Update version

Closes #19

.gitignore

@@ -259,3 +259,9 @@ paket-files/
 # Python Tools for Visual Studio (PTVS)
 __pycache__/
 *.pyc
+
+# Ammy auto-generated XAML
+*.g.xaml
+
+# Deploy output
+Deploy/Output/

Deploy/Prepare.ps1

@@ -0,0 +1,22 @@
+$path = "$PSScriptRoot\..\DiscordChatExporter\bin\Release\*"
+$include = "*.exe", "*.dll", "*.config"
+$outputDir = "$PSScriptRoot\Output"
+$outputFile = "DiscordChatExporter.zip"
+
+# Create output directory
+if (-Not (Test-Path $outputDir))
+{
+    New-Item $outputDir -ItemType Directory
+}
+
+# Delete output if already exists
+if (Test-Path("$outputDir\$outputFile"))
+{
+    Remove-Item -Path "$outputDir\$outputFile"
+}
+
+# Get files
+$files = Get-ChildItem -Path $path -Include $include
+
+# Pack into archive
+$files | Compress-Archive -DestinationPath "$outputDir\$outputFile"

DiscordChatExporter.sln

@@ -1,28 +1,31 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio 15
-VisualStudioVersion = 15.0.26430.13
+VisualStudioVersion = 15.0.26730.15
 MinimumVisualStudioVersion = 10.0.40219.1
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "DiscordChatExporter", "DiscordChatExporter\DiscordChatExporter.csproj", "{4BE915D1-129C-49E2-860E-62045ACA5EAD}"
-EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{EA305DD5-1F98-415D-B6C4-65053A58F914}"
 	ProjectSection(SolutionItems) = preProject
 		License.txt = License.txt
 		Readme.md = Readme.md
 	EndProjectSection
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DiscordChatExporter", "DiscordChatExporter\DiscordChatExporter.csproj", "{732A67AF-93DE-49DF-B10F-FD74710B7863}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
 		Release|Any CPU = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
-		{4BE915D1-129C-49E2-860E-62045ACA5EAD}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{732A67AF-93DE-49DF-B10F-FD74710B7863}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{4BE915D1-129C-49E2-860E-62045ACA5EAD}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{732A67AF-93DE-49DF-B10F-FD74710B7863}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{4BE915D1-129C-49E2-860E-62045ACA5EAD}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{732A67AF-93DE-49DF-B10F-FD74710B7863}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{4BE915D1-129C-49E2-860E-62045ACA5EAD}.Release|Any CPU.Build.0 = Release|Any CPU
+		{732A67AF-93DE-49DF-B10F-FD74710B7863}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
 	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {51587D08-01E1-4511-AC57-A417D1A9162F}
+	EndGlobalSection
 EndGlobal

DiscordChatExporter/App.ammy

@@ -0,0 +1,69 @@
+Application "DiscordChatExporter.App" {
+  StartupUri: "Views/MainWindow.g.xaml"
+  Startup: App_Startup
+  Exit: App_Exit
+
+  Resources: ResourceDictionary {
+    // Material Design
+    #MergeDictionary("pack://application:,,,/MaterialDesignThemes.Wpf;component/Themes/MaterialDesignTheme.Light.xaml")
+    #MergeDictionary("pack://application:,,,/MaterialDesignThemes.Wpf;component/Themes/MaterialDesignTheme.Defaults.xaml")
+
+    // Colors
+    Color Key="PrimaryColor" { "#343838" }
+    Color Key="PrimaryLightColor" { "#5E6262" }
+    Color Key="PrimaryDarkColor" { "#0D1212" }
+    Color Key="AccentColor" { "#F9A825" }
+    Color Key="TextColor" { "#000000" }
+    Color Key="InverseTextColor" { "#FFFFFF" }
+
+    // Brushes
+    SolidColorBrush Key="PrimaryHueLightBrush" { Color: resource dyn "PrimaryLightColor" }
+    SolidColorBrush Key="PrimaryHueLightForegroundBrush" { Color: resource dyn "InverseTextColor" }
+    SolidColorBrush Key="PrimaryHueMidBrush" { Color: resource dyn "PrimaryColor" }
+    SolidColorBrush Key="PrimaryHueMidForegroundBrush" { Color: resource dyn "InverseTextColor" }
+    SolidColorBrush Key="PrimaryHueDarkBrush" { Color: resource dyn "PrimaryDarkColor" }
+    SolidColorBrush Key="PrimaryHueDarkForegroundBrush" { Color: resource dyn "InverseTextColor" }
+    SolidColorBrush Key="SecondaryAccentBrush" { Color: resource dyn "AccentColor" }
+    SolidColorBrush Key="SecondaryAccentForegroundBrush" { Color: resource dyn "TextColor" }
+    SolidColorBrush Key="PrimaryTextBrush" { Color: resource dyn "TextColor", Opacity: 0.87 }
+    SolidColorBrush Key="SecondaryTextBrush" { Color: resource dyn "TextColor", Opacity: 0.64 }
+    SolidColorBrush Key="DimTextBrush" { Color: resource dyn "TextColor", Opacity: 0.45 }
+    SolidColorBrush Key="PrimaryInverseTextBrush" { Color: resource dyn "InverseTextColor", Opacity: 1 }
+    SolidColorBrush Key="SecondaryInverseTextBrush" { Color: resource dyn "InverseTextColor", Opacity: 0.7 }
+    SolidColorBrush Key="DimInverseTextBrush" { Color: resource dyn "InverseTextColor", Opacity: 0.52 }
+    SolidColorBrush Key="AccentTextBrush" { Color: resource dyn "AccentColor", Opacity: 1 }
+    SolidColorBrush Key="DividerBrush" { Color: resource dyn "TextColor", Opacity: 0.12 }
+    SolidColorBrush Key="InverseDividerBrush" { Color: resource dyn "InverseTextColor", Opacity: 0.12 }
+
+    // Styles
+    Style {
+      TargetType: "Image"
+      #Setter("RenderOptions.BitmapScalingMode", "HighQuality")
+    }
+
+    Style {
+      TargetType: "ProgressBar"
+      BasedOn: resource "MaterialDesignLinearProgressBar"
+      #Setter("Foreground", resource dyn "SecondaryAccentBrush")
+      #Setter("Height", 2)
+      #Setter("Minimum", 0)
+      #Setter("Maximum", 1)
+      #Setter("BorderThickness", 0)
+    }
+
+    Style {
+      TargetType: "TextBox"
+      BasedOn: resource "MaterialDesignTextBox"
+      #Setter("Foreground", resource dyn "PrimaryTextBrush")
+    }
+
+    Style {
+      TargetType: "ComboBox"
+      BasedOn: resource "MaterialDesignComboBox"
+      #Setter("Foreground", resource dyn "PrimaryTextBrush")
+    }
+
+    // Container
+    Container Key="Container" { }
+  }
+}

DiscordChatExporter/App.ammy.cs

@@ -0,0 +1,17 @@
+using System.Windows;
+
+namespace DiscordChatExporter
+{
+    public partial class App
+    {
+        private void App_Startup(object sender, StartupEventArgs e)
+        {
+            Container.Init();
+        }
+
+        private void App_Exit(object sender, ExitEventArgs e)
+        {
+            Container.Cleanup();
+        }
+    }
+}

DiscordChatExporter/App.config

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<configuration>
+    <startup> 
+        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.1" />
+    </startup>
+</configuration>

DiscordChatExporter/Container.cs

@@ -0,0 +1,43 @@
+using DiscordChatExporter.Services;
+using DiscordChatExporter.ViewModels;
+using GalaSoft.MvvmLight.Ioc;
+using Microsoft.Practices.ServiceLocation;
+
+namespace DiscordChatExporter
+{
+    public class Container
+    {
+        public static void Init()
+        {
+            ServiceLocator.SetLocatorProvider(() => SimpleIoc.Default);
+
+            // Settings
+            SimpleIoc.Default.Register<ISettingsService, SettingsService>();
+            ServiceLocator.Current.GetInstance<ISettingsService>().Load();
+
+            // Services
+            SimpleIoc.Default.Register<IDataService, DataService>();
+            SimpleIoc.Default.Register<IExportService, ExportService>();
+            SimpleIoc.Default.Register<IMessageGroupService, MessageGroupService>();
+
+            // View models
+            SimpleIoc.Default.Register<IErrorViewModel, ErrorViewModel>(true);
+            SimpleIoc.Default.Register<IExportDoneViewModel, ExportDoneViewModel>(true);
+            SimpleIoc.Default.Register<IExportSetupViewModel, ExportSetupViewModel>(true);
+            SimpleIoc.Default.Register<IMainViewModel, MainViewModel>(true);
+            SimpleIoc.Default.Register<ISettingsViewModel, SettingsViewModel>(true);
+        }
+
+        public static void Cleanup()
+        {
+            // Settings
+            ServiceLocator.Current.GetInstance<ISettingsService>().Save();
+        }
+
+        public IErrorViewModel ErrorViewModel => ServiceLocator.Current.GetInstance<IErrorViewModel>();
+        public IExportDoneViewModel ExportDoneViewModel => ServiceLocator.Current.GetInstance<IExportDoneViewModel>();
+        public IExportSetupViewModel ExportSetupViewModel => ServiceLocator.Current.GetInstance<IExportSetupViewModel>();
+        public IMainViewModel MainViewModel => ServiceLocator.Current.GetInstance<IMainViewModel>();
+        public ISettingsViewModel SettingsViewModel => ServiceLocator.Current.GetInstance<ISettingsViewModel>();
+    }
+}

DiscordChatExporter/DiscordChatExporter.csproj

@@ -1,26 +1,211 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<?xml version="1.0" encoding="utf-8"?>
-
+<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
-    <OutputType>Exe</OutputType>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
-    <TargetFramework>net45</TargetFramework>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
-    <AssemblyVersion>1.0.0</AssemblyVersion>
+    <ProjectGuid>{732A67AF-93DE-49DF-B10F-FD74710B7863}</ProjectGuid>
-    <FileVersion>$(AssemblyVersion)</FileVersion>
+    <OutputType>WinExe</OutputType>
-    <Company>Tyrrrz</Company>
+    <RootNamespace>DiscordChatExporter</RootNamespace>
-    <Copyright>Copyright (c) 2017 Alexey Golub</Copyright>
+    <AssemblyName>DiscordChatExporter</AssemblyName>
+    <TargetFrameworkVersion>v4.6.1</TargetFrameworkVersion>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{60dc8134-eba5-43b8-bcc9-bb4bc16c2548};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <WarningLevel>4</WarningLevel>
+    <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
+    <NuGetPackageImportStamp>
+    </NuGetPackageImportStamp>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <PlatformTarget>AnyCPU</PlatformTarget>
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <PlatformTarget>AnyCPU</PlatformTarget>
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
   </PropertyGroup>
-
-  <ItemGroup>
-    <EmbeddedResource Include="Services\ExportTemplate.html" />
-  </ItemGroup>
-
-  <ItemGroup>
-    <PackageReference Include="HtmlAgilityPack" Version="1.5.1" />
-    <PackageReference Include="Newtonsoft.json" Version="10.0.3" />
-    <PackageReference Include="Tyrrrz.Extensions" Version="1.4.0" />
-  </ItemGroup>
-
   <ItemGroup>
+    <Reference Include="AmmySidekick, Version=1.0.0.0, Culture=neutral, PublicKeyToken=7c1296d24569a67d, processorArchitecture=MSIL">
+      <HintPath>..\packages\Ammy.WPF.1.2.87\lib\net40\AmmySidekick.dll</HintPath>
+    </Reference>
+    <Reference Include="GalaSoft.MvvmLight, Version=5.3.0.19026, Culture=neutral, PublicKeyToken=e7570ab207bcb616, processorArchitecture=MSIL">
+      <HintPath>..\packages\MvvmLightLibs.5.3.0.0\lib\net45\GalaSoft.MvvmLight.dll</HintPath>
+    </Reference>
+    <Reference Include="GalaSoft.MvvmLight.Extras, Version=5.3.0.19032, Culture=neutral, PublicKeyToken=669f0b5e8f868abf, processorArchitecture=MSIL">
+      <HintPath>..\packages\MvvmLightLibs.5.3.0.0\lib\net45\GalaSoft.MvvmLight.Extras.dll</HintPath>
+    </Reference>
+    <Reference Include="GalaSoft.MvvmLight.Platform, Version=5.3.0.19032, Culture=neutral, PublicKeyToken=5f873c45e98af8a1, processorArchitecture=MSIL">
+      <HintPath>..\packages\MvvmLightLibs.5.3.0.0\lib\net45\GalaSoft.MvvmLight.Platform.dll</HintPath>
+    </Reference>
+    <Reference Include="MaterialDesignColors, Version=1.1.3.0, Culture=neutral, processorArchitecture=MSIL">
+      <HintPath>..\packages\MaterialDesignColors.1.1.3\lib\net45\MaterialDesignColors.dll</HintPath>
+    </Reference>
+    <Reference Include="MaterialDesignThemes.Wpf, Version=2.3.1.953, Culture=neutral, processorArchitecture=MSIL">
+      <HintPath>..\packages\MaterialDesignThemes.2.3.1.953\lib\net45\MaterialDesignThemes.Wpf.dll</HintPath>
+    </Reference>
+    <Reference Include="Microsoft.Practices.ServiceLocation, Version=1.3.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
+      <HintPath>..\packages\CommonServiceLocator.1.3\lib\portable-net4+sl5+netcore45+wpa81+wp8\Microsoft.Practices.ServiceLocation.dll</HintPath>
+    </Reference>
+    <Reference Include="Newtonsoft.Json, Version=10.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
+      <HintPath>..\packages\Newtonsoft.Json.10.0.3\lib\net45\Newtonsoft.Json.dll</HintPath>
+    </Reference>
+    <Reference Include="System" />
+    <Reference Include="System.Core" />
     <Reference Include="System.Net.Http" />
+    <Reference Include="System.Windows.Interactivity, Version=4.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
+      <HintPath>..\packages\MvvmLightLibs.5.3.0.0\lib\net45\System.Windows.Interactivity.dll</HintPath>
+    </Reference>
+    <Reference Include="System.Xaml">
+      <RequiredTargetFramework>4.0</RequiredTargetFramework>
+    </Reference>
+    <Reference Include="System.Xml" />
+    <Reference Include="Tyrrrz.Extensions, Version=1.4.1.0, Culture=neutral, processorArchitecture=MSIL">
+      <HintPath>..\packages\Tyrrrz.Extensions.1.4.1\lib\net45\Tyrrrz.Extensions.dll</HintPath>
+    </Reference>
+    <Reference Include="Tyrrrz.Settings, Version=1.3.0.0, Culture=neutral, processorArchitecture=MSIL">
+      <HintPath>..\packages\Tyrrrz.Settings.1.3.0\lib\net45\Tyrrrz.Settings.dll</HintPath>
+    </Reference>
+    <Reference Include="WindowsBase" />
+    <Reference Include="PresentationCore" />
+    <Reference Include="PresentationFramework" />
   </ItemGroup>
-
+  <ItemGroup>
+    <Compile Include="Exceptions\HttpErrorStatusCodeException.cs" />
+    <Compile Include="Messages\ShowErrorMessage.cs" />
+    <Compile Include="Messages\ShowExportDoneMessage.cs" />
+    <Compile Include="Messages\ShowExportSetupMessage.cs" />
+    <Compile Include="Messages\ShowSettingsMessage.cs" />
+    <Compile Include="Messages\StartExportMessage.cs" />
+    <Compile Include="Models\AttachmentType.cs" />
+    <Compile Include="Models\ChannelChatLog.cs" />
+    <Compile Include="Models\ChannelType.cs" />
+    <Compile Include="Models\ExportFormat.cs" />
+    <Compile Include="Models\Extensions.cs" />
+    <Compile Include="Models\Role.cs" />
+    <Compile Include="Models\MessageType.cs" />
+    <Compile Include="Services\IMessageGroupService.cs" />
+    <Compile Include="Services\MessageGroupService.cs" />
+    <Compile Include="ViewModels\ErrorViewModel.cs" />
+    <Compile Include="ViewModels\ExportSetupViewModel.cs" />
+    <Compile Include="ViewModels\IErrorViewModel.cs" />
+    <Compile Include="ViewModels\IExportSetupViewModel.cs" />
+    <Compile Include="ViewModels\ISettingsViewModel.cs" />
+    <Compile Include="ViewModels\IExportDoneViewModel.cs" />
+    <Compile Include="ViewModels\SettingsViewModel.cs" />
+    <Compile Include="ViewModels\ExportDoneViewModel.cs" />
+    <Compile Include="Views\ErrorDialog.ammy.cs">
+      <DependentUpon>ErrorDialog.ammy</DependentUpon>
+    </Compile>
+    <Compile Include="Views\ExportDoneDialog.ammy.cs">
+      <DependentUpon>ExportDoneDialog.ammy</DependentUpon>
+    </Compile>
+    <Compile Include="Views\ExportSetupDialog.ammy.cs">
+      <DependentUpon>ExportSetupDialog.ammy</DependentUpon>
+    </Compile>
+    <Compile Include="Views\SettingsDialog.ammy.cs">
+      <DependentUpon>SettingsDialog.ammy</DependentUpon>
+    </Compile>
+    <Page Include="App.g.xaml">
+      <SubType>Designer</SubType>
+      <Generator>XamlIntelliSenseFileGenerator</Generator>
+      <DependentUpon>App.ammy</DependentUpon>
+    </Page>
+    <Page Include="Views\ErrorDialog.g.xaml">
+      <SubType>Designer</SubType>
+      <Generator>MSBuild:Compile</Generator>
+      <DependentUpon>ErrorDialog.ammy</DependentUpon>
+    </Page>
+    <Page Include="Views\ExportDoneDialog.g.xaml">
+      <SubType>Designer</SubType>
+      <Generator>MSBuild:Compile</Generator>
+      <DependentUpon>ExportDoneDialog.ammy</DependentUpon>
+    </Page>
+    <Page Include="Views\ExportSetupDialog.g.xaml">
+      <SubType>Designer</SubType>
+      <Generator>MSBuild:Compile</Generator>
+      <DependentUpon>ExportSetupDialog.ammy</DependentUpon>
+    </Page>
+    <Page Include="Views\MainWindow.g.xaml">
+      <SubType>Designer</SubType>
+      <Generator>MSBuild:Compile</Generator>
+      <DependentUpon>MainWindow.ammy</DependentUpon>
+    </Page>
+    <Compile Include="App.ammy.cs">
+      <DependentUpon>App.ammy</DependentUpon>
+    </Compile>
+    <Compile Include="Container.cs" />
+    <Compile Include="Models\Attachment.cs" />
+    <Compile Include="Models\Channel.cs" />
+    <Compile Include="Models\Guild.cs" />
+    <Compile Include="Models\Message.cs" />
+    <Compile Include="Models\MessageGroup.cs" />
+    <Compile Include="Models\User.cs" />
+    <Compile Include="Program.cs" />
+    <Compile Include="Services\DataService.cs" />
+    <Compile Include="Services\ExportService.cs" />
+    <Compile Include="Services\IDataService.cs" />
+    <Compile Include="Services\IExportService.cs" />
+    <Compile Include="Services\ISettingsService.cs" />
+    <Compile Include="Services\SettingsService.cs" />
+    <Compile Include="ViewModels\IMainViewModel.cs" />
+    <Compile Include="ViewModels\MainViewModel.cs" />
+    <Compile Include="Views\MainWindow.ammy.cs">
+      <DependentUpon>MainWindow.ammy</DependentUpon>
+    </Compile>
+    <Page Include="Views\SettingsDialog.g.xaml">
+      <SubType>Designer</SubType>
+      <Generator>MSBuild:Compile</Generator>
+      <DependentUpon>SettingsDialog.ammy</DependentUpon>
+    </Page>
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="Properties\AssemblyInfo.cs">
+      <SubType>Code</SubType>
+    </Compile>
+    <Compile Include="Properties\Resources.Designer.cs">
+      <AutoGen>True</AutoGen>
+      <DesignTime>True</DesignTime>
+      <DependentUpon>Resources.resx</DependentUpon>
+    </Compile>
+    <EmbeddedResource Include="Properties\Resources.resx">
+      <Generator>ResXFileCodeGenerator</Generator>
+      <LastGenOutput>Resources.Designer.cs</LastGenOutput>
+    </EmbeddedResource>
+    <None Include="App.ammy" />
+    <None Include="lib.ammy" />
+    <None Include="packages.config">
+      <SubType>Designer</SubType>
+    </None>
+    <None Include="Views\ErrorDialog.ammy" />
+    <None Include="Views\ExportDoneDialog.ammy" />
+    <None Include="Views\ExportSetupDialog.ammy" />
+    <None Include="Views\MainWindow.ammy" />
+    <None Include="Views\SettingsDialog.ammy" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="App.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <EmbeddedResource Include="Resources\ExportService\DarkTheme.css" />
+    <EmbeddedResource Include="Resources\ExportService\LightTheme.css" />
+  </ItemGroup>
+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+  <Import Project="..\packages\Ammy.1.2.87\build\Ammy.targets" Condition="Exists('..\packages\Ammy.1.2.87\build\Ammy.targets')" />
+  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
+    <PropertyGroup>
+      <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
+    </PropertyGroup>
+    <Error Condition="!Exists('..\packages\Ammy.1.2.87\build\Ammy.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\Ammy.1.2.87\build\Ammy.targets'))" />
+  </Target>
 </Project>

