Update version

Closes #695

.github/FUNDING.yml

@@ -1,3 +0,0 @@
-github: Tyrrrz
-patreon: Tyrrrz
-custom: ['buymeacoffee.com/Tyrrrz', 'tyrrrz.me/donate']

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,17 +0,0 @@
-<!--
-
-**Important:**
-
-Please make sure that there is an existing issue that describes the problem solved by your pull request. If there isn't one, consider creating it first.
-An open issue offers a good place to iron out requirements, discuss possible solutions, and ask questions.
-
-Remember to also:
-
-- Keep your pull request focused and as small as possible. If you want to contribute multiple unrelated changes, please create separate pull requests for them.
-- Follow the coding style and conventions already established by the project. When in doubt about which style to use, ask in the comments to your pull request.
-- If you want to start a discussion regarding a specific change you've made, add a review comment to your own code. This can be used to highlight something important or to seek further input from others.
-
--->
-
-<!-- Please specify the issue addressed by this pull request -->
-Closes #ISSUE_NUMBER

.github/workflows/CD-Docker.yml

@@ -1,30 +0,0 @@
-name: Docker CD
-
-on:
-  push:
-    tags:
-      - "*"
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v2.3.3
-
-      - name: Get release version
-        id: get_version
-        uses: dawidd6/action-get-tag@v1
-
-      - name: Login
-        run: docker login -u tyrrrz -p ${{ secrets.DOCKER_TOKEN }}
-
-      - name: Build
-        run: docker build -t tyrrrz/discordchatexporter:${{ steps.get_version.outputs.tag }} -t tyrrrz/discordchatexporter:stable .
-
-      - name: Deploy (version)
-        run: docker push tyrrrz/discordchatexporter:${{ steps.get_version.outputs.tag }}
-
-      - name: Deploy (stable)
-        run: docker push tyrrrz/discordchatexporter:stable

.github/workflows/CD.yml

@@ -1,84 +0,0 @@
-name: CD
-
-on:
-  push:
-    tags:
-      - "*"
-
-jobs:
-  build:
-    runs-on: windows-latest
-
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v2.3.3
-
-      - name: Get release version
-        id: get_version
-        uses: dawidd6/action-get-tag@v1
-
-      - name: Install .NET
-        uses: actions/setup-dotnet@v1.7.2
-        with:
-          dotnet-version: 6.0.x
-
-      - name: Build & publish (CLI)
-        run: dotnet publish DiscordChatExporter.Cli/ -o DiscordChatExporter.Cli/bin/Publish/ --configuration Release
-
-      - name: Build & publish (GUI)
-        run: dotnet publish DiscordChatExporter.Gui/ -o DiscordChatExporter.Gui/bin/Publish/ --configuration Release
-
-      - name: Pack (CLI)
-        run: Compress-Archive -Path DiscordChatExporter.Cli/bin/Publish/* -DestinationPath DiscordChatExporter.Cli/bin/Publish/Archive.zip -Force
-        shell: pwsh
-
-      - name: Pack (GUI)
-        run: Compress-Archive -Path DiscordChatExporter.Gui/bin/Publish/* -DestinationPath DiscordChatExporter.Gui/bin/Publish/Archive.zip -Force
-        shell: pwsh
-
-      - name: Create release
-        id: create_release
-        uses: actions/create-release@v1.0.1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          tag_name: ${{ github.ref }}
-          release_name: ${{ github.ref }}
-          body: |
-            [Changelog](https://github.com/Tyrrrz/DiscordChatExporter/blob/master/Changelog.md)
-          draft: false
-          prerelease: false
-
-      - name: Upload release asset (CLI)
-        uses: actions/upload-release-asset@v1.0.2
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          upload_url: ${{ steps.create_release.outputs.upload_url }}
-          asset_path: DiscordChatExporter.Cli/bin/Publish/Archive.zip
-          asset_name: DiscordChatExporter.CLI.zip
-          asset_content_type: application/zip
-
-      - name: Upload release asset (GUI)
-        uses: actions/upload-release-asset@v1.0.2
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          upload_url: ${{ steps.create_release.outputs.upload_url }}
-          asset_path: DiscordChatExporter.Gui/bin/Publish/Archive.zip
-          asset_name: DiscordChatExporter.zip
-          asset_content_type: application/zip
-
-      - name: Notify Discord
-        uses: satak/webrequest-action@v1.2.4
-        with:
-          url: ${{ secrets.DISCORD_WEBHOOK }}
-          method: POST
-          headers: |
-            {
-              "ContentType": "application/json; charset=UTF-8"
-            }
-          payload: |
-            {
-              "content": "**DiscordChatExporter** new version released!\nVersion: `${{ steps.get_version.outputs.tag }}`\nChangelog: <https://github.com/Tyrrrz/DiscordChatExporter/blob/${{ steps.get_version.outputs.tag }}/Changelog.md>"
-            }

