Update version

Fixes #756

Changelog.md

@@ -1,4 +1,14 @@
-### v2.32 (15-Dec-2021)
+### v2.33 (06-Mar-2022)
+
+- Added messages informing about war in Ukraine and available ways to help.
+- Added support for rendering stickers in HTML and JSON. Lottie-based stickers currently cannot be displayed in HTML exports (see [#803](https://github.com/Tyrrrz/DiscordChatExporter/issues/803)).
+- Added a new `reaction:` message filter which can be used to check if someone reacted to a message with a specific emoji. You can either pass the emoji name (e.g. `reaction:LUL`) or its ID (e.g. `reaction:41771983429993937`).
+- [GUI] Added auto-detection for dark mode. If your system is configured to prefer dark mode in applications, DiscordChatExporter will use it by default instead of light mode.
+- Fixed an issue which caused the export process to crash when downloading media files with extremely long file extensions. (Thanks [@Tomlacko](https://github.com/Tomlacko))
+- Fixed an issue which caused the export process to crash on invalid mentions.
+- [GUI] Fixed an issue where the time pickers used to specify export ranges always displayed time in 12-hour format, instead of respecting the system locale.
+
+### v2.32 (27-Jan-2022)
 
 - Token kind (user or bot) is now detected automatically. Removed the button to switch token kind in GUI. Option `-b|--bot` in CLI is now deprecated and does nothing.
 - Updated user token extraction guide to reflect the fact that devtools are no longer accessible in the desktop version of Discord client. The recommended workaround is to open Discord in browser. (Thanks [@Dhananjay-JSR](https://github.com/Dhananjay-JSR))

Directory.Build.props

@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <TargetFramework>net6.0</TargetFramework>
-    <Version>2.32</Version>
+    <Version>2.33</Version>
     <Company>Tyrrrz</Company>
     <Copyright>Copyright (c) Oleksii Holub</Copyright>
     <LangVersion>preview</LangVersion>

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

@@ -15,11 +15,11 @@
   
   <ItemGroup>
     <PackageReference Include="AngleSharp" Version="0.16.1" />
-    <PackageReference Include="FluentAssertions" Version="6.4.0" />
-    <PackageReference Include="GitHubActionsTestLogger" Version="1.2.0" />
+    <PackageReference Include="FluentAssertions" Version="6.5.1" />
+    <PackageReference Include="GitHubActionsTestLogger" Version="1.3.0" PrivateAssets="all" />
     <PackageReference Include="JsonExtensions" Version="1.2.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.0.0" />
-    <PackageReference Include="coverlet.msbuild" Version="3.1.0" PrivateAssets="all" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.1.0" />
+    <PackageReference Include="coverlet.msbuild" Version="3.1.2" PrivateAssets="all" />
     <PackageReference Include="System.Reactive" Version="5.0.0" />
     <PackageReference Include="xunit" Version="2.4.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3" PrivateAssets="all" />

DiscordChatExporter.Cli.Tests/Specs/HtmlWriting/StickerSpecs.cs

@@ -0,0 +1,45 @@
+using System.Threading.Tasks;
+using DiscordChatExporter.Cli.Tests.Fixtures;
+using DiscordChatExporter.Cli.Tests.TestData;
+using DiscordChatExporter.Core.Discord;
+using FluentAssertions;
+using Xunit;
+
+namespace DiscordChatExporter.Cli.Tests.Specs.HtmlWriting;
+
+public record StickerSpecs(ExportWrapperFixture ExportWrapper) : IClassFixture<ExportWrapperFixture>
+{
+    [Fact]
+    public async Task Message_with_a_PNG_based_sticker_is_rendered_correctly()
+    {
+        // Act
+        var message = await ExportWrapper.GetMessageAsHtmlAsync(
+            ChannelIds.StickerTestCases,
+            Snowflake.Parse("939670623158943754")
+        );
+
+        var container = message.QuerySelector("[title='rock']");
+        var sourceUrl = container?.QuerySelector("img")?.GetAttribute("src");
+
+        // Assert
+        container.Should().NotBeNull();
+        sourceUrl.Should().Be("https://discord.com/stickers/904215665597120572.png");
+    }
+
+    [Fact]
+    public async Task Message_with_a_Lottie_based_sticker_is_rendered_correctly()
+    {
+        // Act
+        var message = await ExportWrapper.GetMessageAsHtmlAsync(
+            ChannelIds.StickerTestCases,
+            Snowflake.Parse("939670526517997590")
+        );
+
+        var container = message.QuerySelector("[title='Yikes']");
+        var sourceUrl = container?.QuerySelector("div[data-source]")?.GetAttribute("data-source");
+
+        // Assert
+        container.Should().NotBeNull();
+        sourceUrl.Should().Be("https://discord.com/stickers/816087132447178774.json");
+    }
+}

DiscordChatExporter.Cli.Tests/Specs/JsonWriting/StickerSpecs.cs

@@ -0,0 +1,54 @@
+using System.Linq;
+using System.Threading.Tasks;
+using DiscordChatExporter.Cli.Tests.Fixtures;
+using DiscordChatExporter.Cli.Tests.TestData;
+using DiscordChatExporter.Core.Discord;
+using FluentAssertions;
+using Xunit;
+
+namespace DiscordChatExporter.Cli.Tests.Specs.JsonWriting;
+
+public record StickerSpecs(ExportWrapperFixture ExportWrapper) : IClassFixture<ExportWrapperFixture>
+{
+    [Fact]
+    public async Task Message_with_a_PNG_based_sticker_is_rendered_correctly()
+    {
+        // Act
+        var message = await ExportWrapper.GetMessageAsJsonAsync(
+            ChannelIds.StickerTestCases,
+            Snowflake.Parse("939670623158943754")
+        );
+
+        var sticker = message
+            .GetProperty("stickers")
+            .EnumerateArray()
+            .Single();
+
+        // Assert
+        sticker.GetProperty("id").GetString().Should().Be("904215665597120572");
+        sticker.GetProperty("name").GetString().Should().Be("rock");
+        sticker.GetProperty("format").GetString().Should().Be("PngAnimated");
+        sticker.GetProperty("sourceUrl").GetString().Should().Be("https://discord.com/stickers/904215665597120572.png");
+    }
+
+    [Fact]
+    public async Task Message_with_a_Lottie_based_sticker_is_rendered_correctly()
+    {
+        // Act
+        var message = await ExportWrapper.GetMessageAsJsonAsync(
+            ChannelIds.StickerTestCases,
+            Snowflake.Parse("939670526517997590")
+        );
+
+        var sticker = message
+            .GetProperty("stickers")
+            .EnumerateArray()
+            .Single();
+
+        // Assert
+        sticker.GetProperty("id").GetString().Should().Be("816087132447178774");
+        sticker.GetProperty("name").GetString().Should().Be("Yikes");
+        sticker.GetProperty("format").GetString().Should().Be("Lottie");
+        sticker.GetProperty("sourceUrl").GetString().Should().Be("https://discord.com/stickers/816087132447178774.json");
+    }
+}

DiscordChatExporter.Cli.Tests/Specs/PartitioningSpecs.cs

@@ -59,6 +59,6 @@ public record PartitioningSpecs(TempOutputFixture TempOutput) : IClassFixture<Te
         // Assert
         Directory.EnumerateFiles(dirPath, fileNameWithoutExt + "*")
             .Should()
-            .HaveCount(2);
+            .HaveCount(3);
     }
 }

DiscordChatExporter.Cli.Tests/TestData/ChannelIds.cs

@@ -10,6 +10,8 @@ public static class ChannelIds
 
     public static Snowflake EmbedTestCases { get; } = Snowflake.Parse("866472452459462687");
 
+    public static Snowflake StickerTestCases { get; } = Snowflake.Parse("939668868253769729");
+
     public static Snowflake FilterTestCases { get; } = Snowflake.Parse("866744075033641020");
 
     public static Snowflake MentionTestCases { get; } = Snowflake.Parse("866458801389174794");

DiscordChatExporter.Cli/Commands/Base/ExportCommandBase.cs

@@ -14,6 +14,7 @@ using DiscordChatExporter.Core.Exceptions;
 using DiscordChatExporter.Core.Exporting;
 using DiscordChatExporter.Core.Exporting.Filtering;
 using DiscordChatExporter.Core.Exporting.Partitioning;
+using Gress;
 
 namespace DiscordChatExporter.Cli.Commands.Base;
 
@@ -78,8 +79,7 @@ public abstract class ExportCommandBase : TokenCommandBase
                 {
                     try
                     {
-                        await progressContext.StartTaskAsync(
-                            $"{channel.Category.Name} / {channel.Name}",
+                        await progressContext.StartTaskAsync($"{channel.Category.Name} / {channel.Name}",
                             async progress =>
                             {
                                 var guild = await Discord.GetGuildAsync(channel.GuildId, innerCancellationToken);
@@ -98,7 +98,11 @@ public abstract class ExportCommandBase : TokenCommandBase
                                     DateFormat
                                 );
 
-                                await Exporter.ExportChannelAsync(request, progress, innerCancellationToken);
+                                await Exporter.ExportChannelAsync(
+                                    request,
+                                    progress.ToPercentageBased(),
+                                    innerCancellationToken
+                                );
                             }
                         );
                     }
@@ -162,4 +166,16 @@ public abstract class ExportCommandBase : TokenCommandBase
 
         await ExecuteAsync(console, channels);
     }
+
+    public override ValueTask ExecuteAsync(IConsole console)
+    {
+        // War in Ukraine message
+        console.Output.WriteLine("==================================================");
+        console.Output.WriteLine("⚠ UKRAINE IS AT WAR!");
+        console.Output.WriteLine("LEARN MORE & HELP: https://tyrrrz.me");
+        console.Output.WriteLine("==================================================");
+        console.Output.WriteLine("");
+
+        return default;
+    }
 }

DiscordChatExporter.Cli/Commands/ExportAllCommand.cs

@@ -15,6 +15,8 @@ public class ExportAllCommand : ExportCommandBase
 
     public override async ValueTask ExecuteAsync(IConsole console)
     {
+        await base.ExecuteAsync(console);
+
         var cancellationToken = console.RegisterCancellationHandler();
         var channels = new List<Channel>();
 

DiscordChatExporter.Cli/Commands/ExportChannelsCommand.cs

@@ -15,6 +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 override async ValueTask ExecuteAsync(IConsole console) =>
+    public override async ValueTask ExecuteAsync(IConsole console)
+    {
+        await base.ExecuteAsync(console);
         await base.ExecuteAsync(console, ChannelIds);
+    }
 }

DiscordChatExporter.Cli/Commands/ExportDirectMessagesCommand.cs

@@ -13,6 +13,8 @@ public class ExportDirectMessagesCommand : ExportCommandBase
 {
     public override async ValueTask ExecuteAsync(IConsole console)
     {
+        await base.ExecuteAsync(console);
+
         var cancellationToken = console.RegisterCancellationHandler();
 
         await console.Output.WriteLineAsync("Fetching channels...");

DiscordChatExporter.Cli/Commands/ExportGuildCommand.cs

@@ -16,6 +16,8 @@ public class ExportGuildCommand : ExportCommandBase
 
     public override async ValueTask ExecuteAsync(IConsole console)
     {
+        await base.ExecuteAsync(console);
+
         var cancellationToken = console.RegisterCancellationHandler();
 
         await console.Output.WriteLineAsync("Fetching channels...");

DiscordChatExporter.Cli/DiscordChatExporter.Cli.csproj

@@ -6,9 +6,9 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="CliFx" Version="2.2.1" />
+    <PackageReference Include="CliFx" Version="2.2.2" />
     <PackageReference Include="Spectre.Console" Version="0.43.0" />
-    <PackageReference Include="Gress" Version="1.2.0" />
+    <PackageReference Include="Gress" Version="2.0.1" />
   </ItemGroup>
 