DiscordChatExporter/Exceptions/HttpErrorStatusCodeException.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Net;
+
+namespace DiscordChatExporter.Exceptions
+{
+    public class HttpErrorStatusCodeException : Exception
+    {
+        public HttpStatusCode StatusCode { get; }
+
+        public HttpErrorStatusCodeException(HttpStatusCode statusCode)
+        {
+            StatusCode = statusCode;
+        }
+    }
+}

DiscordChatExporter/Messages/ShowErrorMessage.cs

@@ -0,0 +1,12 @@
+namespace DiscordChatExporter.Messages
+{
+    public class ShowErrorMessage
+    {
+        public string Message { get; }
+
+        public ShowErrorMessage(string message)
+        {
+            Message = message;
+        }
+    }
+}

DiscordChatExporter/Messages/ShowExportDoneMessage.cs

@@ -0,0 +1,12 @@
+namespace DiscordChatExporter.Messages
+{
+    public class ShowExportDoneMessage
+    {
+        public string FilePath { get; }
+
+        public ShowExportDoneMessage(string filePath)
+        {
+            FilePath = filePath;
+        }
+    }
+}

DiscordChatExporter/Messages/ShowExportSetupMessage.cs

@@ -0,0 +1,17 @@
+using DiscordChatExporter.Models;
+
+namespace DiscordChatExporter.Messages
+{
+    public class ShowExportSetupMessage
+    {
+        public Guild Guild { get; }
+
+        public Channel Channel { get; }
+
+        public ShowExportSetupMessage(Guild guild, Channel channel)
+        {
+            Guild = guild;
+            Channel = channel;
+        }
+    }
+}

DiscordChatExporter/Messages/ShowSettingsMessage.cs

@@ -0,0 +1,6 @@
+namespace DiscordChatExporter.Messages
+{
+    public class ShowSettingsMessage
+    {
+    }
+}

DiscordChatExporter/Messages/StartExportMessage.cs

@@ -0,0 +1,28 @@
+using System;
+using DiscordChatExporter.Models;
+
+namespace DiscordChatExporter.Messages
+{
+    public class StartExportMessage
+    {
+        public Channel Channel { get; }
+
+        public string FilePath { get; }
+
+        public ExportFormat Format { get; }
+
+        public DateTime? From { get; }
+
+        public DateTime? To { get; }
+
+        public StartExportMessage(Channel channel, string filePath, ExportFormat format,
+            DateTime? from, DateTime? to)
+        {
+            Channel = channel;
+            FilePath = filePath;
+            Format = format;
+            From = from;
+            To = to;
+        }
+    }
+}

DiscordChatExporter/Models/Attachment.cs

@@ -4,18 +4,21 @@
     {
         public string Id { get; }
 
+        public AttachmentType Type { get; }
+
         public string Url { get; }
 
         public string FileName { get; }
 
-        public bool IsImage { get; }
+        public long FileSize { get; }
 
-        public Attachment(string id, string url, string fileName, bool isImage)
+        public Attachment(string id, AttachmentType type, string url, string fileName, long fileSize)
         {
             Id = id;
+            Type = type;
             Url = url;
             FileName = fileName;
-            IsImage = isImage;
+            FileSize = fileSize;
         }
     }
 }

DiscordChatExporter/Models/AttachmentType.cs

@@ -0,0 +1,8 @@
+namespace DiscordChatExporter.Models
+{
+    public enum AttachmentType
+    {
+        Other,
+        Image
+    }
+}

DiscordChatExporter/Models/Channel.cs

@@ -0,0 +1,23 @@
+namespace DiscordChatExporter.Models
+{
+    public class Channel
+    {
+        public string Id { get; }
+
+        public string Name { get; }
+
+        public ChannelType Type { get; }
+
+        public Channel(string id, string name, ChannelType type)
+        {
+            Id = id;
+            Name = name;
+            Type = type;
+        }
+
+        public override string ToString()
+        {
+            return Name;
+        }
+    }
+}

DiscordChatExporter/Models/ChannelChatLog.cs

@@ -0,0 +1,24 @@
+using System.Collections.Generic;
+
+namespace DiscordChatExporter.Models
+{
+    public class ChannelChatLog
+    {
+        public Guild Guild { get; }
+
+        public Channel Channel { get; }
+
+        public IReadOnlyList<MessageGroup> MessageGroups { get; }
+
+        public int TotalMessageCount { get; }
+
+        public ChannelChatLog(Guild guild, Channel channel, IReadOnlyList<MessageGroup> messageGroups,
+            int totalMessageCount)
+        {
+            Guild = guild;
+            Channel = channel;
+            MessageGroups = messageGroups;
+            TotalMessageCount = totalMessageCount;
+        }
+    }
+}

DiscordChatExporter/Models/ChannelType.cs

@@ -0,0 +1,11 @@
+namespace DiscordChatExporter.Models
+{
+    public enum ChannelType
+    {
+        GuildTextChat,
+        DirectTextChat,
+        GuildVoiceChat,
+        DirectGroupTextChat,
+        Category
+    }
+}

DiscordChatExporter/Models/ChatLog.cs

@@ -1,22 +0,0 @@
-using System.Collections.Generic;
-using System.Linq;
-using Tyrrrz.Extensions;
-
-namespace DiscordChatExporter.Models
-{
-    public class ChatLog
-    {
-        public string ChannelId { get; }
-
-        public IReadOnlyList<User> Participants { get; }
-
-        public IReadOnlyList<Message> Messages { get; }
-
-        public ChatLog(string channelId, IEnumerable<Message> messages)
-        {
-            ChannelId = channelId;
-            Messages = messages.ToArray();
-            Participants = Messages.Select(m => m.Author).Distinct(a => a.Name).ToArray();
-        }
-    }
-}

DiscordChatExporter/Models/ExportFormat.cs

@@ -0,0 +1,9 @@
+namespace DiscordChatExporter.Models
+{
+    public enum ExportFormat
+    {
+        PlainText,
+        HtmlDark,
+        HtmlLight
+    }
+}

DiscordChatExporter/Models/Extensions.cs

@@ -0,0 +1,31 @@
+using System;
+
+namespace DiscordChatExporter.Models
+{
+    public static class Extensions
+    {
+        public static string GetFileExtension(this ExportFormat format)
+        {
+            if (format == ExportFormat.PlainText)
+                return "txt";
+            if (format == ExportFormat.HtmlDark)
+                return "html";
+            if (format == ExportFormat.HtmlLight)
+                return "html";
+
+            throw new NotImplementedException();
+        }
+
+        public static string GetDisplayName(this ExportFormat format)
+        {
+            if (format == ExportFormat.PlainText)
+                return "Plain Text";
+            if (format == ExportFormat.HtmlDark)
+                return "HTML (Dark)";
+            if (format == ExportFormat.HtmlLight)
+                return "HTML (Light)";
+
+            throw new NotImplementedException();
+        }
+    }
+}

DiscordChatExporter/Models/Guild.cs

@@ -0,0 +1,29 @@
+using Tyrrrz.Extensions;
+
+namespace DiscordChatExporter.Models
+{
+    public class Guild
+    {
+        public string Id { get; }
+
+        public string Name { get; }
+
+        public string IconHash { get; }
+
+        public string IconUrl => IconHash.IsNotBlank()
+            ? $"https://cdn.discordapp.com/icons/{Id}/{IconHash}.png"
+            : "https://cdn.discordapp.com/embed/avatars/0.png";
+
+        public Guild(string id, string name, string iconHash)
+        {
+            Id = id;
+            Name = name;
+            IconHash = iconHash;
+        }
+
+        public override string ToString()
+        {
+            return Name;
+        }
+    }
+}

DiscordChatExporter/Models/Message.cs

@@ -1,6 +1,5 @@
 using System;
 using System.Collections.Generic;
-using System.Linq;
 
 namespace DiscordChatExporter.Models
 {
@@ -8,24 +7,37 @@ namespace DiscordChatExporter.Models
     {
         public string Id { get; }
 
+        public User Author { get; }
+
         public DateTime TimeStamp { get; }
 
         public DateTime? EditedTimeStamp { get; }
 
-        public User Author { get; }
-
         public string Content { get; }
 
         public IReadOnlyList<Attachment> Attachments { get; }
 
-        public Message(string id, DateTime timeStamp, DateTime? editedTimeStamp, User author, string content, IEnumerable<Attachment> attachments)
+        public IReadOnlyList<User> MentionedUsers { get; }
+
+        public IReadOnlyList<Role> MentionedRoles { get; }
+
+        public IReadOnlyList<Channel> MentionedChannels { get; }
+
+        public Message(string id, User author,
+            DateTime timeStamp, DateTime? editedTimeStamp,
+            string content, IReadOnlyList<Attachment> attachments,
+            IReadOnlyList<User> mentionedUsers, IReadOnlyList<Role> mentionedRoles,
+            IReadOnlyList<Channel> mentionedChannels)
         {
             Id = id;
+            Author = author;
             TimeStamp = timeStamp;
             EditedTimeStamp = editedTimeStamp;
-            Author = author;
             Content = content;
-            Attachments = attachments.ToArray();
+            Attachments = attachments;
+            MentionedUsers = mentionedUsers;
+            MentionedRoles = mentionedRoles;
+            MentionedChannels = mentionedChannels;
         }
 
         public override string ToString()

DiscordChatExporter/Models/MessageGroup.cs

@@ -1,6 +1,5 @@
 using System;
 using System.Collections.Generic;
-using System.Linq;
 
 namespace DiscordChatExporter.Models
 {
@@ -8,15 +7,15 @@ namespace DiscordChatExporter.Models
     {
         public User Author { get; }
 
-        public DateTime FirstTimeStamp { get; }
+        public DateTime TimeStamp { get; }
 
         public IReadOnlyList<Message> Messages { get; }
 
-        public MessageGroup(User author, DateTime firstTimeStamp, IEnumerable<Message> messages)
+        public MessageGroup(User author, DateTime timeStamp, IReadOnlyList<Message> messages)
         {
             Author = author;
-            FirstTimeStamp = firstTimeStamp;
+            TimeStamp = timeStamp;
-            Messages = messages.ToArray();
+            Messages = messages;
         }
     }
 }

DiscordChatExporter/Models/MessageType.cs

@@ -0,0 +1,14 @@
+namespace DiscordChatExporter.Models
+{
+    public enum MessageType
+    {
+        Default,
+        RecipientAdd,
+        RecipientRemove,
+        Call,
+        ChannelNameChange,
+        ChannelIconChange,
+        ChannelPinnedMessage,
+        GuildMemberJoin
+    }
+}

DiscordChatExporter/Models/Options.cs

@@ -1,15 +0,0 @@
-namespace DiscordChatExporter.Models
-{
-    public class Options
-    {
-        public string Token { get; }
-
-        public string ChannelId { get; }
-
-        public Options(string token, string channelId)
-        {
-            Token = token;
-            ChannelId = channelId;
-        }
-    }
-}