.github/workflows/CI-Docker.yml

@@ -1,23 +0,0 @@
-name: Docker CI
-
-on:
-  push:
-    branches:
-      - master
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v2.3.3
-
-      - name: Login
-        run: docker login -u tyrrrz -p ${{ secrets.DOCKER_TOKEN }}
-
-      - name: Build
-        run: docker build -t tyrrrz/discordchatexporter:latest .
-
-      - name: Deploy (latest)
-        run: docker push tyrrrz/discordchatexporter:latest

.github/workflows/CI.yml

@@ -1,47 +0,0 @@
-name: CI
-
-on: [push, pull_request]
-
-jobs:
-  build:
-    runs-on: windows-latest
-
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v2.3.3
-
-      - name: Install .NET
-        uses: actions/setup-dotnet@v1.7.2
-        with:
-          dotnet-version: 6.0.x
-
-      - name: Build & test
-        # Tests need access to secrets, so we can't run them against PRs because of limited trust
-        if: ${{ github.event_name != 'pull_request' }}
-        run: dotnet test --configuration Release --logger GitHubActions
-        env:
-          DISCORD_TOKEN: ${{ secrets.DISCORD_TOKEN }}
-          DISCORD_TOKEN_BOT: true
-
-      - name: Upload coverage
-        uses: codecov/codecov-action@v1.0.5
-        with:
-          token: ${{ secrets.CODECOV_TOKEN }}
-
-      - name: Build & publish (CLI)
-        run: dotnet publish DiscordChatExporter.Cli/ -o DiscordChatExporter.Cli/bin/Publish/ --configuration Release
-
-      - name: Build & publish (GUI)
-        run: dotnet publish DiscordChatExporter.Gui/ -o DiscordChatExporter.Gui/bin/Publish/ --configuration Release
-
-      - name: Upload build artifacts (CLI)
-        uses: actions/upload-artifact@v1
-        with:
-          name: DiscordChatExporter.CLI
-          path: DiscordChatExporter.Cli/bin/Publish/
-
-      - name: Upload build artifact (GUI)
-        uses: actions/upload-artifact@v1
-        with:
-          name: DiscordChatExporter
-          path: DiscordChatExporter.Gui/bin/Publish/