   <ItemGroup>

DiscordChatExporter.Core/Discord/Data/Emoji.cs

@@ -10,14 +10,14 @@ namespace DiscordChatExporter.Core.Discord.Data;
 // https://discord.com/developers/docs/resources/emoji#emoji-object
 public partial record Emoji(
     // Only present on custom emoji
-    string? Id,
+    Snowflake? Id,
     // Name of custom emoji (e.g. LUL) or actual representation of standard emoji (e.g. 🙂)
     string Name,
     bool IsAnimated,
     string ImageUrl)
 {
     // Name of custom emoji (e.g. LUL) or name of standard emoji (e.g. slight_smile)
-    public string Code => !string.IsNullOrWhiteSpace(Id)
+    public string Code => Id is not null
         ? Name
         : EmojiIndex.TryGetCode(Name) ?? Name;
 }
@@ -32,18 +32,18 @@ public partial record Emoji
             .Select(r => r.Value.ToString("x"))
     );
 
-    private static string GetImageUrl(string id, bool isAnimated) => isAnimated
+    private static string GetImageUrl(Snowflake id, bool isAnimated) => isAnimated
         ? $"https://cdn.discordapp.com/emojis/{id}.gif"
         : $"https://cdn.discordapp.com/emojis/{id}.png";
 
     private static string GetImageUrl(string name) =>
         $"https://twemoji.maxcdn.com/2/svg/{GetTwemojiName(name)}.svg";
 
-    public static string GetImageUrl(string? id, string? name, bool isAnimated)
+    public static string GetImageUrl(Snowflake? id, string? name, bool isAnimated)
     {
         // Custom emoji
-        if (!string.IsNullOrWhiteSpace(id))
-            return GetImageUrl(id, isAnimated);
+        if (id is not null)
+            return GetImageUrl(id.Value, isAnimated);
 
         // Standard emoji
         if (!string.IsNullOrWhiteSpace(name))
@@ -55,7 +55,7 @@ public partial record Emoji
 
     public static Emoji Parse(JsonElement json)
     {
-        var id = json.GetPropertyOrNull("id")?.GetNonWhiteSpaceStringOrNull();
+        var id = json.GetPropertyOrNull("id")?.GetNonWhiteSpaceStringOrNull()?.Pipe(Snowflake.Parse);
         var name = json.GetPropertyOrNull("name")?.GetNonWhiteSpaceStringOrNull();
         var isAnimated = json.GetPropertyOrNull("animated")?.GetBooleanOrNull() ?? false;
 

DiscordChatExporter.Core/Discord/Data/Message.cs

@@ -21,6 +21,7 @@ public record Message(
     string Content,
     IReadOnlyList<Attachment> Attachments,
     IReadOnlyList<Embed> Embeds,
+    IReadOnlyList<Sticker> Stickers,
     IReadOnlyList<Reaction> Reactions,
     IReadOnlyList<User> MentionedUsers,
     MessageReference? Reference,
@@ -60,6 +61,10 @@ public record Message(
             json.GetPropertyOrNull("embeds")?.EnumerateArrayOrNull()?.Select(Embed.Parse).ToArray() ??
             Array.Empty<Embed>();
 
+        var stickers =
+            json.GetPropertyOrNull("sticker_items")?.EnumerateArrayOrNull()?.Select(Sticker.Parse).ToArray() ??
+            Array.Empty<Sticker>();
+
         var reactions =
             json.GetPropertyOrNull("reactions")?.EnumerateArrayOrNull()?.Select(Reaction.Parse).ToArray() ??
             Array.Empty<Reaction>();
@@ -79,6 +84,7 @@ public record Message(
             content,
             attachments,
             embeds,
+            stickers,
             reactions,
             mentionedUsers,
             messageReference,

DiscordChatExporter.Core/Discord/Data/Sticker.cs

@@ -0,0 +1,25 @@
+using System.Text.Json;
+using DiscordChatExporter.Core.Utils.Extensions;
+using JsonExtensions.Reading;
+
+namespace DiscordChatExporter.Core.Discord.Data;
+
+public record Sticker(Snowflake Id, string Name, StickerFormat Format, string SourceUrl)
+{
+    private static string GetSourceUrl(Snowflake id, StickerFormat format)
+    {
+        var extension = format == StickerFormat.Lottie ? "json" : "png";
+        return $"https://discord.com/stickers/{id}.{extension}";
+    }
+
+    public static Sticker Parse(JsonElement json)
+    {
+        var id = json.GetProperty("id").GetNonWhiteSpaceString().Pipe(Snowflake.Parse);
+        var name = json.GetProperty("name").GetNonWhiteSpaceString();
+        var format = (StickerFormat)json.GetProperty("format_type").GetInt32();
+
+        var sourceUrl = GetSourceUrl(id, format);
+
+        return new Sticker(id, name, format, sourceUrl);
+    }
+}

DiscordChatExporter.Core/Discord/Data/StickerFormat.cs

@@ -0,0 +1,8 @@
+namespace DiscordChatExporter.Core.Discord.Data;
+
+public enum StickerFormat
+{
+    Png = 1,
+    PngAnimated = 2,
+    Lottie = 3
+}

DiscordChatExporter.Core/Discord/DiscordClient.cs

@@ -12,6 +12,7 @@ using DiscordChatExporter.Core.Discord.Data;
 using DiscordChatExporter.Core.Exceptions;
 using DiscordChatExporter.Core.Utils;
 using DiscordChatExporter.Core.Utils.Extensions;
+using Gress;
 using JsonExtensions.Http;
 using JsonExtensions.Reading;
 
@@ -20,7 +21,7 @@ namespace DiscordChatExporter.Core.Discord;
 public class DiscordClient
 {
     private readonly string _token;
-    private readonly Uri _baseUri = new("https://discord.com/api/v8/", UriKind.Absolute);
+    private readonly Uri _baseUri = new("https://discord.com/api/v9/", UriKind.Absolute);
 
     private TokenKind _tokenKind = TokenKind.Unknown;
 
@@ -273,7 +274,7 @@ public class DiscordClient
         Snowflake channelId,
         Snowflake? after = null,
         Snowflake? before = null,
-        IProgress<double>? progress = null,
+        IProgress<Percentage>? progress = null,
         [EnumeratorCancellation] CancellationToken cancellationToken = default)
     {
         // Get the last message in the specified range.
@@ -322,16 +323,13 @@ public class DiscordClient
                     var exportedDuration = (message.Timestamp - firstMessage.Timestamp).Duration();
                     var totalDuration = (lastMessage.Timestamp - firstMessage.Timestamp).Duration();
 
-                    if (totalDuration > TimeSpan.Zero)
-                    {
-                        progress.Report(exportedDuration / totalDuration);
-                    }
-                    // Avoid division by zero if all messages have the exact same timestamp
-                    // (which may be the case if there's only one message in the channel)
-                    else
-                    {
-                        progress.Report(1);
-                    }
+                    progress.Report(Percentage.FromFraction(
+                        // Avoid division by zero if all messages have the exact same timestamp
+                        // (which may be the case if there's only one message in the channel)
+                        totalDuration > TimeSpan.Zero
+                            ? exportedDuration / totalDuration
+                            : 1
+                    ));
                 }
 
                 yield return message;

DiscordChatExporter.Core/DiscordChatExporter.Core.csproj

@@ -5,6 +5,7 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <PackageReference Include="Gress" Version="2.0.1" />
     <PackageReference Include="JsonExtensions" Version="1.2.0" />
     <PackageReference Include="MiniRazor.CodeGen" Version="2.2.0" />
     <PackageReference Include="Polly" Version="7.2.3" />

DiscordChatExporter.Core/Exporting/ChannelExporter.cs

@@ -8,6 +8,7 @@ using DiscordChatExporter.Core.Discord.Data;
 using DiscordChatExporter.Core.Discord.Data.Common;
 using DiscordChatExporter.Core.Exceptions;
 using DiscordChatExporter.Core.Utils.Extensions;
+using Gress;
 
 namespace DiscordChatExporter.Core.Exporting;
 
@@ -19,7 +20,7 @@ public class ChannelExporter
 
     public async ValueTask ExportChannelAsync(
         ExportRequest request,
-        IProgress<double>? progress = null,
+        IProgress<Percentage>? progress = null,
         CancellationToken cancellationToken = default)
     {
         // Build context

DiscordChatExporter.Core/Exporting/Filtering/Parsing/FilterGrammar.cs

@@ -44,6 +44,12 @@ internal static class FilterGrammar
         .Select(v => (MessageFilter) new MentionsMessageFilter(v))
         .Named("mentions:<value>");
 
+    private static readonly TextParser<MessageFilter> ReactionFilter = Span
+        .EqualToIgnoreCase("reaction:")
+        .IgnoreThen(String)
+        .Select(v => (MessageFilter) new ReactionMessageFilter(v))
+        .Named("reaction:<value>");
+
     private static readonly TextParser<MessageFilter> HasFilter = Span
         .EqualToIgnoreCase("has:")
         .IgnoreThen(Parse.OneOf(
@@ -72,6 +78,7 @@ internal static class FilterGrammar
         GroupedFilter,
         FromFilter,
         MentionsFilter,
+        ReactionFilter,
         HasFilter,
         ContainsFilter
     );

DiscordChatExporter.Core/Exporting/Filtering/ReactionMessageFilter.cs

@@ -0,0 +1,18 @@
+using System;
+using System.Linq;
+using DiscordChatExporter.Core.Discord.Data;
+
+namespace DiscordChatExporter.Core.Exporting.Filtering;
+
+internal class ReactionMessageFilter : MessageFilter
+{
+    private readonly string _value;
+
+    public ReactionMessageFilter(string value) => _value = value;
+
+    public override bool IsMatch(Message message) => message.Reactions.Any(r =>
+        string.Equals(_value, r.Emoji.Id?.ToString(), StringComparison.OrdinalIgnoreCase) ||
+        string.Equals(_value, r.Emoji.Name, StringComparison.OrdinalIgnoreCase) ||
+        string.Equals(_value, r.Emoji.Code, StringComparison.OrdinalIgnoreCase)
+    );
+}

DiscordChatExporter.Core/Exporting/MediaDownloader.cs

@@ -103,7 +103,15 @@ internal partial class MediaDownloader
         // Otherwise, use the original file name but inject the hash in the middle
         var fileNameWithoutExtension = Path.GetFileNameWithoutExtension(fileName);
         var fileExtension = Path.GetExtension(fileName);
+        
+        // Probably not a file extension, just a dot in a long file name
+        // https://github.com/Tyrrrz/DiscordChatExporter/issues/708
+        if (fileExtension.Length > 41)
+        {
+            fileNameWithoutExtension = fileName;
+            fileExtension = "";
+        }
 
         return PathEx.EscapeFileName(fileNameWithoutExtension.Truncate(42) + '-' + urlHash + fileExtension);
     }
-}
+}

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

@@ -1,6 +1,7 @@
 @using System
 @using System.Linq
 @using System.Threading.Tasks
+@using DiscordChatExporter.Core.Discord.Data
 @using DiscordChatExporter.Core.Exporting.Writers.Html;
 
 @namespace DiscordChatExporter.Core.Exporting.Writers.Html
@@ -411,6 +412,21 @@
                     }
                 }
 
+                @{/* Stickers */}
+                @foreach (var sticker in message.Stickers)
+                {
+                    <div class="chatlog__sticker" title="@sticker.Name">
+                        @if (sticker.Format is StickerFormat.Png or StickerFormat.PngAnimated)
+                        {
+                            <img class="chatlog__sticker--media" src="@(await ResolveUrlAsync(sticker.SourceUrl))" alt="Sticker">
+                        }
+                        else if (sticker.Format == StickerFormat.Lottie)
+                        {
+                            <div class="chatlog__sticker--media" data-source="@(await ResolveUrlAsync(sticker.SourceUrl))"></div>
+                        }
+                    </div>
+                }
+
                 @{/* Message reactions */}
                 @if (message.Reactions.Any())
                 {

