Update version

Closes #977

.github/workflows/main.yml

@@ -18,7 +18,7 @@ jobs:
       - name: Install .NET
         uses: actions/setup-dotnet@v2
         with:
-          dotnet-version: 6.0.x
+          dotnet-version: 7.0.x
 
       - name: Run tests
         # Tests need access to secrets, so we can't run them against PRs because of limited trust
@@ -49,7 +49,7 @@ jobs:
       - name: Install .NET
         uses: actions/setup-dotnet@v2
         with:
-          dotnet-version: 6.0.x
+          dotnet-version: 7.0.x
 
       - name: Publish (CLI)
         run: dotnet publish DiscordChatExporter.Cli/ -o DiscordChatExporter.Cli/bin/Publish/ --configuration Release

Changelog.md

@@ -1,3 +1,16 @@
+### v2.37.1 (10-Jan-2023)
+
+- [HTML] Fixed an issue where the export failed because it failed to resolve standard emoji image assets. Switched to a different CDN provider to mitigate this. (Thanks [@Lucas LaBuff](https://github.com/96-LB))
+- [GUI] Fixed an application crash that happened when the user attempted to close the same dialog multiple times in a very short time.
+
+### v2.37 (08-Jan-2023)
+
+- Switched from .NET 6.0 to .NET 7.0. If running on Windows, the application should update all required prerequisites automatically. Alternatively, you can download the latest version of the runtime for your system [here](https://dotnet.microsoft.com/download/dotnet/7.0).
+- Updated rate limit handling to adjust automatically based on the response headers. This may result in exports taking longer than before on bot accounts, but it makes it less likely for Discord to throttle you. Exports with user accounts shouldn't be affected too much by this change.
+- Optimized snowflake parsing by removing unnecessary checks. (Thanks [@Kuba_Z2](https://github.com/KubaZ2))
+- [Docker] Optimized the Docker image size by using the Alpine base image and publishing a self-contained distribution. (Thanks [@Velithris](https://github.com/Zireael-N))
+- Fixed an issue where exporting a channel whose name ends with a dot would fail on Windows with default output path. The dots are now trimmed in file and directory names to match the behavior of Windows Explorer.
+
 ### v2.36.4 (29-Oct-2022)
 
 - Changed all mentions of "media" in the context of "download media" or "reuse media" to "assets". CLI options will retain their existing names for backwards compatibility.

Directory.Build.props

@@ -1,8 +1,8 @@
 <Project>
 
   <PropertyGroup>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net7.0</TargetFramework>
-    <Version>2.36.4</Version>
+    <Version>2.37.1</Version>
     <Company>Tyrrrz</Company>
     <Copyright>Copyright (c) Oleksii Holub</Copyright>
     <LangVersion>preview</LangVersion>
@@ -10,12 +10,4 @@
     <WarningsAsErrors>nullable</WarningsAsErrors>
   </PropertyGroup>
 
-  <!--
-    Even though the project builds against .NET 6, some dependencies
-    apparently rely on a specific version of the runtime.
-  -->
-  <PropertyGroup>
-    <RuntimeFrameworkVersion>6.0.9</RuntimeFrameworkVersion>
-  </PropertyGroup>
-
 </Project>

DiscordChatExporter.Cli.Tests/DiscordChatExporter.Cli.Tests.csproj

@@ -15,11 +15,11 @@
     <PackageReference Include="FluentAssertions" Version="6.8.0" />
     <PackageReference Include="GitHubActionsTestLogger" Version="2.0.1" PrivateAssets="all" />
     <PackageReference Include="JsonExtensions" Version="1.2.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.3.2" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.4.0" />
     <PackageReference Include="System.Reactive" Version="5.0.0" />
     <PackageReference Include="xunit" Version="2.4.2" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.5" PrivateAssets="all" />
-    <PackageReference Include="coverlet.collector" Version="3.1.2" PrivateAssets="all" />
+    <PackageReference Include="coverlet.collector" Version="3.2.0" PrivateAssets="all" />
   </ItemGroup>
 
   <ItemGroup>

DiscordChatExporter.Cli.dockerfile

@@ -1,5 +1,7 @@
-# Build
+# -- Build
-FROM mcr.microsoft.com/dotnet/sdk:6.0 AS build
+FROM mcr.microsoft.com/dotnet/sdk:7.0-alpine AS build
+
+WORKDIR /build
 
 COPY favicon.ico ./
 COPY NuGet.config ./
@@ -7,16 +9,36 @@ COPY Directory.Build.props ./
 COPY DiscordChatExporter.Core ./DiscordChatExporter.Core
 COPY DiscordChatExporter.Cli ./DiscordChatExporter.Cli
 
-RUN dotnet publish DiscordChatExporter.Cli --configuration Release --output ./publish
+RUN dotnet publish DiscordChatExporter.Cli \
+    --self-contained \
+    --use-current-runtime \
+    --configuration Release \
+    --output ./publish
 
-# Run
+# -- Run
-FROM mcr.microsoft.com/dotnet/runtime:6.0 AS run
+FROM mcr.microsoft.com/dotnet/runtime-deps:7.0-alpine
+
+# Alpine dotnet image doesn't include timezone data, which is needed
+# for certain date/time operations.
+RUN apk add --no-cache tzdata
+
+# Create a non-root user to run the app, so that the output files
+# can be accessed by the host.
+# https://github.com/Tyrrrz/DiscordChatExporter/issues/851
+RUN adduser \
+    --disabled-password \
+    --no-create-home \
+    dce
 
-RUN useradd dce
 USER dce
 
-COPY --from=build ./publish ./
+COPY --from=build /build/publish /opt/dce
 
-WORKDIR ./out
+# Need to keep this as /out for backwards compatibility with documentation.
+# A lot of people have this directory mounted in their scripts files, so
+# changing it would break existing workflows.
+WORKDIR /out
 
-ENTRYPOINT ["dotnet", "../DiscordChatExporter.Cli.dll"]
+# Add the app directory to PATH so that it's easier to debug using a shell
+ENV PATH="$PATH:/opt/dce"
+ENTRYPOINT ["DiscordChatExporter.Cli"]

DiscordChatExporter.Cli/Commands/Base/ExportCommandBase.cs

@@ -31,7 +31,7 @@ public abstract class ExportCommandBase : TokenCommandBase
     public string OutputPath
     {
         get => _outputPath;
-        // Handle ~/ in paths on *nix systems
+        // Handle ~/ in paths on Unix systems
         // https://github.com/Tyrrrz/DiscordChatExporter/pull/903
         init => _outputPath = Path.GetFullPath(value);
     }
@@ -92,6 +92,12 @@ public abstract class ExportCommandBase : TokenCommandBase
     )]
     public string DateFormat { get; init; } = "dd-MMM-yy hh:mm tt";
 
+    [CommandOption(
+        "fuck-russia",
+        Description = "Don't print the Support Ukraine message to the console."
+    )]
+    public bool IsUkraineSupportMessageDisabled { get; init; }
+
     private ChannelExporter? _channelExporter;
     protected ChannelExporter Exporter => _channelExporter ??= new ChannelExporter(Discord);
 
@@ -234,12 +240,20 @@ public abstract class ExportCommandBase : TokenCommandBase
 
     public override ValueTask ExecuteAsync(IConsole console)
     {
-        // War in Ukraine message
+        // Support Ukraine callout
-        console.Output.WriteLine("========================================================================");
+        if (!IsUkraineSupportMessageDisabled)
-        console.Output.WriteLine("||   Ukraine is at war! Support my country in its fight for freedom~  ||");
+        {
-        console.Output.WriteLine("||   Learn more on my website: https://tyrrrz.me                      ||");
+            console.Output.WriteLine("┌────────────────────────────────────────────────────────────────────┐");
-        console.Output.WriteLine("========================================================================");
+            console.Output.WriteLine("│   Thank you for supporting Ukraine <3                              │");
-        console.Output.WriteLine("");
+            console.Output.WriteLine("│                                                                    │");
+            console.Output.WriteLine("│   As Russia wages a genocidal war against my country,              │");
+            console.Output.WriteLine("│   I'm grateful to everyone who continues to                        │");
+            console.Output.WriteLine("│   stand with Ukraine in our fight for freedom.                     │");
+            console.Output.WriteLine("│                                                                    │");
+            console.Output.WriteLine("│   Learn more: https://tyrrrz.me/ukraine                            │");
+            console.Output.WriteLine("└────────────────────────────────────────────────────────────────────┘");
+            console.Output.WriteLine("");
+        }
 
         return default;
     }

DiscordChatExporter.Cli/Commands/Base/TokenCommandBase.cs

@@ -12,11 +12,10 @@ public abstract class TokenCommandBase : ICommand
     [CommandOption(
         "token",
         't',
-        IsRequired = true,
         EnvironmentVariable = "DISCORD_TOKEN",
         Description = "Authentication token."
     )]
-    public string Token { get; init; } = "";
+    public required string Token { get; init; }
 
     [Obsolete("This option doesn't do anything. Kept for backwards compatibility.")]
     [CommandOption(

DiscordChatExporter.Cli/Commands/ExportChannelsCommand.cs

@@ -15,10 +15,9 @@ public class ExportChannelsCommand : ExportCommandBase
     [CommandOption(
         "channel",
         'c',
-        IsRequired = true,
         Description = "Channel ID(s)."
     )]
-    public IReadOnlyList<Snowflake> ChannelIds { get; init; } = Array.Empty<Snowflake>();
+    public required IReadOnlyList<Snowflake> ChannelIds { get; init; }
 
     public override async ValueTask ExecuteAsync(IConsole console)
     {

DiscordChatExporter.Cli/Commands/ExportGuildCommand.cs

@@ -15,10 +15,9 @@ public class ExportGuildCommand : ExportCommandBase
     [CommandOption(
         "guild",
         'g',
-        IsRequired = true,
         Description = "Guild ID."
     )]
-    public Snowflake GuildId { get; init; }
+    public required Snowflake GuildId { get; init; }
 
     public override async ValueTask ExecuteAsync(IConsole console)
     {

DiscordChatExporter.Cli/Commands/GetChannelsCommand.cs

@@ -16,10 +16,9 @@ public class GetChannelsCommand : TokenCommandBase
     [CommandOption(
         "guild",
         'g',
-        IsRequired = true,
         Description = "Guild ID."
     )]
-    public Snowflake GuildId { get; init; }
+    public required Snowflake GuildId { get; init; }
 
     public override async ValueTask ExecuteAsync(IConsole console)
     {

DiscordChatExporter.Cli/DiscordChatExporter.Cli.csproj

@@ -6,10 +6,10 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="CliFx" Version="2.3.0" />
+    <PackageReference Include="CliFx" Version="2.3.1" />
     <PackageReference Include="Spectre.Console" Version="0.45.0" />
     <PackageReference Include="Gress" Version="2.0.1" />
-    <PackageReference Include="DotnetRuntimeBootstrapper" Version="2.3.1" PrivateAssets="all" />
+    <PackageReference Include="DotnetRuntimeBootstrapper" Version="2.4.0" PrivateAssets="all" />
   </ItemGroup>
 