.github/workflows/docker.yml

@@ -0,0 +1,55 @@
+name: docker
+
+on: [push, pull_request]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Build container
+        run: docker build -f DiscordChatExporter.Cli.dockerfile .
+
+  deploy-latest:
+    if: ${{ github.event_name == 'push' && github.ref_type == 'branch' && github.ref_name == 'master' }}
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Login to DockerHub
+        run: docker login -u tyrrrz -p ${{ secrets.DOCKER_TOKEN }}
+
+      - name: Build container
+        run: docker build -f DiscordChatExporter.Cli.dockerfile -t tyrrrz/discordchatexporter:latest .
+
+      - name: Push container
+        run: docker push tyrrrz/discordchatexporter:latest
+
+  deploy-stable:
+    if: ${{ github.event_name == 'push' && github.ref_type == 'tag' }}
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Get release version
+        id: get_version
+        uses: dawidd6/action-get-tag@v1
+
+      - name: Login to DockerHub
+        run: docker login -u tyrrrz -p ${{ secrets.DOCKER_TOKEN }}
+
+      - name: Build container
+        run: docker build -f DiscordChatExporter.Cli.dockerfile -t tyrrrz/discordchatexporter:stable -t tyrrrz/discordchatexporter:${{ steps.get_version.outputs.tag }} .
+
+      - name: Push container (stable)
+        run: docker push tyrrrz/discordchatexporter:stable
+
+      - name: Push container (${{ steps.get_version.outputs.tag }})
+        run: docker push tyrrrz/discordchatexporter:${{ steps.get_version.outputs.tag }}

.github/workflows/main.yml

@@ -0,0 +1,154 @@
+name: main
+
+on: [push, pull_request]
+
+jobs:
+  test:
+    runs-on: windows-latest
+
+    env:
+      DOTNET_SKIP_FIRST_TIME_EXPERIENCE: true
+      DOTNET_NOLOGO: true
+      DOTNET_CLI_TELEMETRY_OPTOUT: true
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Install .NET
+        uses: actions/setup-dotnet@v2
+        with:
+          # Fixed version, workaround for https://github.com/dotnet/core/issues/7176
+          dotnet-version: 6.0.100
+
+      - name: Run tests
+        # Tests need access to secrets, so we can't run them against PRs because of limited trust
+        if: ${{ github.event_name != 'pull_request' }}
+        run: dotnet test --configuration Release --logger GitHubActions --collect:"XPlat Code Coverage" -- DataCollectionRunSettings.DataCollectors.DataCollector.Configuration.Format=opencover
+        env:
+          DISCORD_TOKEN: ${{ secrets.DISCORD_TOKEN }}
+          DISCORD_TOKEN_BOT: true
+
+      - name: Upload coverage
+        uses: codecov/codecov-action@v3
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+
+  publish:
+    needs: test
+    runs-on: windows-latest
+
+    env:
+      DOTNET_SKIP_FIRST_TIME_EXPERIENCE: true
+      DOTNET_NOLOGO: true
+      DOTNET_CLI_TELEMETRY_OPTOUT: true
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Install .NET
+        uses: actions/setup-dotnet@v2
+        with:
+          # Fixed version, workaround for https://github.com/dotnet/core/issues/7176
+          dotnet-version: 6.0.100
+
+      - name: Publish (CLI)
+        run: dotnet publish DiscordChatExporter.Cli/ -o DiscordChatExporter.Cli/bin/Publish/ --configuration Release
+
+      - name: Publish (GUI)
+        run: dotnet publish DiscordChatExporter.Gui/ -o DiscordChatExporter.Gui/bin/Publish/ --configuration Release
+
+      - name: Upload artifacts (CLI)
+        uses: actions/upload-artifact@v3
+        with:
+          name: DiscordChatExporter.Cli
+          path: DiscordChatExporter.Cli/bin/Publish/
+
+      - name: Upload artifacts (GUI)
+        uses: actions/upload-artifact@v3
+        with:
+          name: DiscordChatExporter
+          path: DiscordChatExporter.Gui/bin/Publish/
+
+  deploy:
+    if: ${{ github.event_name == 'push' && github.ref_type == 'tag' }}
+    needs: publish
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Download artifacts (CLI)
+        uses: actions/download-artifact@v3
+        with:
+          name: DiscordChatExporter.Cli
+          path: DiscordChatExporter.Cli
+
+      - name: Download artifacts (GUI)
+        uses: actions/download-artifact@v3
+        with:
+          name: DiscordChatExporter
+          path: DiscordChatExporter.Gui
+
+      - name: Create package (CLI)
+        run: Compress-Archive -Path DiscordChatExporter.Cli/* -DestinationPath DiscordChatExporter.Cli.zip -Force
+        shell: pwsh
+
+      - name: Create package (GUI)
+        run: Compress-Archive -Path DiscordChatExporter.Gui/* -DestinationPath DiscordChatExporter.Gui.zip -Force
+        shell: pwsh
+
+      - name: Create release
+        id: create_release
+        uses: actions/create-release@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: ${{ github.ref }}
+          release_name: ${{ github.ref }}
+          body: |
+            [Changelog](https://github.com/Tyrrrz/DiscordChatExporter/blob/master/Changelog.md)
+          draft: false
+          prerelease: false
+
+      - name: Upload release asset (CLI)
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_name: DiscordChatExporter.Cli.zip
+          asset_path: DiscordChatExporter.Cli.zip
+          asset_content_type: application/zip
+
+      - name: Upload release asset (GUI)
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_name: DiscordChatExporter.zip
+          asset_path: DiscordChatExporter.Gui.zip
+          asset_content_type: application/zip
+
+  notify:
+    needs: deploy
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Get release version
+        id: get_version
+        uses: dawidd6/action-get-tag@v1
+
+      - name: Notify Discord
+        uses: satak/webrequest-action@v1.2.4
+        with:
+          url: ${{ secrets.DISCORD_WEBHOOK }}
+          method: POST
+          headers: |
+            {
+              "ContentType": "application/json; charset=UTF-8"
+            }
+          payload: |
+            {
+              "content": "**DiscordChatExporter** new version released!\nVersion: `${{ steps.get_version.outputs.tag }}`\nChangelog: <https://github.com/Tyrrrz/DiscordChatExporter/blob/${{ steps.get_version.outputs.tag }}/Changelog.md>"
+            }