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

@@ -113,8 +113,7 @@
             margin: 0.05em 0;
         }
 
-        .quote::before {
-            content: "";
+        .quote-border {
             margin-right: 0.5em;
             border: 2px solid @Themed("#4f545c", "#c7ccd1");
             border-radius: 3px;
@@ -597,6 +596,16 @@
             border-radius: 3px;
         }
 
+        .chatlog__sticker {
+            width: 180px;
+            height: 180px;
+        }
+
+        .chatlog__sticker--media {
+            max-width: 100%;
+            max-height: 100%;
+        }
+
         .chatlog__reactions {
             display: flex;
         }
@@ -660,7 +669,29 @@
     <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/9.15.6/highlight.min.js"></script>
     <script>
         document.addEventListener('DOMContentLoaded', () => {
-            document.querySelectorAll('.pre--multiline').forEach(block => hljs.highlightBlock(block));
+            document.querySelectorAll('.pre--multiline').forEach(e => hljs.highlightBlock(e));
+        });
+    </script>
+
+    @{/* Lottie animation support */}
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/lottie-web/5.8.1/lottie.min.js"></script>
+    <script>
+        document.addEventListener('DOMContentLoaded', () => {
+            document.querySelectorAll('.chatlog__sticker--media[data-source]').forEach(e => {
+                const imageDataUrl = e.getAttribute('data-source');
+
+                const anim = lottie.loadAnimation({
+                  container: e,
+                  renderer: 'svg',
+                  loop: true,
+                  autoplay: true,
+                  path: imageDataUrl
+                });
+
+                anim.addEventListener('data_failed', () =>
+                    e.innerHTML = '<strong>[Sticker cannot be rendered]</strong>'
+                );
+            });
         });
     </script>
 

DiscordChatExporter.Core/Exporting/Writers/JsonMessageWriter.cs

@@ -161,6 +161,21 @@ internal class JsonMessageWriter : MessageWriter
         await _writer.FlushAsync(cancellationToken);
     }
 
+    private async ValueTask WriteStickerAsync(
+        Sticker sticker,
+        CancellationToken cancellationToken = default)
+    {
+        _writer.WriteStartObject();
+
+        _writer.WriteString("id", sticker.Id.ToString());
+        _writer.WriteString("name", sticker.Name);
+        _writer.WriteString("format", sticker.Format.ToString());
+        _writer.WriteString("sourceUrl", await Context.ResolveMediaUrlAsync(sticker.SourceUrl, cancellationToken));
+
+        _writer.WriteEndObject();
+        await _writer.FlushAsync(cancellationToken);
+    }
+
     private async ValueTask WriteReactionAsync(
         Reaction reaction,
         CancellationToken cancellationToken = default)
@@ -169,7 +184,7 @@ internal class JsonMessageWriter : MessageWriter
 
         // Emoji
         _writer.WriteStartObject("emoji");
-        _writer.WriteString("id", reaction.Emoji.Id);
+        _writer.WriteString("id", reaction.Emoji.Id.ToString());
         _writer.WriteString("name", reaction.Emoji.Name);
         _writer.WriteBoolean("isAnimated", reaction.Emoji.IsAnimated);
         _writer.WriteString("imageUrl", await Context.ResolveMediaUrlAsync(reaction.Emoji.ImageUrl, cancellationToken));
@@ -276,6 +291,14 @@ internal class JsonMessageWriter : MessageWriter
 
         _writer.WriteEndArray();
 
+        // Stickers
+        _writer.WriteStartArray("stickers");
+
+        foreach (var sticker in message.Stickers)
+            await WriteStickerAsync(sticker, cancellationToken);
+
+        _writer.WriteEndArray();
+
         // Reactions
         _writer.WriteStartArray("reactions");
 

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

@@ -3,7 +3,6 @@ using System.Linq;
 using System.Net;
 using System.Text;
 using System.Text.RegularExpressions;
-using DiscordChatExporter.Core.Discord;
 using DiscordChatExporter.Core.Discord.Data;
 using DiscordChatExporter.Core.Markdown;
 using DiscordChatExporter.Core.Markdown.Parsing;
@@ -40,7 +39,8 @@ internal partial class HtmlMarkdownVisitor : MarkdownVisitor
             FormattingKind.Strikethrough => ("<s>", "</s>"),
             FormattingKind.Spoiler => (
                 "<span class=\"spoiler-text spoiler-text--hidden\" onclick=\"showSpoiler(event, this)\">", "</span>"),
-            FormattingKind.Quote => ("<div class=\"quote\">", "</div>"),
+            FormattingKind.Quote => (
+                "<div class=\"quote\"><div class=\"quote-border\"></div><div class=\"quote-content\">", "</div></div>"),
             _ => throw new ArgumentOutOfRangeException(nameof(formatting.Kind))
         };
 
@@ -85,8 +85,8 @@ internal partial class HtmlMarkdownVisitor : MarkdownVisitor
 
         _buffer.Append(
             !string.IsNullOrWhiteSpace(linkedMessageId)
-                ? $"<a href=\"{Uri.EscapeUriString(link.Url)}\" onclick=\"scrollToMessage(event, '{linkedMessageId}')\">"
-                : $"<a href=\"{Uri.EscapeUriString(link.Url)}\">"
+                ? $"<a href=\"{HtmlEncode(link.Url)}\" onclick=\"scrollToMessage(event, '{linkedMessageId}')\">"
+                : $"<a href=\"{HtmlEncode(link.Url)}\">"
         );
 
         var result = base.VisitLink(link);
@@ -108,28 +108,34 @@ internal partial class HtmlMarkdownVisitor : MarkdownVisitor
 
     protected override MarkdownNode VisitMention(MentionNode mention)
     {
-        var mentionId = Snowflake.TryParse(mention.Id);
-        if (mention.Kind == MentionKind.Meta)
+        if (mention.Kind == MentionKind.Everyone)
         {
             _buffer
                 .Append("<span class=\"mention\">")
-                .Append("@").Append(HtmlEncode(mention.Id))
+                .Append("@everyone")
+                .Append("</span>");
+        }
+        else if (mention.Kind == MentionKind.Here)
+        {
+            _buffer
+                .Append("<span class=\"mention\">")
+                .Append("@here")
                 .Append("</span>");
         }
         else if (mention.Kind == MentionKind.User)
         {
-            var member = mentionId?.Pipe(_context.TryGetMember);
+            var member = mention.TargetId?.Pipe(_context.TryGetMember);
             var fullName = member?.User.FullName ?? "Unknown";
             var nick = member?.Nick ?? "Unknown";
 
             _buffer
                 .Append($"<span class=\"mention\" title=\"{HtmlEncode(fullName)}\">")
-                .Append("@").Append(HtmlEncode(nick))
+                .Append('@').Append(HtmlEncode(nick))
                 .Append("</span>");
         }
         else if (mention.Kind == MentionKind.Channel)
         {
-            var channel = mentionId?.Pipe(_context.TryGetChannel);
+            var channel = mention.TargetId?.Pipe(_context.TryGetChannel);
             var symbol = channel?.IsVoiceChannel == true ? "🔊" : "#";
             var name = channel?.Name ?? "deleted-channel";
 
@@ -140,7 +146,7 @@ internal partial class HtmlMarkdownVisitor : MarkdownVisitor
         }
         else if (mention.Kind == MentionKind.Role)
         {
-            var role = mentionId?.Pipe(_context.TryGetRole);
+            var role = mention.TargetId?.Pipe(_context.TryGetRole);
             var name = role?.Name ?? "deleted-role";
             var color = role?.Color;
 
@@ -150,7 +156,7 @@ internal partial class HtmlMarkdownVisitor : MarkdownVisitor
 
             _buffer
                 .Append($"<span class=\"mention\" style=\"{style}\">")
-                .Append("@").Append(HtmlEncode(name))
+                .Append('@').Append(HtmlEncode(name))
                 .Append("</span>");
         }
 

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

@@ -1,5 +1,4 @@
 using System.Text;
-using DiscordChatExporter.Core.Discord;
 using DiscordChatExporter.Core.Markdown;
 using DiscordChatExporter.Core.Markdown.Parsing;
 using DiscordChatExporter.Core.Utils.Extensions;
@@ -36,21 +35,24 @@ internal partial class PlainTextMarkdownVisitor : MarkdownVisitor
 
     protected override MarkdownNode VisitMention(MentionNode mention)
     {
-        var mentionId = Snowflake.TryParse(mention.Id);
-        if (mention.Kind == MentionKind.Meta)
+        if (mention.Kind == MentionKind.Everyone)
         {
-            _buffer.Append($"@{mention.Id}");
+            _buffer.Append("@everyone");
+        }
+        else if (mention.Kind == MentionKind.Here)
+        {
+            _buffer.Append("@here");
         }
         else if (mention.Kind == MentionKind.User)
         {
-            var member = mentionId?.Pipe(_context.TryGetMember);
+            var member = mention.TargetId?.Pipe(_context.TryGetMember);
             var name = member?.User.Name ?? "Unknown";
 
             _buffer.Append($"@{name}");
         }
         else if (mention.Kind == MentionKind.Channel)
         {
-            var channel = mentionId?.Pipe(_context.TryGetChannel);
+            var channel =mention.TargetId?.Pipe(_context.TryGetChannel);
             var name = channel?.Name ?? "deleted-channel";
 
             _buffer.Append($"#{name}");
@@ -61,7 +63,7 @@ internal partial class PlainTextMarkdownVisitor : MarkdownVisitor
         }
         else if (mention.Kind == MentionKind.Role)
         {
-            var role = mentionId?.Pipe(_context.TryGetRole);
+            var role = mention.TargetId?.Pipe(_context.TryGetRole);
             var name = role?.Name ?? "deleted-role";
 
             _buffer.Append($"@{name}");

DiscordChatExporter.Core/Exporting/Writers/PlainTextMessageWriter.cs

@@ -98,6 +98,25 @@ internal class PlainTextMessageWriter : MessageWriter
         }
     }
 
+    private async ValueTask WriteStickersAsync(
+        IReadOnlyList<Sticker> stickers,
+        CancellationToken cancellationToken = default)
+    {
+        if (!stickers.Any())
+            return;
+
+        await _writer.WriteLineAsync("{Stickers}");
+
+        foreach (var sticker in stickers)
+        {
+            cancellationToken.ThrowIfCancellationRequested();
+
+            await _writer.WriteLineAsync(await Context.ResolveMediaUrlAsync(sticker.SourceUrl, cancellationToken));
+        }
+
+        await _writer.WriteLineAsync();
+    }
+
     private async ValueTask WriteReactionsAsync(
         IReadOnlyList<Reaction> reactions,
         CancellationToken cancellationToken = default)
@@ -156,9 +175,10 @@ internal class PlainTextMessageWriter : MessageWriter
 
         await _writer.WriteLineAsync();
 
-        // Attachments, embeds, reactions
+        // Attachments, embeds, reactions, etc.
         await WriteAttachmentsAsync(message.Attachments, cancellationToken);
         await WriteEmbedsAsync(message.Embeds, cancellationToken);
+        await WriteStickersAsync(message.Stickers, cancellationToken);
         await WriteReactionsAsync(message.Reactions, cancellationToken);
 
         await _writer.WriteLineAsync();

DiscordChatExporter.Core/Markdown/EmojiNode.cs

@@ -1,21 +1,22 @@
-using DiscordChatExporter.Core.Utils;
+using DiscordChatExporter.Core.Discord;
+using DiscordChatExporter.Core.Utils;
 
 namespace DiscordChatExporter.Core.Markdown;
 
 internal record EmojiNode(
     // Only present on custom emoji
-    string? Id,
+    Snowflake? Id,
     // Name of custom emoji (e.g. LUL) or actual representation of standard emoji (e.g. 🙂)
     string Name,
     bool IsAnimated) : MarkdownNode
 {
+    public bool IsCustomEmoji => Id is not null;
+
     // Name of custom emoji (e.g. LUL) or name of standard emoji (e.g. slight_smile)
-    public string Code => !string.IsNullOrWhiteSpace(Id)
+    public string Code => IsCustomEmoji
         ? Name
         : EmojiIndex.TryGetCode(Name) ?? Name;
 