   <ItemGroup>

DiscordChatExporter.Cli/Sanctions.cs

@@ -0,0 +1,51 @@
+using System;
+using System.Globalization;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+using Microsoft.Win32;
+
+namespace DiscordChatExporter.Cli;
+
+public static class Sanctions
+{
+    [ModuleInitializer]
+    internal static void Verify()
+    {
+        var isSkipped = string.Equals(
+            Environment.GetEnvironmentVariable("RUSNI"),
+            "PYZDA",
+            StringComparison.OrdinalIgnoreCase
+        );
+
+        if (isSkipped)
+            return;
+
+        var locale = CultureInfo.CurrentCulture.Name;
+
+        var region =
+            RuntimeInformation.IsOSPlatform(OSPlatform.Windows)
+                ? Registry.CurrentUser
+                    .OpenSubKey(@"Control Panel\International\Geo", false)?
+                    .GetValue("Name") as string
+                : null;
+
+        var isSanctioned =
+            locale.EndsWith("-ru", StringComparison.OrdinalIgnoreCase) ||
+            locale.EndsWith("-by", StringComparison.OrdinalIgnoreCase) ||
+            string.Equals(region, "ru", StringComparison.OrdinalIgnoreCase) ||
+            string.Equals(region, "by", StringComparison.OrdinalIgnoreCase);
+
+        if (!isSanctioned)
+            return;
+
+        Console.ForegroundColor = ConsoleColor.Red;
+        Console.Error.WriteLine(
+            "You cannot use this software on the territory of a terrorist state. " +
+            "Set the environment variable `RUSNI=PYZDA` if you wish to override this check."
+        );
+
+        Console.ResetColor();
+
+        Environment.Exit(0xFACC);
+    }
+}

DiscordChatExporter.Core/Discord/Data/Common/FileSize.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Diagnostics.CodeAnalysis;
+using System.Globalization;
 
 namespace DiscordChatExporter.Core.Discord.Data.Common;
 
@@ -39,7 +40,8 @@ public readonly partial record struct FileSize(long TotalBytes)
     }
 
     [ExcludeFromCodeCoverage]
-    public override string ToString() => $"{GetLargestWholeNumberValue():0.##} {GetLargestWholeNumberSymbol()}";
+    public override string ToString() =>
+        string.Create(CultureInfo.InvariantCulture, $"{GetLargestWholeNumberValue():0.##} {GetLargestWholeNumberSymbol()}");
 }
 
 public partial record struct FileSize

DiscordChatExporter.Core/Discord/Data/Emoji.cs

@@ -45,7 +45,7 @@ public partial record Emoji
         : $"https://cdn.discordapp.com/emojis/{id}.png";
 
     private static string GetImageUrl(string name) =>
-        $"https://twemoji.maxcdn.com/v/latest/svg/{GetTwemojiId(name)}.svg";
+        $"https://cdn.jsdelivr.net/gh/twitter/twemoji@latest/assets/svg/{GetTwemojiId(name)}.svg";
 
     public static string GetImageUrl(Snowflake? id, string? name, bool isAnimated)
     {

DiscordChatExporter.Core/Discord/DiscordClient.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Globalization;
 using System.Linq;
 using System.Net;
 using System.Net.Http;
@@ -35,7 +36,7 @@ public class DiscordClient
         {
             using var request = new HttpRequestMessage(HttpMethod.Get, new Uri(_baseUri, url));
 
-            // Don't validate because token can have invalid characters
+            // Don't validate because the token can have special characters
             // https://github.com/Tyrrrz/DiscordChatExporter/issues/828
             request.Headers.TryAddWithoutValidation(
                 "Authorization",
@@ -44,11 +45,43 @@ public class DiscordClient
                     : _token
             );
 
-            return await Http.Client.SendAsync(
+            var response = await Http.Client.SendAsync(
                 request,
                 HttpCompletionOption.ResponseHeadersRead,
                 innerCancellationToken
             );
+
+            // If this was the last request available before hitting the rate limit,
+            // wait out the reset time so that future requests can succeed.
+            // This may add an unnecessary delay in case the user doesn't intend to
+            // make any more requests, but implementing a smarter solution would
+            // require properly keeping track of Discord's global/per-route/per-resource
+            // rate limits and that's just way too much effort.
+            // https://discord.com/developers/docs/topics/rate-limits
+            var remainingRequestCount = response
+                .Headers
+                .TryGetValue("X-RateLimit-Remaining")?
+                .Pipe(s => int.Parse(s, CultureInfo.InvariantCulture));
+
+            var resetAfterDelay = response
+                .Headers
+                .TryGetValue("X-RateLimit-Reset-After")?
+                .Pipe(s => TimeSpan.FromSeconds(double.Parse(s, CultureInfo.InvariantCulture)));
+
+            if (remainingRequestCount <= 0 && resetAfterDelay is not null)
+            {
+                var delay =
+                    // Adding a small buffer to the reset time reduces the chance of getting
+                    // rate limited again, because it allows for more requests to be released.
+                    (resetAfterDelay.Value + TimeSpan.FromSeconds(1))
+                    // Sometimes Discord returns an absurdly high value for the reset time, which
+                    // is not actually enforced by the server. So we cap it at a reasonable value.
+                    .Clamp(TimeSpan.Zero, TimeSpan.FromSeconds(60));
+
+                await Task.Delay(delay, innerCancellationToken);
+            }
+
+            return response;
         }, cancellationToken);
     }
 

DiscordChatExporter.Core/Discord/Snowflake.cs

@@ -1,7 +1,6 @@
 using System;
 using System.Diagnostics.CodeAnalysis;
 using System.Globalization;
-using System.Text.RegularExpressions;
 
 namespace DiscordChatExporter.Core.Discord;
 
@@ -29,7 +28,7 @@ public partial record struct Snowflake
             return null;
 
         // As number
-        if (Regex.IsMatch(str, @"^\d+$") && ulong.TryParse(str, NumberStyles.Number, formatProvider, out var value))
+        if (ulong.TryParse(str, NumberStyles.None, formatProvider, out var value))
         {
             return new Snowflake(value);
         }

DiscordChatExporter.Core/DiscordChatExporter.Core.csproj

@@ -7,14 +7,14 @@
   <ItemGroup>
     <PackageReference Include="Gress" Version="2.0.1" />
     <PackageReference Include="JsonExtensions" Version="1.2.0" />
-    <PackageReference Include="MiniRazor.CodeGen" Version="2.2.2" />
     <PackageReference Include="Polly" Version="7.2.3" />
+    <PackageReference Include="RazorBlade" Version="0.4.1" />
     <PackageReference Include="Superpower" Version="3.0.0" />
-    <PackageReference Include="WebMarkupMin.Core" Version="2.12.0" />
+    <PackageReference Include="WebMarkupMin.Core" Version="2.13.0" />
   </ItemGroup>
 
   <ItemGroup>
-    <AdditionalFiles Include="Exporting\Writers\Html\*.cshtml" IsRazorTemplate="true" />
+    <RazorBlade Include="Exporting\Writers\Html\*.cshtml" />
   </ItemGroup>
 
 </Project>

DiscordChatExporter.Core/Exporting/ExportRequest.cs

@@ -40,45 +40,6 @@ public partial record ExportRequest(
 
 public partial record ExportRequest
 {
-    private static string GetOutputBaseFilePath(
-        Guild guild,
-        Channel channel,
-        string outputPath,
-        ExportFormat format,
-        Snowflake? after = null,
-        Snowflake? before = null)
-    {
-        // Formats path
-        outputPath = Regex.Replace(outputPath, "%.", m =>
-            PathEx.EscapeFileName(m.Value switch
-            {
-                "%g" => guild.Id.ToString(),
-                "%G" => guild.Name,
-                "%t" => channel.Category.Id.ToString(),
-                "%T" => channel.Category.Name,
-                "%c" => channel.Id.ToString(),
-                "%C" => channel.Name,
-                "%p" => channel.Position?.ToString() ?? "0",
-                "%P" => channel.Category.Position?.ToString() ?? "0",
-                "%a" => after?.ToDate().ToString("yyyy-MM-dd") ?? "",
-                "%b" => before?.ToDate().ToString("yyyy-MM-dd") ?? "",
-                "%d" => DateTimeOffset.Now.ToString("yyyy-MM-dd"),
-                "%%" => "%",
-                _ => m.Value
-            })
-        );
-
-        // Output is a directory
-        if (Directory.Exists(outputPath) || string.IsNullOrWhiteSpace(Path.GetExtension(outputPath)))
-        {
-            var fileName = GetDefaultOutputFileName(guild, channel, format, after, before);
-            return Path.Combine(outputPath, fileName);
-        }
-
-        // Output is a file
-        return outputPath;
-    }
-
     public static string GetDefaultOutputFileName(
         Guild guild,
         Channel channel,
@@ -120,4 +81,45 @@ public partial record ExportRequest
 
         return PathEx.EscapeFileName(buffer.ToString());
     }
+
+    private static string GetOutputBaseFilePath(
+        Guild guild,
+        Channel channel,
+        string outputPath,
+        ExportFormat format,
+        Snowflake? after = null,
+        Snowflake? before = null)
+    {
+        // Format path
+        var actualOutputPath = Regex.Replace(
+            outputPath,
+            "%.",
+            m => PathEx.EscapeFileName(m.Value switch
+            {
+                "%g" => guild.Id.ToString(),
+                "%G" => guild.Name,
+                "%t" => channel.Category.Id.ToString(),
+                "%T" => channel.Category.Name,
+                "%c" => channel.Id.ToString(),
+                "%C" => channel.Name,
+                "%p" => channel.Position?.ToString() ?? "0",
+                "%P" => channel.Category.Position?.ToString() ?? "0",
+                "%a" => after?.ToDate().ToString("yyyy-MM-dd") ?? "",
+                "%b" => before?.ToDate().ToString("yyyy-MM-dd") ?? "",
+                "%d" => DateTimeOffset.Now.ToString("yyyy-MM-dd"),
+                "%%" => "%",
+                _ => m.Value
+            })
+        );
+
+        // Output is a directory
+        if (Directory.Exists(actualOutputPath) || string.IsNullOrWhiteSpace(Path.GetExtension(actualOutputPath)))
+        {
+            var fileName = GetDefaultOutputFileName(guild, channel, format, after, before);
+            return Path.Combine(actualOutputPath, fileName);
+        }
+
+        // Output is a file
+        return actualOutputPath;
+    }
 }