DiscordChatExporter/Models/Role.cs

@@ -0,0 +1,20 @@
+namespace DiscordChatExporter.Models
+{
+    public class Role
+    {
+        public string Id { get; }
+
+        public string Name { get; }
+
+        public Role(string id, string name)
+        {
+            Id = id;
+            Name = name;
+        }
+
+        public override string ToString()
+        {
+            return Name;
+        }
+    }
+}

DiscordChatExporter/Models/User.cs

@@ -6,24 +6,27 @@ namespace DiscordChatExporter.Models
     {
         public string Id { get; }
 
+        public int Discriminator { get; }
+
         public string Name { get; }
 
         public string AvatarHash { get; }
 
         public string AvatarUrl => AvatarHash.IsNotBlank()
-            ? $"https://cdn.discordapp.com/avatars/{Id}/{AvatarHash}.png?size=256"
+            ? $"https://cdn.discordapp.com/avatars/{Id}/{AvatarHash}.png"
-            : "https://discordapp.com/assets/6debd47ed13483642cf09e832ed0bc1b.png";
+            : $"https://cdn.discordapp.com/embed/avatars/{Discriminator % 5}.png";
 
-        public User(string id, string name, string avatarHash)
+        public User(string id, int discriminator, string name, string avatarHash)
         {
             Id = id;
+            Discriminator = discriminator;
             Name = name;
             AvatarHash = avatarHash;
         }
 
         public override string ToString()
         {
-            return Name;
+            return $"{Name}#{Discriminator}";
         }
     }
 }

DiscordChatExporter/Program.cs

@@ -1,66 +1,36 @@
 using System;
-using System.Collections.Generic;
+using System.IO;
-using System.Text.RegularExpressions;
+using System.Reflection;
-using System.Threading.Tasks;
+using System.Resources;
-using DiscordChatExporter.Models;
+using AmmySidekick;
-using DiscordChatExporter.Services;
-using Tyrrrz.Extensions;
 
 namespace DiscordChatExporter
 {
     public static class Program
     {
-        private static readonly DiscordApiService DiscordApiService = new DiscordApiService();
+        [STAThread]
-        private static readonly ExportService ExportService = new ExportService();
+        public static void Main()
-
-        private static Options GetOptions(string[] args)
         {
-            // Parse the arguments
+            var app = new App();
-            var argsDic = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase);
+            app.InitializeComponent();
-            foreach (string arg in args)
+
+            RuntimeUpdateHandler.Register(app, $"/{Ammy.GetAssemblyName(app)};component/App.g.xaml");
+
+            app.Run();
+        }
+
+        public static string GetResourceString(string resourcePath)
+        {
+            var assembly = Assembly.GetExecutingAssembly();
+            var stream = assembly.GetManifestResourceStream(resourcePath);
+            if (stream == null)
+                throw new MissingManifestResourceException("Could not find resource");
+
+            using (stream)
+            using (var reader = new StreamReader(stream))
             {
-                var match = Regex.Match(arg, "/(.*?):\"?(.*?)\"?$");
+                return reader.ReadToEnd();
-                string key = match.Groups[1].Value;
-                string value = match.Groups[2].Value;
-
-                if (key.IsBlank())
-                    continue;
-
-                argsDic[key] = value;
             }
-
-            // Extract required arguments
-            string token = argsDic.GetOrDefault("token");
-            string channelId = argsDic.GetOrDefault("channelId");
-
-            // Verify arguments
-            if (token.IsBlank() || channelId.IsBlank())
-                throw new ArgumentException("Some or all required command line arguments are missing");
-
-            // Create option set
-            return new Options(token, channelId);
-        }
-
-        private static async Task MainAsync(string[] args)
-        {
-            // Parse cmd args
-            var options = GetOptions(args);
-
-            // Get messages
-            Console.WriteLine("Getting messages...");
-            var messages = await DiscordApiService.GetMessagesAsync(options.Token, options.ChannelId);
-            var chatLog = new ChatLog(options.ChannelId, messages);
-
-            // Export
-            Console.WriteLine("Exporting messages...");
-            ExportService.Export($"{options.ChannelId}.html", chatLog);
-        }
-
-        public static void Main(string[] args)
-        {
-            Console.Title = "Discord Chat Exporter";
-
-            MainAsync(args).GetAwaiter().GetResult();
         }
     }
 }

DiscordChatExporter/Properties/AssemblyInfo.cs

@@ -0,0 +1,7 @@
+using System.Reflection;
+
+[assembly: AssemblyTitle("DiscordChatExporter")]
+[assembly: AssemblyCompany("Tyrrrz")]
+[assembly: AssemblyCopyright("Copyright (c) 2017 Alexey Golub")]
+[assembly: AssemblyVersion("2.3")]
+[assembly: AssemblyFileVersion("2.3")]

DiscordChatExporter/Properties/Resources.Designer.cs

@@ -0,0 +1,71 @@
+//------------------------------------------------------------------------------
+// <auto-generated>
+//     This code was generated by a tool.
+//     Runtime Version:4.0.30319.42000
+//
+//     Changes to this file may cause incorrect behavior and will be lost if
+//     the code is regenerated.
+// </auto-generated>
+//------------------------------------------------------------------------------
+
+namespace DiscordChatExporter.Properties
+{
+
+
+    /// <summary>
+    ///   A strongly-typed resource class, for looking up localized strings, etc.
+    /// </summary>
+    // This class was auto-generated by the StronglyTypedResourceBuilder
+    // class via a tool like ResGen or Visual Studio.
+    // To add or remove a member, edit your .ResX file then rerun ResGen
+    // with the /str option, or rebuild your VS project.
+    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Resources.Tools.StronglyTypedResourceBuilder", "4.0.0.0")]
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+    [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
+    internal class Resources
+    {
+
+        private static global::System.Resources.ResourceManager resourceMan;
+
+        private static global::System.Globalization.CultureInfo resourceCulture;
+
+        [global::System.Diagnostics.CodeAnalysis.SuppressMessageAttribute("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode")]
+        internal Resources()
+        {
+        }
+
+        /// <summary>
+        ///   Returns the cached ResourceManager instance used by this class.
+        /// </summary>
+        [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
+        internal static global::System.Resources.ResourceManager ResourceManager
+        {
+            get
+            {
+                if ((resourceMan == null))
+                {
+                    global::System.Resources.ResourceManager temp = new global::System.Resources.ResourceManager("DiscordChatExporter.Properties.Resources", typeof(Resources).Assembly);
+                    resourceMan = temp;
+                }
+                return resourceMan;
+            }
+        }
+
+        /// <summary>
+        ///   Overrides the current thread's CurrentUICulture property for all
+        ///   resource lookups using this strongly typed resource class.
+        /// </summary>
+        [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
+        internal static global::System.Globalization.CultureInfo Culture
+        {
+            get
+            {
+                return resourceCulture;
+            }
+            set
+            {
+                resourceCulture = value;
+            }
+        }
+    }
+}

DiscordChatExporter/Properties/Resources.resx

@@ -0,0 +1,117 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>

DiscordChatExporter/Resources/ExportService/DarkTheme.css

@@ -0,0 +1,130 @@
+body {
+    background-color: #36393E;
+    color: rgba(255, 255, 255, 0.7);
+    font-family: Whitney, Helvetica Neue, Helvetica, Arial, sans-serif;
+    font-size: 16px;
+}
+
+a {
+    color: #0096CF;
+    text-decoration: none;
+}
+
+a:hover { text-decoration: underline; }
+
+div.pre {
+    background-color: #2F3136;
+    color: rgb(131, 148, 150);
+    font-family: Consolas, Courier New, Courier, Monospace;
+    margin-top: 4px;
+    padding: 8px;
+    white-space: pre-wrap;
+}
+
+span.pre {
+    background-color: #2F3136;
+    font-family: Consolas, Courier New, Courier, Monospace;
+    padding-left: 2px;
+    padding-right: 2px;
+    white-space: pre-wrap;
+}
+
+div#info {
+    display: flex;
+    margin-bottom: 10px;
+    margin-left: 5px;
+    margin-right: 5px;
+    max-width: 100%;
+}
+
+div#log { max-width: 100%; }
+
+img.guild-icon {
+    max-height: 64px;
+    max-width: 64px;
+}
+
+div.info-right {
+    flex: 1;
+    margin-left: 10px;
+}
+
+div.guild-name {
+    color: #FFFFFF;
+    font-size: 1.4rem;
+}
+
+div.channel-name {
+    color: #FFFFFF;
+    font-size: 1.2rem;
+}
+
+div.misc { margin-top: 2px; }
+
+div.msg {
+    border-top: 1px solid rgba(255, 255, 255, 0.04);
+    display: flex;
+    margin-left: 10px;
+    margin-right: 10px;
+    padding-bottom: 15px;
+    padding-top: 15px;
+}
+
+div.msg-left {
+    height: 40px;
+    width: 40px;
+}
+
+img.msg-avatar {
+    border-radius: 50%;
+    height: 40px;
+    width: 40px;
+}
+
+div.msg-right {
+    flex: 1;
+    margin-left: 20px;
+}
+
+span.msg-user {
+    color: #FFFFFF;
+    font-size: 1rem;
+}
+
+span.msg-date {
+    color: rgba(255, 255, 255, 0.2);
+    font-size: .75rem;
+    margin-left: 5px;
+}
+
+span.msg-edited {
+    color: rgba(255, 255, 255, 0.2);
+    font-size: .8rem;
+    margin-left: 5px;
+}
+
+div.msg-content {
+    font-size: .9375rem;
+    padding-top: 5px;
+    word-break: break-all;
+}
+
+div.msg-attachment {
+    margin-bottom: 5px;
+    margin-top: 5px;
+}
+
+img.msg-attachment {
+    max-height: 500px;
+    max-width: 50%;
+}
+
+img.emoji {
+    height: 24px;
+    width: 24px;
+    vertical-align: -.4em;
+}
+
+span.mention {
+    font-weight: 600;
+}

DiscordChatExporter/Resources/ExportService/LightTheme.css

@@ -0,0 +1,130 @@
+body {
+    background-color: #FFFFFF;
+    color: #737F8D;
+    font-family: Whitney, Helvetica Neue, Helvetica, Arial, sans-serif;
+    font-size: 16px;
+}
+
+a {
+    color: #00B0F4;
+    text-decoration: none;
+}
+
+a:hover { text-decoration: underline; }
+
+div.pre {
+    background-color: #F9F9F9;
+    color: rgb(101, 123, 131);
+    font-family: Consolas, Courier New, Courier, Monospace;
+    margin-top: 4px;
+    padding: 8px;
+    white-space: pre-wrap;
+}
+
+span.pre {
+    background-color: #F9F9F9;
+    font-family: Consolas, Courier New, Courier, Monospace;
+    padding-left: 2px;
+    padding-right: 2px;
+    white-space: pre-wrap;
+}
+
+div#info {
+    display: flex;
+    margin-bottom: 10px;
+    margin-left: 5px;
+    margin-right: 5px;
+    max-width: 100%;
+}
+
+div#log { max-width: 100%; }
+
+img.guild-icon {
+    max-height: 64px;
+    max-width: 64px;
+}
+
+div.info-right {
+    flex: 1;
+    margin-left: 10px;
+}
+
+div.guild-name {
+    color: #2F3136;
+    font-size: 1.4rem;
+}
+
+div.channel-name {
+    color: #2F3136;
+    font-size: 1.2rem;
+}
+
+div.misc { margin-top: 2px; }
+
+div.msg {
+    border-top: 1px solid #ECEEEF;
+    display: flex;
+    margin-left: 10px;
+    margin-right: 10px;
+    padding-bottom: 15px;
+    padding-top: 15px;
+}
+
+div.msg-left {
+    height: 40px;
+    width: 40px;
+}
+
+img.msg-avatar {
+    border-radius: 50%;
+    height: 40px;
+    width: 40px;
+}
+
+div.msg-right {
+    flex: 1;
+    margin-left: 20px;
+}
+
+span.msg-user {
+    color: #2F3136;
+    font-size: 1rem;
+}
+
+span.msg-date {
+    color: #99AAB5;
+    font-size: .75rem;
+    margin-left: 5px;
+}
+
+span.msg-edited {
+    color: #99AAB5;
+    font-size: .8rem;
+    margin-left: 5px;
+}
+
+div.msg-content {
+    font-size: .9375rem;
+    padding-top: 5px;
+    word-break: break-all;
+}
+
+div.msg-attachment {
+    margin-bottom: 5px;
+    margin-top: 5px;
+}
+
+img.msg-attachment {
+    max-height: 500px;
+    max-width: 50%;
+}
+
+img.emoji {
+    height: 24px;
+    width: 24px;
+    vertical-align: -.4em;
+}
+
+span.mention {
+    font-weight: 600;
+}