-    public bool IsCustomEmoji => !string.IsNullOrWhiteSpace(Id);
-
     public EmojiNode(string name)
         : this(null, name, false)
     {

DiscordChatExporter.Core/Markdown/MentionKind.cs

@@ -2,7 +2,8 @@
 
 internal enum MentionKind
 {
-    Meta,
+    Everyone,
+    Here,
     User,
     Channel,
     Role

DiscordChatExporter.Core/Markdown/MentionNode.cs

@@ -1,3 +1,6 @@
-namespace DiscordChatExporter.Core.Markdown;
+using DiscordChatExporter.Core.Discord;
 
-internal record MentionNode(string Id, MentionKind Kind) : MarkdownNode;
+namespace DiscordChatExporter.Core.Markdown;
+
+// Null ID means it's a meta mention or an invalid mention
+internal record MentionNode(Snowflake? TargetId, MentionKind Kind) : MarkdownNode;

DiscordChatExporter.Core/Markdown/Parsing/AggregateMatcher.cs

@@ -16,7 +16,7 @@ internal class AggregateMatcher<T> : IMatcher<T>
     {
     }
 
-    public ParsedMatch<T>? TryMatch(StringPart stringPart)
+    public ParsedMatch<T>? TryMatch(StringSegment segment)
     {
         ParsedMatch<T>? earliestMatch = null;
 
@@ -24,19 +24,19 @@ internal class AggregateMatcher<T> : IMatcher<T>
         foreach (var matcher in _matchers)
         {
             // Try to match
-            var match = matcher.TryMatch(stringPart);
+            var match = matcher.TryMatch(segment);
 
             // If there's no match - continue
             if (match is null)
                 continue;
 
             // If this match is earlier than previous earliest - replace
-            if (earliestMatch is null || match.StringPart.StartIndex < earliestMatch.StringPart.StartIndex)
+            if (earliestMatch is null || match.Segment.StartIndex < earliestMatch.Segment.StartIndex)
                 earliestMatch = match;
 
             // If the earliest match starts at the very beginning - break,
             // because it's impossible to find a match earlier than that
-            if (earliestMatch.StringPart.StartIndex == stringPart.StartIndex)
+            if (earliestMatch.Segment.StartIndex == segment.StartIndex)
                 break;
         }
 

DiscordChatExporter.Core/Markdown/Parsing/IMatcher.cs

@@ -5,44 +5,57 @@ namespace DiscordChatExporter.Core.Markdown.Parsing;
 
 internal interface IMatcher<T>
 {
-    ParsedMatch<T>? TryMatch(StringPart stringPart);
+    ParsedMatch<T>? TryMatch(StringSegment segment);
 }
 
 internal static class MatcherExtensions
 {
-    public static IEnumerable<ParsedMatch<T>> MatchAll<T>(this IMatcher<T> matcher,
-        StringPart stringPart, Func<StringPart, T> transformFallback)
+    public static IEnumerable<ParsedMatch<T>> MatchAll<T>(
+        this IMatcher<T> matcher,
+        StringSegment segment,
+        Func<StringSegment, T> transformFallback)
     {
         // Loop through segments divided by individual matches
-        var currentIndex = stringPart.StartIndex;
-        while (currentIndex < stringPart.EndIndex)
+        var currentIndex = segment.StartIndex;
+        while (currentIndex < segment.EndIndex)
         {
             // Find a match within this segment
-            var match = matcher.TryMatch(stringPart.Slice(currentIndex, stringPart.EndIndex - currentIndex));
+            var match = matcher.TryMatch(
+                segment.Relocate(
+                    currentIndex,
+                    segment.EndIndex - currentIndex
+                )
+            );
 
-            // If there's no match - break
             if (match is null)
                 break;
 
-            // If this match doesn't start immediately at current index - transform and yield fallback first
-            if (match.StringPart.StartIndex > currentIndex)
+            // If this match doesn't start immediately at the current position - transform and yield fallback first
+            if (match.Segment.StartIndex > currentIndex)
             {
-                var fallbackPart = stringPart.Slice(currentIndex, match.StringPart.StartIndex - currentIndex);
-                yield return new ParsedMatch<T>(fallbackPart, transformFallback(fallbackPart));
+                var fallbackSegment = segment.Relocate(
+                    currentIndex,
+                    match.Segment.StartIndex - currentIndex
+                );
+
+                yield return new ParsedMatch<T>(fallbackSegment, transformFallback(fallbackSegment));
             }
 
-            // Yield match
             yield return match;
 
             // Shift current index to the end of the match
-            currentIndex = match.StringPart.StartIndex + match.StringPart.Length;
+            currentIndex = match.Segment.StartIndex + match.Segment.Length;
         }
 
-        // If EOL wasn't reached - transform and yield remaining part as fallback
-        if (currentIndex < stringPart.EndIndex)
+        // If EOL hasn't been reached - transform and yield remaining part as fallback
+        if (currentIndex < segment.EndIndex)
         {
-            var fallbackPart = stringPart.Slice(currentIndex);
-            yield return new ParsedMatch<T>(fallbackPart, transformFallback(fallbackPart));
+            var fallbackSegment = segment.Relocate(
+                currentIndex,
+                segment.EndIndex - currentIndex
+            );
+
+            yield return new ParsedMatch<T>(fallbackSegment, transformFallback(fallbackSegment));
         }
     }
 }

DiscordChatExporter.Core/Markdown/Parsing/MarkdownParser.cs

@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using System.Globalization;
 using System.Linq;
 using System.Text.RegularExpressions;
+using DiscordChatExporter.Core.Discord;
 using DiscordChatExporter.Core.Utils;
 
 namespace DiscordChatExporter.Core.Markdown.Parsing;
@@ -23,7 +24,7 @@ internal static partial class MarkdownParser
     // Capture any character until the earliest double asterisk not followed by an asterisk
     private static readonly IMatcher<MarkdownNode> BoldFormattingNodeMatcher = new RegexMatcher<MarkdownNode>(
         new Regex("\\*\\*(.+?)\\*\\*(?!\\*)", DefaultRegexOptions | RegexOptions.Singleline),
-        (p, m) => new FormattingNode(FormattingKind.Bold, Parse(p.Slice(m.Groups[1])))
+        (s, m) => new FormattingNode(FormattingKind.Bold, Parse(s.Relocate(m.Groups[1])))
     );
 
     // Capture any character until the earliest single asterisk not preceded or followed by an asterisk
@@ -31,54 +32,54 @@ internal static partial class MarkdownParser
     // Closing asterisk must not be preceded by whitespace
     private static readonly IMatcher<MarkdownNode> ItalicFormattingNodeMatcher = new RegexMatcher<MarkdownNode>(
         new Regex("\\*(?!\\s)(.+?)(?<!\\s|\\*)\\*(?!\\*)", DefaultRegexOptions | RegexOptions.Singleline),
-        (p, m) => new FormattingNode(FormattingKind.Italic, Parse(p.Slice(m.Groups[1])))
+        (s, m) => new FormattingNode(FormattingKind.Italic, Parse(s.Relocate(m.Groups[1])))
     );
 
     // Capture any character until the earliest triple asterisk not followed by an asterisk
     private static readonly IMatcher<MarkdownNode> ItalicBoldFormattingNodeMatcher = new RegexMatcher<MarkdownNode>(
         new Regex("\\*(\\*\\*.+?\\*\\*)\\*(?!\\*)", DefaultRegexOptions | RegexOptions.Singleline),
-        (p, m) => new FormattingNode(FormattingKind.Italic, Parse(p.Slice(m.Groups[1]), BoldFormattingNodeMatcher))
+        (s, m) => new FormattingNode(FormattingKind.Italic, Parse(s.Relocate(m.Groups[1]), BoldFormattingNodeMatcher))
     );
 
     // Capture any character except underscore until an underscore
     // Closing underscore must not be followed by a word character
     private static readonly IMatcher<MarkdownNode> ItalicAltFormattingNodeMatcher = new RegexMatcher<MarkdownNode>(
         new Regex("_([^_]+)_(?!\\w)", DefaultRegexOptions | RegexOptions.Singleline),
-        (p, m) => new FormattingNode(FormattingKind.Italic, Parse(p.Slice(m.Groups[1])))
+        (s, m) => new FormattingNode(FormattingKind.Italic, Parse(s.Relocate(m.Groups[1])))
     );
 
     // Capture any character until the earliest double underscore not followed by an underscore
     private static readonly IMatcher<MarkdownNode> UnderlineFormattingNodeMatcher = new RegexMatcher<MarkdownNode>(
         new Regex("__(.+?)__(?!_)", DefaultRegexOptions | RegexOptions.Singleline),
-        (p, m) => new FormattingNode(FormattingKind.Underline, Parse(p.Slice(m.Groups[1])))
+        (s, m) => new FormattingNode(FormattingKind.Underline, Parse(s.Relocate(m.Groups[1])))
     );
 
     // Capture any character until the earliest triple underscore not followed by an underscore
     private static readonly IMatcher<MarkdownNode> ItalicUnderlineFormattingNodeMatcher =
         new RegexMatcher<MarkdownNode>(
             new Regex("_(__.+?__)_(?!_)", DefaultRegexOptions | RegexOptions.Singleline),
-            (p, m) => new FormattingNode(FormattingKind.Italic,
-                Parse(p.Slice(m.Groups[1]), UnderlineFormattingNodeMatcher))
+            (s, m) => new FormattingNode(FormattingKind.Italic,
+                Parse(s.Relocate(m.Groups[1]), UnderlineFormattingNodeMatcher))
         );
 
     // Capture any character until the earliest double tilde
     private static readonly IMatcher<MarkdownNode> StrikethroughFormattingNodeMatcher =
         new RegexMatcher<MarkdownNode>(
             new Regex("~~(.+?)~~", DefaultRegexOptions | RegexOptions.Singleline),
-            (p, m) => new FormattingNode(FormattingKind.Strikethrough, Parse(p.Slice(m.Groups[1])))
+            (s, m) => new FormattingNode(FormattingKind.Strikethrough, Parse(s.Relocate(m.Groups[1])))
         );
 
     // Capture any character until the earliest double pipe
     private static readonly IMatcher<MarkdownNode> SpoilerFormattingNodeMatcher = new RegexMatcher<MarkdownNode>(
         new Regex("\\|\\|(.+?)\\|\\|", DefaultRegexOptions | RegexOptions.Singleline),
-        (p, m) => new FormattingNode(FormattingKind.Spoiler, Parse(p.Slice(m.Groups[1])))
+        (s, m) => new FormattingNode(FormattingKind.Spoiler, Parse(s.Relocate(m.Groups[1])))
     );
 
     // Capture any character until the end of the line
     // Opening 'greater than' character must be followed by whitespace
     private static readonly IMatcher<MarkdownNode> SingleLineQuoteNodeMatcher = new RegexMatcher<MarkdownNode>(
         new Regex("^>\\s(.+\n?)", DefaultRegexOptions),
-        (p, m) => new FormattingNode(FormattingKind.Quote, Parse(p.Slice(m.Groups[1])))
+        (s, m) => new FormattingNode(FormattingKind.Quote, Parse(s.Relocate(m.Groups[1])))
     );
 
     // Repeatedly capture any character until the end of the line
@@ -97,7 +98,7 @@ internal static partial class MarkdownParser
     // Opening 'greater than' characters must be followed by whitespace
     private static readonly IMatcher<MarkdownNode> MultiLineQuoteNodeMatcher = new RegexMatcher<MarkdownNode>(
         new Regex("^>>>\\s(.+)", DefaultRegexOptions | RegexOptions.Singleline),
-        (p, m) => new FormattingNode(FormattingKind.Quote, Parse(p.Slice(m.Groups[1])))
+        (s, m) => new FormattingNode(FormattingKind.Quote, Parse(s.Relocate(m.Groups[1])))
     );
 