Changelog.md

@@ -1,3 +1,72 @@
+### v2.35 (02-Jul-2022)
+
+- Added support for exporting text chat in voice channels. These channels are now also displayed when browsing in the GUI and in the CLI when executing the `channels` command.
+- [GUI] Direct message channels are now sorted by the timestamp of their last message, similarly to how they appear in the Discord client.
+- [GUI] Removed artificial grouping of direct message channels into "Private" and "Group".
+- [CLI] Added runtime bootstrapper capabilities to the CLI flavor of DiscordChatExporter on Windows. Now, if you attempt to run the application without the required prerequisites installed, you will be provided with an option to install them automatically.
+- [CLI] Fixed outdated information in the usage guide. (Thanks [@Clint Herron](https://github.com/HanClinto))
+- [CLI] Added whitespace padding to the output of `guilds`, `channels`, and `dm` to make the tables look more uniform.
+- [HTML] Added hyperlinks to message timestamps, which allows you to quickly copy a link to a specific message in the export. (Thanks [@Philipp C. Heckel](https://github.com/binwiederhier))
+- [HTML] Added minification. Chat exports in HTML format are now 30-35% smaller than before.
+- [HTML] Added support for rendering embeds of Twitter posts that contain multiple images. Previously, this resulted in multiple separate embeds instead of one.
+- [HTML] Added support for rendering embeds of YouTube Shorts videos.
+- [HTML] Text content is now hidden if the message only contains a link to an image and nothing else. The link itself is resolved as an image embed.
+- [HTML] Fixed an issue where some emoji that included a zero-width-joiner rune were not rendered correctly due to a wrong Twemoji URL being generated. (Thanks [@Ethan](https://github.com/ethanndickson))
+- [HTML] Fixed an issue where replies to a message that contained a quote (i.e. `>`) were not rendered correctly.
+- [HTML] Fixed an issue where code blocks with language highlighting did not have the correct background color.
+- Added file name template token that resolves to the current date (`%d`). (Thanks [@Lucas LaBuff](https://github.com/96-LB))
+- Updated the usage guide to replace the instructions for retrieving the user token with those that appear to work for more people.
+- Updated the usage guide to feature the TOS warning more prominently.
+
+### v2.34.1 (01-Jun-2022)
+
+- Improved retry policy to handle more transient errors. This should result in fewer errors exporting a channel due to timeout.
+- Added `has:pin` message filter. You can use it to limit exported messages to those that have been pinned. (Thanks [@Andrew Kolos](https://github.com/andrewkolos))
+- Fixed an issue which caused the export to fail when processing stickers that have no name.
+
+### v2.34 (10-Apr-2022)
+
+- [HTML] Reworked layout to be more consistent with Discord.
+- [HTML] Changed user profile picture dimensions from `128x128` to `512x512`. (Thanks [@Chris Helder](https://github.com/TheDude53))
+- [HTML] Improved image scaling for Chromium-based browsers. This should result in higher quality images across the entire export.
+- [HTML] Hovering over messages will now show short timestamps on the left, indicating the time that the individual messages of the group were sent.
+- [HTML] Using "download media" option will now also download scripts, styles, fonts, and other similar resources used by the export.
+- [HTML] Image attachments will now use the provided description as alt text.
+- [HTML] Fixed a few layout inconsistencies related to embeds.
+- [GUI] Added a few clickable links to the usage guide to make the process of locating tokens easier.
+
+### v2.33.2 (07-Mar-2022)
+
+- Actually fixed it this time.
+
+### v2.33.1 (07-Mar-2022)
+
+- Fixed an issue where the application silently failed to run if the system didn't have .NET Runtime 6.0.2 installed. If you continue seeing this issue, please uninstall all existing .NET runtimes from your computer and then try running the application again.
+
+### 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))
+- Fixed an issue which caused an error when parsing invalid date timestamps. Such timestamps are now rendered as "Invalid date", similarly to how the Discord client does it.
+- Fixed an issue which caused an error when parsing certain embed fields.
+- Fixed an issue which caused an error when parsing a mention to a user that has no username.
+- [GUI] Minor visual fixes.
+
+### v2.31.1 (15-Dec-2021)
+
+- Fixed an issue which caused an error when parsing certain custom emoji reactions.
+- [GUI] Improved user interface.
+
 ### v2.31 (06-Dec-2021)
 