DiscordChatExporter/Services/DataService.cs

@@ -0,0 +1,296 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net.Http;
+using System.Text.RegularExpressions;
+using System.Threading.Tasks;
+using DiscordChatExporter.Exceptions;
+using DiscordChatExporter.Models;
+using Newtonsoft.Json.Linq;
+using Tyrrrz.Extensions;
+
+namespace DiscordChatExporter.Services
+{
+    public partial class DataService : IDataService, IDisposable
+    {
+        private const string ApiRoot = "https://discordapp.com/api/v6";
+
+        private readonly HttpClient _httpClient = new HttpClient();
+        private readonly Dictionary<string, Role> _roleCache = new Dictionary<string, Role>();
+        private readonly Dictionary<string, Channel> _channelCache = new Dictionary<string, Channel>();
+
+        private async Task<string> GetStringAsync(string url)
+        {
+            using (var response = await _httpClient.GetAsync(url))
+            {
+                // Check status code
+                // We throw our own exception here because default one doesn't have status code
+                if (!response.IsSuccessStatusCode)
+                    throw new HttpErrorStatusCodeException(response.StatusCode);
+
+                // Get content
+                return await response.Content.ReadAsStringAsync();
+            }
+        }
+
+        private async Task<IReadOnlyList<Role>> GetGuildRolesAsync(string token, string guildId)
+        {
+            // Form request url
+            var url = $"{ApiRoot}/guilds/{guildId}?token={token}";
+
+            // Get response
+            var content = await GetStringAsync(url);
+
+            // Parse
+            var roles = JToken.Parse(content)["roles"].Select(ParseRole).ToArray();
+
+            return roles;
+        }
+
+        public async Task<IReadOnlyList<Guild>> GetGuildsAsync(string token)
+        {
+            // Form request url
+            var url = $"{ApiRoot}/users/@me/guilds?token={token}&limit=100";
+
+            // Get response
+            var content = await GetStringAsync(url);
+
+            // Parse
+            var guilds = JArray.Parse(content).Select(ParseGuild).ToArray();
+
+            // HACK: also get roles for all of them
+            foreach (var guild in guilds)
+            {
+                var roles = await GetGuildRolesAsync(token, guild.Id);
+                foreach (var role in roles)
+                    _roleCache[role.Id] = role;
+            }
+
+            return guilds;
+        }
+
+        public async Task<IReadOnlyList<Channel>> GetDirectMessageChannelsAsync(string token)
+        {
+            // Form request url
+            var url = $"{ApiRoot}/users/@me/channels?token={token}";
+
+            // Get response
+            var content = await GetStringAsync(url);
+
+            // Parse
+            var channels = JArray.Parse(content).Select(ParseChannel).ToArray();
+
+            return channels;
+        }
+
+        public async Task<IReadOnlyList<Channel>> GetGuildChannelsAsync(string token, string guildId)
+        {
+            // Form request url
+            var url = $"{ApiRoot}/guilds/{guildId}/channels?token={token}";
+
+            // Get response
+            var content = await GetStringAsync(url);
+
+            // Parse
+            var channels = JArray.Parse(content).Select(ParseChannel).ToArray();
+
+            // Cache
+            foreach (var channel in channels)
+                _channelCache[channel.Id] = channel;
+
+            return channels;
+        }
+
+        public async Task<IReadOnlyList<Message>> GetChannelMessagesAsync(string token, string channelId,
+            DateTime? from, DateTime? to)
+        {
+            var result = new List<Message>();
+
+            // We are going backwards from last message to first
+            // collecting everything between them in batches
+            var beforeId = to != null ? DateTimeToSnowflake(to.Value) : null;
+            while (true)
+            {
+                // Form request url
+                var url = $"{ApiRoot}/channels/{channelId}/messages?token={token}&limit=100";
+                if (beforeId.IsNotBlank())
+                    url += $"&before={beforeId}";
+
+                // Get response
+                var content = await GetStringAsync(url);
+
+                // Parse
+                var messages = JArray.Parse(content).Select(j => ParseMessage(j, _roleCache, _channelCache));
+
+                // Add messages to list
+                string currentMessageId = null;
+                foreach (var message in messages)
+                {
+                    // Break when the message is older than from date
+                    if (from != null && message.TimeStamp < from)
+                    {
+                        currentMessageId = null;
+                        break;
+                    }
+
+                    // Add message
+                    result.Add(message);
+                    currentMessageId = message.Id;
+                }
+
+                // If no messages - break
+                if (currentMessageId == null)
+                    break;
+
+                // Otherwise offset the next request
+                beforeId = currentMessageId;
+            }
+
+            // Messages appear newest first, we need to reverse
+            result.Reverse();
+
+            return result;
+        }
+
+        protected virtual void Dispose(bool disposing)
+        {
+            if (disposing)
+            {
+                _httpClient.Dispose();
+            }
+        }
+
+        public void Dispose()
+        {
+            Dispose(true);
+            GC.SuppressFinalize(this);
+        }
+    }
+
+    public partial class DataService
+    {
+        private static string DateTimeToSnowflake(DateTime dateTime)
+        {
+            const long epoch = 62135596800000;
+            var unixTime = dateTime.ToUniversalTime().Ticks / TimeSpan.TicksPerMillisecond - epoch;
+            var value = ((ulong) unixTime - 1420070400000UL) << 22;
+            return value.ToString();
+        }
+
+        private static Guild ParseGuild(JToken token)
+        {
+            var id = token.Value<string>("id");
+            var name = token.Value<string>("name");
+            var iconHash = token.Value<string>("icon");
+
+            return new Guild(id, name, iconHash);
+        }
+
+        private static User ParseUser(JToken token)
+        {
+            var id = token.Value<string>("id");
+            var discriminator = token.Value<int>("discriminator");
+            var name = token.Value<string>("username");
+            var avatarHash = token.Value<string>("avatar");
+
+            return new User(id, discriminator, name, avatarHash);
+        }
+
+        private static Role ParseRole(JToken token)
+        {
+            var id = token.Value<string>("id");
+            var name = token.Value<string>("name");
+
+            return new Role(id, name);
+        }
+
+        private static Channel ParseChannel(JToken token)
+        {
+            // Get basic data
+            var id = token.Value<string>("id");
+            var type = (ChannelType) token.Value<int>("type");
+
+            // Extract name based on type
+            string name;
+            if (type.IsEither(ChannelType.DirectTextChat, ChannelType.DirectGroupTextChat))
+            {
+                var recipients = token["recipients"].Select(ParseUser);
+                name = recipients.Select(r => r.Name).JoinToString(", ");
+            }
+            else
+            {
+                name = token.Value<string>("name");
+            }
+
+            return new Channel(id, name, type);
+        }
+
+        private static Message ParseMessage(JToken token,
+            IDictionary<string, Role> roles, IDictionary<string, Channel> channels)
+        {
+            // Get basic data
+            var id = token.Value<string>("id");
+            var timeStamp = token.Value<DateTime>("timestamp");
+            var editedTimeStamp = token.Value<DateTime?>("edited_timestamp");
+            var content = token.Value<string>("content");
+            var type = (MessageType) token.Value<int>("type");
+
+            // Workarounds for non-default types
+            if (type == MessageType.RecipientAdd)
+                content = "Added a recipient.";
+            else if (type == MessageType.RecipientRemove)
+                content = "Removed a recipient.";
+            else if (type == MessageType.Call)
+                content = "Started a call.";
+            else if (type == MessageType.ChannelNameChange)
+                content = "Changed the channel name.";
+            else if (type == MessageType.ChannelIconChange)
+                content = "Changed the channel icon.";
+            else if (type == MessageType.ChannelPinnedMessage)
+                content = "Pinned a message.";
+            else if (type == MessageType.GuildMemberJoin)
+                content = "Joined the server.";
+
+            // Get author
+            var author = ParseUser(token["author"]);
+
+            // Get attachment
+            var attachments = new List<Attachment>();
+            foreach (var attachmentJson in token["attachments"].EmptyIfNull())
+            {
+                var attachmentId = attachmentJson.Value<string>("id");
+                var attachmentUrl = attachmentJson.Value<string>("url");
+                var attachmentType = attachmentJson["width"] != null
+                    ? AttachmentType.Image
+                    : AttachmentType.Other;
+                var attachmentFileName = attachmentJson.Value<string>("filename");
+                var attachmentFileSize = attachmentJson.Value<long>("size");
+
+                var attachment = new Attachment(
+                    attachmentId, attachmentType, attachmentUrl,
+                    attachmentFileName, attachmentFileSize);
+                attachments.Add(attachment);
+            }
+
+            // Get user mentions
+            var mentionedUsers = token["mentions"].Select(ParseUser).ToArray();
+
+            // Get role mentions
+            var mentionedRoles = token["mention_roles"]
+                .Values<string>()
+                .Select(i => roles.GetOrDefault(i) ?? new Role(i, "deleted-role"))
+                .ToArray();
+
+            // Get channel mentions
+            var mentionedChanenls = Regex.Matches(content, "<#(\\d+)>")
+                .Cast<Match>()
+                .Select(m => m.Groups[1].Value)
+                .ExceptBlank()
+                .Select(i => channels.GetOrDefault(i) ?? new Channel(i, "deleted-channel", ChannelType.GuildTextChat))
+                .ToArray();
+
+            return new Message(id, author, timeStamp, editedTimeStamp, content, attachments,
+                mentionedUsers, mentionedRoles, mentionedChanenls);
+        }
+    }
+}

DiscordChatExporter/Services/DiscordApiService.cs

@@ -1,99 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Net.Http;
-using System.Threading.Tasks;
-using DiscordChatExporter.Models;
-using Newtonsoft.Json.Linq;
-using Tyrrrz.Extensions;
-
-namespace DiscordChatExporter.Services
-{
-    public class DiscordApiService
-    {
-        private const string ApiRoot = "https://discordapp.com/api";
-        private readonly HttpClient _httpClient = new HttpClient();
-
-        private IEnumerable<Message> ParseMessages(string json)
-        {
-            var messagesJson = JArray.Parse(json);
-            foreach (var messageJson in messagesJson)
-            {
-                // Get basic data
-                string id = messageJson.Value<string>("id");
-                var timeStamp = messageJson.Value<DateTime>("timestamp");
-                var editedTimeStamp = messageJson.Value<DateTime?>("edited_timestamp");
-                string content = messageJson.Value<string>("content");
-
-                // Lazy workaround for calls
-                if (messageJson["call"] != null)
-                    content = "Started a call.";
-
-                // Get author
-                var authorJson = messageJson["author"];
-                string authorId = authorJson.Value<string>("id");
-                string authorName = authorJson.Value<string>("username");
-                string authorAvatarHash = authorJson.Value<string>("avatar");
-
-                // Get attachment
-                var attachmentsJson = messageJson["attachments"];
-                var attachments = new List<Attachment>();
-                foreach (var attachmentJson in attachmentsJson)
-                {
-                    string attachmentId = attachmentJson.Value<string>("id");
-                    string attachmentUrl = attachmentJson.Value<string>("url");
-                    string attachmentFileName = attachmentJson.Value<string>("filename");
-                    bool attachmentIsImage = attachmentJson["width"] != null;
-
-                    var attachment = new Attachment(attachmentId, attachmentUrl, attachmentFileName, attachmentIsImage);
-                    attachments.Add(attachment);
-                }
-
-                var author = new User(authorId, authorName, authorAvatarHash);
-                var message = new Message(id, timeStamp, editedTimeStamp, author, content, attachments);
-
-                yield return message;
-            }
-        }
-
-        public async Task<IEnumerable<Message>> GetMessagesAsync(string token, string channelId)
-        {
-            var result = new List<Message>();
-
-            // We are going backwards from last message to first
-            // ...collecting everything between them in batches
-            string beforeId = null;
-            while (true)
-            {
-                // Form request url
-                string url = $"{ApiRoot}/channels/{channelId}/messages?token={token}&limit=100";
-                if (beforeId.IsNotBlank())
-                    url += $"&before={beforeId}";
-
-                // Get response
-                string response = await _httpClient.GetStringAsync(url);
-
-                // Parse
-                var messages = ParseMessages(response);
-
-                // Add messages to list
-                string currentMessageId = null;
-                foreach (var message in messages)
-                {
-                    result.Add(message);
-                    currentMessageId = message.Id;
-                }
-
-                // If no messages - break
-                if (currentMessageId == null) break;
-
-                // Otherwise offset the next request
-                beforeId = currentMessageId;
-            }
-
-            // Messages appear newest first, we need to reverse
-            result.Reverse();
-
-            return result;
-        }
-    }
-}

DiscordChatExporter/Services/ExportService.cs

@@ -1,185 +1,317 @@
-using System.Collections.Generic;
+using System;
-using System.Linq;
+using System.IO;
-using System.Reflection;
+using System.Net;
+using System.Text;
 using System.Text.RegularExpressions;
+using System.Threading.Tasks;
 using DiscordChatExporter.Models;
-using HtmlAgilityPack;
 using Tyrrrz.Extensions;
 
 namespace DiscordChatExporter.Services
 {
-    public class ExportService
+    public partial class ExportService : IExportService
     {
-        private HtmlDocument GetTemplate()
+        private readonly ISettingsService _settingsService;
+
+        public ExportService(ISettingsService settingsService)
         {
-            const string templateName = "DiscordChatExporter.Services.ExportTemplate.html";
+            _settingsService = settingsService;
-            var assembly = Assembly.GetExecutingAssembly();
-            using (var stream = assembly.GetManifestResourceStream(templateName))
-            {
-                var doc = new HtmlDocument();
-                doc.Load(stream);
-                return doc;
-            }
         }
 
-        private IEnumerable<MessageGroup> GroupMessages(IEnumerable<Message> messages)
+        private async Task ExportAsTextAsync(string filePath, ChannelChatLog log)
         {
-            var result = new List<MessageGroup>();
+            using (var writer = new StreamWriter(filePath, false, Encoding.UTF8, 128 * 1024))
-
-            // Group adjacent messages by timestamp and author
-            var groupBuffer = new List<Message>();
-            foreach (var message in messages)
             {
-                var groupFirst = groupBuffer.FirstOrDefault();
+                // Generation info
+                await writer.WriteLineAsync("https://github.com/Tyrrrz/DiscordChatExporter");
+                await writer.WriteLineAsync();
 
-                // Group break condition
+                // Guild and channel info
-                bool breakCondition =
+                await writer.WriteLineAsync('='.Repeat(48));
-                    groupFirst != null &&
+                await writer.WriteLineAsync($"Guild: {log.Guild}");
-                    (
+                await writer.WriteLineAsync($"Channel: {log.Channel}");
-                        message.Author.Id != groupFirst.Author.Id ||
+                await writer.WriteLineAsync($"Messages: {log.TotalMessageCount:N0}");
-                        (message.TimeStamp - groupFirst.TimeStamp).TotalHours > 1 ||
+                await writer.WriteLineAsync('='.Repeat(48));
-                        message.TimeStamp.Hour != groupFirst.TimeStamp.Hour
+                await writer.WriteLineAsync();
-                    );
 
-                // If condition is true - flush buffer
+                // Chat log
-                if (breakCondition)
+                foreach (var group in log.MessageGroups)
                 {
-                    var group = new MessageGroup(groupFirst.Author, groupFirst.TimeStamp, groupBuffer);
+                    var timeStampFormatted = group.TimeStamp.ToString(_settingsService.DateFormat);
-                    result.Add(group);
+                    await writer.WriteLineAsync($"{group.Author}  [{timeStampFormatted}]");
-                    groupBuffer.Clear();
+
+                    // Messages
+                    foreach (var message in group.Messages)
+                    {
+                        // Content
+                        if (message.Content.IsNotBlank())
+                        {
+                            var contentFormatted = FormatMessageContentText(message);
+                            await writer.WriteLineAsync(contentFormatted);
+                        }
+
+                        // Attachments
+                        foreach (var attachment in message.Attachments)
+                        {
+                            await writer.WriteLineAsync(attachment.Url);
+                        }
+                    }
+
+                    await writer.WriteLineAsync();
                 }
-
-                // Add message to buffer
-                groupBuffer.Add(message);
             }
-
-            // Add what's remaining in buffer
-            if (groupBuffer.Any())
-            {
-                var groupFirst = groupBuffer.First();
-                var group = new MessageGroup(groupFirst.Author, groupFirst.TimeStamp, groupBuffer);
-                result.Add(group);
-            }
-
-            return result;
         }
 
-        private string FormatMessageContent(string content)
+        private async Task ExportAsHtmlAsync(string filePath, ChannelChatLog log, string css)
         {
-            // Encode HTML
+            using (var writer = new StreamWriter(filePath, false, Encoding.UTF8, 128 * 1024))
-            content = HtmlDocument.HtmlEncode(content);
+            {
+                // Generation info
+                await writer.WriteLineAsync("<!-- https://github.com/Tyrrrz/DiscordChatExporter -->");
 
-            // Links from URLs
+                // Html start
-            content = Regex.Replace(content, "((https?|ftp)://[^\\s/$.?#].[^\\s]*)",
+                await writer.WriteLineAsync("<!DOCTYPE html>");
-                "<a href=\"$1\">$1</a>");
+                await writer.WriteLineAsync("<html lang=\"en\">");
 
-            // Preformatted multiline
+                // HEAD
-            content = Regex.Replace(content, "```([^`]*?)```",
+                await writer.WriteLineAsync("<head>");
-                m => "<div class=\"pre\">" + m.Groups[1].Value + "</div>");
+                await writer.WriteLineAsync($"<title>{log.Guild} - {log.Channel}</title>");
+                await writer.WriteLineAsync("<meta charset=\"utf-8\" />");
+                await writer.WriteLineAsync("<meta name=\"viewport\" content=\"width=device-width\" />");
+                await writer.WriteLineAsync($"<style>{css}</style>");
+                await writer.WriteLineAsync("</head>");
 
-            // Preformatted inline
+                // Body start
-            content = Regex.Replace(content, "`([^`]*?)`",
+                await writer.WriteLineAsync("<body>");
-                m => "<span class=\"pre\">" + m.Groups[1].Value + "</span>");
 
-            // Bold
+                // Guild and channel info
-            content = Regex.Replace(content, "\\*\\*([^\\*]*?)\\*\\*", "<b>$1</b>");
+                await writer.WriteLineAsync("<div id=\"info\">");
+                await writer.WriteLineAsync("<div class=\"info-left\">");
+                await writer.WriteLineAsync($"<img class=\"guild-icon\" src=\"{log.Guild.IconUrl}\" />");
+                await writer.WriteLineAsync("</div>"); // info-left
+                await writer.WriteLineAsync("<div class=\"info-right\">");
+                await writer.WriteLineAsync($"<div class=\"guild-name\">{log.Guild}</div>");
+                await writer.WriteLineAsync($"<div class=\"channel-name\">{log.Channel}</div>");
+                await writer.WriteLineAsync($"<div class=\"misc\">{log.TotalMessageCount:N0} messages</div>");
+                await writer.WriteLineAsync("</div>"); // info-right
+                await writer.WriteLineAsync("</div>"); // info
 
-            // Italic
+                // Chat log
-            content = Regex.Replace(content, "\\*([^\\*]*?)\\*", "<i>$1</i>");
+                await writer.WriteLineAsync("<div id=\"log\">");
+                foreach (var group in log.MessageGroups)
+                {
+                    await writer.WriteLineAsync("<div class=\"msg\">");
+                    await writer.WriteLineAsync("<div class=\"msg-left\">");
+                    await writer.WriteLineAsync($"<img class=\"msg-avatar\" src=\"{group.Author.AvatarUrl}\" />");
+                    await writer.WriteLineAsync("</div>");
 