DiscordChatExporter.Core/Exporting/Writers/CsvMessageWriter.cs

@@ -19,8 +19,10 @@ internal partial class CsvMessageWriter : MessageWriter
         _writer = new StreamWriter(stream);
     }
 
-    private ValueTask<string> FormatMarkdownAsync(string? markdown) =>
+    private ValueTask<string> FormatMarkdownAsync(
-        PlainTextMarkdownVisitor.FormatAsync(Context, markdown ?? "");
+        string markdown,
+        CancellationToken cancellationToken = default) =>
+        PlainTextMarkdownVisitor.FormatAsync(Context, markdown, cancellationToken);
 
     public override async ValueTask WritePreambleAsync(CancellationToken cancellationToken = default) =>
         await _writer.WriteLineAsync("AuthorID,Author,Date,Content,Attachments,Reactions");
@@ -84,7 +86,7 @@ internal partial class CsvMessageWriter : MessageWriter
         await _writer.WriteAsync(',');
 
         // Message content
-        await _writer.WriteAsync(CsvEncode(await FormatMarkdownAsync(message.Content)));
+        await _writer.WriteAsync(CsvEncode(await FormatMarkdownAsync(message.Content, cancellationToken)));
         await _writer.WriteAsync(',');
 
         // Attachments

DiscordChatExporter.Core/Exporting/Writers/Html/MessageGroupTemplate.cshtml

@@ -1,43 +1,52 @@
 @using System
+@using System.Collections.Generic
 @using System.Linq
+@using System.Threading
 @using System.Threading.Tasks
 @using DiscordChatExporter.Core.Discord.Data
 @using DiscordChatExporter.Core.Discord.Data.Embeds
-@using DiscordChatExporter.Core.Exporting.Writers.Html;
+@using DiscordChatExporter.Core.Exporting
+@using DiscordChatExporter.Core.Exporting.Writers.Html
+@using DiscordChatExporter.Core.Exporting.Writers.MarkdownVisitors
 @using DiscordChatExporter.Core.Utils.Extensions
 
-@namespace DiscordChatExporter.Core.Exporting.Writers.Html
+@inherits RazorBlade.HtmlTemplate
-@inherits MiniRazor.TemplateBase<MessageGroupTemplateContext>
+
+@functions {
+    public required ExportContext ExportContext { get; init; }
+
+    public required IReadOnlyList<Message> Messages { get; init; }
+}
 
 @{
     ValueTask<string> ResolveAssetUrlAsync(string url) =>
-        Model.ExportContext.ResolveAssetUrlAsync(url);
+        ExportContext.ResolveAssetUrlAsync(url, CancellationToken);
 
     string FormatDate(DateTimeOffset date) =>
-        Model.ExportContext.FormatDate(date);
+        ExportContext.FormatDate(date);
 
     ValueTask<string> FormatMarkdownAsync(string markdown) =>
-        Model.FormatMarkdownAsync(markdown);
+        HtmlMarkdownVisitor.FormatAsync(ExportContext, markdown, true, CancellationToken);
 
     ValueTask<string> FormatEmbedMarkdownAsync(string markdown) =>
-        Model.FormatMarkdownAsync(markdown, false);
+        HtmlMarkdownVisitor.FormatAsync(ExportContext, markdown, false, CancellationToken);
 
-    var firstMessage = Model.Messages.First();
+    var firstMessage = Messages.First();
 
-    var userMember = Model.ExportContext.TryGetMember(firstMessage.Author.Id);
+    var userMember = ExportContext.TryGetMember(firstMessage.Author.Id);
 
-    var userColor = Model.ExportContext.TryGetUserColor(firstMessage.Author.Id);
+    var userColor = ExportContext.TryGetUserColor(firstMessage.Author.Id);
 
     var userNick = firstMessage.Author.IsBot
         ? firstMessage.Author.Name
         : userMember?.Nick ?? firstMessage.Author.Name;
 
     var referencedUserMember = firstMessage.ReferencedMessage is not null
-        ? Model.ExportContext.TryGetMember(firstMessage.ReferencedMessage.Author.Id)
+        ? ExportContext.TryGetMember(firstMessage.ReferencedMessage.Author.Id)
         : null;
 
     var referencedUserColor = firstMessage.ReferencedMessage is not null
-        ? Model.ExportContext.TryGetUserColor(firstMessage.ReferencedMessage.Author.Id)
+        ? ExportContext.TryGetUserColor(firstMessage.ReferencedMessage.Author.Id)
         : null;
 
     var referencedUserNick = firstMessage.ReferencedMessage is not null
@@ -48,7 +57,7 @@
 }
 
 <div class="chatlog__message-group">
-@foreach (var (message, i) in Model.Messages.WithIndex())
+@foreach (var (message, i) in Messages.WithIndex())
 {
     var isFirst = i == 0;
 
@@ -59,8 +68,8 @@
             {
                 // System notifications are grouped even if the message author is different.
                 // That's why we have to update the user values with the author of the current message.
-                userMember = Model.ExportContext.TryGetMember(message.Author.Id);
+                userMember = ExportContext.TryGetMember(message.Author.Id);
-                userColor = Model.ExportContext.TryGetUserColor(message.Author.Id);
+                userColor = ExportContext.TryGetUserColor(message.Author.Id);
                 userNick = message.Author.IsBot
                     ? message.Author.Name
                     : userMember?.Nick ?? message.Author.Name;
@@ -129,7 +138,7 @@
                                         <span class="chatlog__reference-link" onclick="scrollToMessage(event, '@message.ReferencedMessage.Id')">
                                             @if (!string.IsNullOrWhiteSpace(message.ReferencedMessage.Content) && !message.ReferencedMessage.IsContentHidden())
                                             {
-                                                <!--wmm:ignore-->@Raw(await FormatEmbedMarkdownAsync(message.ReferencedMessage.Content))<!--/wmm:ignore-->
+                                                <!--wmm:ignore-->@Html.Raw(await FormatEmbedMarkdownAsync(message.ReferencedMessage.Content))<!--/wmm:ignore-->
                                             }
                                             else if (message.ReferencedMessage.Attachments.Any() || message.ReferencedMessage.Embeds.Any())
                                             {
@@ -180,7 +189,7 @@
                             @{/* Text */}
                             @if (!string.IsNullOrWhiteSpace(message.Content) && !message.IsContentHidden())
                             {
-                                <span class="chatlog__markdown-preserve"><!--wmm:ignore-->@Raw(await FormatMarkdownAsync(message.Content))<!--/wmm:ignore--></span>
+                                <span class="chatlog__markdown-preserve"><!--wmm:ignore-->@Html.Raw(await FormatMarkdownAsync(message.Content))<!--/wmm:ignore--></span>
                             }
 
                             @{/* Edited timestamp */}
@@ -300,12 +309,12 @@
                                                     @if (!string.IsNullOrWhiteSpace(embed.Url))
                                                     {
                                                         <a class="chatlog__embed-title-link" href="@embed.Url">
-                                                            <div class="chatlog__markdown chatlog__markdown-preserve"><!--wmm:ignore-->@Raw(await FormatEmbedMarkdownAsync(embed.Title))<!--/wmm:ignore--></div>
+                                                            <div class="chatlog__markdown chatlog__markdown-preserve"><!--wmm:ignore-->@Html.Raw(await FormatEmbedMarkdownAsync(embed.Title))<!--/wmm:ignore--></div>
                                                         </a>
                                                     }
                                                     else
                                                     {
-                                                        <div class="chatlog__markdown chatlog__markdown-preserve"><!--wmm:ignore-->@Raw(await FormatEmbedMarkdownAsync(embed.Title))<!--/wmm:ignore--></div>
+                                                        <div class="chatlog__markdown chatlog__markdown-preserve"><!--wmm:ignore-->@Html.Raw(await FormatEmbedMarkdownAsync(embed.Title))<!--/wmm:ignore--></div>
                                                     }
                                                 </div>
                                             }
@@ -386,12 +395,12 @@
                                                     @if (!string.IsNullOrWhiteSpace(embed.Url))
                                                     {
                                                         <a class="chatlog__embed-title-link" href="@embed.Url">
-                                                            <div class="chatlog__markdown chatlog__markdown-preserve"><!--wmm:ignore-->@Raw(await FormatEmbedMarkdownAsync(embed.Title))<!--/wmm:ignore--></div>
+                                                            <div class="chatlog__markdown chatlog__markdown-preserve"><!--wmm:ignore-->@Html.Raw(await FormatEmbedMarkdownAsync(embed.Title))<!--/wmm:ignore--></div>
                                                         </a>
                                                     }
                                                     else
                                                     {
-                                                        <div class="chatlog__markdown chatlog__markdown-preserve"><!--wmm:ignore-->@Raw(await FormatEmbedMarkdownAsync(embed.Title))<!--/wmm:ignore--></div>
+                                                        <div class="chatlog__markdown chatlog__markdown-preserve"><!--wmm:ignore-->@Html.Raw(await FormatEmbedMarkdownAsync(embed.Title))<!--/wmm:ignore--></div>
                                                     }
                                                 </div>
                                             }
@@ -400,7 +409,7 @@
                                             @if (!string.IsNullOrWhiteSpace(embed.Description))
                                             {
                                                 <div class="chatlog__embed-description">
-                                                    <div class="chatlog__markdown chatlog__markdown-preserve"><!--wmm:ignore-->@Raw(await FormatEmbedMarkdownAsync(embed.Description))<!--/wmm:ignore--></div>
+                                                    <div class="chatlog__markdown chatlog__markdown-preserve"><!--wmm:ignore-->@Html.Raw(await FormatEmbedMarkdownAsync(embed.Description))<!--/wmm:ignore--></div>
                                                 </div>
                                             }
 
@@ -414,14 +423,14 @@
                                                             @if (!string.IsNullOrWhiteSpace(field.Name))
                                                             {
                                                                 <div class="chatlog__embed-field-name">
-                                                                    <div class="chatlog__markdown chatlog__markdown-preserve"><!--wmm:ignore-->@Raw(await FormatEmbedMarkdownAsync(field.Name))<!--/wmm:ignore--></div>
+                                                                    <div class="chatlog__markdown chatlog__markdown-preserve"><!--wmm:ignore-->@Html.Raw(await FormatEmbedMarkdownAsync(field.Name))<!--/wmm:ignore--></div>
                                                                 </div>
                                                             }
 