 - Changed target runtime of the application (both GUI and CLI) from .NET 3.1 to .NET 6. Those using the GUI version will not need to take any action as the application should install the necessary prerequisites automatically. Those using the CLI version will need to download and install .NET 6 runtime manually [from here](https://dotnet.microsoft.com/download/dotnet/6.0) (look for ".NET Runtime 6.0.x" section on the right and choose the distribution appropriate for your system).

Directory.Build.props

@@ -2,9 +2,9 @@
 
   <PropertyGroup>
     <TargetFramework>net6.0</TargetFramework>
-    <Version>2.31</Version>
+    <Version>2.35</Version>
     <Company>Tyrrrz</Company>
-    <Copyright>Copyright (c) Alexey Golub</Copyright>
+    <Copyright>Copyright (c) Oleksii Holub</Copyright>
     <LangVersion>preview</LangVersion>
     <Nullable>enable</Nullable>
     <WarningsAsErrors>nullable</WarningsAsErrors>

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

@@ -1,28 +1,25 @@
 <Project Sdk="Microsoft.NET.Sdk">
-  
+
   <PropertyGroup>
     <IsPackable>false</IsPackable>
     <IsTestProject>true</IsTestProject>
-    <CollectCoverage>true</CollectCoverage>
-    <CoverletOutputFormat>opencover</CoverletOutputFormat>
-    <NoWarn>$(NoWarn);xUnit1013</NoWarn>
   </PropertyGroup>
-  
+
   <ItemGroup>
     <Content Include="xunit.runner.json" CopyToOutputDirectory="PreserveNewest" />
     <None Include="*.secret" CopyToOutputDirectory="PreserveNewest" />
   </ItemGroup>
-  
+
   <ItemGroup>
-    <PackageReference Include="AngleSharp" Version="0.16.1" />
-    <PackageReference Include="FluentAssertions" Version="6.2.0" />
-    <PackageReference Include="GitHubActionsTestLogger" Version="1.2.0" />
+    <PackageReference Include="AngleSharp" Version="0.17.1" />
+    <PackageReference Include="FluentAssertions" Version="6.7.0" />
+    <PackageReference Include="GitHubActionsTestLogger" Version="2.0.1" PrivateAssets="all" />
     <PackageReference Include="JsonExtensions" Version="1.2.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.0.0" />
-    <PackageReference Include="coverlet.msbuild" Version="3.1.0" PrivateAssets="all" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.2.0" />
     <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" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.5" PrivateAssets="all" />
+    <PackageReference Include="coverlet.collector" Version="3.1.2" PrivateAssets="all" />
   </ItemGroup>
 