-            // Underline
+                    await writer.WriteLineAsync("<div class=\"msg-right\">");
-            content = Regex.Replace(content, "__([^_]*?)__", "<u>$1</u>");
+                    await writer.WriteAsync($"<span class=\"msg-user\" title=\"{HtmlEncode(group.Author)}\">");
+                    await writer.WriteAsync(HtmlEncode(group.Author.Name));
+                    await writer.WriteLineAsync("</span>");
+                    var timeStampFormatted = HtmlEncode(group.TimeStamp.ToString(_settingsService.DateFormat));
+                    await writer.WriteLineAsync($"<span class=\"msg-date\">{timeStampFormatted}</span>");
 
-            // Strike through
+                    // Messages
-            content = Regex.Replace(content, "~~([^~]*?)~~", "<s>$1</s>");
+                    foreach (var message in group.Messages)
+                    {
+                        // Content
+                        if (message.Content.IsNotBlank())
+                        {
+                            await writer.WriteLineAsync("<div class=\"msg-content\">");
+                            var contentFormatted = FormatMessageContentHtml(message);
+                            await writer.WriteAsync(contentFormatted);
+
+                            // Edited timestamp
+                            if (message.EditedTimeStamp != null)
+                            {
+                                var editedTimeStampFormatted =
+                                    HtmlEncode(message.EditedTimeStamp.Value.ToString(_settingsService.DateFormat));
+                                await writer.WriteAsync(
+                                    $"<span class=\"msg-edited\" title=\"{editedTimeStampFormatted}\">(edited)</span>");
+                            }
+
+                            await writer.WriteLineAsync("</div>"); // msg-content
+                        }
+
+                        // Attachments
+                        foreach (var attachment in message.Attachments)
+                        {
+                            if (attachment.Type == AttachmentType.Image)
+                            {
+                                await writer.WriteLineAsync("<div class=\"msg-attachment\">");
+                                await writer.WriteLineAsync($"<a href=\"{attachment.Url}\">");
+                                await writer.WriteLineAsync(
+                                    $"<img class=\"msg-attachment\" src=\"{attachment.Url}\" />");
+                                await writer.WriteLineAsync("</a>");
+                                await writer.WriteLineAsync("</div>");
+                            }
+                            else
+                            {
+                                await writer.WriteLineAsync("<div class=\"msg-attachment\">");
+                                await writer.WriteLineAsync($"<a href=\"{attachment.Url}\">");
+                                var fileSizeFormatted = FormatFileSize(attachment.FileSize);
+                                await writer.WriteLineAsync($"Attachment: {attachment.FileName} ({fileSizeFormatted})");
+                                await writer.WriteLineAsync("</a>");
+                                await writer.WriteLineAsync("</div>");
+                            }
+                        }
+                    }
+                    await writer.WriteLineAsync("</div>"); // msg-right
+                    await writer.WriteLineAsync("</div>"); // msg
+                }
+                await writer.WriteLineAsync("</div>"); // log
+
+                await writer.WriteLineAsync("</body>");
+                await writer.WriteLineAsync("</html>");
+            }
+        }
+
+        public Task ExportAsync(ExportFormat format, string filePath, ChannelChatLog log)
+        {
+            if (format == ExportFormat.PlainText)
+            {
+                return ExportAsTextAsync(filePath, log);
+            }
+            if (format == ExportFormat.HtmlDark)
+            {
+                var css = Program.GetResourceString("DiscordChatExporter.Resources.ExportService.DarkTheme.css");
+                return ExportAsHtmlAsync(filePath, log, css);
+            }
+            if (format == ExportFormat.HtmlLight)
+            {
+                var css = Program.GetResourceString("DiscordChatExporter.Resources.ExportService.LightTheme.css");
+                return ExportAsHtmlAsync(filePath, log, css);
+            }
+
+            throw new NotImplementedException();
+        }
+    }
+
+    public partial class ExportService
+    {
+        private static string HtmlEncode(string str)
+        {
+            return WebUtility.HtmlEncode(str);
+        }
+
+        private static string HtmlEncode(object obj)
+        {
+            return WebUtility.HtmlEncode(obj.ToString());
+        }
+
+        private static string FormatFileSize(long fileSize)
+        {
+            string[] units = {"B", "KB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB"};
+            double size = fileSize;
+            var unit = 0;
+
+            while (size >= 1024)
+            {
+                size /= 1024;
+                ++unit;
+            }
+
+            return $"{size:0.#} {units[unit]}";
+        }
+
+        public static string FormatMessageContentText(Message message)
+        {
+            var content = message.Content;
 
             // New lines
-            content = content.Replace("\n", "</br>");
+            content = content.Replace("\n", Environment.NewLine);
+
+            // User mentions (<@id>)
+            foreach (var mentionedUser in message.MentionedUsers)
+                content = Regex.Replace(content, $"<@!?{mentionedUser.Id}>", $"@{mentionedUser}");
+
+            // Role mentions (<@&id>)
+            foreach (var mentionedRole in message.MentionedRoles)
+                content = content.Replace($"<@&{mentionedRole.Id}>", $"@{mentionedRole.Name}");
+
+            // Channel mentions (<#id>)
+            foreach (var mentionedChannel in message.MentionedChannels)
+                content = content.Replace($"<#{mentionedChannel.Id}>", $"#{mentionedChannel.Name}");
+
+            // Custom emojis (<:name:id>)
+            content = Regex.Replace(content, "<(:.*?:)\\d*>", "$1");
 
             return content;
         }
 
-        public void Export(string filePath, ChatLog chatLog)
+        private static string FormatMessageContentHtml(Message message)
         {
-            var doc = GetTemplate();
+            var content = message.Content;
 
-            // Info
+            // Encode HTML
-            var infoHtml = doc.GetElementbyId("info");
+            content = HtmlEncode(content);
-            infoHtml.AppendChild(HtmlNode.CreateNode($"<div>Channel ID: <b>{chatLog.ChannelId}</b></div>"));
-            string participants = HtmlDocument.HtmlEncode(chatLog.Participants.Select(u => u.Name).JoinToString(", "));
-            infoHtml.AppendChild(HtmlNode.CreateNode($"<div>Participants: <b>{participants}</b></div>"));
-            infoHtml.AppendChild(HtmlNode.CreateNode($"<div>Messages: <b>{chatLog.Messages.Count:N0}</b></div>"));
 
-            // Log
+            // Pre multiline (```text```)
-            var logHtml = doc.GetElementbyId("log");
+            content = Regex.Replace(content, "```+(?:[^`]*?\\n)?([^`]+)\\n?```+", "<div class=\"pre\">$1</div>");
-            var messageGroups = GroupMessages(chatLog.Messages);
+
-            foreach (var messageGroup in messageGroups)
+            // Pre inline (`text`)
+            content = Regex.Replace(content, "`([^`]+)`", "<span class=\"pre\">$1</span>");
+
+            // Bold (**text**)
+            content = Regex.Replace(content, "\\*\\*([^\\*]*?)\\*\\*", "<b>$1</b>");
+
+            // Italic (*text*)
+            content = Regex.Replace(content, "\\*([^\\*]*?)\\*", "<i>$1</i>");
+
+            // Underline (__text__)
+            content = Regex.Replace(content, "__([^_]*?)__", "<u>$1</u>");
+
+            // Italic (_text_)
+            content = Regex.Replace(content, "_([^_]*?)_", "<i>$1</i>");
+
+            // Strike through (~~text~~)
+            content = Regex.Replace(content, "~~([^~]*?)~~", "<s>$1</s>");
+
+            // New lines
+            content = content.Replace("\n", "<br />");
+
+            // URL links
+            content = Regex.Replace(content, "((https?|ftp)://[^\\s/$.?#].[^\\s<>]*)", "<a href=\"$1\">$1</a>");
+
+            // Meta mentions (@everyone)
+            content = content.Replace("@everyone", "<span class=\"mention\">@everyone</span>");
+
+            // Meta mentions (@here)
+            content = content.Replace("@here", "<span class=\"mention\">@here</span>");
+
+            // User mentions (<@id>)
+            foreach (var mentionedUser in message.MentionedUsers)
             {
-                // Container
+                content = Regex.Replace(content, $"&lt;@!?{mentionedUser.Id}&gt;",
-                var messageHtml = logHtml.AppendChild(HtmlNode.CreateNode("<div class=\"msg\"></div>"));
+                    $"<span class=\"mention\" title=\"{HtmlEncode(mentionedUser)}\">" +
-
+                    $"@{HtmlEncode(mentionedUser.Name)}" +
-                // Avatar
+                    "</span>");
-                messageHtml.AppendChild(HtmlNode.CreateNode("<div class=\"msg-avatar\">" +
-                                                            $"<img class=\"msg-avatar\" src=\"{messageGroup.Author.AvatarUrl}\" />" +
-                                                            "</div>"));
-
-                // Body
-                var messageBodyHtml = messageHtml.AppendChild(HtmlNode.CreateNode("<div class=\"msg-body\"></div>"));
-
-                // Author
-                string authorName = HtmlDocument.HtmlEncode(messageGroup.Author.Name);
-                messageBodyHtml.AppendChild(HtmlNode.CreateNode($"<span class=\"msg-user\">{authorName}</span>"));
-
-                // Date
-                string timeStamp = HtmlDocument.HtmlEncode(messageGroup.FirstTimeStamp.ToString("g"));
-                messageBodyHtml.AppendChild(HtmlNode.CreateNode($"<span class=\"msg-date\">{timeStamp}</span>"));
-
-                // Individual messages
-                foreach (var message in messageGroup.Messages)
-                {
-                    // Content
-                    if (message.Content.IsNotBlank())
-                    {
-                        string content = FormatMessageContent(message.Content);
-                        var contentHtml =
-                            messageBodyHtml.AppendChild(
-                                HtmlNode.CreateNode($"<div class=\"msg-content\">{content}</div>"));
-
-                        // Edited timestamp
-                        if (message.EditedTimeStamp != null)
-                        {
-                            contentHtml.AppendChild(
-                                HtmlNode.CreateNode(
-                                    $"<span class=\"msg-edited\" title=\"{message.EditedTimeStamp:g}\">(edited)</span>"));
-                        }
-                    }
-
-                    // Attachments
-                    foreach (var attachment in message.Attachments)
-                    {
-                        if (attachment.IsImage)
-                        {
-                            messageBodyHtml.AppendChild(
-                                HtmlNode.CreateNode("<div class=\"msg-attachment\">" +
-                                                    $"<a href=\"{attachment.Url}\">" +
-                                                    $"<img class=\"msg-attachment\" src=\"{attachment.Url}\" />" +
-                                                    "</a>" +
-                                                    "</div>"));
-                        }
-                        else
-                        {
-                            messageBodyHtml.AppendChild(
-                                HtmlNode.CreateNode("<div class=\"msg-attachment\">" +
-                                                    $"<a href=\"{attachment.Url}\">" +
-                                                    $"Attachment: {attachment.FileName}" +
-                                                    "</a>" +
-                                                    "</div>"));
-                        }
-                    }
-                }
             }
 
-            doc.Save(filePath);
+            // Role mentions (<@&id>)
+            foreach (var mentionedRole in message.MentionedRoles)
+            {
+                content = content.Replace($"&lt;@&amp;{mentionedRole.Id}&gt;",
+                    "<span class=\"mention\">" +
+                    $"@{HtmlEncode(mentionedRole.Name)}" +
+                    "</span>");
+            }
+
+            // Channel mentions (<#id>)
+            foreach (var mentionedChannel in message.MentionedChannels)
+            {
+                content = content.Replace($"&lt;#{mentionedChannel.Id}&gt;",
+                    "<span class=\"mention\">" +
+                    $"#{HtmlEncode(mentionedChannel.Name)}" +
+                    "</span>");
+            }
+
+            // Custom emojis (<:name:id>)
+            content = Regex.Replace(content, "&lt;(:.*?:)(\\d*)&gt;",
+                "<img class=\"emoji\" title=\"$1\" src=\"https://cdn.discordapp.com/emojis/$2.png\" />");
+
+            return content;
         }
     }
 }

DiscordChatExporter/Services/ExportTemplate.html

@@ -1,122 +0,0 @@
-<!DOCTYPE html>
-<html lang="en">
-<head>
-    <title>Discord Chat Log</title>
-    <meta charset="utf-8"/>
-    <meta name="viewport" content="width=device-width, initial-scale=1.0">
-
-    <style>
-        body {
-            font-family: Whitney, Helvetica Neue, Helvetica, Arial, sans-serif;
-            font-size: 15px;
-
-            background-color: #fff;
-        }
-
-        a {
-            text-decoration: none;
-
-            color: #37bcf7;
-        }
-
-        a:hover {
-            text-decoration: underline;
-        }
-
-        div.pre, span.pre {
-            font-family: Consolas, Courier New, Courier, Monospace;
-
-            padding-right: 2px;
-            padding-left: 2px;
-
-            background-color: #f9f9f9;
-        }
-
-        div#info {
-            max-width: 100%;
-            margin-bottom: 20px;
-
-            color: #939799;
-        }
-
-        div#log {
-            max-width: 100%;
-        }
-
-        div.msg {
-            display: flex;
-
-            margin-right: 10px;
-            margin-left: 10px;
-            padding-top: 15px;
-            padding-bottom: 15px;
-
-            border-top: 1px solid #eceeef;
-        }
-
-        div.msg-avatar {
-            width: 40px;
-            height: 40px;
-        }
-
-        img.msg-avatar {
-            width: 40px;
-            height: 40px;
-
-            border-radius: 50%;
-        }
-
-        div.msg-body {
-            margin-left: 15px;
-
-            flex: 1;
-        }
-
-        span.msg-user {
-            font-size: 1.15em;
-
-            color: #2f3136;
-        }
-
-        span.msg-date {
-            font-size: .8em;
-            font-weight: 200;
-
-            margin-left: 5px;
-
-            color: #b7bcbf;
-        }
-
-        span.msg-edited {
-            font-size: .8em;
-            font-weight: 200;
-
-            margin-left: 5px;
-
-            color: #b7bcbf;
-        }
-
-        div.msg-content {
-            padding-top: 5px;
-
-            color: #939799;
-        }
-
-        div.msg-attachment {
-            margin-top: 5px;
-            margin-bottom: 5px;
-        }
-
-        img.msg-attachment {
-            max-width: 50%;
-            max-height: 500px;
-        }
-
-    </style>
-</head>
-
-<body>
-    <div id="info"></div>
-    <div id="log"></div>
-</body>
-</html>

DiscordChatExporter/Services/IDataService.cs

@@ -0,0 +1,19 @@
+using System;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using DiscordChatExporter.Models;
+
+namespace DiscordChatExporter.Services
+{
+    public interface IDataService
+    {
+        Task<IReadOnlyList<Guild>> GetGuildsAsync(string token);
+
+        Task<IReadOnlyList<Channel>> GetDirectMessageChannelsAsync(string token);
+
+        Task<IReadOnlyList<Channel>> GetGuildChannelsAsync(string token, string guildId);
+
+        Task<IReadOnlyList<Message>> GetChannelMessagesAsync(string token, string channelId,
+            DateTime? from, DateTime? to);
+    }
+}

DiscordChatExporter/Services/IExportService.cs

@@ -0,0 +1,10 @@
+using System.Threading.Tasks;
+using DiscordChatExporter.Models;
+
+namespace DiscordChatExporter.Services
+{
+    public interface IExportService
+    {
+        Task ExportAsync(ExportFormat format, string filePath, ChannelChatLog log);
+    }
+}

DiscordChatExporter/Services/IMessageGroupService.cs

@@ -0,0 +1,10 @@
+using System.Collections.Generic;
+using DiscordChatExporter.Models;
+
+namespace DiscordChatExporter.Services
+{
+    public interface IMessageGroupService
+    {
+        IReadOnlyList<MessageGroup> GroupMessages(IReadOnlyList<Message> messages);
+    }
+}

