="{Binding DebugPage}" Classes="page" />
+                </ScrollViewer>
+            </TabItem>
+        </TabControl>
+    </DockPanel>
+
+</UserControl>

app/Desktop/Main/Screens/MainContentScreen.axaml.cs

@@ -0,0 +1,11 @@
+using System.Diagnostics.CodeAnalysis;
+using Avalonia.Controls;
+
+namespace DHT.Desktop.Main.Screens;
+
+[SuppressMessage("ReSharper", "MemberCanBeInternal")]
+public sealed partial class MainContentScreen : UserControl {
+	public MainContentScreen() {
+		InitializeComponent();
+	}
+}

app/Desktop/Main/Screens/MainContentScreenModel.cs

@@ -0,0 +1,119 @@
+using System;
+using System.Threading.Tasks;
+using Avalonia.Controls;
+using DHT.Desktop.Dialogs.Message;
+using DHT.Desktop.Main.Controls;
+using DHT.Desktop.Main.Pages;
+using DHT.Desktop.Server;
+using DHT.Server.Database;
+using DHT.Server.Service;
+using DHT.Utils.Logging;
+
+namespace DHT.Desktop.Main.Screens;
+
+sealed class MainContentScreenModel : IDisposable {
+	private static readonly Log Log = Log.ForType<MainContentScreenModel>();
+
+	public DatabasePage DatabasePage { get; }
+	private DatabasePageModel DatabasePageModel { get; }
+
+	public TrackingPage TrackingPage { get; }
+	private TrackingPageModel TrackingPageModel { get; }
+
+	public AttachmentsPage AttachmentsPage { get; }
+	private AttachmentsPageModel AttachmentsPageModel { get; }
+
+	public ViewerPage ViewerPage { get; }
+	private ViewerPageModel ViewerPageModel { get; }
+
+	public AdvancedPage AdvancedPage { get; }
+	private AdvancedPageModel AdvancedPageModel { get; }
+
+	public DebugPage? DebugPage { get; }
+
+	#if DEBUG
+	public bool HasDebugPage => true;
+	private DebugPageModel DebugPageModel { get; }
+	#else
+		public bool HasDebugPage => false;
+	#endif
+
+	public StatusBarModel StatusBarModel { get; }
+
+	public event EventHandler? DatabaseClosed {
+		add {
+			DatabasePageModel.DatabaseClosed += value;
+		}
+		remove {
+			DatabasePageModel.DatabaseClosed -= value;
+		}
+	}
+
+	private readonly Window window;
+	private readonly ServerManager serverManager;
+
+	[Obsolete("Designer")]
+	public MainContentScreenModel() : this(null!, DummyDatabaseFile.Instance) {}
+
+	public MainContentScreenModel(Window window, IDatabaseFile db) {
+		this.window = window;
+		this.serverManager = new ServerManager(db);
+
+		ServerLauncher.ServerManagementExceptionCaught += ServerLauncherOnServerManagementExceptionCaught;
+
+		DatabasePageModel = new DatabasePageModel(window, db);
+		DatabasePage = new DatabasePage { DataContext = DatabasePageModel };
+
+		TrackingPageModel = new TrackingPageModel(window);
+		TrackingPage = new TrackingPage { DataContext = TrackingPageModel };
+
+		AttachmentsPageModel = new AttachmentsPageModel(db);
+		AttachmentsPage = new AttachmentsPage { DataContext = AttachmentsPageModel };
+
+		ViewerPageModel = new ViewerPageModel(window, db);
+		ViewerPage = new ViewerPage { DataContext = ViewerPageModel };
+
+		AdvancedPageModel = new AdvancedPageModel(window, db, serverManager);
+		AdvancedPage = new AdvancedPage { DataContext = AdvancedPageModel };
+
+		#if DEBUG
+		DebugPageModel = new DebugPageModel(window, db);
+		DebugPage = new DebugPage { DataContext = DebugPageModel };
+		#else
+			DebugPage = null;
+		#endif
+
+		StatusBarModel = new StatusBarModel(db.Statistics);
+
+		AdvancedPageModel.ServerConfigurationModel.ServerStatusChanged += OnServerStatusChanged;
+		DatabaseClosed += OnDatabaseClosed;
+
+		StatusBarModel.CurrentStatus = serverManager.IsRunning ? StatusBarModel.Status.Ready : StatusBarModel.Status.Stopped;
+	}
+
+	public async Task Initialize() {
+		await TrackingPageModel.Initialize();
+		AdvancedPageModel.Initialize();
+		serverManager.Launch();
+	}
+
+	public void Dispose() {
+		ServerLauncher.ServerManagementExceptionCaught -= ServerLauncherOnServerManagementExceptionCaught;
+		AttachmentsPageModel.Dispose();
+		ViewerPageModel.Dispose();
+		serverManager.Dispose();
+	}
+
+	private void OnServerStatusChanged(object? sender, StatusBarModel.Status e) {
+		StatusBarModel.CurrentStatus = e;
+	}
+
+	private void OnDatabaseClosed(object? sender, EventArgs e) {
+		serverManager.Stop();
+	}
+
+	private async void ServerLauncherOnServerManagementExceptionCaught(object? sender, Exception ex) {
+		Log.Error(ex);
+		await Dialog.ShowOk(window, "Internal Server Error", ex.Message);
+	}
+}