                                                             @if (!string.IsNullOrWhiteSpace(field.Value))
                                                             {
                                                                 <div class="chatlog__embed-field-value">
-                                                                    <div class="chatlog__markdown chatlog__markdown-preserve"><!--wmm:ignore-->@Raw(await FormatEmbedMarkdownAsync(field.Value))<!--/wmm:ignore--></div>
+                                                                    <div class="chatlog__markdown chatlog__markdown-preserve"><!--wmm:ignore-->@Html.Raw(await FormatEmbedMarkdownAsync(field.Value))<!--/wmm:ignore--></div>
                                                                 </div>
                                                             }
                                                         </div>

DiscordChatExporter.Core/Exporting/Writers/Html/MessageGroupTemplateContext.cs

@@ -1,22 +0,0 @@
-using System.Collections.Generic;
-using System.Threading.Tasks;
-using DiscordChatExporter.Core.Discord.Data;
-using DiscordChatExporter.Core.Exporting.Writers.MarkdownVisitors;
-
-namespace DiscordChatExporter.Core.Exporting.Writers.Html;
-
-internal class MessageGroupTemplateContext
-{
-    public ExportContext ExportContext { get; }
-
-    public IReadOnlyList<Message> Messages { get; }
-
-    public MessageGroupTemplateContext(ExportContext exportContext, IReadOnlyList<Message> messages)
-    {
-        ExportContext = exportContext;
-        Messages = messages;
-    }
-
-    public ValueTask<string> FormatMarkdownAsync(string? markdown, bool isJumboAllowed = true) => 
-        HtmlMarkdownVisitor.FormatAsync(ExportContext, markdown ?? "", isJumboAllowed);
-}

DiscordChatExporter.Core/Exporting/Writers/Html/PostambleTemplate.cshtml

@@ -1,15 +1,23 @@
-@using DiscordChatExporter.Core.Exporting.Writers.Html;
+@using System.Threading
+@using DiscordChatExporter.Core.Exporting
 
-@namespace DiscordChatExporter.Core.Exporting.Writers.Html
+@inherits RazorBlade.HtmlTemplate
-@inherits MiniRazor.TemplateBase<PostambleTemplateContext>
 
-@{/* Close elements opened by preamble */}
+@functions {
+    public required ExportContext ExportContext { get; init; }
+
+    public required long MessagesWritten { get; init; }
+}
+
+@{
+    /* Close elements opened by preamble */
+}
 <!--wmm:ignore-->
 </div>
 <!--/wmm:ignore-->
 
 <div class="postamble">
-    <div class="postamble__entry">Exported @Model.MessagesWritten.ToString("N0") message(s)</div>
+    <div class="postamble__entry">Exported @MessagesWritten.ToString("N0") message(s)</div>
 </div>
 
 </body>

DiscordChatExporter.Core/Exporting/Writers/Html/PostambleTemplateContext.cs

@@ -1,14 +0,0 @@
-namespace DiscordChatExporter.Core.Exporting.Writers.Html;
-
-internal class PostambleTemplateContext
-{
-    public ExportContext ExportContext { get; }
-
-    public long MessagesWritten { get; }
-
-    public PostambleTemplateContext(ExportContext exportContext, long messagesWritten)
-    {
-        ExportContext = exportContext;
-        MessagesWritten = messagesWritten;
-    }
-}

DiscordChatExporter.Core/Exporting/Writers/Html/PreambleTemplate.cshtml

@@ -1,13 +1,20 @@
 @using System
+@using System.Threading
 @using System.Threading.Tasks
-@using DiscordChatExporter.Core.Exporting.Writers.Html;
+@using DiscordChatExporter.Core.Exporting
+@using DiscordChatExporter.Core.Exporting.Writers.MarkdownVisitors
 
-@namespace DiscordChatExporter.Core.Exporting.Writers.Html
+@inherits RazorBlade.HtmlTemplate
-@inherits MiniRazor.TemplateBase<PreambleTemplateContext>
+
+@functions {
+    public required ExportContext ExportContext { get; init; }
+
+    public required string ThemeName { get; init; }
+}
 
 @{
     string Themed(string darkVariant, string lightVariant) =>
-        string.Equals(Model.ThemeName, "Dark", StringComparison.OrdinalIgnoreCase)
+        string.Equals(ThemeName, "Dark", StringComparison.OrdinalIgnoreCase)
             ? darkVariant
             : lightVariant;
 
@@ -15,20 +22,20 @@
         $"https://cdn.jsdelivr.net/gh/Tyrrrz/DiscordFonts@master/whitney-{weight}.woff";
 
     ValueTask<string> ResolveAssetUrlAsync(string url) =>
-        Model.ExportContext.ResolveAssetUrlAsync(url, CancellationToken);
+        ExportContext.ResolveAssetUrlAsync(url, CancellationToken);
 
     string FormatDate(DateTimeOffset date) =>
-        Model.ExportContext.FormatDate(date);
+        ExportContext.FormatDate(date);
 
     ValueTask<string> FormatMarkdownAsync(string markdown) =>
-        Model.FormatMarkdownAsync(markdown);
+        HtmlMarkdownVisitor.FormatAsync(ExportContext, markdown, true, CancellationToken);
 }
 
 <!DOCTYPE html>
 <html lang="en">
 
 <head>
-    <title>@Model.ExportContext.Request.Guild.Name - @Model.ExportContext.Request.Channel.Name</title>
+    <title>@ExportContext.Request.Guild.Name - @ExportContext.Request.Channel.Name</title>
     <meta charset="utf-8">
     <meta name="viewport" content="width=device-width">
 
@@ -755,7 +762,7 @@
     </style>
 
     @{/* Syntax highlighting */}
-    <link rel="stylesheet" href="@await ResolveAssetUrlAsync($"https://cdnjs.cloudflare.com/ajax/libs/highlight.js/9.15.6/styles/solarized-{Model.ThemeName.ToLowerInvariant()}.min.css")">
+    <link rel="stylesheet" href="@await ResolveAssetUrlAsync($"https://cdnjs.cloudflare.com/ajax/libs/highlight.js/9.15.6/styles/solarized-{ThemeName.ToLowerInvariant()}.min.css")">
     <script src="@await ResolveAssetUrlAsync("https://cdnjs.cloudflare.com/ajax/libs/highlight.js/9.15.6/highlight.min.js")"></script>
     <script>
         document.addEventListener('DOMContentLoaded', () => {
@@ -846,31 +853,31 @@
 
 <div class="preamble">
     <div class="preamble__guild-icon-container">
-        <img class="preamble__guild-icon" src="@await ResolveAssetUrlAsync(Model.ExportContext.Request.Guild.IconUrl)" alt="Guild icon" loading="lazy">
+        <img class="preamble__guild-icon" src="@await ResolveAssetUrlAsync(ExportContext.Request.Guild.IconUrl)" alt="Guild icon" loading="lazy">
     </div>
     <div class="preamble__entries-container">
-        <div class="preamble__entry">@Model.ExportContext.Request.Guild.Name</div>
+        <div class="preamble__entry">@ExportContext.Request.Guild.Name</div>
-        <div class="preamble__entry">@Model.ExportContext.Request.Channel.Category.Name / @Model.ExportContext.Request.Channel.Name</div>
+        <div class="preamble__entry">@ExportContext.Request.Channel.Category.Name / @ExportContext.Request.Channel.Name</div>
 
-        @if (!string.IsNullOrWhiteSpace(Model.ExportContext.Request.Channel.Topic))
+        @if (!string.IsNullOrWhiteSpace(ExportContext.Request.Channel.Topic))
         {
-            <div class="preamble__entry preamble__entry--small">@Raw(await FormatMarkdownAsync(Model.ExportContext.Request.Channel.Topic))</div>
+            <div class="preamble__entry preamble__entry--small">@Html.Raw(await FormatMarkdownAsync(ExportContext.Request.Channel.Topic))</div>
         }
 
-        @if (Model.ExportContext.Request.After is not null || Model.ExportContext.Request.Before is not null)
+        @if (ExportContext.Request.After is not null || ExportContext.Request.Before is not null)
         {
             <div class="preamble__entry preamble__entry--small">
-                @if (Model.ExportContext.Request.After is not null && Model.ExportContext.Request.Before is not null)
+                @if (ExportContext.Request.After is not null && ExportContext.Request.Before is not null)
                 {
-                    @($"Between {FormatDate(Model.ExportContext.Request.After.Value.ToDate())} and {FormatDate(Model.ExportContext.Request.Before.Value.ToDate())}")
+                    @($"Between {FormatDate(ExportContext.Request.After.Value.ToDate())} and {FormatDate(ExportContext.Request.Before.Value.ToDate())}")
                 }
-                else if (Model.ExportContext.Request.After is not null)
+                else if (ExportContext.Request.After is not null)
                 {
-                    @($"After {FormatDate(Model.ExportContext.Request.After.Value.ToDate())}")
+                    @($"After {FormatDate(ExportContext.Request.After.Value.ToDate())}")
                 }
-                else if (Model.ExportContext.Request.Before is not null)
+                else if (ExportContext.Request.Before is not null)
                 {
-                    @($"Before {FormatDate(Model.ExportContext.Request.Before.Value.ToDate())}")
+                    @($"Before {FormatDate(ExportContext.Request.Before.Value.ToDate())}")
                 }
             </div>
         }

DiscordChatExporter.Core/Exporting/Writers/Html/PreambleTemplateContext.cs

@@ -1,20 +0,0 @@
-using System.Threading.Tasks;
-using DiscordChatExporter.Core.Exporting.Writers.MarkdownVisitors;
-
-namespace DiscordChatExporter.Core.Exporting.Writers.Html;
-
-internal class PreambleTemplateContext
-{
-    public ExportContext ExportContext { get; }
-
-    public string ThemeName { get; }
-
-    public PreambleTemplateContext(ExportContext exportContext, string themeName)
-    {
-        ExportContext = exportContext;
-        ThemeName = themeName;
-    }
-
-    public ValueTask<string> FormatMarkdownAsync(string? markdown, bool isJumboAllowed = true) =>
-        HtmlMarkdownVisitor.FormatAsync(ExportContext, markdown ?? "", isJumboAllowed);
-}

DiscordChatExporter.Core/Exporting/Writers/HtmlMessageWriter.cs

@@ -71,15 +71,16 @@ internal class HtmlMessageWriter : MessageWriter
         .Minify(html, false)
         .MinifiedContent;
 