DiscordChatExporter/Services/ISettingsService.cs

@@ -0,0 +1,16 @@
+using DiscordChatExporter.Models;
+
+namespace DiscordChatExporter.Services
+{
+    public interface ISettingsService
+    {
+        string DateFormat { get; set; }
+        int MessageGroupLimit { get; set; }
+
+        string LastToken { get; set; }
+        ExportFormat LastExportFormat { get; set; }
+
+        void Load();
+        void Save();
+    }
+}

DiscordChatExporter/Services/MessageGroupService.cs

@@ -0,0 +1,59 @@
+using System.Collections.Generic;
+using System.Linq;
+using DiscordChatExporter.Models;
+
+namespace DiscordChatExporter.Services
+{
+    public class MessageGroupService : IMessageGroupService
+    {
+        private readonly ISettingsService _settingsService;
+
+        public MessageGroupService(ISettingsService settingsService)
+        {
+            _settingsService = settingsService;
+        }
+
+        public IReadOnlyList<MessageGroup> GroupMessages(IReadOnlyList<Message> messages)
+        {
+            var result = new List<MessageGroup>();
+
+            // Group adjacent messages by timestamp and author
+            var groupBuffer = new List<Message>();
+            foreach (var message in messages)
+            {
+                var groupFirst = groupBuffer.FirstOrDefault();
+
+                // Group break condition
+                var breakCondition =
+                    groupFirst != null &&
+                    (
+                        message.Author.Id != groupFirst.Author.Id ||
+                        (message.TimeStamp - groupFirst.TimeStamp).TotalHours > 1 ||
+                        message.TimeStamp.Hour != groupFirst.TimeStamp.Hour ||
+                        groupBuffer.Count >= _settingsService.MessageGroupLimit
+                    );
+
+                // If condition is true - flush buffer
+                if (breakCondition)
+                {
+                    var group = new MessageGroup(groupFirst.Author, groupFirst.TimeStamp, groupBuffer.ToArray());
+                    result.Add(group);
+                    groupBuffer.Clear();
+                }
+
+                // Add message to buffer
+                groupBuffer.Add(message);
+            }
+
+            // Add what's remaining in buffer
+            if (groupBuffer.Any())
+            {
+                var groupFirst = groupBuffer.First();
+                var group = new MessageGroup(groupFirst.Author, groupFirst.TimeStamp, groupBuffer.ToArray());
+                result.Add(group);
+            }
+
+            return result;
+        }
+    }
+}

DiscordChatExporter/Services/SettingsService.cs

@@ -0,0 +1,21 @@
+using DiscordChatExporter.Models;
+using Tyrrrz.Settings;
+
+namespace DiscordChatExporter.Services
+{
+    public class SettingsService : SettingsManager, ISettingsService
+    {
+        public string DateFormat { get; set; } = "dd-MMM-yy hh:mm tt";
+        public int MessageGroupLimit { get; set; } = 20;
+
+        public string LastToken { get; set; }
+        public ExportFormat LastExportFormat { get; set; } = ExportFormat.HtmlDark;
+
+        public SettingsService()
+        {
+            Configuration.StorageSpace = StorageSpace.Instance;
+            Configuration.SubDirectoryPath = "";
+            Configuration.FileName = "Settings.dat";
+        }
+    }
+}

DiscordChatExporter/ViewModels/ErrorViewModel.cs

@@ -0,0 +1,19 @@
+using DiscordChatExporter.Messages;
+using GalaSoft.MvvmLight;
+
+namespace DiscordChatExporter.ViewModels
+{
+    public class ErrorViewModel : ViewModelBase, IErrorViewModel
+    {
+        public string Message { get; private set; }
+
+        public ErrorViewModel()
+        {
+            // Messages
+            MessengerInstance.Register<ShowErrorMessage>(this, m =>
+            {
+                Message = m.Message;
+            });
+        }
+    }
+}

DiscordChatExporter/ViewModels/ExportDoneViewModel.cs

@@ -0,0 +1,32 @@
+using System.Diagnostics;
+using DiscordChatExporter.Messages;
+using GalaSoft.MvvmLight;
+using GalaSoft.MvvmLight.CommandWpf;
+
+namespace DiscordChatExporter.ViewModels
+{
+    public class ExportDoneViewModel : ViewModelBase, IExportDoneViewModel
+    {
+        private string _filePath;
+
+        // Commands
+        public RelayCommand OpenCommand { get; }
+
+        public ExportDoneViewModel()
+        {
+            // Commands
+            OpenCommand = new RelayCommand(Open);
+
+            // Messages
+            MessengerInstance.Register<ShowExportDoneMessage>(this, m =>
+            {
+                _filePath = m.FilePath;
+            });
+        }
+
+        private void Open()
+        {
+            Process.Start(_filePath);
+        }
+    }
+}

DiscordChatExporter/ViewModels/ExportSetupViewModel.cs

@@ -0,0 +1,100 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using DiscordChatExporter.Messages;
+using DiscordChatExporter.Models;
+using DiscordChatExporter.Services;
+using GalaSoft.MvvmLight;
+using GalaSoft.MvvmLight.CommandWpf;
+using Tyrrrz.Extensions;
+
+namespace DiscordChatExporter.ViewModels
+{
+    public class ExportSetupViewModel : ViewModelBase, IExportSetupViewModel
+    {
+        private readonly ISettingsService _settingsService;
+
+        private string _filePath;
+        private ExportFormat _format;
+        private DateTime? _from;
+        private DateTime? _to;
+
+        public Guild Guild { get; private set; }
+
+        public Channel Channel { get; private set; }
+
+        public string FilePath
+        {
+            get => _filePath;
+            set
+            {
+                Set(ref _filePath, value);
+                ExportCommand.RaiseCanExecuteChanged();
+            }
+        }
+
+        public IReadOnlyList<ExportFormat> AvailableFormats { get; }
+
+        public ExportFormat SelectedFormat
+        {
+            get => _format;
+            set
+            {
+                Set(ref _format, value);
+
+                // Replace extension in path
+                var newExt = value.GetFileExtension();
+                if (FilePath != null && !FilePath.EndsWith(newExt))
+                    FilePath = FilePath.SubstringUntilLast(".") + "." + newExt;
+            }
+        }
+
+        public DateTime? From
+        {
+            get => _from;
+            set => Set(ref _from, value);
+        }
+
+        public DateTime? To
+        {
+            get => _to;
+            set => Set(ref _to, value);
+        }
+
+        // Commands
+        public RelayCommand ExportCommand { get; }
+
+        public ExportSetupViewModel(ISettingsService settingsService)
+        {
+            _settingsService = settingsService;
+
+            // Defaults
+            AvailableFormats = Enum.GetValues(typeof(ExportFormat)).Cast<ExportFormat>().ToArray();
+
+            // Commands
+            ExportCommand = new RelayCommand(Export, () => FilePath.IsNotBlank());
+
+            // Messages
+            MessengerInstance.Register<ShowExportSetupMessage>(this, m =>
+            {
+                Guild = m.Guild;
+                Channel = m.Channel;
+                SelectedFormat = _settingsService.LastExportFormat;
+                FilePath = $"{Guild} - {Channel}.{SelectedFormat.GetFileExtension()}"
+                    .Replace(Path.GetInvalidFileNameChars(), '_');
+                From = null;
+                To = null;
+            });
+        }
+
+        private void Export()
+        {
+            // Save format
+            _settingsService.LastExportFormat = SelectedFormat;
+
+            // Start export
+            MessengerInstance.Send(new StartExportMessage(Channel, FilePath, SelectedFormat, From, To));
+        }
+    }
+}

DiscordChatExporter/ViewModels/IErrorViewModel.cs

@@ -0,0 +1,7 @@
+namespace DiscordChatExporter.ViewModels
+{
+    public interface IErrorViewModel
+    {
+        string Message { get; }
+    }
+}

DiscordChatExporter/ViewModels/IExportDoneViewModel.cs

@@ -0,0 +1,9 @@
+using GalaSoft.MvvmLight.CommandWpf;
+
+namespace DiscordChatExporter.ViewModels
+{
+    public interface IExportDoneViewModel
+    {
+        RelayCommand OpenCommand { get; }
+    }
+}

DiscordChatExporter/ViewModels/IExportSetupViewModel.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Collections.Generic;
+using DiscordChatExporter.Models;
+using GalaSoft.MvvmLight.CommandWpf;
+
+namespace DiscordChatExporter.ViewModels
+{
+    public interface IExportSetupViewModel
+    {
+        Guild Guild { get; }
+        Channel Channel { get; }
+        string FilePath { get; set; }
+        IReadOnlyList<ExportFormat> AvailableFormats { get; }
+        ExportFormat SelectedFormat { get; set; }
+        DateTime? From { get; set; }
+        DateTime? To { get; set; }
+
+        RelayCommand ExportCommand { get; }
+    }
+}

DiscordChatExporter/ViewModels/IMainViewModel.cs

@@ -0,0 +1,23 @@
+using System.Collections.Generic;
+using DiscordChatExporter.Models;
+using GalaSoft.MvvmLight.CommandWpf;
+
+namespace DiscordChatExporter.ViewModels
+{
+    public interface IMainViewModel
+    {
+        bool IsBusy { get; }
+        bool IsDataAvailable { get; }
+
+        string Token { get; set; }
+
+        IReadOnlyList<Guild> AvailableGuilds { get; }
+        Guild SelectedGuild { get; set; }
+        IReadOnlyList<Channel> AvailableChannels { get; }
+
+        RelayCommand PullDataCommand { get; }
+        RelayCommand ShowSettingsCommand { get; }
+        RelayCommand ShowAboutCommand { get; }
+        RelayCommand<Channel> ShowExportSetupCommand { get; }
+    }
+}

DiscordChatExporter/ViewModels/ISettingsViewModel.cs

@@ -0,0 +1,8 @@
+namespace DiscordChatExporter.ViewModels
+{
+    public interface ISettingsViewModel
+    {
+        string DateFormat { get; set; }
+        int MessageGroupLimit { get; set; }
+    }
+}

DiscordChatExporter/ViewModels/MainViewModel.cs

@@ -0,0 +1,211 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using System.Net;
+using DiscordChatExporter.Exceptions;
+using DiscordChatExporter.Messages;
+using DiscordChatExporter.Models;
+using DiscordChatExporter.Services;
+using GalaSoft.MvvmLight;
+using GalaSoft.MvvmLight.CommandWpf;
+using Tyrrrz.Extensions;
+
+namespace DiscordChatExporter.ViewModels
+{
+    public class MainViewModel : ViewModelBase, IMainViewModel
+    {
+        private readonly ISettingsService _settingsService;
+        private readonly IDataService _dataService;
+        private readonly IMessageGroupService _messageGroupService;
+        private readonly IExportService _exportService;
+
+        private readonly Dictionary<Guild, IReadOnlyList<Channel>> _guildChannelsMap;
+
+        private bool _isBusy;
+        private string _token;
+        private IReadOnlyList<Guild> _availableGuilds;
+        private Guild _selectedGuild;
+        private IReadOnlyList<Channel> _availableChannels;
+
+        public bool IsBusy
+        {
+            get => _isBusy;
+            private set
+            {
+                Set(ref _isBusy, value);
+                PullDataCommand.RaiseCanExecuteChanged();
+                ShowExportSetupCommand.RaiseCanExecuteChanged();
+            }
+        }
+
+        public bool IsDataAvailable => AvailableGuilds.NotNullAndAny();
+
+        public string Token
+        {
+            get => _token;
+            set
+            {
+                // Remove invalid chars
+                value = value?.Trim('"');
+
+                Set(ref _token, value);
+                PullDataCommand.RaiseCanExecuteChanged();
+            }
+        }
+
+        public IReadOnlyList<Guild> AvailableGuilds
+        {
+            get => _availableGuilds;
+            private set
+            {
+                Set(ref _availableGuilds, value);
+                RaisePropertyChanged(() => IsDataAvailable);
+            }
+        }
+
+        public Guild SelectedGuild
+        {
+            get => _selectedGuild;
+            set
+            {
+                Set(ref _selectedGuild, value);
+                AvailableChannels = value != null ? _guildChannelsMap[value] : new Channel[0];
+                ShowExportSetupCommand.RaiseCanExecuteChanged();
+            }
+        }
+
+        public IReadOnlyList<Channel> AvailableChannels
+        {
+            get => _availableChannels;
+            private set => Set(ref _availableChannels, value);
+        }
+
+        public RelayCommand PullDataCommand { get; }
+        public RelayCommand ShowSettingsCommand { get; }
+        public RelayCommand ShowAboutCommand { get; }
+        public RelayCommand<Channel> ShowExportSetupCommand { get; }
+
+        public MainViewModel(ISettingsService settingsService, IDataService dataService,
+            IMessageGroupService messageGroupService, IExportService exportService)
+        {
+            _settingsService = settingsService;
+            _dataService = dataService;
+            _messageGroupService = messageGroupService;
+            _exportService = exportService;
+
+            _guildChannelsMap = new Dictionary<Guild, IReadOnlyList<Channel>>();
+
+            // Commands
+            PullDataCommand = new RelayCommand(PullData, () => Token.IsNotBlank() && !IsBusy);
+            ShowSettingsCommand = new RelayCommand(ShowSettings);
+            ShowAboutCommand = new RelayCommand(ShowAbout);
+            ShowExportSetupCommand = new RelayCommand<Channel>(ShowExportSetup, _ => !IsBusy);
+
+            // Messages
+            MessengerInstance.Register<StartExportMessage>(this, m =>
+            {
+                Export(m.Channel, m.FilePath, m.Format, m.From, m.To);
+            });
+
+            // Defaults
+            _token = _settingsService.LastToken;
+        }
+
+        private async void PullData()
+        {
+            IsBusy = true;
+
+            // Copy token so it doesn't get mutated
+            var token = Token;
+
+            // Save token
+            _settingsService.LastToken = token;
+
+            // Clear existing
+            _guildChannelsMap.Clear();
+
+            try
+            {
+                // Get DM channels
+                {
+                    var channels = await _dataService.GetDirectMessageChannelsAsync(token);
+                    var guild = new Guild("@me", "Direct Messages", null);
+                    _guildChannelsMap[guild] = channels.ToArray();
+                }
+
+                // Get guild channels
+                {
+                    var guilds = await _dataService.GetGuildsAsync(token);
+                    foreach (var guild in guilds)
+                    {
+                        var channels = await _dataService.GetGuildChannelsAsync(token, guild.Id);
+                        _guildChannelsMap[guild] = channels.Where(c => c.Type == ChannelType.GuildTextChat).ToArray();
+                    }
+                }
+            }
+            catch (HttpErrorStatusCodeException ex) when (ex.StatusCode == HttpStatusCode.Unauthorized)
+            {
+                const string message = "Unauthorized to perform request. Make sure token is valid.";
+                MessengerInstance.Send(new ShowErrorMessage(message));
+            }
+            catch (HttpErrorStatusCodeException ex) when (ex.StatusCode == HttpStatusCode.Forbidden)
+            {
+                const string message = "Forbidden to perform request. The account may be locked by 2FA.";
+                MessengerInstance.Send(new ShowErrorMessage(message));
+            }
+
+            AvailableGuilds = _guildChannelsMap.Keys.ToArray();
+            SelectedGuild = AvailableGuilds.FirstOrDefault();
+            IsBusy = false;
+        }
+
+        private void ShowSettings()
+        {
+            MessengerInstance.Send(new ShowSettingsMessage());
+        }
+
+        private void ShowAbout()
+        {
+            Process.Start("https://github.com/Tyrrrz/DiscordChatExporter");
+        }
+
+        private void ShowExportSetup(Channel channel)
+        {
+            MessengerInstance.Send(new ShowExportSetupMessage(SelectedGuild, channel));
+        }
+
+        private async void Export(Channel channel, string filePath, ExportFormat format, DateTime? from, DateTime? to)
+        {
+            IsBusy = true;
+
+            // Get last used token
+            var token = _settingsService.LastToken;
+
+            try
+            {
+                // Get messages
+                var messages = await _dataService.GetChannelMessagesAsync(token, channel.Id, from, to);
+
+                // Group them
+                var messageGroups = _messageGroupService.GroupMessages(messages);
+
+                // Create log
+                var log = new ChannelChatLog(SelectedGuild, channel, messageGroups, messages.Count);
+
+                // Export
+                await _exportService.ExportAsync(format, filePath, log);
+
+                // Notify completion
+                MessengerInstance.Send(new ShowExportDoneMessage(filePath));
+            }
+            catch (HttpErrorStatusCodeException ex) when (ex.StatusCode == HttpStatusCode.Forbidden)
+            {
+                const string message = "Forbidden to view messages in that channel.";
+                MessengerInstance.Send(new ShowErrorMessage(message));
+            }
+
+            IsBusy = false;
+        }
+    }
+}