app/Desktop/Main/Screens/WelcomeScreen.axaml

@@ -2,12 +2,12 @@
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
              xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
              xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
-             xmlns:main="clr-namespace:DHT.Desktop.Main"
+             xmlns:screens="clr-namespace:DHT.Desktop.Main.Screens"
              mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
-             x:Class="DHT.Desktop.Main.WelcomeScreen">
+             x:Class="DHT.Desktop.Main.Screens.WelcomeScreen">
 
     <Design.DataContext>
-        <main:WelcomeScreenModel />
+        <screens:WelcomeScreenModel />
     </Design.DataContext>
 
     <UserControl.Background>

app/Desktop/Main/Screens/WelcomeScreen.axaml.cs

@@ -0,0 +1,11 @@
+using System.Diagnostics.CodeAnalysis;
+using Avalonia.Controls;
+
+namespace DHT.Desktop.Main.Screens;
+
+[SuppressMessage("ReSharper", "MemberCanBeInternal")]
+public sealed partial class WelcomeScreen : UserControl {
+	public WelcomeScreen() {
+		InitializeComponent();
+	}
+}

app/Desktop/Main/Screens/WelcomeScreenModel.cs

@@ -0,0 +1,70 @@
+using System;
+using System.IO;
+using System.Threading.Tasks;
+using Avalonia.Controls;
+using DHT.Desktop.Common;
+using DHT.Desktop.Dialogs.Message;
+using DHT.Server.Database;
+using DHT.Utils.Models;
+
+namespace DHT.Desktop.Main.Screens;
+
+sealed class WelcomeScreenModel : BaseModel, IDisposable {
+	public string Version => Program.Version;
+
+	public IDatabaseFile? Db { get; private set; }
+	public bool HasDatabase => Db != null;
+
+	private readonly Window window;
+
+	private string? dbFilePath;
+
+	[Obsolete("Designer")]
+	public WelcomeScreenModel() : this(null!) {}
+
+	public WelcomeScreenModel(Window window) {
+		this.window = window;
+	}
+
+	public async void OpenOrCreateDatabase() {
+		var path = await DatabaseGui.NewOpenOrCreateDatabaseFileDialog(window, Path.GetDirectoryName(dbFilePath));
+		if (path != null) {
+			await OpenOrCreateDatabaseFromPath(path);
+		}
+	}
+
+	public async Task OpenOrCreateDatabaseFromPath(string path) {
+		if (Db != null) {
+			Db = null;
+		}
+
+		dbFilePath = path;
+		Db = await DatabaseGui.TryOpenOrCreateDatabaseFromPath(path, window, CheckCanUpgradeDatabase);
+
+		OnPropertyChanged(nameof(Db));
+		OnPropertyChanged(nameof(HasDatabase));
+	}
+
+	private async Task<bool> CheckCanUpgradeDatabase() {
+		return DialogResult.YesNo.Yes == await DatabaseGui.ShowCanUpgradeDatabaseDialog(window);
+	}
+
+	public void CloseDatabase() {
+		Dispose();
+		OnPropertyChanged(nameof(Db));
+		OnPropertyChanged(nameof(HasDatabase));
+	}
+
+	public async void ShowAboutDialog() {
+		await new AboutWindow { DataContext = new AboutWindowModel() }.ShowDialog(this.window);
+	}
+
+	public void Exit() {
+		window.Close();
+	}
+
+	public void Dispose() {
+		Db?.Dispose();
+		Db = null;
+	}
+}