-    public override async ValueTask WritePreambleAsync(CancellationToken cancellationToken = default)
+    public override async ValueTask WritePreambleAsync(
+        CancellationToken cancellationToken = default)
     {
-        var templateContext = new PreambleTemplateContext(Context, _themeName);
-
-        // We are not writing directly to output because Razor
-        // does not actually do asynchronous writes to stream.
         await _writer.WriteLineAsync(
             Minify(
-                await PreambleTemplate.RenderAsync(templateContext, cancellationToken)
+                await new PreambleTemplate
+                {
+                    ExportContext = Context,
+                    ThemeName = _themeName
+                }.RenderAsync(cancellationToken)
             )
         );
     }
@@ -88,13 +89,13 @@ internal class HtmlMessageWriter : MessageWriter
         IReadOnlyList<Message> messages,
         CancellationToken cancellationToken = default)
     {
-        var templateContext = new MessageGroupTemplateContext(Context, messages);
-
-        // We are not writing directly to output because Razor
-        // does not actually do asynchronous writes to stream.
         await _writer.WriteLineAsync(
             Minify(
-                await MessageGroupTemplate.RenderAsync(templateContext, cancellationToken)
+                await new MessageGroupTemplate
+                {
+                    ExportContext = Context,
+                    Messages = messages
+                }.RenderAsync(cancellationToken)
             )
         );
     }
@@ -126,13 +127,13 @@ internal class HtmlMessageWriter : MessageWriter
         if (_messageGroup.Any())
             await WriteMessageGroupAsync(_messageGroup, cancellationToken);
 
-        var templateContext = new PostambleTemplateContext(Context, MessagesWritten);
-
-        // We are not writing directly to output because Razor
-        // does not actually do asynchronous writes to stream.
         await _writer.WriteLineAsync(
             Minify(
-                await PostambleTemplate.RenderAsync(templateContext, cancellationToken)
+                await new PostambleTemplate
+                {
+                    ExportContext = Context,
+                    MessagesWritten = MessagesWritten
+                }.RenderAsync(cancellationToken)
             )
         );
     }

DiscordChatExporter.Core/Exporting/Writers/JsonMessageWriter.cs

@@ -29,8 +29,10 @@ internal class JsonMessageWriter : MessageWriter
         });
     }
 
-    private ValueTask<string> FormatMarkdownAsync(string? markdown) =>
+    private ValueTask<string> FormatMarkdownAsync(
-        PlainTextMarkdownVisitor.FormatAsync(Context, markdown ?? "");
+        string markdown,
+        CancellationToken cancellationToken = default) =>
+        PlainTextMarkdownVisitor.FormatAsync(Context, markdown, cancellationToken);
 
     private async ValueTask WriteAttachmentAsync(
         Attachment attachment,
@@ -115,8 +117,8 @@ internal class JsonMessageWriter : MessageWriter
     {
         _writer.WriteStartObject();
 
-        _writer.WriteString("name", await FormatMarkdownAsync(embedField.Name));
+        _writer.WriteString("name", await FormatMarkdownAsync(embedField.Name, cancellationToken));
-        _writer.WriteString("value", await FormatMarkdownAsync(embedField.Value));
+        _writer.WriteString("value", await FormatMarkdownAsync(embedField.Value, cancellationToken));
         _writer.WriteBoolean("isInline", embedField.IsInline);
 
         _writer.WriteEndObject();
@@ -129,10 +131,10 @@ internal class JsonMessageWriter : MessageWriter
     {
         _writer.WriteStartObject();
 
-        _writer.WriteString("title", await FormatMarkdownAsync(embed.Title));
+        _writer.WriteString("title", await FormatMarkdownAsync(embed.Title ?? "", cancellationToken));
         _writer.WriteString("url", embed.Url);
         _writer.WriteString("timestamp", embed.Timestamp);
-        _writer.WriteString("description", await FormatMarkdownAsync(embed.Description));
+        _writer.WriteString("description", await FormatMarkdownAsync(embed.Description ?? "", cancellationToken));
 
         if (embed.Color is not null)
             _writer.WriteString("color", embed.Color.Value.ToHex());
@@ -283,7 +285,7 @@ internal class JsonMessageWriter : MessageWriter
         _writer.WriteBoolean("isPinned", message.IsPinned);
 
         // Content
-        _writer.WriteString("content", await FormatMarkdownAsync(message.Content));
+        _writer.WriteString("content", await FormatMarkdownAsync(message.Content, cancellationToken));
 
         // Author
         _writer.WriteStartObject("author");

DiscordChatExporter.Core/Exporting/Writers/MarkdownVisitors/HtmlMarkdownVisitor.cs

@@ -3,6 +3,7 @@ using System.Linq;
 using System.Net;
 using System.Text;
 using System.Text.RegularExpressions;
+using System.Threading;
 using System.Threading.Tasks;
 using DiscordChatExporter.Core.Discord.Data;
 using DiscordChatExporter.Core.Markdown;
@@ -24,13 +25,17 @@ internal partial class HtmlMarkdownVisitor : MarkdownVisitor
         _isJumbo = isJumbo;
     }
 
-    protected override async ValueTask<MarkdownNode> VisitTextAsync(TextNode text)
+    protected override async ValueTask<MarkdownNode> VisitTextAsync(
+        TextNode text,
+        CancellationToken cancellationToken = default)
     {
         _buffer.Append(HtmlEncode(text.Text));
-        return await base.VisitTextAsync(text);
+        return await base.VisitTextAsync(text, cancellationToken);
     }
 
-    protected override async ValueTask<MarkdownNode> VisitFormattingAsync(FormattingNode formatting)
+    protected override async ValueTask<MarkdownNode> VisitFormattingAsync(
+        FormattingNode formatting,
+        CancellationToken cancellationToken = default)
     {
         var (openingTag, closingTag) = formatting.Kind switch
         {
@@ -68,23 +73,27 @@ internal partial class HtmlMarkdownVisitor : MarkdownVisitor
         };
 
         _buffer.Append(openingTag);
-        var result = await base.VisitFormattingAsync(formatting);
+        var result = await base.VisitFormattingAsync(formatting, cancellationToken);
         _buffer.Append(closingTag);
 
         return result;
     }
 
-    protected override async ValueTask<MarkdownNode> VisitInlineCodeBlockAsync(InlineCodeBlockNode inlineCodeBlock)
+    protected override async ValueTask<MarkdownNode> VisitInlineCodeBlockAsync(
+        InlineCodeBlockNode inlineCodeBlock,
+        CancellationToken cancellationToken = default)
     {
         _buffer
             .Append("<code class=\"chatlog__markdown-pre chatlog__markdown-pre--inline\">")
             .Append(HtmlEncode(inlineCodeBlock.Code))
             .Append("</code>");
 
-        return await base.VisitInlineCodeBlockAsync(inlineCodeBlock);
+        return await base.VisitInlineCodeBlockAsync(inlineCodeBlock, cancellationToken);
     }
 
-    protected override async ValueTask<MarkdownNode> VisitMultiLineCodeBlockAsync(MultiLineCodeBlockNode multiLineCodeBlock)
+    protected override async ValueTask<MarkdownNode> VisitMultiLineCodeBlockAsync(
+        MultiLineCodeBlockNode multiLineCodeBlock,
+        CancellationToken cancellationToken = default)
     {
         var highlightCssClass = !string.IsNullOrWhiteSpace(multiLineCodeBlock.Language)
             ? $"language-{multiLineCodeBlock.Language}"
@@ -95,10 +104,12 @@ internal partial class HtmlMarkdownVisitor : MarkdownVisitor
             .Append(HtmlEncode(multiLineCodeBlock.Code))
             .Append("</code>");
 
-        return await base.VisitMultiLineCodeBlockAsync(multiLineCodeBlock);
+        return await base.VisitMultiLineCodeBlockAsync(multiLineCodeBlock, cancellationToken);
     }
 
-    protected override async ValueTask<MarkdownNode> VisitLinkAsync(LinkNode link)
+    protected override async ValueTask<MarkdownNode> VisitLinkAsync(
+        LinkNode link,
+        CancellationToken cancellationToken = default)
     {
         // Try to extract message ID if the link refers to a Discord message
         var linkedMessageId = Regex.Match(
@@ -112,13 +123,15 @@ internal partial class HtmlMarkdownVisitor : MarkdownVisitor
                 : $"<a href=\"{HtmlEncode(link.Url)}\">"
         );
 
-        var result = await base.VisitLinkAsync(link);
+        var result = await base.VisitLinkAsync(link, cancellationToken);
         _buffer.Append("</a>");
 
         return result;
     }
 
-    protected override async ValueTask<MarkdownNode> VisitEmojiAsync(EmojiNode emoji)
+    protected override async ValueTask<MarkdownNode> VisitEmojiAsync(
+        EmojiNode emoji,
+        CancellationToken cancellationToken = default)
     {
         var emojiImageUrl = Emoji.GetImageUrl(emoji.Id, emoji.Name, emoji.IsAnimated);
         var jumboClass = _isJumbo ? "chatlog__emoji--large" : "";
@@ -129,14 +142,16 @@ internal partial class HtmlMarkdownVisitor : MarkdownVisitor
             $"class=\"chatlog__emoji {jumboClass}\" " +
             $"alt=\"{emoji.Name}\" " +
             $"title=\"{emoji.Code}\" " +
-            $"src=\"{await _context.ResolveAssetUrlAsync(emojiImageUrl)}\"" +
+            $"src=\"{await _context.ResolveAssetUrlAsync(emojiImageUrl, cancellationToken)}\"" +
             $">"
         );
 
-        return await base.VisitEmojiAsync(emoji);
+        return await base.VisitEmojiAsync(emoji, cancellationToken);
     }
 
-    protected override async ValueTask<MarkdownNode> VisitMentionAsync(MentionNode mention)
+    protected override async ValueTask<MarkdownNode> VisitMentionAsync(
+        MentionNode mention,
+        CancellationToken cancellationToken = default)
     {
         if (mention.Kind == MentionKind.Everyone)
         {
@@ -191,10 +206,12 @@ internal partial class HtmlMarkdownVisitor : MarkdownVisitor
                 .Append("</span>");
         }
 
-        return await base.VisitMentionAsync(mention);
+        return await base.VisitMentionAsync(mention, cancellationToken);
     }
 
-    protected override async ValueTask<MarkdownNode> VisitUnixTimestampAsync(UnixTimestampNode timestamp)
+    protected override async ValueTask<MarkdownNode> VisitUnixTimestampAsync(
+        UnixTimestampNode timestamp,
+        CancellationToken cancellationToken = default)
     {
         var dateString = timestamp.Date is not null
             ? _context.FormatDate(timestamp.Date.Value)
@@ -210,7 +227,7 @@ internal partial class HtmlMarkdownVisitor : MarkdownVisitor
             .Append(HtmlEncode(dateString))
             .Append("</span>");
 