     /* Code blocks */
@@ -123,31 +124,31 @@ internal static partial class MarkdownParser
     // Capture @everyone
     private static readonly IMatcher<MarkdownNode> EveryoneMentionNodeMatcher = new StringMatcher<MarkdownNode>(
         "@everyone",
-        _ => new MentionNode("everyone", MentionKind.Meta)
+        _ => new MentionNode(null, MentionKind.Everyone)
     );
 
     // Capture @here
     private static readonly IMatcher<MarkdownNode> HereMentionNodeMatcher = new StringMatcher<MarkdownNode>(
         "@here",
-        _ => new MentionNode("here", MentionKind.Meta)
+        _ => new MentionNode(null, MentionKind.Here)
     );
 
     // Capture <@123456> or <@!123456>
     private static readonly IMatcher<MarkdownNode> UserMentionNodeMatcher = new RegexMatcher<MarkdownNode>(
         new Regex("<@!?(\\d+)>", DefaultRegexOptions),
-        (_, m) => new MentionNode(m.Groups[1].Value, MentionKind.User)
+        (_, m) => new MentionNode(Snowflake.TryParse(m.Groups[1].Value), MentionKind.User)
     );
 
     // Capture <#123456>
     private static readonly IMatcher<MarkdownNode> ChannelMentionNodeMatcher = new RegexMatcher<MarkdownNode>(
         new Regex("<#!?(\\d+)>", DefaultRegexOptions),
-        (_, m) => new MentionNode(m.Groups[1].Value, MentionKind.Channel)
+        (_, m) => new MentionNode(Snowflake.TryParse(m.Groups[1].Value), MentionKind.Channel)
     );
 
     // Capture <@&123456>
     private static readonly IMatcher<MarkdownNode> RoleMentionNodeMatcher = new RegexMatcher<MarkdownNode>(
         new Regex("<@&(\\d+)>", DefaultRegexOptions),
-        (_, m) => new MentionNode(m.Groups[1].Value, MentionKind.Role)
+        (_, m) => new MentionNode(Snowflake.TryParse(m.Groups[1].Value), MentionKind.Role)
     );
 
     /* Emoji */
@@ -177,7 +178,11 @@ internal static partial class MarkdownParser
     // Capture <:lul:123456> or <a:lul:123456>
     private static readonly IMatcher<MarkdownNode> CustomEmojiNodeMatcher = new RegexMatcher<MarkdownNode>(
         new Regex("<(a)?:(.+?):(\\d+?)>", DefaultRegexOptions),
-        (_, m) => new EmojiNode(m.Groups[3].Value, m.Groups[2].Value, !string.IsNullOrWhiteSpace(m.Groups[1].Value))
+        (_, m) => new EmojiNode(
+            Snowflake.TryParse(m.Groups[3].Value),
+            m.Groups[2].Value,
+            !string.IsNullOrWhiteSpace(m.Groups[1].Value)
+        )
     );
 
     /* Links */
@@ -185,7 +190,7 @@ internal static partial class MarkdownParser
     // Capture [title](link)
     private static readonly IMatcher<MarkdownNode> TitledLinkNodeMatcher = new RegexMatcher<MarkdownNode>(
         new Regex("\\[(.+?)\\]\\((.+?)\\)", DefaultRegexOptions),
-        (p, m) => new LinkNode(m.Groups[2].Value, Parse(p.Slice(m.Groups[1])))
+        (s, m) => new LinkNode(m.Groups[2].Value, Parse(s.Relocate(m.Groups[1])))
     );
 
     // Capture any non-whitespace character after http:// or https://
@@ -207,7 +212,7 @@ internal static partial class MarkdownParser
     // This escapes it from matching for formatting
     private static readonly IMatcher<MarkdownNode> ShrugTextNodeMatcher = new StringMatcher<MarkdownNode>(
         @"¯\_(ツ)_/¯",
-        p => new TextNode(p.ToString())
+        s => new TextNode(s.ToString())
     );
 
     // Capture some specific emoji that don't get rendered
@@ -323,24 +328,24 @@ internal static partial class MarkdownParser
         UnixTimestampNodeMatcher
     );
 
-    private static IReadOnlyList<MarkdownNode> Parse(StringPart stringPart, IMatcher<MarkdownNode> matcher) =>
+    private static IReadOnlyList<MarkdownNode> Parse(StringSegment segment, IMatcher<MarkdownNode> matcher) =>
         matcher
-            .MatchAll(stringPart, p => new TextNode(p.ToString()))
+            .MatchAll(segment, s => new TextNode(s.ToString()))
             .Select(r => r.Value)
             .ToArray();
 }
 
 internal static partial class MarkdownParser
 {
-    private static IReadOnlyList<MarkdownNode> Parse(StringPart stringPart) =>
-        Parse(stringPart, AggregateNodeMatcher);
+    private static IReadOnlyList<MarkdownNode> Parse(StringSegment segment) =>
+        Parse(segment, AggregateNodeMatcher);
 
-    private static IReadOnlyList<MarkdownNode> ParseMinimal(StringPart stringPart) =>
-        Parse(stringPart, MinimalAggregateNodeMatcher);
+    private static IReadOnlyList<MarkdownNode> ParseMinimal(StringSegment segment) =>
+        Parse(segment, MinimalAggregateNodeMatcher);
 
     public static IReadOnlyList<MarkdownNode> Parse(string input) =>
-        Parse(new StringPart(input));
+        Parse(new StringSegment(input));
 
     public static IReadOnlyList<MarkdownNode> ParseMinimal(string input) =>
-        ParseMinimal(new StringPart(input));
+        ParseMinimal(new StringSegment(input));
 }

DiscordChatExporter.Core/Markdown/Parsing/ParsedMatch.cs

@@ -2,13 +2,13 @@
 
 internal class ParsedMatch<T>
 {
-    public StringPart StringPart { get; }
+    public StringSegment Segment { get; }
 
     public T Value { get; }
 
-    public ParsedMatch(StringPart stringPart, T value)
+    public ParsedMatch(StringSegment segment, T value)
     {
-        StringPart = stringPart;
+        Segment = segment;
         Value = value;
     }
 }

DiscordChatExporter.Core/Markdown/Parsing/RegexMatcher.cs

@@ -6,17 +6,17 @@ namespace DiscordChatExporter.Core.Markdown.Parsing;
 internal class RegexMatcher<T> : IMatcher<T>
 {
     private readonly Regex _regex;
-    private readonly Func<StringPart, Match, T?> _transform;
+    private readonly Func<StringSegment, Match, T?> _transform;
 
-    public RegexMatcher(Regex regex, Func<StringPart, Match, T?> transform)
+    public RegexMatcher(Regex regex, Func<StringSegment, Match, T?> transform)
     {
         _regex = regex;
         _transform = transform;
     }
 
-    public ParsedMatch<T>? TryMatch(StringPart stringPart)
+    public ParsedMatch<T>? TryMatch(StringSegment segment)
     {
-        var match = _regex.Match(stringPart.Target, stringPart.StartIndex, stringPart.Length);
+        var match = _regex.Match(segment.Source, segment.StartIndex, segment.Length);
         if (!match.Success)
             return null;
 
@@ -25,14 +25,14 @@ internal class RegexMatcher<T> : IMatcher<T>
         // Which is super weird because regex.Match(string, int) takes the whole input in context.
         // So in order to properly account for ^/$ regex tokens, we need to make sure that
         // the expression also matches on the bigger part of the input.
-        if (!_regex.IsMatch(stringPart.Target[..stringPart.EndIndex], stringPart.StartIndex))
+        if (!_regex.IsMatch(segment.Source[..segment.EndIndex], segment.StartIndex))
             return null;
 
-        var stringPartMatch = stringPart.Slice(match.Index, match.Length);
-        var value = _transform(stringPartMatch, match);
+        var segmentMatch = segment.Relocate(match);
+        var value = _transform(segmentMatch, match);
 
         return value is not null
-            ? new ParsedMatch<T>(stringPartMatch, value)
+            ? new ParsedMatch<T>(segmentMatch, value)
             : null;
     }
 }

DiscordChatExporter.Core/Markdown/Parsing/StringMatcher.cs

@@ -6,31 +6,31 @@ internal class StringMatcher<T> : IMatcher<T>
 {
     private readonly string _needle;
     private readonly StringComparison _comparison;
-    private readonly Func<StringPart, T?> _transform;
+    private readonly Func<StringSegment, T?> _transform;
 
-    public StringMatcher(string needle, StringComparison comparison, Func<StringPart, T?> transform)
+    public StringMatcher(string needle, StringComparison comparison, Func<StringSegment, T?> transform)
     {
         _needle = needle;
         _comparison = comparison;
         _transform = transform;
     }
 
-    public StringMatcher(string needle, Func<StringPart, T> transform)
+    public StringMatcher(string needle, Func<StringSegment, T> transform)
         : this(needle, StringComparison.Ordinal, transform)
     {
     }
 
-    public ParsedMatch<T>? TryMatch(StringPart stringPart)
+    public ParsedMatch<T>? TryMatch(StringSegment segment)
     {
-        var index = stringPart.Target.IndexOf(_needle, stringPart.StartIndex, stringPart.Length, _comparison);
+        var index = segment.Source.IndexOf(_needle, segment.StartIndex, segment.Length, _comparison);
         if (index < 0)
             return null;
 
-        var stringPartMatch = stringPart.Slice(index, _needle.Length);
-        var value = _transform(stringPartMatch);
+        var segmentMatch = segment.Relocate(index, _needle.Length);
+        var value = _transform(segmentMatch);
 
         return value is not null
-            ? new ParsedMatch<T>(stringPartMatch, value)
+            ? new ParsedMatch<T>(segmentMatch, value)
             : null;
     }
 }

DiscordChatExporter.Core/Markdown/Parsing/StringPart.cs

@@ -1,21 +0,0 @@
-using System.Text.RegularExpressions;
-
-namespace DiscordChatExporter.Core.Markdown.Parsing;
-
-internal readonly record struct StringPart(string Target, int StartIndex, int Length)
-{
-    public int EndIndex => StartIndex + Length;
-
-    public StringPart(string target)
-        : this(target, 0, target.Length)
-    {
-    }
-
-    public StringPart Slice(int newStartIndex, int newLength) => new(Target, newStartIndex, newLength);
-
-    public StringPart Slice(int newStartIndex) => Slice(newStartIndex, EndIndex - newStartIndex);
-
-    public StringPart Slice(Capture capture) => Slice(capture.Index, capture.Length);
-
-    public override string ToString() => Target.Substring(StartIndex, Length);
-}

DiscordChatExporter.Core/Markdown/Parsing/StringSegment.cs

@@ -0,0 +1,19 @@
+using System.Text.RegularExpressions;
+
+namespace DiscordChatExporter.Core.Markdown.Parsing;
+
+internal readonly record struct StringSegment(string Source, int StartIndex, int Length)
+{
+    public int EndIndex => StartIndex + Length;
+
+    public StringSegment(string target)
+        : this(target, 0, target.Length)
+    {
+    }
+
+    public StringSegment Relocate(int newStartIndex, int newLength) => new(Source, newStartIndex, newLength);
+
+    public StringSegment Relocate(Capture capture) => Relocate(capture.Index, capture.Length);
+
+    public override string ToString() => Source.Substring(StartIndex, Length);
+}

DiscordChatExporter.Core/Markdown/UnixTimestampNode.cs

@@ -2,5 +2,5 @@
 
 namespace DiscordChatExporter.Core.Markdown;
 