app/Desktop/Main/WelcomeScreen.axaml.cs

@@ -1,14 +0,0 @@
-using Avalonia.Controls;
-using Avalonia.Markup.Xaml;
-
-namespace DHT.Desktop.Main {
-	public class WelcomeScreen : UserControl {
-		public WelcomeScreen() {
-			InitializeComponent();
-		}
-
-		private void InitializeComponent() {
-			AvaloniaXamlLoader.Load(this);
-		}
-	}
-}

app/Desktop/Main/WelcomeScreenModel.cs

@@ -1,69 +0,0 @@
-using System;
-using System.IO;
-using System.Threading.Tasks;
-using Avalonia.Controls;
-using DHT.Desktop.Common;
-using DHT.Desktop.Dialogs;
-using DHT.Desktop.Models;
-using DHT.Server.Database;
-
-namespace DHT.Desktop.Main {
-	public class WelcomeScreenModel : BaseModel {
-		public string Version => Program.Version;
-
-		public IDatabaseFile? Db { get; private set; }
-		public bool HasDatabase => Db != null;
-
-		private readonly Window window;
-
-		private string? dbFilePath;
-
-		[Obsolete("Designer")]
-		public WelcomeScreenModel() : this(null!) {}
-
-		public WelcomeScreenModel(Window window) {
-			this.window = window;
-		}
-
-		public async void OpenOrCreateDatabase() {
-			var dialog = DatabaseGui.NewOpenOrCreateDatabaseFileDialog();
-			dialog.Directory = Path.GetDirectoryName(dbFilePath);
-
-			string? path = await dialog.ShowAsync(window);
-			if (!string.IsNullOrWhiteSpace(path)) {
-				await OpenOrCreateDatabaseFromPath(path);
-			}
-		}
-
-		public async Task OpenOrCreateDatabaseFromPath(string path) {
-			if (Db != null) {
-				Db = null;
-			}
-
-			dbFilePath = path;
-			Db = await DatabaseGui.TryOpenOrCreateDatabaseFromPath(path, window, CheckCanUpgradeDatabase);
-
-			OnPropertyChanged(nameof(Db));
-			OnPropertyChanged(nameof(HasDatabase));
-		}
-
-		private async Task<bool> CheckCanUpgradeDatabase() {
-			return DialogResult.YesNo.Yes == await DatabaseGui.ShowCanUpgradeDatabaseDialog(window);
-		}
-
-		public void CloseDatabase() {
-			Db = null;
-
-			OnPropertyChanged(nameof(Db));
-			OnPropertyChanged(nameof(HasDatabase));
-		}
-
-		public async void ShowAboutDialog() {
-			await new AboutWindow { DataContext = new AboutWindowModel() }.ShowDialog(this.window);
-		}
-
-		public void Exit() {
-			window.Close();
-		}
-	}
-}

app/Desktop/Models/BaseModel.cs

@@ -1,22 +0,0 @@
-using System.Collections.Generic;
-using System.ComponentModel;
-using System.Runtime.CompilerServices;
-using JetBrains.Annotations;
-
-namespace DHT.Desktop.Models {
-	public abstract class BaseModel : INotifyPropertyChanged {
-		public event PropertyChangedEventHandler? PropertyChanged;
-
-		[NotifyPropertyChangedInvocator]
-		protected void OnPropertyChanged([CallerMemberName] string? propertyName = null) {
-			PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
-		}
-
-		protected void Change<T>(ref T field, T newValue, [CallerMemberName] string? propertyName = null) {
-			if (!EqualityComparer<T>.Default.Equals(field, newValue)) {
-				field = newValue;
-				OnPropertyChanged(propertyName);
-			}
-		}
-	}
-}

app/Desktop/Program.cs

@@ -1,33 +1,40 @@
 using System.Globalization;
 using System.Reflection;
 using Avalonia;
+using DHT.Utils.Resources;
 
-namespace DHT.Desktop {
-	internal static class Program {
-		public static string Version { get; }
-		public static CultureInfo Culture { get; }
+namespace DHT.Desktop;
 