DiscordChatExporter/ViewModels/SettingsViewModel.cs

@@ -0,0 +1,28 @@
+using DiscordChatExporter.Services;
+using GalaSoft.MvvmLight;
+using Tyrrrz.Extensions;
+
+namespace DiscordChatExporter.ViewModels
+{
+    public class SettingsViewModel : ViewModelBase, ISettingsViewModel
+    {
+        private readonly ISettingsService _settingsService;
+
+        public string DateFormat
+        {
+            get => _settingsService.DateFormat;
+            set => _settingsService.DateFormat = value;
+        }
+
+        public int MessageGroupLimit
+        {
+            get => _settingsService.MessageGroupLimit;
+            set => _settingsService.MessageGroupLimit = value.ClampMin(0);
+        }
+
+        public SettingsViewModel(ISettingsService settingsService)
+        {
+            _settingsService = settingsService;
+        }
+    }
+}

DiscordChatExporter/Views/ErrorDialog.ammy

@@ -0,0 +1,25 @@
+using MaterialDesignThemes.Wpf
+
+UserControl "DiscordChatExporter.Views.ErrorDialog" {
+  DataContext: bind ErrorViewModel from $resource Container
+  Width: 250
+
+  StackPanel {
+    // Message
+    TextBlock {
+      Margin: 16
+      FontSize: 16
+      TextWrapping: WrapWithOverflow
+      Text: bind Message
+    }
+
+    // OK
+    Button {
+      Margin: 8
+      Command: DialogHost.CloseDialogCommand
+      Content: "OK"
+      HorizontalAlignment: Right
+      Style: resource dyn "MaterialDesignFlatButton"
+    }
+  }
+}

DiscordChatExporter/Views/ErrorDialog.ammy.cs

@@ -0,0 +1,10 @@
+namespace DiscordChatExporter.Views
+{
+    public partial class ErrorDialog
+    {
+        public ErrorDialog()
+        {
+            InitializeComponent();
+        }
+    }
+}

DiscordChatExporter/Views/ExportDoneDialog.ammy

@@ -0,0 +1,38 @@
+using MaterialDesignThemes.Wpf
+
+UserControl "DiscordChatExporter.Views.ExportDoneDialog" {
+  DataContext: bind ExportDoneViewModel from $resource Container
+  Width: 250
+
+  StackPanel {
+    // Message
+    TextBlock {
+      Margin: 16
+      FontSize: 16
+      TextWrapping: WrapWithOverflow
+      Text: "Finished exporting chat log"
+    }
+
+    // Buttons
+    @StackPanelHorizontal {
+      HorizontalAlignment: Right
+
+      // Open
+      Button "OpenButton" {
+        Margin: 8
+        Click: OpenButton_Click
+        Command: bind OpenCommand
+        Content: "OPEN IT"
+        Style: resource dyn "MaterialDesignFlatButton"
+      }
+
+      // Dismiss
+      Button {
+        Margin: 8
+        Command: DialogHost.CloseDialogCommand
+        Content: "DISMISS"
+        Style: resource dyn "MaterialDesignFlatButton"
+      }
+    }
+  }
+}

DiscordChatExporter/Views/ExportDoneDialog.ammy.cs

@@ -0,0 +1,18 @@
+using System.Windows;
+using MaterialDesignThemes.Wpf;
+
+namespace DiscordChatExporter.Views
+{
+    public partial class ExportDoneDialog
+    {
+        public ExportDoneDialog()
+        {
+            InitializeComponent();
+        }
+
+        public void OpenButton_Click(object sender, RoutedEventArgs args)
+        {
+            DialogHost.CloseDialogCommand.Execute(null, null);
+        }
+    }
+}

DiscordChatExporter/Views/ExportSetupDialog.ammy

@@ -0,0 +1,88 @@
+using DiscordChatExporter.Models
+using MaterialDesignThemes.Wpf
+
+UserControl "DiscordChatExporter.Views.ExportSetupDialog" {
+  DataContext: bind ExportSetupViewModel from $resource Container
+  Width: 325
+
+  StackPanel {
+    // File path
+    TextBox {
+      Margin: [16, 16, 16, 8]
+      HintAssist.Hint: "Output file"
+      HintAssist.IsFloating: true
+      IsReadOnly: true
+      Text: bind FilePath
+            set [ UpdateSourceTrigger: PropertyChanged ]
+    }
+
+    // Format
+    ComboBox {
+      Margin: [16, 8, 16, 8]
+      HintAssist.Hint: "Export format"
+      HintAssist.IsFloating: true
+      IsReadOnly: true
+      ItemsSource: bind AvailableFormats
+      SelectedItem: bind SelectedFormat
+
+      ItemTemplate: DataTemplate {
+        TextBlock {
+          Text: bind
+                convert (ExportFormat f) => Extensions.GetDisplayName(f)
+        }
+      }
+    }
+
+    // Date range
+    Grid {
+      #TwoColumns("*", "*")
+
+      DatePicker {
+        #Cell(0, 0)
+        Margin: [16, 20, 8, 8]
+        HintAssist.Hint: "From (optional)"
+        HintAssist.IsFloating: true
+        SelectedDate: bind From
+      }
+
+      DatePicker {
+        #Cell(0, 1)
+        Margin: [8, 20, 16, 8]
+        HintAssist.Hint: "To (optional)"
+        HintAssist.IsFloating: true
+        SelectedDate: bind To
+      }
+    }
+
+    // Buttons
+    @StackPanelHorizontal {
+      HorizontalAlignment: Right
+
+      // Browse
+      Button "BrowseButton" {
+        Margin: 8
+        Click: BrowseButton_Click
+        Content: "BROWSE"
+        Style: resource dyn "MaterialDesignFlatButton"
+      }
+
+      // Export
+      Button "ExportButton" {
+        Margin: 8
+        Click: ExportButton_Click
+        Command: bind ExportCommand
+        Content: "EXPORT"
+        IsDefault: true
+        Style: resource dyn "MaterialDesignFlatButton"
+      }
+
+      // Cancel
+      Button {
+        Margin: 8
+        Command: DialogHost.CloseDialogCommand
+        Content: "CANCEL"
+        Style: resource dyn "MaterialDesignFlatButton"
+      }
+    }
+  }
+}

DiscordChatExporter/Views/ExportSetupDialog.ammy.cs

@@ -0,0 +1,44 @@
+using System.Windows;
+using DiscordChatExporter.Models;
+using DiscordChatExporter.ViewModels;
+using MaterialDesignThemes.Wpf;
+using Microsoft.Win32;
+
+namespace DiscordChatExporter.Views
+{
+    public partial class ExportSetupDialog
+    {
+        private IExportSetupViewModel ViewModel => (IExportSetupViewModel) DataContext;
+
+        public ExportSetupDialog()
+        {
+            InitializeComponent();
+        }
+
+        public void BrowseButton_Click(object sender, RoutedEventArgs args)
+        {
+            // Get file extension of the selected format
+            var ext = ViewModel.SelectedFormat.GetFileExtension();
+
+            // Open dialog
+            var sfd = new SaveFileDialog
+            {
+                FileName = ViewModel.FilePath,
+                Filter = $"{ext.ToUpperInvariant()} Files|*.{ext}|All Files|*.*",
+                AddExtension = true,
+                Title = "Select output file"
+            };
+
+            // Assign new file path if dialog was successful
+            if (sfd.ShowDialog() == true)
+            {
+                ViewModel.FilePath = sfd.FileName;
+            }
+        }
+
+        public void ExportButton_Click(object sender, RoutedEventArgs args)
+        {
+            DialogHost.CloseDialogCommand.Execute(null, null);
+        }
+    }
+}

DiscordChatExporter/Views/MainWindow.ammy

@@ -0,0 +1,270 @@
+using MaterialDesignThemes.Wpf
+using MaterialDesignThemes.Wpf.Transitions
+
+Window "DiscordChatExporter.Views.MainWindow" {
+  Title: "DiscordChatExporter"
+  Width: 600
+  Height: 550
+  Background: resource dyn "MaterialDesignPaper"
+  DataContext: bind MainViewModel from $resource Container
+  FocusManager.FocusedElement: bind from "TokenTextBox"
+  FontFamily: resource dyn "MaterialDesignFont"
+  SnapsToDevicePixels: true
+  TextElement.FontSize: 13
+  TextElement.FontWeight: Regular
+  TextElement.Foreground: resource dyn "SecondaryTextBrush"
+  TextOptions.TextFormattingMode: Ideal
+  TextOptions.TextRenderingMode: Auto
+  UseLayoutRounding: true
+  WindowStartupLocation: CenterScreen
+
+  DialogHost {
+    DockPanel {
+      IsEnabled: bind IsBusy
+                 convert (bool b) => b ? false : true
+
+      // Toolbar
+      Border {
+        DockPanel.Dock: Top
+        Background: resource dyn "PrimaryHueMidBrush"
+        TextElement.Foreground: resource dyn "SecondaryInverseTextBrush"
+        StackPanel {
+          Grid {
+            #TwoColumns("*", "Auto")
+
+            Card {
+              #Cell(0, 0)
+              Margin: [6, 6, 0, 6]
+
+              Grid {
+                #TwoColumns("*", "Auto")
+
+                // Token
+                TextBox "TokenTextBox" {
+                  #Cell(0, 0)
+                  Margin: 6
+                  BorderThickness: 0
+                  HintAssist.Hint: "Token"
+                  FontSize: 16
+                  Text: bind Token
+                        set [ UpdateSourceTrigger: PropertyChanged ]
+                  TextFieldAssist.DecorationVisibility: Hidden
+                  TextFieldAssist.TextBoxViewMargin: [0, 0, 2, 0]
+                }
+
+                // Submit
+                Button {
+                  #Cell(0, 1)
+                  Margin: [0, 6, 6, 6]
+                  Padding: 4
+                  Command: bind PullDataCommand
+                  IsDefault: true
+                  Style: resource dyn "MaterialDesignFlatButton"
+
+                  PackIcon {
+                    Width: 24
+                    Height: 24
+                    Kind: PackIconKind.ArrowRight
+                  }
+                }
+              }
+            }
+
+            // Popup menu
+            PopupBox {
+              #Cell(0, 1)
+              Foreground: resource dyn "PrimaryHueMidForegroundBrush"
+              PlacementMode: LeftAndAlignTopEdges
+
+              StackPanel {
+                Button {
+                  Command: bind ShowSettingsCommand
+                  Content: "Settings"
+                }
+                Button {
+                  Command: bind ShowAboutCommand
+                  Content: "About"
+                }
+              }
+            }
+          }
+
+          // Progress
+          ProgressBar {
+            Background: Transparent
+            IsIndeterminate: true
+            Visibility: bind IsBusy
+                             convert (bool b) => b ? Visibility.Visible : Visibility.Hidden
+          }
+        }
+      }
+
+      // Content
+      Grid {
+        DockPanel {
+          Background: resource dyn "MaterialDesignCardBackground"
+          Visibility: bind IsDataAvailable
+                      convert (bool b) => b ? Visibility.Visible : Visibility.Hidden
+
+          // Guilds
+          Border {
+            DockPanel.Dock: Left
+            BorderBrush: resource dyn "DividerBrush"
+            BorderThickness: "0 0 1 0"
+
+            ListBox {
+              ItemsSource: bind AvailableGuilds
+              ScrollViewer.VerticalScrollBarVisibility: Hidden
+              SelectedItem: bind SelectedGuild
+              VirtualizingStackPanel.IsVirtualizing: false
+
+              ItemTemplate: DataTemplate {
+                TransitioningContent {
+                  OpeningEffect: TransitionEffect {
+                    Duration: "0:0:0.3"
+                    Kind: SlideInFromLeft
+                  }
+
+                  Border {
+                    Margin: -8
+                    Background: Transparent
+                    Cursor: CursorType.Hand
+
+                    Image {
+                      Margin: [12, 4, 12, 4]
+                      Width: 48
+                      Height: 48
+                      Source: bind IconUrl
+                      ToolTip: bind Name
+                      OpacityMask: RadialGradientBrush {
+                        GradientStops: [
+                          GradientStop { Color: "#FF000000", Offset: 0 }
+                          GradientStop { Color: "#FF000000", Offset: 0.96 }
+                          GradientStop { Color: "#00000000", Offset: 1 }
+                        ]
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          }
+
+          // Channels
+          Border {
+            ListBox {
+              ItemsSource: bind AvailableChannels
+              HorizontalContentAlignment: Stretch
+              VirtualizingStackPanel.IsVirtualizing: false
+
+              ItemTemplate: DataTemplate {
+                TransitioningContent {
+                  OpeningEffect: TransitionEffect {
+                    Duration: "0:0:0.3"
+                    Kind: SlideInFromLeft
+                  }
+
+                  @StackPanelHorizontal {
+                    Margin: -8
+                    Background: Transparent
+                    Cursor: CursorType.Hand
+                    InputBindings: [
+                      MouseBinding {
+                        Command: bind DataContext.ShowExportSetupCommand from $ancestor<ItemsControl>
+                        CommandParameter: bind
+                        MouseAction: LeftClick
+                      }
+                    ]
+
+                    PackIcon {
+                      Margin: [16, 7, 0, 6]
+                      Kind: PackIconKind.Pound
+                      VerticalAlignment: Center
+                    }
+                    TextBlock {
+                      Margin: [3, 8, 8, 8]
+                      FontSize: 14
+                      Text: bind Name
+                      VerticalAlignment: Center
+                    }  
+                  }
+                }
+              }
+            }
+          }
+        }
+
+        // Content placeholder
+        StackPanel {
+          Margin: [32, 32, 8, 8]
+          Visibility: bind IsDataAvailable
+                      convert (bool b) => b ? Visibility.Hidden : Visibility.Visible
+
+          TextBlock {
+            FontSize: 18
+            Text: "DiscordChatExporter needs your authorization token to work."
+          }
+
+          TextBlock {
+            Margin: [0, 8, 0, 0]
+            FontSize: 16
+            Text: "To obtain it, follow these steps:"
+          }
+
+          TextBlock {
+            Margin: [8, 0, 0, 0]
+            FontSize: 14
+
+            Run {
+              Text: "1. Open the Discord app"
+            }
+            LineBreak { }
+            Run {
+              Text: "2. Log in if you haven't"
+            }
+            LineBreak { }
+            Run {
+              Text: "3. Press"
+            }
+            Run {
+              Text: "Ctrl+Shift+I"
+              Foreground: resource dyn "PrimaryTextBrush"
+            }
+            LineBreak { }
+            Run {
+              Text: "4. Navigate to"
+            }
+            Run {
+              Text: "Application"
+              Foreground: resource dyn "PrimaryTextBrush"
+            }
+            Run { Text: "tab" }
+            LineBreak { }
+            Run {
+              Text: "5. Expand"
+            }
+            Run {
+              Text: "Storage > Local Storage > https://discordapp.com"
+              Foreground: resource dyn "PrimaryTextBrush"
+            }
+            LineBreak { }
+            Run {
+              Text: "6. Find"
+            }
+            Run {
+              Text: "&quot;token&quot;"
+              Foreground: resource dyn "PrimaryTextBrush"
+            }
+            Run {
+              Text: "under key and copy the value"
+            }
+            LineBreak { }
+            Run {
+              Text: "7. Paste the value in the textbox above"
+            }
+          }
+        }
+      }
+    }
+  }
+}