-// Null means invalid date
+// Null date means invalid timestamp
 internal record UnixTimestampNode(DateTimeOffset? Date) : MarkdownNode;

DiscordChatExporter.Gui/DiscordChatExporter.Gui.csproj

@@ -13,7 +13,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Gress" Version="1.2.0" />
+    <PackageReference Include="Gress" Version="2.0.1" />
     <PackageReference Include="MaterialDesignColors" Version="2.0.4" />
     <PackageReference Include="MaterialDesignThemes" Version="4.3.0" />
     <PackageReference Include="Microsoft.Xaml.Behaviors.Wpf" Version="1.1.39" />
@@ -22,7 +22,7 @@
     <PackageReference Include="Stylet" Version="1.3.6" />
     <PackageReference Include="Tyrrrz.Settings" Version="1.3.4" />
     <PackageReference Include="PropertyChanged.Fody" Version="3.4.0" PrivateAssets="all" />
-    <PackageReference Include="DotnetRuntimeBootstrapper" Version="2.0.3" PrivateAssets="all" />
+    <PackageReference Include="DotnetRuntimeBootstrapper" Version="2.2.0" PrivateAssets="all" />
   </ItemGroup>
 
   <ItemGroup>

DiscordChatExporter.Gui/Services/SettingsService.cs

@@ -1,13 +1,14 @@
 using DiscordChatExporter.Core.Exporting;
+using Microsoft.Win32;
 using Tyrrrz.Settings;
 
 namespace DiscordChatExporter.Gui.Services;
 
-public class SettingsService : SettingsManager
+public partial class SettingsService : SettingsManager
 {
     public bool IsAutoUpdateEnabled { get; set; } = true;
 
-    public bool IsDarkModeEnabled { get; set; }
+    public bool IsDarkModeEnabled { get; set; } = IsDarkModeEnabledByDefault();
 
     public bool IsTokenPersisted { get; set; } = true;
 
@@ -35,4 +36,21 @@ public class SettingsService : SettingsManager
     }
 
     public bool ShouldSerializeLastToken() => IsTokenPersisted;
+}
+
+public partial class SettingsService
+{
+    private static bool IsDarkModeEnabledByDefault()
+    {
+        try
+        {
+            return Registry.CurrentUser.OpenSubKey(
+                "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Themes\\Personalize", false
+            )?.GetValue("AppsUseLightTheme") is 0;
+        }
+        catch
+        {
+            return false;
+        }
+    }
 }

DiscordChatExporter.Gui/Utils/Internationalization.cs

@@ -0,0 +1,10 @@
+using System.Globalization;
+
+namespace DiscordChatExporter.Gui.Utils;
+
+internal static class Internationalization
+{
+    public static bool Is24Hours =>
+        string.IsNullOrWhiteSpace(CultureInfo.CurrentCulture.DateTimeFormat.AMDesignator) &&
+        string.IsNullOrWhiteSpace(CultureInfo.CurrentCulture.DateTimeFormat.PMDesignator);
+}

DiscordChatExporter.Gui/ViewModels/RootViewModel.cs

@@ -13,6 +13,7 @@ using DiscordChatExporter.Gui.Utils;
 using DiscordChatExporter.Gui.ViewModels.Dialogs;
 using DiscordChatExporter.Gui.ViewModels.Framework;
 using Gress;
+using Gress.Completable;
 using MaterialDesignThemes.Wpf;
 using Stylet;
 
@@ -25,15 +26,17 @@ public class RootViewModel : Screen
     private readonly SettingsService _settingsService;
     private readonly UpdateService _updateService;
 
+    private readonly AutoResetProgressMuxer _progressMuxer;
+
     private DiscordClient? _discord;
 
-    public ISnackbarMessageQueue Notifications { get; } = new SnackbarMessageQueue(TimeSpan.FromSeconds(5));
-
-    public IProgressManager ProgressManager { get; } = new ProgressManager();
-
     public bool IsBusy { get; private set; }
 
-    public bool IsProgressIndeterminate { get; private set; }
+    public ProgressContainer<Percentage> Progress { get; } = new();
+
+    public bool IsProgressIndeterminate => IsBusy && Progress.Current.Fraction is <= 0 or >= 1;
+
+    public SnackbarMessageQueue Notifications { get; } = new(TimeSpan.FromSeconds(5));
 
     public string? Token { get; set; }
 
@@ -60,20 +63,12 @@ public class RootViewModel : Screen
         _settingsService = settingsService;
         _updateService = updateService;
 
+        _progressMuxer = Progress.CreateMuxer().WithAutoReset();
+
         DisplayName = $"{App.Name} v{App.VersionString}";
 
-        // Update busy state when progress manager changes
-        ProgressManager.Bind(o => o.IsActive, (_, _) =>
-            IsBusy = ProgressManager.IsActive
-        );
-
-        ProgressManager.Bind(o => o.IsActive, (_, _) =>
-            IsProgressIndeterminate = ProgressManager.IsActive && ProgressManager.Progress is <= 0 or >= 1
-        );
-
-        ProgressManager.Bind(o => o.Progress, (_, _) =>
-            IsProgressIndeterminate = ProgressManager.IsActive && ProgressManager.Progress is <= 0 or >= 1
-        );
+        this.Bind(o => o.IsBusy, (_, _) => NotifyOfPropertyChange(() => IsProgressIndeterminate));
+        Progress.Bind(o => o.Current, (_, _) => NotifyOfPropertyChange(() => IsProgressIndeterminate));
     }
 
     private async ValueTask CheckForUpdatesAsync()
@@ -123,6 +118,19 @@ public class RootViewModel : Screen
             App.SetLightTheme();
         }
 
+        // War in Ukraine message
+        Notifications.Enqueue(
+            "⚠ UKRAINE IS AT WAR!",
+            "LEARN MORE & HELP", _ =>
+            {
+                ProcessEx.StartShellExecute("https://tyrrrz.me");
+            },
+            null,
+            true,
+            true,
+            TimeSpan.FromMinutes(1)
+        );
+
         await CheckForUpdatesAsync();
     }
 
@@ -147,7 +155,8 @@ public class RootViewModel : Screen
 
     public async void PopulateGuildsAndChannels()
     {
-        using var operation = ProgressManager.CreateOperation();
+        IsBusy = true;
+        var progress = _progressMuxer.CreateInput();
 
         try
         {
@@ -183,6 +192,11 @@ public class RootViewModel : Screen
 
             await _dialogManager.ShowDialogAsync(dialog);
         }
+        finally
+        {
+            progress.ReportCompletion();
+            IsBusy = false;
+        }
     }
 
     public bool CanExportChannels =>
@@ -194,6 +208,8 @@ public class RootViewModel : Screen
 
     public async void ExportChannels()
     {
+        IsBusy = true;
+
         try
         {
             if (_discord is null || SelectedGuild is null || SelectedChannels is null || !SelectedChannels.Any())
@@ -205,18 +221,22 @@ public class RootViewModel : Screen
 
             var exporter = new ChannelExporter(_discord);
 
-            var operations = ProgressManager.CreateOperations(dialog.Channels!.Count);
+            var progresses = Enumerable
+                .Range(0, dialog.Channels!.Count)
+                .Select(_ => _progressMuxer.CreateInput())
+                .ToArray();
+
             var successfulExportCount = 0;
 
             await Parallel.ForEachAsync(
-                dialog.Channels.Zip(operations),
+                dialog.Channels.Zip(progresses),
                 new ParallelOptions
                 {
                     MaxDegreeOfParallelism = Math.Max(1, _settingsService.ParallelLimit)
                 },
                 async (tuple, cancellationToken) =>
                 {
-                    var (channel, operation) = tuple;
+                    var (channel, progress) = tuple;
 
                     try
                     {
@@ -234,7 +254,7 @@ public class RootViewModel : Screen
                             _settingsService.DateFormat
                         );
 
-                        await exporter.ExportChannelAsync(request, operation, cancellationToken);
+                        await exporter.ExportChannelAsync(request, progress, cancellationToken);
 
                         Interlocked.Increment(ref successfulExportCount);
                     }
@@ -244,7 +264,7 @@ public class RootViewModel : Screen
                     }
                     finally
                     {
-                        operation.Dispose();
+                        progress.ReportCompletion();
                     }
                 }
             );
@@ -262,5 +282,9 @@ public class RootViewModel : Screen
 
             await _dialogManager.ShowDialogAsync(dialog);
         }
+        finally
+        {
+            IsBusy = false;
+        }
     }
 }

DiscordChatExporter.Gui/Views/Dialogs/ExportSetupView.xaml

@@ -1,17 +1,18 @@
 <UserControl
+    Style="{DynamicResource MaterialDesignRoot}"
+    Width="380"
+    d:DataContext="{d:DesignInstance Type=dialogs:ExportSetupViewModel}"
+    mc:Ignorable="d"
     x:Class="DiscordChatExporter.Gui.Views.Dialogs.ExportSetupView"
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
-    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
     xmlns:converters="clr-namespace:DiscordChatExporter.Gui.Converters"
     xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
     xmlns:dialogs="clr-namespace:DiscordChatExporter.Gui.ViewModels.Dialogs"
     xmlns:materialDesign="http://materialdesigninxaml.net/winfx/xaml/themes"
     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
     xmlns:s="https://github.com/canton7/Stylet"
-    Width="380"
-    d:DataContext="{d:DesignInstance Type=dialogs:ExportSetupViewModel}"
-    Style="{DynamicResource MaterialDesignRoot}"
-    mc:Ignorable="d">
+    xmlns:utils="clr-namespace:DiscordChatExporter.Gui.Utils"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
     <Grid>
         <Grid.RowDefinitions>
             <RowDefinition Height="Auto" />
@@ -29,8 +30,8 @@
             <!--  Guild icon  -->
             <Ellipse
                 Grid.Column="0"
-                Width="32"
-                Height="32">
+                Height="32"
+                Width="32">
                 <Ellipse.Fill>
                     <ImageBrush ImageSource="{Binding Guild.IconUrl}" />
                 </Ellipse.Fill>
@@ -38,12 +39,12 @@
 
             <!--  Placeholder (for multiple channels)  -->
             <TextBlock
-                Grid.Column="1"
-                Margin="8,0,0,0"
-                VerticalAlignment="Center"
                 FontSize="19"
                 FontWeight="Light"
+                Grid.Column="1"
+                Margin="8,0,0,0"
                 TextTrimming="CharacterEllipsis"
+                VerticalAlignment="Center"
                 Visibility="{Binding IsSingleChannel, Converter={x:Static s:BoolToVisibilityConverter.InverseInstance}}">
                 <Run Text="{Binding Channels.Count, Mode=OneWay}" />
                 <Run Text="channels selected" />
@@ -51,12 +52,12 @@
 
             <!--  Category and channel name (for single channel)  -->
             <TextBlock
-                Grid.Column="1"
-                Margin="8,0,0,0"
-                VerticalAlignment="Center"
                 FontSize="19"
                 FontWeight="Light"
+                Grid.Column="1"
+                Margin="8,0,0,0"
                 TextTrimming="CharacterEllipsis"
+                VerticalAlignment="Center"
                 Visibility="{Binding IsSingleChannel, Converter={x:Static s:BoolToVisibilityConverter.Instance}}">
                 <Run Text="{Binding Channels[0].Category.Name, Mode=OneWay}" ToolTip="{Binding Channels[0].Category.Name, Mode=OneWay}" />
                 <Run Text="/" />
@@ -68,21 +69,21 @@
         </Grid>
 