-		static Program() {
-			Version = Assembly.GetExecutingAssembly().GetName().Version?.ToString() ?? "";
-			while (Version.EndsWith(".0")) {
-				Version = Version[..^2];
-			}
+static class Program {
+	public static string Version { get; }
+	public static CultureInfo Culture { get; }
+	public static ResourceLoader Resources { get; }
 
-			Culture = CultureInfo.CurrentCulture;
-			CultureInfo.CurrentCulture = CultureInfo.InvariantCulture;
-			CultureInfo.CurrentUICulture = CultureInfo.InvariantCulture;
-			CultureInfo.DefaultThreadCurrentCulture = CultureInfo.InvariantCulture;
-			CultureInfo.DefaultThreadCurrentUICulture = CultureInfo.InvariantCulture;
+	static Program() {
+		var assembly = Assembly.GetExecutingAssembly();
+
+		Version = assembly.GetName().Version?.ToString() ?? "";
+		while (Version.EndsWith(".0")) {
+			Version = Version[..^2];
 		}
 
-		public static void Main(string[] args) {
-			BuildAvaloniaApp().StartWithClassicDesktopLifetime(args);
-		}
+		Culture = CultureInfo.CurrentCulture;
+		CultureInfo.CurrentCulture = CultureInfo.InvariantCulture;
+		CultureInfo.CurrentUICulture = CultureInfo.InvariantCulture;
+		CultureInfo.DefaultThreadCurrentCulture = CultureInfo.InvariantCulture;
+		CultureInfo.DefaultThreadCurrentUICulture = CultureInfo.InvariantCulture;
 
-		private static AppBuilder BuildAvaloniaApp() {
-			return AppBuilder.Configure<App>()
-			                 .UsePlatformDetect()
-			                 .LogToTrace();
-		}
+		Resources = new ResourceLoader(assembly);
+	}
+
+	public static void Main(string[] args) {
+		BuildAvaloniaApp().StartWithClassicDesktopLifetime(args);
+	}
+
+	private static AppBuilder BuildAvaloniaApp() {
+		return AppBuilder.Configure<App>()
+		                 .UsePlatformDetect()
+		                 .WithInterFont()
+		                 .LogToTrace();
 	}
 }

app/Desktop/Resources/ResourceLoader.cs

@@ -1,44 +0,0 @@
-using System;
-using System.IO;
-using System.Reflection;
-using System.Text;
-using System.Threading.Tasks;
-
-namespace DHT.Desktop.Resources {
-	public static class ResourceLoader {
-		private static Stream GetEmbeddedStream(string filename) {
-			Stream? stream = null;
-			Assembly assembly = Assembly.GetExecutingAssembly();
-			foreach (var embeddedName in assembly.GetManifestResourceNames()) {
-				if (embeddedName.Replace('\\', '/') == filename) {
-					stream = assembly.GetManifestResourceStream(embeddedName);
-					break;
-				}
-			}
-
-			return stream ?? throw new ArgumentException("Missing embedded resource: " + filename);
-		}
-
-		private static async Task<string> ReadTextAsync(Stream stream) {
-			using var reader = new StreamReader(stream, Encoding.UTF8);
-			return await reader.ReadToEndAsync();
-		}
-
-		public static async Task<string> ReadTextAsync(string filename) {
-			return await ReadTextAsync(GetEmbeddedStream(filename));
-		}
-
-		public static async Task<string> ReadJoinedAsync(string path, char separator) {
-			StringBuilder joined = new();
-
-			Assembly assembly = Assembly.GetExecutingAssembly();
-			foreach (var embeddedName in assembly.GetManifestResourceNames()) {
-				if (embeddedName.Replace('\\', '/').StartsWith(path)) {
-					joined.Append(await ReadTextAsync(assembly.GetManifestResourceStream(embeddedName)!)).Append(separator);
-				}
-			}
-
-			return joined.ToString(0, Math.Max(0, joined.Length - 1));
-		}
-	}
-}