-        return await base.VisitUnixTimestampAsync(timestamp);
+        return await base.VisitUnixTimestampAsync(timestamp, cancellationToken);
     }
 }
 
@@ -221,7 +238,8 @@ internal partial class HtmlMarkdownVisitor
     public static async ValueTask<string> FormatAsync(
         ExportContext context,
         string markdown,
-        bool isJumboAllowed = true)
+        bool isJumboAllowed = true,
+        CancellationToken cancellationToken = default)
     {
         var nodes = MarkdownParser.Parse(markdown);
 
@@ -231,7 +249,8 @@ internal partial class HtmlMarkdownVisitor
 
         var buffer = new StringBuilder();
 
-        await new HtmlMarkdownVisitor(context, buffer, isJumbo).VisitAsync(nodes);
+        await new HtmlMarkdownVisitor(context, buffer, isJumbo)
+            .VisitAsync(nodes, cancellationToken);
 
         return buffer.ToString();
     }

DiscordChatExporter.Core/Exporting/Writers/MarkdownVisitors/PlainTextMarkdownVisitor.cs

@@ -1,4 +1,5 @@
 using System.Text;
+using System.Threading;
 using System.Threading.Tasks;
 using DiscordChatExporter.Core.Markdown;
 using DiscordChatExporter.Core.Markdown.Parsing;
@@ -17,13 +18,17 @@ internal partial class PlainTextMarkdownVisitor : MarkdownVisitor
         _buffer = buffer;
     }
 
-    protected override async ValueTask<MarkdownNode> VisitTextAsync(TextNode text)
+    protected override async ValueTask<MarkdownNode> VisitTextAsync(
+        TextNode text,
+        CancellationToken cancellationToken = default)
     {
         _buffer.Append(text.Text);
-        return await base.VisitTextAsync(text);
+        return await base.VisitTextAsync(text, cancellationToken);
     }
 
-    protected override async ValueTask<MarkdownNode> VisitEmojiAsync(EmojiNode emoji)
+    protected override async ValueTask<MarkdownNode> VisitEmojiAsync(
+        EmojiNode emoji,
+        CancellationToken cancellationToken = default)
     {
         _buffer.Append(
             emoji.IsCustomEmoji
@@ -31,10 +36,12 @@ internal partial class PlainTextMarkdownVisitor : MarkdownVisitor
                 : emoji.Name
         );
 
-        return await base.VisitEmojiAsync(emoji);
+        return await base.VisitEmojiAsync(emoji, cancellationToken);
     }
 
-    protected override async ValueTask<MarkdownNode> VisitMentionAsync(MentionNode mention)
+    protected override async ValueTask<MarkdownNode> VisitMentionAsync(
+        MentionNode mention,
+        CancellationToken cancellationToken = default)
     {
         if (mention.Kind == MentionKind.Everyone)
         {
@@ -70,10 +77,12 @@ internal partial class PlainTextMarkdownVisitor : MarkdownVisitor
             _buffer.Append($"@{name}");
         }
 
-        return await base.VisitMentionAsync(mention);
+        return await base.VisitMentionAsync(mention, cancellationToken);
     }
 
-    protected override async ValueTask<MarkdownNode> VisitUnixTimestampAsync(UnixTimestampNode timestamp)
+    protected override async ValueTask<MarkdownNode> VisitUnixTimestampAsync(
+        UnixTimestampNode timestamp,
+        CancellationToken cancellationToken = default)
     {
         _buffer.Append(
             timestamp.Date is not null
@@ -81,18 +90,22 @@ internal partial class PlainTextMarkdownVisitor : MarkdownVisitor
                 : "Invalid date"
         );
 
-        return await base.VisitUnixTimestampAsync(timestamp);
+        return await base.VisitUnixTimestampAsync(timestamp, cancellationToken);
     }
 }
 
 internal partial class PlainTextMarkdownVisitor
 {
-    public static async ValueTask<string> FormatAsync(ExportContext context, string markdown)
+    public static async ValueTask<string> FormatAsync(
+        ExportContext context,
+        string markdown,
+        CancellationToken cancellationToken = default)
     {
         var nodes = MarkdownParser.ParseMinimal(markdown);
         var buffer = new StringBuilder();
 
-        await new PlainTextMarkdownVisitor(context, buffer).VisitAsync(nodes);
+        await new PlainTextMarkdownVisitor(context, buffer)
+            .VisitAsync(nodes, cancellationToken);
 
         return buffer.ToString();
     }

DiscordChatExporter.Core/Exporting/Writers/PlainTextMessageWriter.cs

@@ -19,8 +19,10 @@ internal class PlainTextMessageWriter : MessageWriter
         _writer = new StreamWriter(stream);
     }
 
-    private ValueTask<string> FormatMarkdownAsync(string? markdown) =>
+    private ValueTask<string> FormatMarkdownAsync(
-        PlainTextMarkdownVisitor.FormatAsync(Context, markdown ?? "");
+        string markdown,
+        CancellationToken cancellationToken = default) =>
+        PlainTextMarkdownVisitor.FormatAsync(Context, markdown, cancellationToken);
 
     private async ValueTask WriteMessageHeaderAsync(Message message)
     {
@@ -48,7 +50,9 @@ internal class PlainTextMessageWriter : MessageWriter
         {
             cancellationToken.ThrowIfCancellationRequested();
 
-            await _writer.WriteLineAsync(await Context.ResolveAssetUrlAsync(attachment.Url, cancellationToken));
+            await _writer.WriteLineAsync(
+                await Context.ResolveAssetUrlAsync(attachment.Url, cancellationToken)
+            );
         }
 
         await _writer.WriteLineAsync();
@@ -65,24 +69,44 @@ internal class PlainTextMessageWriter : MessageWriter
             await _writer.WriteLineAsync("{Embed}");
 
             if (!string.IsNullOrWhiteSpace(embed.Author?.Name))
+            {
                 await _writer.WriteLineAsync(embed.Author.Name);
+            }
 
             if (!string.IsNullOrWhiteSpace(embed.Url))
+            {
                 await _writer.WriteLineAsync(embed.Url);
+            }
 
             if (!string.IsNullOrWhiteSpace(embed.Title))
-                await _writer.WriteLineAsync(await FormatMarkdownAsync(embed.Title));
+            {
+                await _writer.WriteLineAsync(
+                    await FormatMarkdownAsync(embed.Title, cancellationToken)
+                );
+            }
 
             if (!string.IsNullOrWhiteSpace(embed.Description))
-                await _writer.WriteLineAsync(await FormatMarkdownAsync(embed.Description));
+            {
+                await _writer.WriteLineAsync(
+                    await FormatMarkdownAsync(embed.Description, cancellationToken)
+                );
+            }
 
             foreach (var field in embed.Fields)
             {
                 if (!string.IsNullOrWhiteSpace(field.Name))
-                    await _writer.WriteLineAsync(await FormatMarkdownAsync(field.Name));
+                {
+                    await _writer.WriteLineAsync(
+                        await FormatMarkdownAsync(field.Name, cancellationToken)
+                    );
+                }
 
                 if (!string.IsNullOrWhiteSpace(field.Value))
-                    await _writer.WriteLineAsync(await FormatMarkdownAsync(field.Value));
+                {
+                    await _writer.WriteLineAsync(
+                        await FormatMarkdownAsync(field.Value, cancellationToken)
+                    );
+                }
             }
 
             if (!string.IsNullOrWhiteSpace(embed.Thumbnail?.Url))
@@ -109,7 +133,9 @@ internal class PlainTextMessageWriter : MessageWriter
             }
 
             if (!string.IsNullOrWhiteSpace(embed.Footer?.Text))
+            {
                 await _writer.WriteLineAsync(embed.Footer.Text);
+            }
 
             await _writer.WriteLineAsync();
         }
@@ -152,7 +178,9 @@ internal class PlainTextMessageWriter : MessageWriter
             await _writer.WriteAsync(reaction.Emoji.Name);
 
             if (reaction.Count > 1)
+            {
                 await _writer.WriteAsync($" ({reaction.Count})");
+            }
 
             await _writer.WriteAsync(' ');
         }
@@ -167,13 +195,19 @@ internal class PlainTextMessageWriter : MessageWriter
         await _writer.WriteLineAsync($"Channel: {Context.Request.Channel.Category.Name} / {Context.Request.Channel.Name}");
 
         if (!string.IsNullOrWhiteSpace(Context.Request.Channel.Topic))
+        {
             await _writer.WriteLineAsync($"Topic: {Context.Request.Channel.Topic}");
+        }
 
         if (Context.Request.After is not null)
+        {
             await _writer.WriteLineAsync($"After: {Context.FormatDate(Context.Request.After.Value.ToDate())}");
+        }
 
         if (Context.Request.Before is not null)
+        {
             await _writer.WriteLineAsync($"Before: {Context.FormatDate(Context.Request.Before.Value.ToDate())}");
+        }
 
         await _writer.WriteLineAsync(new string('=', 62));
         await _writer.WriteLineAsync();
@@ -190,7 +224,11 @@ internal class PlainTextMessageWriter : MessageWriter
 
         // Content
         if (!string.IsNullOrWhiteSpace(message.Content))
-            await _writer.WriteLineAsync(await FormatMarkdownAsync(message.Content));
+        {
+            await _writer.WriteLineAsync(
+                await FormatMarkdownAsync(message.Content, cancellationToken)
+            );
+        }
 
         await _writer.WriteLineAsync();
 

DiscordChatExporter.Core/Markdown/Parsing/MarkdownVisitor.cs

@@ -1,57 +1,94 @@
 using System;
 using System.Collections.Generic;
+using System.Threading;
 using System.Threading.Tasks;
 
 namespace DiscordChatExporter.Core.Markdown.Parsing;
 
 internal abstract class MarkdownVisitor
 {
-    protected virtual ValueTask<MarkdownNode> VisitTextAsync(TextNode text) => 
+    protected virtual ValueTask<MarkdownNode> VisitTextAsync(
+        TextNode text,
+        CancellationToken cancellationToken = default) =>
         new(text);
 
-    protected virtual async ValueTask<MarkdownNode> VisitFormattingAsync(FormattingNode formatting)
+    protected virtual async ValueTask<MarkdownNode> VisitFormattingAsync(
+        FormattingNode formatting,
+        CancellationToken cancellationToken = default)
     {
-        await VisitAsync(formatting.Children);
+        await VisitAsync(formatting.Children, cancellationToken);
         return formatting;
     }
 
-    protected virtual ValueTask<MarkdownNode> VisitInlineCodeBlockAsync(InlineCodeBlockNode inlineCodeBlock) => 
+    protected virtual ValueTask<MarkdownNode> VisitInlineCodeBlockAsync(
+        InlineCodeBlockNode inlineCodeBlock,
+        CancellationToken cancellationToken = default) =>
         new(inlineCodeBlock);
 