DiscordChatExporter/Views/MainWindow.ammy.cs

@@ -0,0 +1,27 @@
+using System.Reflection;
+using DiscordChatExporter.Messages;
+using GalaSoft.MvvmLight.Messaging;
+using MaterialDesignThemes.Wpf;
+using Tyrrrz.Extensions;
+
+namespace DiscordChatExporter.Views
+{
+    public partial class MainWindow
+    {
+        public MainWindow()
+        {
+            InitializeComponent();
+            Title += $" v{Assembly.GetExecutingAssembly().GetName().Version}";
+
+            // Dialogs
+            Messenger.Default.Register<ShowErrorMessage>(this,
+                m => DialogHost.Show(new ErrorDialog()).Forget());
+            Messenger.Default.Register<ShowExportDoneMessage>(this,
+                m => DialogHost.Show(new ExportDoneDialog()).Forget());
+            Messenger.Default.Register<ShowExportSetupMessage>(this,
+                m => DialogHost.Show(new ExportSetupDialog()).Forget());
+            Messenger.Default.Register<ShowSettingsMessage>(this,
+                m => DialogHost.Show(new SettingsDialog()).Forget());
+        }
+    }
+}

DiscordChatExporter/Views/SettingsDialog.ammy

@@ -0,0 +1,33 @@
+using MaterialDesignThemes.Wpf
+
+UserControl "DiscordChatExporter.Views.SettingsDialog" {
+  DataContext: bind SettingsViewModel from $resource Container
+  Width: 250
+
+  StackPanel {
+    // Date format
+    TextBox {
+      Margin: [16, 16, 16, 8]
+      HintAssist.Hint: "Date format"
+      HintAssist.IsFloating: true
+      Text: bind DateFormat
+    }
+
+    // Group limit
+    TextBox {
+      Margin: [16, 8, 16, 8]
+      HintAssist.Hint: "Message group limit"
+      HintAssist.IsFloating: true
+      Text: bind MessageGroupLimit
+    }
+
+    // Save
+    Button {
+      Margin: 8
+      Command: DialogHost.CloseDialogCommand
+      Content: "SAVE"
+      HorizontalAlignment: Right
+      Style: resource dyn "MaterialDesignFlatButton"
+    }
+  }
+}

DiscordChatExporter/Views/SettingsDialog.ammy.cs

@@ -0,0 +1,10 @@
+namespace DiscordChatExporter.Views
+{
+    public partial class SettingsDialog
+    {
+        public SettingsDialog()
+        {
+            InitializeComponent();
+        }
+    }
+}

DiscordChatExporter/lib.ammy

@@ -0,0 +1,238 @@
+mixin TwoColumns (one = "*", two = "*") for Grid {
+  combine ColumnDefinitions: [
+    ColumnDefinition { Width: $one }
+    ColumnDefinition { Width: $two }
+  ]
+}
+
+mixin ThreeColumns (one = none, two = none, three = none) for Grid {
+  #TwoColumns($one, $two)
+  combine ColumnDefinitions: ColumnDefinition { Width: $three }
+}
+
+mixin FourColumns (one = none, two = none, three = none, four = none) for Grid {
+  #ThreeColumns($one, $two, $three)
+  combine ColumnDefinitions: ColumnDefinition { Width: $four }
+}
+
+mixin FiveColumns (one = none, two = none, three = none, four = none, five = none) for Grid {
+  #FourColumns($one, $two, $three, $four)
+  combine ColumnDefinitions: ColumnDefinition { Width: $five }
+}
+
+mixin TwoRows (one = none, two = none) for Grid
+{
+  combine RowDefinitions: [
+    RowDefinition { Height: $one }
+    RowDefinition { Height: $two }
+  ]
+}
+
+mixin ThreeRows (one = none, two = none, three = none) for Grid
+{
+  #TwoRows($one, $two)
+  combine RowDefinitions: RowDefinition { Height: $three }
+}
+
+mixin FourRows (one = none, two = none, three = none, four = none) for Grid
+{
+  #ThreeRows($one, $two, $three)
+  combine RowDefinitions: RowDefinition { Height: $four }
+}
+
+mixin FiveRows (one = none, two = none, three = none, four = none, five = none) for Grid
+{
+  #FourRows($one, $two, $three, $four)
+  combine RowDefinitions: RowDefinition { Height: $five }
+}
+
+mixin Cell (row = none, column = none, rowSpan = none, columnSpan = none) for FrameworkElement {
+  Grid.Row: $row
+  Grid.Column: $column
+  Grid.RowSpan: $rowSpan
+  Grid.ColumnSpan: $columnSpan
+}
+
+alias ImageCached(source) {
+  Image {    
+    Source: BitmapImage {
+      UriCachePolicy: "Revalidate"
+      UriSource: $source
+    }
+  }
+}
+
+mixin Setter(property, value, targetName=none) for Style {
+  Setter { Property: $property, Value: $value, TargetName: $targetName }
+}
+
+/*
+mixin AddSetter(property, value, targetName=none) for Style {
+  combine Setters: #Setter($property, $value, $targetName) {}
+}*/
+
+alias DataTrigger(binding, bindingValue) {
+  DataTrigger { Binding: $binding, Value: $bindingValue }
+}
+
+alias Trigger(property, value) {
+  Trigger { Property: $property, Value: $value }
+}
+
+alias EventTrigger(event, sourceName=none) {
+  EventTrigger { RoutedEvent: $event, SourceName: $sourceName }
+}
+
+alias DataTrigger_SetProperty(binding, bindingValue, property, propertyValue) {
+  @DataTrigger ($binding, $bindingValue) {
+    #Setter($property, $propertyValue)
+  }
+}
+
+alias Trigger_SetProperty(triggerProperty, triggerValue, property, propertyValue) {
+  @Trigger ($triggerProperty, $triggerValue) {
+    #Setter($property, $propertyValue)
+  }
+}
+
+alias EventTrigger_SetProperty(event, property, propertyValue) {
+  @EventTrigger ($event) {
+    #Setter($property, $propertyValue)
+  }
+}
+alias VisibleIf_DataTrigger(binding, valueForVisible) {
+  @DataTrigger_SetProperty($binding, $valueForVisible, "Visibility", "Visible") {}
+}
+
+alias CollapsedIf_DataTrigger(binding, valueForCollapsed) {
+  @DataTrigger_SetProperty($binding, $valueForCollapsed, "Visibility", "Collapsed") {}
+}
+
+alias StackPanelHorizontal() {
+  StackPanel {
+    Orientation: Horizontal
+  }
+}
+
+alias GridItemsControl() {
+  ItemsControl {
+    ScrollViewer.HorizontalScrollBarVisibility: Disabled,
+
+    ItemsPanel: ItemsPanelTemplate { 
+      WrapPanel {
+        IsItemsHost: true
+        Orientation: Horizontal
+      }
+    }
+  }  
+}
+
+////////////////
+// Animations //
+////////////////
+
+alias DoubleAnimation(property, frm = "0", to = "1", duration = "0:0:1", targetName=none, beginTime=none) {
+  DoubleAnimation {
+    Storyboard.TargetProperty: $property
+    Storyboard.TargetName: $targetName
+    From: $frm
+    To: $to
+    Duration: $duration
+    BeginTime: $beginTime
+  }
+}
+
+alias DoubleAnimationStoryboard (property, frm = "0", to = "1", duration = "0:0:1", targetName=none) {
+  BeginStoryboard {
+    Storyboard {
+      @DoubleAnimation($property, $frm, $to, $duration, $targetName) {}
+    }
+  }
+}
+
+mixin DoubleAnimation_PropertyTrigger(triggerProperty, triggerValue, animationProperty, frm, to, duration) for Style {  
+  combine Triggers: @Trigger ($triggerProperty, $triggerValue) {
+    EnterActions: @DoubleAnimationStoryboard($animationProperty, $frm, $to, $duration) {}
+  }
+}
+
+mixin DoubleAnimation_PropertyTrigger_Toggle(triggerProperty, triggerValue, animationProperty, frm, to, duration) for Style {  
+  combine Triggers: @Trigger ($triggerProperty, $triggerValue) {
+    EnterActions: @DoubleAnimationStoryboard($animationProperty, $frm, $to, $duration) {}
+    ExitActions: @DoubleAnimationStoryboard($animationProperty, $to, $frm, $duration) {}
+  }
+}
+
+mixin DoubleAnimation_EventTrigger(triggerEvent, animationProperty, frm, to, duration) for Style {
+  combine Triggers: EventTrigger {    
+    RoutedEvent: $triggerEvent
+    @DoubleAnimationStoryboard($animationProperty, $frm, $to, $duration) {}
+  }
+}
+
+mixin DoubleAnimation_DataTrigger(binding, value, animationProperty, frm, to, duration) for Style {
+  combine Triggers: DataTrigger {  
+    Binding: $binding
+    Value: $value
+    EnterActions: @DoubleAnimationStoryboard($animationProperty, $frm, $to, $duration) {}
+  }
+}
+
+mixin FadeIn_OnProperty(property, value, frm = "0", to = "1", duration = "0:0:1") for Style {
+  #DoubleAnimation_PropertyTrigger($property, $value, "Opacity", $frm, $to, $duration)
+}
+
+mixin FadeOut_OnProperty(property, value, frm = "1", to = "0", duration = "0:0:1") for Style {
+  #DoubleAnimation_PropertyTrigger($property, $value, "Opacity", $frm, $to, $duration)
+}
+
+mixin FadeIn_OnEvent(event, frm = "0", to = "1", duration = "0:0:1") for Style {
+  #DoubleAnimation_EventTrigger($event, "Opacity", $frm, $to, $duration)
+}
+
+mixin FadeOut_OnEvent(event, frm = "1", to = "0", duration = "0:0:1") for Style {
+  #DoubleAnimation_EventTrigger($event, "Opacity", $frm, $to, $duration)
+}
+
+mixin FadeIn_OnData(binding, value, from_ = "0", to = "1", duration = "0:0:1") for Style {
+  #DoubleAnimation_DataTrigger($binding, $value, "Opacity", $from_, $to, $duration)
+}
+
+mixin FadeOut_OnData(binding, value, from_ = "1", to = "0", duration = "0:0:1") for Style {
+  #DoubleAnimation_DataTrigger($binding, $value, "Opacity", $from_, $to, $duration)
+}
+
+mixin Property_OnBinding(binding, bindingValue, property, propertyValue, initialValue) for Style {
+  #Setter("Visibility", $initialValue)
+  combine Triggers: [
+    @DataTrigger_SetProperty($binding, $bindingValue, $property, $propertyValue) {}
+  ]
+}
+
+mixin Visibility_OnBinding(binding, bindingValue, visibilityValue="Visible", initialValue="Collapsed") for Style {
+  #Property_OnBinding($binding, $bindingValue, "Visibility", $visibilityValue, $initialValue)
+}
+
+mixin Fade_OnBinding(binding, bindingValue) for Style {
+  #Setter("Visibility", "Visible")
+  #Setter("Opacity", "0")
+
+  combine Triggers: [
+    @DataTrigger($binding, $bindingValue) {
+      EnterActions: [
+        @DoubleAnimationStoryboard("Opacity", 0, 1, "0:0:0.5") {}  
+      ]
+      ExitActions: [
+        @DoubleAnimationStoryboard("Opacity", 1, 0, "0:0:0.5") {}  
+      ]
+      #Setter("Opacity", 1)
+    }
+    @Trigger("Opacity", 0) {
+      #Setter("Visibility", "Hidden")
+    }
+  ]
+}
+
+mixin MergeDictionary (source) for ResourceDictionary {
+  combine MergedDictionaries: ResourceDictionary { Source: $source }
+}

DiscordChatExporter/packages.config

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<packages>
+  <package id="Ammy" version="1.2.87" targetFramework="net461" />
+  <package id="Ammy.WPF" version="1.2.87" targetFramework="net461" />
+  <package id="CommonServiceLocator" version="1.3" targetFramework="net461" />
+  <package id="MaterialDesignColors" version="1.1.3" targetFramework="net461" />
+  <package id="MaterialDesignThemes" version="2.3.1.953" targetFramework="net461" />
+  <package id="MvvmLightLibs" version="5.3.0.0" targetFramework="net461" />
+  <package id="Newtonsoft.Json" version="10.0.3" targetFramework="net461" />
+  <package id="Tyrrrz.Extensions" version="1.4.1" targetFramework="net461" />
+  <package id="Tyrrrz.Settings" version="1.3.0" targetFramework="net461" />
+</packages>

Readme.md

@@ -1,49 +1,40 @@
 # DiscordChatExporter
 
-Command line executable that can export [Discord](https://discordapp.com) channel chat logs to a pretty HTML file.
+[![Build](https://img.shields.io/appveyor/ci/Tyrrrz/DiscordChatExporter/master.svg)](https://ci.appveyor.com/project/Tyrrrz/DiscordChatExporter)
+[![Release](https://img.shields.io/github/release/Tyrrrz/DiscordChatExporter.svg)](https://github.com/Tyrrrz/DiscordChatExporter/releases)
+[![Downloads](https://img.shields.io/github/downloads/Tyrrrz/DiscordChatExporter/total.svg)](https://github.com/Tyrrrz/DiscordChatExporter/releases)
+
+DiscordChatExporter can be used to export message history from a [Discord](https://discordapp.com) channel to a file. It works for both direct message chats and guild chats, supports markdown, message grouping, and attachments. The tool also lets you select from/to dates to limit the exported messages. There are options to configure the output, such as date format, color theme, message grouping limit, etc.
 
 ## Screenshots
 
-![](http://www.tyrrrz.me/projects/images/discordchatexporter_1.png)
+![](http://www.tyrrrz.me/Projects/DiscordChatExporter/Images/1.png)
+![](http://www.tyrrrz.me/Projects/DiscordChatExporter/Images/4.png)
+
+## Download
+
+- [Stable releases](https://github.com/Tyrrrz/DiscordChatExporter/releases)
+- [Continuous integration](https://ci.appveyor.com/project/Tyrrrz/DiscordChatExporter)
 
 ## Features
 
-- Produces output styled similar to the Discord's light theme
+- Intuitive GUI that displays available guilds and channels
-- Displays user avatars
+- Date ranges to limit messages
 - Groups messages by author and time
-- Handles Discord markdown characters
+- Export to a plain text file
-- Converts URLs to links
+- Export to an HTML file
-- Inlines attached images with a link to the full version
+  - Dark and light themes
-- Inserts download links for other types of attached files
+  - User avatars
-- Marks edited messages with a timestamp
+  - Inline image attachments
-
+  - Full markdown support
-## Usage
+  - Automatic links
-
+  - Styled similarly to the app
-The program expects an access token and channel ID as parameters.
-
-`DiscordChatExporter.exe /token:REkOTVqm9RWOTNOLCdiuMpWd.QiglBz.Lub0E0TZ1xX4ZxCtnwtpBhWt3v1 /channelId:459360869055190534`
-
-#### Getting access token:
-
-- Open Discord desktop or web client
-- Press `Ctrl+Shift+I`
-- Navigate to `Storage > LocalStorage > discordapp.com`
-- Find the value for `token` and extract it
-
-#### Getting channel ID:
-
-- Open Discord desktop or web client
-- Navigate to any DM or server channel
-- Extract the current URL:
-    - If using desktop client, press `Ctrl+Shift+I`, type `window.location.href` in console and extract the result
-    - If using web client, just take the current URL from the address bar
-- Pull the ID from the URL:
-    - If it's a DM channel, the format looks like this: `https://discordapp.com/channels/@me/CHANNEL_ID`
-    - If it's a server channel, the format looks like this:
-    `https://discordapp.com/channels/WHATEVER/CHANNEL_ID`
 
 ## Libraries used
 
-- [HtmlAgilityPack](https://github.com/zzzprojects/html-agility-pack)
+- [AmmyUI](https://github.com/AmmyUI/AmmyUI)
-- [Newtonsoft.Json](https://github.com/JamesNK/Newtonsoft.Json)
+- [GalaSoft.MVVMLight](http://www.mvvmlight.net)
+- [MaterialDesignInXamlToolkit](https://github.com/ButchersBoy/MaterialDesignInXamlToolkit)
+- [Newtonsoft.Json](http://www.newtonsoft.com/json)
 - [Tyrrrz.Extensions](https://github.com/Tyrrrz/Extensions)
+- [Tyrrrz.Settings](https://github.com/Tyrrrz/Settings)