         <Border
-            Grid.Row="1"
-            Padding="0,8"
             BorderBrush="{DynamicResource MaterialDesignDivider}"
-            BorderThickness="0,1">
+            BorderThickness="0,1"
+            Grid.Row="1"
+            Padding="0,8">
             <ScrollViewer HorizontalScrollBarVisibility="Disabled" VerticalScrollBarVisibility="Auto">
                 <StackPanel>
                     <!--  Format  -->
                     <ComboBox
-                        Margin="16,8"
-                        materialDesign:HintAssist.Hint="Format"
-                        materialDesign:HintAssist.IsFloating="True"
                         IsReadOnly="True"
                         ItemsSource="{Binding AvailableFormats}"
+                        Margin="16,8"
                         SelectedItem="{Binding SelectedFormat}"
-                        Style="{DynamicResource MaterialDesignOutlinedComboBox}">
+                        Style="{DynamicResource MaterialDesignOutlinedComboBox}"
+                        materialDesign:HintAssist.Hint="Format"
+                        materialDesign:HintAssist.IsFloating="True">
                         <ComboBox.ItemTemplate>
                             <DataTemplate>
                                 <TextBlock Text="{Binding Converter={x:Static converters:ExportFormatToStringConverter.Instance}}" />
@@ -104,64 +105,66 @@
                                 <RowDefinition Height="*" />
                             </Grid.RowDefinitions>
                             <DatePicker
-                                Grid.Row="0"
-                                Grid.Column="0"
-                                Margin="16,8,16,4"
-                                materialDesign:HintAssist.Hint="After (date)"
-                                materialDesign:HintAssist.IsFloating="True"
                                 DisplayDateEnd="{Binding BeforeDate, Converter={x:Static converters:DateTimeOffsetToDateTimeConverter.Instance}}"
+                                Grid.Column="0"
+                                Grid.Row="0"
+                                Margin="16,8,16,4"
                                 SelectedDate="{Binding AfterDate, Converter={x:Static converters:DateTimeOffsetToDateTimeConverter.Instance}}"
                                 Style="{DynamicResource MaterialDesignOutlinedDatePicker}"
-                                ToolTip="Only include messages sent after this date" />
+                                ToolTip="Only include messages sent after this date"
+                                materialDesign:HintAssist.Hint="After (date)"
+                                materialDesign:HintAssist.IsFloating="True" />
                             <DatePicker
-                                Grid.Row="0"
-                                Grid.Column="1"
-                                Margin="16,8,16,4"
-                                materialDesign:HintAssist.Hint="Before (date)"
-                                materialDesign:HintAssist.IsFloating="True"
                                 DisplayDateStart="{Binding AfterDate, Converter={x:Static converters:DateTimeOffsetToDateTimeConverter.Instance}}"
+                                Grid.Column="1"
+                                Grid.Row="0"
+                                Margin="16,8,16,4"
                                 SelectedDate="{Binding BeforeDate, Converter={x:Static converters:DateTimeOffsetToDateTimeConverter.Instance}}"
                                 Style="{DynamicResource MaterialDesignOutlinedDatePicker}"
-                                ToolTip="Only include messages sent before this date" />
+                                ToolTip="Only include messages sent before this date"
+                                materialDesign:HintAssist.Hint="Before (date)"
+                                materialDesign:HintAssist.IsFloating="True" />
                             <materialDesign:TimePicker
-                                Grid.Row="1"
                                 Grid.Column="0"
-                                Margin="16,4,16,8"
-                                materialDesign:HintAssist.Hint="After (time)"
-                                materialDesign:HintAssist.IsFloating="True"
+                                Grid.Row="1"
+                                Is24Hours="{x:Static utils:Internationalization.Is24Hours}"
                                 IsEnabled="{Binding IsAfterDateSet}"
+                                Margin="16,4,16,8"
                                 SelectedTime="{Binding AfterTime, Converter={x:Static converters:TimeSpanToDateTimeConverter.Instance}}"
                                 Style="{DynamicResource MaterialDesignOutlinedTimePicker}"
-                                ToolTip="Only include messages sent after this time" />
+                                ToolTip="Only include messages sent after this time"
+                                materialDesign:HintAssist.Hint="After (time)"
+                                materialDesign:HintAssist.IsFloating="True" />
                             <materialDesign:TimePicker
-                                Grid.Row="1"
                                 Grid.Column="1"
-                                Margin="16,4,16,8"
-                                materialDesign:HintAssist.Hint="Before (time)"
-                                materialDesign:HintAssist.IsFloating="True"
+                                Grid.Row="1"
+                                Is24Hours="{x:Static utils:Internationalization.Is24Hours}"
                                 IsEnabled="{Binding IsBeforeDateSet}"
+                                Margin="16,4,16,8"
                                 SelectedTime="{Binding BeforeTime, Converter={x:Static converters:TimeSpanToDateTimeConverter.Instance}}"
                                 Style="{DynamicResource MaterialDesignOutlinedTimePicker}"
-                                ToolTip="Only include messages sent before this time" />
+                                ToolTip="Only include messages sent before this time"
+                                materialDesign:HintAssist.Hint="Before (time)"
+                                materialDesign:HintAssist.IsFloating="True" />
                         </Grid>
 
                         <!--  Partitioning  -->
                         <TextBox
                             Margin="16,8"
-                            materialDesign:HintAssist.Hint="Partition limit"
-                            materialDesign:HintAssist.IsFloating="True"
                             Style="{DynamicResource MaterialDesignOutlinedTextBox}"
                             Text="{Binding PartitionLimitValue}"
-                            ToolTip="Split output into partitions, each limited to this number of messages (e.g. '100') or file size (e.g. '10mb')" />
+                            ToolTip="Split output into partitions, each limited to this number of messages (e.g. '100') or file size (e.g. '10mb')"
+                            materialDesign:HintAssist.Hint="Partition limit"
+                            materialDesign:HintAssist.IsFloating="True" />
 
                         <!--  Filtering  -->
                         <TextBox
                             Margin="16,8"
-                            materialDesign:HintAssist.Hint="Message filter"
-                            materialDesign:HintAssist.IsFloating="True"
                             Style="{DynamicResource MaterialDesignOutlinedTextBox}"
                             Text="{Binding MessageFilterValue}"
-                            ToolTip="Only include messages that satisfy this filter (e.g. 'from:foo#1234' or 'has:image')." />
+                            ToolTip="Only include messages that satisfy this filter (e.g. 'from:foo#1234' or 'has:image')."
+                            materialDesign:HintAssist.Hint="Message filter"
+                            materialDesign:HintAssist.IsFloating="True" />
 
                         <!--  Download media  -->
                         <Grid Margin="16,16" ToolTip="Download referenced media content (user avatars, attached files, embedded images, etc)">
@@ -172,13 +175,13 @@
 
                             <TextBlock
                                 Grid.Column="0"
-                                VerticalAlignment="Center"
-                                Text="Download media" />
+                                Text="Download media"
+                                VerticalAlignment="Center" />
                             <ToggleButton
                                 Grid.Column="1"
                                 HorizontalAlignment="Right"
-                                VerticalAlignment="Center"
-                                IsChecked="{Binding ShouldDownloadMedia}" />
+                                IsChecked="{Binding ShouldDownloadMedia}"
+                                VerticalAlignment="Center" />
                         </Grid>
                     </StackPanel>
                 </StackPanel>
@@ -195,8 +198,8 @@
             </Grid.ColumnDefinitions>
 
             <Button
-                Grid.Column="0"
                 Command="{s:Action ToggleAdvancedSection}"
+                Grid.Column="0"
                 IsDefault="True"
                 ToolTip="Toggle advanced options">
                 <Button.Style>
@@ -214,17 +217,17 @@
             </Button>
 
             <Button
-                Grid.Column="2"
                 Command="{s:Action Confirm}"
                 Content="EXPORT"
+                Grid.Column="2"
                 IsDefault="True"
                 Style="{DynamicResource MaterialDesignOutlinedButton}" />
             <Button
-                Grid.Column="3"
-                Margin="8,0,0,0"
                 Command="{s:Action Close}"
                 Content="CANCEL"
+                Grid.Column="3"
                 IsCancel="True"
+                Margin="8,0,0,0"
                 Style="{DynamicResource MaterialDesignOutlinedButton}" />
         </Grid>
     </Grid>

DiscordChatExporter.Gui/Views/RootView.xaml

@@ -1,7 +1,16 @@
 <Window
+    Background="{DynamicResource MaterialDesignPaper}"
+    FocusManager.FocusedElement="{Binding ElementName=TokenValueTextBox}"
+    Height="550"
+    Icon="/DiscordChatExporter;component/favicon.ico"
+    MinWidth="325"
+    Style="{DynamicResource MaterialDesignRoot}"
+    Width="600"
+    WindowStartupLocation="CenterScreen"
+    d:DataContext="{d:DesignInstance Type=viewModels:RootViewModel}"
+    mc:Ignorable="d"
     x:Class="DiscordChatExporter.Gui.Views.RootView"
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
-    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
     xmlns:behaviors="clr-namespace:DiscordChatExporter.Gui.Behaviors"
     xmlns:componentModel="clr-namespace:System.ComponentModel;assembly=WindowsBase"
     xmlns:converters="clr-namespace:DiscordChatExporter.Gui.Converters"
@@ -11,21 +20,12 @@
     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
     xmlns:s="https://github.com/canton7/Stylet"
     xmlns:viewModels="clr-namespace:DiscordChatExporter.Gui.ViewModels"
-    Width="600"
-    Height="550"
-    MinWidth="325"
-    d:DataContext="{d:DesignInstance Type=viewModels:RootViewModel}"
-    Background="{DynamicResource MaterialDesignPaper}"
-    FocusManager.FocusedElement="{Binding ElementName=TokenValueTextBox}"
-    Icon="/DiscordChatExporter;component/favicon.ico"
-    Style="{DynamicResource MaterialDesignRoot}"
-    WindowStartupLocation="CenterScreen"
-    mc:Ignorable="d">
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
     <Window.TaskbarItemInfo>
-        <TaskbarItemInfo ProgressState="Normal" ProgressValue="{Binding ProgressManager.Progress}" />
+        <TaskbarItemInfo ProgressState="Normal" ProgressValue="{Binding Progress.Current.Fraction}" />
     </Window.TaskbarItemInfo>
     <Window.Resources>
-        <CollectionViewSource x:Key="AvailableChannelsViewSource" Source="{Binding AvailableChannels, Mode=OneWay}">
+        <CollectionViewSource Source="{Binding AvailableChannels, Mode=OneWay}" x:Key="AvailableChannelsViewSource">
             <CollectionViewSource.GroupDescriptions>
                 <PropertyGroupDescription PropertyName="Category.Name" />
             </CollectionViewSource.GroupDescriptions>
@@ -46,7 +46,7 @@
             </Grid.RowDefinitions>
 
             <!--  Toolbar  -->
-            <Grid Grid.Row="0" Background="{DynamicResource MaterialDesignDarkBackground}">
+            <Grid Background="{DynamicResource MaterialDesignDarkBackground}" Grid.Row="0">
                 <Grid.ColumnDefinitions>
                     <ColumnDefinition Width="*" />
                     <ColumnDefinition Width="Auto" />
@@ -54,8 +54,8 @@
 
                 <!--  Token and pull data button  -->
                 <materialDesign:Card
-                    Grid.Row="0"
                     Grid.Column="0"
+                    Grid.Row="0"
                     Margin="12,12,0,12">
                     <Grid>
                         <Grid.ColumnDefinitions>
@@ -66,74 +66,74 @@
 
                         <!--  Token icon  -->
                         <materialDesign:PackIcon
+                            Foreground="{DynamicResource PrimaryHueMidBrush}"
                             Grid.Column="0"
-                            Width="24"
                             Height="24"
+                            Kind="Password"
                             Margin="8"
                             VerticalAlignment="Center"
-                            Foreground="{DynamicResource PrimaryHueMidBrush}"
-                            Kind="Password" />
+                            Width="24" />
 