-    protected virtual ValueTask<MarkdownNode> VisitMultiLineCodeBlockAsync(MultiLineCodeBlockNode multiLineCodeBlock) => 
+    protected virtual ValueTask<MarkdownNode> VisitMultiLineCodeBlockAsync(
+        MultiLineCodeBlockNode multiLineCodeBlock,
+        CancellationToken cancellationToken = default) =>
         new(multiLineCodeBlock);
 
-    protected virtual async ValueTask<MarkdownNode> VisitLinkAsync(LinkNode link)
+    protected virtual async ValueTask<MarkdownNode> VisitLinkAsync(
+        LinkNode link,
+        CancellationToken cancellationToken = default)
     {
-        await VisitAsync(link.Children);
+        await VisitAsync(link.Children, cancellationToken);
         return link;
     }
 
-    protected virtual ValueTask<MarkdownNode> VisitEmojiAsync(EmojiNode emoji) => 
+    protected virtual ValueTask<MarkdownNode> VisitEmojiAsync(
+        EmojiNode emoji,
+        CancellationToken cancellationToken = default) =>
         new(emoji);
 
-    protected virtual ValueTask<MarkdownNode> VisitMentionAsync(MentionNode mention) => 
+    protected virtual ValueTask<MarkdownNode> VisitMentionAsync(
+        MentionNode mention,
+        CancellationToken cancellationToken = default) =>
         new(mention);
 
-    protected virtual ValueTask<MarkdownNode> VisitUnixTimestampAsync(UnixTimestampNode timestamp) => 
+    protected virtual ValueTask<MarkdownNode> VisitUnixTimestampAsync(
+        UnixTimestampNode timestamp,
+        CancellationToken cancellationToken = default) =>
         new(timestamp);
 
-    public async ValueTask<MarkdownNode> VisitAsync(MarkdownNode node) => node switch
+    public async ValueTask<MarkdownNode> VisitAsync(
-    {
+        MarkdownNode node,
-        TextNode text => await VisitTextAsync(text),
+        CancellationToken cancellationToken = default) => node switch
-        FormattingNode formatting => await VisitFormattingAsync(formatting),
+        {
-        InlineCodeBlockNode inlineCodeBlock => await VisitInlineCodeBlockAsync(inlineCodeBlock),
+            TextNode text =>
-        MultiLineCodeBlockNode multiLineCodeBlock => await VisitMultiLineCodeBlockAsync(multiLineCodeBlock),
+                await VisitTextAsync(text, cancellationToken),
-        LinkNode link => await VisitLinkAsync(link),
-        EmojiNode emoji => await VisitEmojiAsync(emoji),
-        MentionNode mention => await VisitMentionAsync(mention),
-        UnixTimestampNode timestamp => await VisitUnixTimestampAsync(timestamp),
-        _ => throw new ArgumentOutOfRangeException(nameof(node))
-    };
 
-    public async ValueTask VisitAsync(IEnumerable<MarkdownNode> nodes)
+            FormattingNode formatting =>
+                await VisitFormattingAsync(formatting, cancellationToken),
+
+            InlineCodeBlockNode inlineCodeBlock =>
+                await VisitInlineCodeBlockAsync(inlineCodeBlock, cancellationToken),
+
+            MultiLineCodeBlockNode multiLineCodeBlock =>
+                await VisitMultiLineCodeBlockAsync(multiLineCodeBlock, cancellationToken),
+
+            LinkNode link =>
+                await VisitLinkAsync(link, cancellationToken),
+
+            EmojiNode emoji =>
+                await VisitEmojiAsync(emoji, cancellationToken),
+
+            MentionNode mention =>
+                await VisitMentionAsync(mention, cancellationToken),
+
+            UnixTimestampNode timestamp =>
+                await VisitUnixTimestampAsync(timestamp, cancellationToken),
+
+            _ => throw new ArgumentOutOfRangeException(nameof(node))
+        };
+
+    public async ValueTask VisitAsync(
+        IEnumerable<MarkdownNode> nodes,
+        CancellationToken cancellationToken = default)
     {
         foreach (var node in nodes)
-            await VisitAsync(node);
+            await VisitAsync(node, cancellationToken);
     }
 }

DiscordChatExporter.Core/Utils/Extensions/ExceptionExtensions.cs

@@ -1,9 +1,5 @@
 using System;
 using System.Collections.Generic;
-using System.Globalization;
-using System.Net;
-using System.Net.Http;
-using System.Text.RegularExpressions;
 
 namespace DiscordChatExporter.Core.Utils.Extensions;
 
@@ -32,13 +28,4 @@ public static class ExceptionExtensions
         PopulateChildren(exception, children);
         return children;
     }
-
-    public static HttpStatusCode? TryGetStatusCode(this HttpRequestException ex) =>
-        // This is extremely frail, but there's no other way
-        Regex
-            .Match(ex.Message, @": (\d+) \(")
-            .Groups[1]
-            .Value
-            .NullIfWhiteSpace()?
-            .Pipe(s => (HttpStatusCode) int.Parse(s, CultureInfo.InvariantCulture));
 }

DiscordChatExporter.Core/Utils/Extensions/HttpExtensions.cs

@@ -1,11 +1,24 @@
-using System.Net.Http.Headers;
+using System.Globalization;
+using System.Net;
+using System.Net.Http;
+using System.Net.Http.Headers;
+using System.Text.RegularExpressions;
 
 namespace DiscordChatExporter.Core.Utils.Extensions;
 
 public static class HttpExtensions
 {
-    public static string? TryGetValue(this HttpContentHeaders headers, string name) =>
+    public static string? TryGetValue(this HttpHeaders headers, string name) =>
         headers.TryGetValues(name, out var values)
             ? string.Concat(values)
             : null;
+
+    public static HttpStatusCode? TryGetStatusCode(this HttpRequestException ex) =>
+        // This is extremely frail, but there's no other way
+        Regex
+            .Match(ex.Message, @": (\d+) \(")
+            .Groups[1]
+            .Value
+            .NullIfWhiteSpace()?
+            .Pipe(s => (HttpStatusCode) int.Parse(s, CultureInfo.InvariantCulture));
 }

DiscordChatExporter.Core/Utils/Extensions/TimeSpanExtensions.cs

@@ -0,0 +1,17 @@
+using System;
+
+namespace DiscordChatExporter.Core.Utils.Extensions;
+
+public static class TimeSpanExtensions
+{
+    public static TimeSpan Clamp(this TimeSpan value, TimeSpan min, TimeSpan max)
+    {
+        if (value < min)
+            return min;
+
+        if (value > max)
+            return max;
+
+        return value;
+    }
+}

DiscordChatExporter.Core/Utils/Http.cs

@@ -39,18 +39,11 @@ public static class Http
                 8,
                 (i, result, _) =>
                 {
-                    // If rate-limited, use retry-after as a guide
+                    // If rate-limited, use retry-after header as the guide
-                    if (result.Result?.StatusCode == HttpStatusCode.TooManyRequests)
+                    if (result.Result.Headers.RetryAfter?.Delta is { } retryAfter)
                     {
-                        // Only start respecting retry-after after a few attempts, because
+                        // Add some buffer just in case
-                        // Discord often sends unreasonable (20+ minutes) retry-after
+                        return retryAfter + TimeSpan.FromSeconds(1);
-                        // on the very first request.
-                        if (i > 3)
-                        {
-                            var retryAfterDelay = result.Result.Headers.RetryAfter?.Delta;
-                            if (retryAfterDelay is not null)
-                                return retryAfterDelay.Value + TimeSpan.FromSeconds(1); // margin just in case
-                        }
                     }
 
                     return TimeSpan.FromSeconds(Math.Pow(2, i) + 1);

DiscordChatExporter.Core/Utils/PathEx.cs

@@ -1,5 +1,6 @@
 using System.Collections.Generic;
 using System.IO;
+using System.Runtime.InteropServices;
 using System.Text;
 
 namespace DiscordChatExporter.Core.Utils;
@@ -15,6 +16,14 @@ public static class PathEx
         foreach (var c in path)
             buffer.Append(!InvalidFileNameChars.Contains(c) ? c : '_');
 
+        // File names cannot end with a dot on Windows
+        // https://github.com/Tyrrrz/DiscordChatExporter/issues/977
+        if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
+        {
+            while (buffer.Length > 0 && buffer[^1] == '.')
+                buffer.Remove(buffer.Length - 1, 1);
+        }
+
         return buffer.ToString();
     }
 

DiscordChatExporter.Gui/Bootstrapper.cs

@@ -9,37 +9,41 @@ using System.Windows;
 using System.Windows.Threading;
 #endif
 
-namespace DiscordChatExporter.Gui
+namespace DiscordChatExporter.Gui;
+
+public class Bootstrapper : Bootstrapper<RootViewModel>
 {
-    public class Bootstrapper : Bootstrapper<RootViewModel>
+    protected override void OnStart()
     {
-        protected override void OnStart()
+        base.OnStart();
-        {
-            base.OnStart();
 
-            // Set default theme
+        // Set default theme
-            // (preferred theme will be chosen later, once the settings are loaded)
+        // (preferred theme will be set later, once the settings are loaded)
-            App.SetLightTheme();
+        App.SetLightTheme();
-        }
+    }
 
-        protected override void ConfigureIoC(IStyletIoCBuilder builder)
+    protected override void ConfigureIoC(IStyletIoCBuilder builder)
-        {
+    {
-            base.ConfigureIoC(builder);
+        base.ConfigureIoC(builder);
 
-            // Bind settings as singleton
+        // Bind settings as singleton
-            builder.Bind<SettingsService>().ToSelf().InSingletonScope();
+        builder.Bind<SettingsService>().ToSelf().InSingletonScope();
 
-            // Bind view model factory
+        // Bind view model factory
-            builder.Bind<IViewModelFactory>().ToAbstractFactory();
+        builder.Bind<IViewModelFactory>().ToAbstractFactory();
-        }
+    }
 
 #if !DEBUG
-        protected override void OnUnhandledException(DispatcherUnhandledExceptionEventArgs e)
+    protected override void OnUnhandledException(DispatcherUnhandledExceptionEventArgs e)
-        {
+    {
-            base.OnUnhandledException(e);
+        base.OnUnhandledException(e);
 
-            MessageBox.Show(e.Exception.ToString(), "Error occured", MessageBoxButton.OK, MessageBoxImage.Error);
+        MessageBox.Show(
-        }
+            e.Exception.ToString(),
-#endif
+            "Error occured",
+            MessageBoxButton.OK,
+            MessageBoxImage.Error
+        );
     }
+#endif
 }