   <ItemGroup>

DiscordChatExporter.Cli.Tests/Fixtures/ExportWrapperFixture.cs

@@ -14,80 +14,67 @@ using DiscordChatExporter.Core.Discord;
 using DiscordChatExporter.Core.Exporting;
 using JsonExtensions;
 
-namespace DiscordChatExporter.Cli.Tests.Fixtures
+namespace DiscordChatExporter.Cli.Tests.Fixtures;
+
+public class ExportWrapperFixture : IDisposable
 {
-    public class ExportWrapperFixture : IDisposable
+    private string DirPath { get; } = Path.Combine(
+        Path.GetDirectoryName(typeof(ExportWrapperFixture).Assembly.Location) ?? Directory.GetCurrentDirectory(),
+        "ExportCache",
+        Guid.NewGuid().ToString()
+    );
+
+    public ExportWrapperFixture() => DirectoryEx.Reset(DirPath);
+
+    private async ValueTask<string> ExportAsync(Snowflake channelId, ExportFormat format)
     {
-        private string DirPath { get; } = Path.Combine(
-            Path.GetDirectoryName(typeof(ExportWrapperFixture).Assembly.Location) ?? Directory.GetCurrentDirectory(),
-            "ExportCache",
-            Guid.NewGuid().ToString()
-        );
+        var fileName = channelId.ToString() + '.' + format.GetFileExtension();
+        var filePath = Path.Combine(DirPath, fileName);
 
-        public ExportWrapperFixture() => DirectoryEx.Reset(DirPath);
-
-        private async ValueTask<string> ExportAsync(Snowflake channelId, ExportFormat format)
+        // Perform export only if it hasn't been done before
+        if (!File.Exists(filePath))
         {
-            var fileName = channelId.ToString() + '.' + format.GetFileExtension();
-            var filePath = Path.Combine(DirPath, fileName);
-
-            // Perform export only if it hasn't been done before
-            if (!File.Exists(filePath))
+            await new ExportChannelsCommand
             {
-                await new ExportChannelsCommand
-                {
-                    TokenValue = Secrets.DiscordToken,
-                    IsBotToken = Secrets.IsDiscordTokenBot,
-                    ChannelIds = new[] { channelId },
-                    ExportFormat = format,
-                    OutputPath = filePath
-                }.ExecuteAsync(new FakeConsole());
-            }
-
-            return await File.ReadAllTextAsync(filePath);
+                Token = Secrets.DiscordToken,
+                ChannelIds = new[] { channelId },
+                ExportFormat = format,
+                OutputPath = filePath
+            }.ExecuteAsync(new FakeConsole());
         }
 
-        public async ValueTask<IHtmlDocument> ExportAsHtmlAsync(Snowflake channelId)
-        {
-            var data = await ExportAsync(channelId, ExportFormat.HtmlDark);
-            return Html.Parse(data);
-        }
+        return await File.ReadAllTextAsync(filePath);
+    }
 
-        public async ValueTask<JsonElement> ExportAsJsonAsync(Snowflake channelId)
-        {
-            var data = await ExportAsync(channelId, ExportFormat.Json);
-            return Json.Parse(data);
-        }
+    public async ValueTask<IHtmlDocument> ExportAsHtmlAsync(Snowflake channelId) => Html.Parse(
+        await ExportAsync(channelId, ExportFormat.HtmlDark)
+    );
 