app/Desktop/Server/ServerManager.cs

@@ -0,0 +1,50 @@
+using System;
+using DHT.Server.Database;
+using DHT.Server.Service;
+
+namespace DHT.Desktop.Server;
+
+sealed class ServerManager : IDisposable {
+	public static ushort Port { get; set; } = ServerUtils.FindAvailablePort(50000, 60000);
+	public static string Token { get; set; } = ServerUtils.GenerateRandomToken(20);
+
+	private static ServerManager? instance;
+
+	public bool IsRunning => ServerLauncher.IsRunning;
+
+	private readonly IDatabaseFile db;
+
+	public ServerManager(IDatabaseFile db) {
+		if (db != DummyDatabaseFile.Instance) {
+			if (instance != null) {
+				throw new InvalidOperationException("Only one instance of ServerManager can exist at the same time!");
+			}
+
+			instance = this;
+		}
+
+		this.db = db;
+	}
+
+	public void Launch() {
+		ServerLauncher.Relaunch(Port, Token, db);
+	}
+
+	public void Relaunch(ushort port, string token) {
+		Port = port;
+		Token = token;
+		Launch();
+	}
+
+	public void Stop() {
+		ServerLauncher.Stop();
+	}
+
+	public void Dispose() {
+		Stop();
+
+		if (instance == this) {
+			instance = null;
+		}
+	}
+}

app/Directory.build.props

@@ -0,0 +1,8 @@
+<Project>
+  
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <LangVersion>11</LangVersion>
+  </PropertyGroup>
+  
+</Project>

app/DiscordHistoryTracker.sln

@@ -4,6 +4,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Desktop", "Desktop\Desktop.
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Server", "Server\Server.csproj", "{7F94B470-B06F-43C0-9655-6592A9AE2D92}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Utils", "Utils\Utils.csproj", "{7EEC1C05-1D21-4B39-B1D6-CF51F3795629}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -18,5 +20,9 @@ Global
 		{7F94B470-B06F-43C0-9655-6592A9AE2D92}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{7F94B470-B06F-43C0-9655-6592A9AE2D92}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{7F94B470-B06F-43C0-9655-6592A9AE2D92}.Release|Any CPU.Build.0 = Release|Any CPU
+		{7EEC1C05-1D21-4B39-B1D6-CF51F3795629}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{7EEC1C05-1D21-4B39-B1D6-CF51F3795629}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{7EEC1C05-1D21-4B39-B1D6-CF51F3795629}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{7EEC1C05-1D21-4B39-B1D6-CF51F3795629}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 EndGlobal

app/Resources/Tracker/bootstrap.js

@@ -42,6 +42,10 @@
 		stopTrackingDelayed(() => isSending = false);
 	};
 	
+	const isNoAction = function(action) {
+		return action === null || action === CONSTANTS.AUTOSCROLL_ACTION_NOTHING;
+	};
+	
 	const onTrackingContinued = function(anyNewMessages) {
 		if (!STATE.isTracking()) {
 			return;
@@ -59,14 +63,14 @@
 		if (SETTINGS.autoscroll) {
 			let action = null;
 			
-			if (!anyNewMessages) {
-				action = SETTINGS.afterSavedMsg;
-			}
-			else if (!DISCORD.hasMoreMessages()) {
+			if (!DISCORD.hasMoreMessages()) {
 				action = SETTINGS.afterFirstMsg;
 			}
+			if (isNoAction(action) && !anyNewMessages) {
+				action = SETTINGS.afterSavedMsg;
+			}
 			
-			if (action === null || action === CONSTANTS.AUTOSCROLL_ACTION_NOTHING) {
+			if (isNoAction(action)) {
 				DISCORD.loadOlderMessages();
 			}
 			else if (action === CONSTANTS.AUTOSCROLL_ACTION_PAUSE || (action === CONSTANTS.AUTOSCROLL_ACTION_SWITCH && !DISCORD.selectNextTextChannel())) {
@@ -113,8 +117,8 @@
 		
 		try {
 			if (!messages.length) {
-				DISCORD.loadOlderMessages();
 				isSending = false;
+				onTrackingContinued(false);
 			}
 			else {
 				const anyNewMessages = await STATE.addDiscordMessages(info.id, messages);
@@ -125,8 +129,7 @@
 		}
 	};
 	
-	const callbackTimer = DISCORD.setupMessageCallback(onMessagesUpdated);
-	window.DHT_ON_UNLOAD.push(() => window.clearTimeout(callbackTimer));
+	DISCORD.setupMessageCallback(onMessagesUpdated);
 	
 	STATE.onTrackingStateChanged(enabled => {
 		if (enabled) {