DiscordChatExporter.Gui/DiscordChatExporter.Gui.csproj

@@ -1,8 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>$(TargetFramework)-windows</TargetFramework>
     <OutputType>WinExe</OutputType>
+    <TargetFramework>$(TargetFramework)-windows</TargetFramework>
     <AssemblyName>DiscordChatExporter</AssemblyName>
     <UseWPF>true</UseWPF>
     <ApplicationIcon>../favicon.ico</ApplicationIcon>
@@ -18,11 +18,11 @@
     <PackageReference Include="MaterialDesignThemes" Version="4.6.1" />
     <PackageReference Include="Microsoft.Xaml.Behaviors.Wpf" Version="1.1.39" />
     <PackageReference Include="Ookii.Dialogs.Wpf" Version="5.0.1" />
-    <PackageReference Include="Onova" Version="2.6.2" />
+    <PackageReference Include="Onova" Version="2.6.3" />
     <PackageReference Include="Stylet" Version="1.3.6" />
     <PackageReference Include="Tyrrrz.Settings" Version="1.3.4" />
-    <PackageReference Include="PropertyChanged.Fody" Version="4.0.5" PrivateAssets="all" />
+    <PackageReference Include="PropertyChanged.Fody" Version="4.1.0" PrivateAssets="all" />
-    <PackageReference Include="DotnetRuntimeBootstrapper" Version="2.3.1" PrivateAssets="all" />
+    <PackageReference Include="DotnetRuntimeBootstrapper" Version="2.4.0" PrivateAssets="all" />
   </ItemGroup>
 
   <ItemGroup>

DiscordChatExporter.Gui/Sanctions.cs

@@ -0,0 +1,48 @@
+using System;
+using System.Globalization;
+using System.Runtime.CompilerServices;
+using System.Windows;
+using Microsoft.Win32;
+
+namespace DiscordChatExporter.Gui;
+
+public static class Sanctions
+{
+    [ModuleInitializer]
+    internal static void Verify()
+    {
+        var isSkipped = string.Equals(
+            Environment.GetEnvironmentVariable("RUSNI"),
+            "PYZDA",
+            StringComparison.OrdinalIgnoreCase
+        );
+
+        if (isSkipped)
+            return;
+
+        var locale = CultureInfo.CurrentCulture.Name;
+
+        var region = Registry.CurrentUser
+            .OpenSubKey(@"Control Panel\International\Geo", false)?
+            .GetValue("Name") as string;
+
+        var isSanctioned =
+            locale.EndsWith("-ru", StringComparison.OrdinalIgnoreCase) ||
+            locale.EndsWith("-by", StringComparison.OrdinalIgnoreCase) ||
+            string.Equals(region, "ru", StringComparison.OrdinalIgnoreCase) ||
+            string.Equals(region, "by", StringComparison.OrdinalIgnoreCase);
+
+        if (!isSanctioned)
+            return;
+
+        MessageBox.Show(
+            "You cannot use this software on the territory of a terrorist state. " +
+            "Set the environment variable `RUSNI=PYZDA` if you wish to override this check.",
+            "Sanctioned region",
+            MessageBoxButton.OK,
+            MessageBoxImage.Error
+        );
+
+        Environment.Exit(0xFACC);
+    }
+}

DiscordChatExporter.Gui/Services/SettingsService.cs

@@ -6,6 +6,8 @@ namespace DiscordChatExporter.Gui.Services;
 
 public partial class SettingsService : SettingsManager
 {
+    public bool IsUkraineSupportMessageEnabled { get; set; } = true;
+
     public bool IsAutoUpdateEnabled { get; set; } = true;
 
     public bool IsDarkModeEnabled { get; set; } = IsDarkModeEnabledByDefault();

DiscordChatExporter.Gui/ViewModels/Framework/DialogManager.cs

@@ -27,7 +27,15 @@ public class DialogManager : IDisposable
         {
             void OnScreenClosed(object? closeSender, EventArgs args)
             {
-                openArgs.Session.Close();
+                try
+                {
+                    openArgs.Session.Close();
+                }
+                catch (InvalidOperationException)
+                {
+                    // Race condition: dialog is already being closed
+                }
+
                 dialogScreen.Closed -= OnScreenClosed;
             }
             dialogScreen.Closed += OnScreenClosed;

DiscordChatExporter.Gui/ViewModels/RootViewModel.cs

@@ -17,9 +17,9 @@ public class RootViewModel : Screen, IHandle<NotificationMessage>, IDisposable
     private readonly DialogManager _dialogManager;
     private readonly SettingsService _settingsService;
     private readonly UpdateService _updateService;
-    
+
     public SnackbarMessageQueue Notifications { get; } = new(TimeSpan.FromSeconds(5));
-    
+
     public DashboardViewModel Dashboard { get; }
 
     public RootViewModel(
@@ -33,31 +33,40 @@ public class RootViewModel : Screen, IHandle<NotificationMessage>, IDisposable
         _dialogManager = dialogManager;
         _settingsService = settingsService;
         _updateService = updateService;
-        
+
         eventAggregator.Subscribe(this);
-        
+
         Dashboard = _viewModelFactory.CreateDashboardViewModel();
 
         DisplayName = $"{App.Name} v{App.VersionString}";
     }
 
-    private async Task ShowWarInUkraineMessageAsync()
+    private async Task ShowUkraineSupportMessageAsync()
     {
-        var dialog = _viewModelFactory.CreateMessageBoxViewModel(
+        if (!_settingsService.IsUkraineSupportMessageEnabled)
-            "Ukraine is at war!", @"
+            return;
-My country, Ukraine, has been invaded by Russian military forces in an act of aggression that can only be described as genocide.
-Be on the right side of history! Consider supporting Ukraine in its fight for freedom.
 
-Press LEARN MORE to find ways that you can help.".Trim(),
+        var dialog = _viewModelFactory.CreateMessageBoxViewModel(
-            "LEARN MORE", "CLOSE"
+            "Thank you for supporting Ukraine!",
+            """
+            As Russia wages a genocidal war against my country, I'm grateful to everyone who continues to stand with Ukraine in our fight for freedom.
+
+            Click LEARN MORE to find ways that you can help.
+            """,
+            "LEARN MORE",
+            "CANCEL"
         );
 
+        // Disable this message in the future
+        _settingsService.IsUkraineSupportMessageEnabled = false;
+        _settingsService.Save();
+
         if (await _dialogManager.ShowDialogAsync(dialog) == true)
         {
-            ProcessEx.StartShellExecute("https://tyrrrz.me");
+            ProcessEx.StartShellExecute("https://tyrrrz.me/ukraine?source=discordchatexporter");
         }
     }
-    
+
     private async ValueTask CheckForUpdatesAsync()
     {
         try
@@ -84,10 +93,10 @@ Press LEARN MORE to find ways that you can help.".Trim(),
             Notifications.Enqueue("Failed to perform application update");
         }
     }
-    
+
     public async void OnViewFullyLoaded()
     {
-        await ShowWarInUkraineMessageAsync();
+        await ShowUkraineSupportMessageAsync();
         await CheckForUpdatesAsync();
     }
 
@@ -115,7 +124,7 @@ Press LEARN MORE to find ways that you can help.".Trim(),
         _updateService.FinalizeUpdate(false);
     }
 
-    public void Handle(NotificationMessage message) => 
+    public void Handle(NotificationMessage message) =>
         Notifications.Enqueue(message.Text);
 
     public void Dispose() => Notifications.Dispose();

DiscordChatExporter.Gui/Views/Components/DashboardView.xaml

@@ -181,7 +181,7 @@
                         <LineBreak />
                         <Run Text="7. Select the" />
                         <Run FontWeight="SemiBold" Text="Headers" />
-                        <Run Text=" tab on the right" />
+                        <Run Text="tab on the right" />
                         <LineBreak />
                         <Run Text="8. Scroll down to the" />
                         <Run FontWeight="SemiBold" Text="Request Headers" />

License.txt

@@ -1,5 +1,5 @@
  DiscordChatExporter
- Copyright (C) 2017-2022 Oleksii Holub
+ Copyright (C) 2017-2023 Oleksii Holub
 
  This program is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by

Readme.md

@@ -1,7 +1,7 @@
 # DiscordChatExporter
 
 [![Made in Ukraine](https://img.shields.io/badge/made_in-ukraine-ffd700.svg?labelColor=0057b7)](https://vshymanskyy.github.io/StandWithUkraine)
-[![Build](https://img.shields.io/github/workflow/status/Tyrrrz/DiscordChatExporter/main/master)](https://github.com/Tyrrrz/DiscordChatExporter/actions)
+[![Build](https://img.shields.io/github/actions/workflow/status/Tyrrrz/DiscordChatExporter/main.yml?branch=master)](https://github.com/Tyrrrz/DiscordChatExporter/actions)
 [![Coverage](https://img.shields.io/codecov/c/github/Tyrrrz/DiscordChatExporter/master)](https://codecov.io/gh/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)
@@ -84,12 +84,12 @@ The following table lists all available download options:
 > If you have any issues with them, please contact the corresponding maintainers.
 
 > **Warning**:
-> To run **DiscordChatExporter** on macOS and Linux, you need to make sure that **.NET Runtime v6** is installed.
+> To run **DiscordChatExporter** on macOS and Linux, you need to make sure that **.NET 7.0 Runtime** is installed.
 > You can download it here:
 >
-> - [.NET Runtime v6 for **macOS x64**](https://dotnet.microsoft.com/en-us/download/dotnet/thank-you/runtime-6.0.6-macos-x64-installer)
+> - [.NET 7.0 Runtime for **macOS x64**](https://dotnet.microsoft.com/en-us/download/dotnet/thank-you/sdk-7.0.101-macos-x64-installer)
-> - [.NET Runtime v6 for **macOS Arm64**](https://dotnet.microsoft.com/en-us/download/dotnet/thank-you/runtime-6.0.6-macos-arm64-installer)
+> - [.NET 7.0 Runtime for **macOS Arm64**](https://dotnet.microsoft.com/en-us/download/dotnet/thank-you/sdk-7.0.101-macos-arm64-installer)
-> - [.NET Runtime v6 for **Linux**](https://docs.microsoft.com/en-us/dotnet/core/install/linux) (find the correct download for your distro)
+> - [.NET 7.0 Runtime for **Linux**](https://docs.microsoft.com/en-us/dotnet/core/install/linux) (find the correct download for your distro)
 >
 > This should not be necessary if you install **DiscordChatExporter** using a package manager, as it should take care of the dependencies for you.
 > This is also not necessary if you are running **DiscordChatExporter** via Docker, because the image already contains the runtime.