                         <!--  Token value  -->
                         <TextBox
-                            x:Name="TokenValueTextBox"
+                            BorderThickness="0"
+                            FontSize="16"
                             Grid.Column="1"
                             Margin="0,6,6,8"
+                            Text="{Binding Token, UpdateSourceTrigger=PropertyChanged}"
                             VerticalAlignment="Bottom"
                             materialDesign:HintAssist.Hint="Token"
                             materialDesign:TextFieldAssist.DecorationVisibility="Hidden"
                             materialDesign:TextFieldAssist.TextBoxViewMargin="0,0,2,0"
-                            BorderThickness="0"
-                            FontSize="16"
-                            Text="{Binding Token, UpdateSourceTrigger=PropertyChanged}" />
+                            x:Name="TokenValueTextBox" />
 
                         <!--  Pull data button  -->
                         <Button
+                            Command="{s:Action PopulateGuildsAndChannels}"
                             Grid.Column="2"
+                            IsDefault="True"
                             Margin="0,6,6,6"
                             Padding="4"
-                            Command="{s:Action PopulateGuildsAndChannels}"
-                            IsDefault="True"
                             Style="{DynamicResource MaterialDesignFlatButton}"
                             ToolTip="Pull available guilds and channels (Enter)">
                             <materialDesign:PackIcon
-                                Width="24"
                                 Height="24"
-                                Kind="ArrowRight" />
+                                Kind="ArrowRight"
+                                Width="24" />
                         </Button>
                     </Grid>
                 </materialDesign:Card>
 
                 <!--  Settings button  -->
                 <Button
+                    Command="{s:Action ShowSettings}"
+                    Foreground="{DynamicResource MaterialDesignDarkForeground}"
                     Grid.Column="1"
                     Margin="6"
                     Padding="4"
-                    Command="{s:Action ShowSettings}"
-                    Foreground="{DynamicResource MaterialDesignDarkForeground}"
                     Style="{DynamicResource MaterialDesignFlatButton}"
                     ToolTip="Settings">
                     <Button.Resources>
-                        <SolidColorBrush x:Key="MaterialDesignFlatButtonClick" Color="#4C4C4C" />
+                        <SolidColorBrush Color="#4C4C4C" x:Key="MaterialDesignFlatButtonClick" />
                     </Button.Resources>
                     <materialDesign:PackIcon
-                        Width="24"
                         Height="24"
-                        Kind="Settings" />
+                        Kind="Settings"
+                        Width="24" />
                 </Button>
             </Grid>
 
             <!--  Progress bar  -->
             <ProgressBar
-                Grid.Row="1"
                 Background="{DynamicResource MaterialDesignDarkBackground}"
+                Grid.Row="1"
                 IsIndeterminate="{Binding IsProgressIndeterminate}"
-                Value="{Binding ProgressManager.Progress, Mode=OneWay}" />
+                Value="{Binding Progress.Current.Fraction, Mode=OneWay}" />
 
             <!--  Content  -->
             <Grid
-                Grid.Row="2"
                 Background="{DynamicResource MaterialDesignCardBackground}"
+                Grid.Row="2"
                 IsEnabled="{Binding IsBusy, Converter={x:Static converters:InverseBoolConverter.Instance}}">
                 <Grid.Resources>
                     <Style TargetType="TextBlock">
@@ -143,7 +143,7 @@
                 <!--  Placeholder / usage instructions  -->
                 <Grid Visibility="{Binding AvailableGuilds, Converter={x:Static s:BoolToVisibilityConverter.InverseInstance}}">
                     <ScrollViewer HorizontalScrollBarVisibility="Disabled" VerticalScrollBarVisibility="Auto">
-                        <TextBlock Margin="32,16" FontSize="14">
+                        <TextBlock FontSize="14" Margin="32,16">
                             <Run FontSize="18" Text="Please provide authentication token to continue" />
                             <LineBreak />
                             <LineBreak />
@@ -151,9 +151,9 @@
                             <!--  User token  -->
                             <InlineUIContainer>
                                 <materialDesign:PackIcon
-                                    Margin="1,0,0,-2"
                                     Foreground="{DynamicResource PrimaryHueMidBrush}"
-                                    Kind="Account" />
+                                    Kind="Account"
+                                    Margin="1,0,0,-2" />
                             </InlineUIContainer>
                             <Run FontSize="16" Text="Authenticate using your personal account" />
                             <LineBreak />
@@ -199,9 +199,9 @@
                             <!--  Bot token  -->
                             <InlineUIContainer>
                                 <materialDesign:PackIcon
-                                    Margin="1,0,0,-2"
                                     Foreground="{DynamicResource PrimaryHueMidBrush}"
-                                    Kind="Robot" />
+                                    Kind="Robot"
+                                    Margin="1,0,0,-2" />
                             </InlineUIContainer>
                             <Run FontSize="16" Text="Authenticate as a bot" />
                             <LineBreak />
@@ -235,9 +235,9 @@
 
                     <!--  Guilds  -->
                     <Border
-                        Grid.Column="0"
                         BorderBrush="{DynamicResource MaterialDesignDivider}"
-                        BorderThickness="0,0,1,0">
+                        BorderThickness="0,0,1,0"
+                        Grid.Column="0">
                         <ListBox
                             ItemsSource="{Binding AvailableGuilds}"
                             ScrollViewer.VerticalScrollBarVisibility="Hidden"
@@ -246,24 +246,24 @@
                             <ListBox.ItemTemplate>
                                 <DataTemplate>
                                     <Grid
-                                        Margin="-8"
                                         Background="Transparent"
                                         Cursor="Hand"
+                                        Margin="-8"
                                         ToolTip="{Binding Name}">
                                         <!--  Guild icon placeholder  -->
                                         <Ellipse
-                                            Width="48"
+                                            Fill="{DynamicResource MaterialDesignDivider}"
                                             Height="48"
                                             Margin="12,4,12,4"
-                                            Fill="{DynamicResource MaterialDesignDivider}" />
+                                            Width="48" />
 
                                         <!--  Guild icon  -->
                                         <Ellipse
-                                            Width="48"
                                             Height="48"
                                             Margin="12,4,12,4"
                                             Stroke="{DynamicResource MaterialDesignDivider}"
-                                            StrokeThickness="1">
+                                            StrokeThickness="1"
+                                            Width="48">
                                             <Ellipse.Fill>
                                                 <ImageBrush ImageSource="{Binding IconUrl}" />
                                             </Ellipse.Fill>
@@ -293,13 +293,13 @@
                                                 <Setter.Value>
                                                     <ControlTemplate d:DataContext="{x:Type CollectionViewGroup}">
                                                         <Expander
-                                                            Margin="0"
-                                                            Padding="0"
                                                             Background="Transparent"
                                                             BorderBrush="{DynamicResource MaterialDesignDivider}"
                                                             BorderThickness="0,0,0,1"
                                                             Header="{Binding Name}"
-                                                            IsExpanded="False">
+                                                            IsExpanded="False"
+                                                            Margin="0"
+                                                            Padding="0">
                                                             <ItemsPresenter />
                                                         </Expander>
                                                     </ControlTemplate>
@@ -311,7 +311,7 @@
                             </ListBox.GroupStyle>
                             <ListBox.ItemTemplate>
                                 <DataTemplate>
-                                    <Grid Margin="-8" Background="Transparent">
+                                    <Grid Background="Transparent" Margin="-8">
                                         <Grid.InputBindings>
                                             <MouseBinding Command="{s:Action ExportChannels}" MouseAction="LeftDoubleClick" />
                                         </Grid.InputBindings>
@@ -324,27 +324,27 @@
                                         <!--  Channel icon  -->
                                         <materialDesign:PackIcon
                                             Grid.Column="0"
+                                            Kind="Pound"
                                             Margin="16,7,0,6"
-                                            VerticalAlignment="Center"
-                                            Kind="Pound" />
+                                            VerticalAlignment="Center" />
 
                                         <!--  Channel name  -->
                                         <TextBlock
+                                            FontSize="14"
                                             Grid.Column="1"
                                             Margin="3,8,8,8"
-                                            VerticalAlignment="Center"
-                                            FontSize="14"
-                                            Text="{Binding Name, Mode=OneWay}" />
+                                            Text="{Binding Name, Mode=OneWay}"
+                                            VerticalAlignment="Center" />
 
                                         <!--  Is selected checkmark  -->
                                         <materialDesign:PackIcon
                                             Grid.Column="2"
-                                            Width="24"
                                             Height="24"
+                                            Kind="Check"
                                             Margin="8,0"
                                             VerticalAlignment="Center"
-                                            Kind="Check"
-                                            Visibility="{Binding IsSelected, RelativeSource={RelativeSource AncestorType={x:Type ListBoxItem}}, Converter={x:Static s:BoolToVisibilityConverter.Instance}, Mode=OneWay}" />
+                                            Visibility="{Binding IsSelected, RelativeSource={RelativeSource AncestorType={x:Type ListBoxItem}}, Converter={x:Static s:BoolToVisibilityConverter.Instance}, Mode=OneWay}"
+                                            Width="24" />
                                     </Grid>
                                 </DataTemplate>
                             </ListBox.ItemTemplate>
@@ -354,16 +354,16 @@
 
                 <!--  Export button  -->
                 <Button
-                    Margin="32,24"
-                    HorizontalAlignment="Right"
-                    VerticalAlignment="Bottom"
                     Command="{s:Action ExportChannels}"
+                    HorizontalAlignment="Right"
+                    Margin="32,24"
                     Style="{DynamicResource MaterialDesignFloatingActionAccentButton}"
+                    VerticalAlignment="Bottom"
                     Visibility="{Binding CanExportChannels, Converter={x:Static s:BoolToVisibilityConverter.Instance}}">
                     <materialDesign:PackIcon
-                        Width="32"
                         Height="32"
-                        Kind="Download" />
+                        Kind="Download"
+                        Width="32" />
                 </Button>
 
                 <!--  Notifications snackbar  -->

Readme.md

@@ -6,15 +6,25 @@
 [![Downloads](https://img.shields.io/github/downloads/Tyrrrz/DiscordChatExporter/total.svg)](https://github.com/Tyrrrz/DiscordChatExporter/releases)
 [![Discord](https://img.shields.io/discord/869237470565392384?label=discord)](https://discord.gg/2SUWKFnHSm)
 [![Donate](https://img.shields.io/badge/donate-$$$-purple.svg)](https://tyrrrz.me/donate)
+[![Fuck Russia](https://img.shields.io/badge/fuck-russia-black.svg)](https://twitter.com/Tyrrrz/status/1495972128977571848)
 
-✅ **Project status: active**. [What does it mean?](https://github.com/Tyrrrz/.github/blob/master/docs/project-status.md)
+✅ **Project status: active**<sup>[[?]](https://github.com/Tyrrrz/.github/blob/master/docs/project-status.md)</sup>
 
 **DiscordChatExporter** can be used to export message history from a [Discord](https://discord.com) channel to a file.
 It works with direct messages, group messages, and server channels, and supports Discord's dialect of markdown as well as all other rich media features.
 
-❓ **If you have questions or issues, please refer to the [wiki](https://github.com/Tyrrrz/DiscordChatExporter/wiki)**.
+❓ **If you have questions or issues, please refer to the [wiki](https://github.com/Tyrrrz/DiscordChatExporter/wiki)**
 
-💬 **If you want to chat, join my [Discord server](https://discord.gg/2SUWKFnHSm)**.
+## Terms of use
+
+By using this project or its source code, for any purpose and in any shape or form, you grant your **implicit agreement** to all the following statements:
+
+- You **condemn Russia and its military aggression against Ukraine**
+- You **recognize that Russia is an occupant that unlawfully invaded a sovereign state**
+- You **support Ukraine's territorial integrity, including its claims over temporarily occupied territories of Crimea and Donbas**
+- You **reject false narratives perpetuated by Russian state propaganda**
+
+To learn more about the war and how you can help, [click here](https://tyrrrz.me). Glory to Ukraine! 🇺🇦
 
 ## Download
 
@@ -115,4 +125,4 @@ To do that, navigate to its directory and use `dotnet run`:
 ```sh
 > cd DiscordChatExporter.Gui
 > dotnet run
-```
+```