-        public async ValueTask<string> ExportAsPlainTextAsync(Snowflake channelId)
-        {
-            var data = await ExportAsync(channelId, ExportFormat.PlainText);
-            return data;
-        }
+    public async ValueTask<JsonElement> ExportAsJsonAsync(Snowflake channelId) => Json.Parse(
+        await ExportAsync(channelId, ExportFormat.Json)
+    );
 
-        public async ValueTask<string> ExportAsCsvAsync(Snowflake channelId)
-        {
-            var data = await ExportAsync(channelId, ExportFormat.Csv);
-            return data;
-        }
+    public async ValueTask<string> ExportAsPlainTextAsync(Snowflake channelId) =>
+        await ExportAsync(channelId, ExportFormat.PlainText);
 
-        public async ValueTask<IReadOnlyList<IElement>> GetMessagesAsHtmlAsync(Snowflake channelId)
-        {
-            var document = await ExportAsHtmlAsync(channelId);
-            return document.QuerySelectorAll("[data-message-id]").ToArray();
-        }
+    public async ValueTask<string> ExportAsCsvAsync(Snowflake channelId) =>
+        await ExportAsync(channelId, ExportFormat.Csv);
 
-        public async ValueTask<IReadOnlyList<JsonElement>> GetMessagesAsJsonAsync(Snowflake channelId)
-        {
-            var document = await ExportAsJsonAsync(channelId);
-            return document.GetProperty("messages").EnumerateArray().ToArray();
-        }
+    public async ValueTask<IReadOnlyList<IElement>> GetMessagesAsHtmlAsync(Snowflake channelId) =>
+        (await ExportAsHtmlAsync(channelId))
+        .QuerySelectorAll("[data-message-id]")
+        .ToArray();
 
-        public async ValueTask<IElement> GetMessageAsHtmlAsync(Snowflake channelId, Snowflake messageId)
-        {
-            var messages = await GetMessagesAsHtmlAsync(channelId);
+    public async ValueTask<IReadOnlyList<JsonElement>> GetMessagesAsJsonAsync(Snowflake channelId) =>
+        (await ExportAsJsonAsync(channelId))
+        .GetProperty("messages")
+        .EnumerateArray()
+        .ToArray();
 
-            var message = messages.SingleOrDefault(e =>
+    public async ValueTask<IElement> GetMessageAsHtmlAsync(Snowflake channelId, Snowflake messageId)
+    {
+        var message = (await GetMessagesAsHtmlAsync(channelId))
+            .SingleOrDefault(e =>
                 string.Equals(
                     e.GetAttribute("data-message-id"),
                     messageId.ToString(),
@@ -95,21 +82,20 @@ namespace DiscordChatExporter.Cli.Tests.Fixtures
                 )
             );
 
-            if (message is null)
-            {
-                throw new InvalidOperationException(
-                    $"Message '{messageId}' does not exist in export of channel '{channelId}'."
-                );
-            }
-
-            return message;
+        if (message is null)
+        {
+            throw new InvalidOperationException(
+                $"Message '{messageId}' does not exist in the export of channel '{channelId}'."
+            );
         }
 
-        public async ValueTask<JsonElement> GetMessageAsJsonAsync(Snowflake channelId, Snowflake messageId)
-        {
-            var messages = await GetMessagesAsJsonAsync(channelId);
+        return message;
+    }
 
-            var message = messages.FirstOrDefault(j =>
+    public async ValueTask<JsonElement> GetMessageAsJsonAsync(Snowflake channelId, Snowflake messageId)
+    {
+        var message = (await GetMessagesAsJsonAsync(channelId))
+            .SingleOrDefault(j =>
                 string.Equals(
                     j.GetProperty("id").GetString(),
                     messageId.ToString(),
@@ -117,16 +103,15 @@ namespace DiscordChatExporter.Cli.Tests.Fixtures
                 )
             );
 
-            if (message.ValueKind == JsonValueKind.Undefined)
-            {
-                throw new InvalidOperationException(
-                    $"Message '{messageId}' does not exist in export of channel '{channelId}'."
-                );
-            }
-
-            return message;
+        if (message.ValueKind == JsonValueKind.Undefined)
+        {
+            throw new InvalidOperationException(
+                $"Message '{messageId}' does not exist in the export of channel '{channelId}'."
+            );
         }
 
-        public void Dispose() => DirectoryEx.DeleteIfExists(DirPath);
+        return message;
     }
+
+    public void Dispose() => DirectoryEx.DeleteIfExists(DirPath);
 }

DiscordChatExporter.Cli.Tests/Fixtures/TempOutputFixture.cs

@@ -2,22 +2,21 @@
 using System.IO;
 using DiscordChatExporter.Cli.Tests.Utils;
 
-namespace DiscordChatExporter.Cli.Tests.Fixtures
+namespace DiscordChatExporter.Cli.Tests.Fixtures;
+
+public class TempOutputFixture : IDisposable
 {
-    public class TempOutputFixture : IDisposable
-    {
-        public string DirPath { get; } = Path.Combine(
-            Path.GetDirectoryName(typeof(TempOutputFixture).Assembly.Location) ?? Directory.GetCurrentDirectory(),
-            "Temp",
-            Guid.NewGuid().ToString()
-        );
+    public string DirPath { get; } = Path.Combine(
+        Path.GetDirectoryName(typeof(TempOutputFixture).Assembly.Location) ?? Directory.GetCurrentDirectory(),
+        "Temp",
+        Guid.NewGuid().ToString()
+    );
 
-        public TempOutputFixture() => DirectoryEx.Reset(DirPath);
+    public TempOutputFixture() => DirectoryEx.Reset(DirPath);
 
-        public string GetTempFilePath(string fileName) => Path.Combine(DirPath, fileName);
+    public string GetTempFilePath(string fileName) => Path.Combine(DirPath, fileName);
 
-        public string GetTempFilePath() => GetTempFilePath(Guid.NewGuid() + ".tmp");
+    public string GetTempFilePath() => GetTempFilePath(Guid.NewGuid() + ".tmp");
 
-        public void Dispose() => DirectoryEx.DeleteIfExists(DirPath);
-    }
+    public void Dispose() => DirectoryEx.DeleteIfExists(DirPath);
 }

DiscordChatExporter.Cli.Tests/Infra/Secrets.cs

@@ -1,46 +1,26 @@
 using System;
 using System.IO;
 
-namespace DiscordChatExporter.Cli.Tests.Infra
+namespace DiscordChatExporter.Cli.Tests.Infra;
+
+internal static class Secrets
 {
-    internal static class Secrets
+    private static readonly Lazy<string> DiscordTokenLazy = new(() =>
     {
-        private static readonly Lazy<string> DiscordTokenLazy = new(() =>
-        {
-            var fromEnvironment = Environment.GetEnvironmentVariable("DISCORD_TOKEN");
-            if (!string.IsNullOrWhiteSpace(fromEnvironment))
-                return fromEnvironment;
+        var fromEnvironment = Environment.GetEnvironmentVariable("DISCORD_TOKEN");
+        if (!string.IsNullOrWhiteSpace(fromEnvironment))
+            return fromEnvironment;
 
-            var secretFilePath = Path.Combine(
-                Path.GetDirectoryName(typeof(Secrets).Assembly.Location) ?? Directory.GetCurrentDirectory(),
-                "DiscordToken.secret"
-            );
+        var secretFilePath = Path.Combine(
+            Path.GetDirectoryName(typeof(Secrets).Assembly.Location) ?? Directory.GetCurrentDirectory(),
+            "DiscordToken.secret"
+        );
 
-            if (File.Exists(secretFilePath))
-                return File.ReadAllText(secretFilePath);
+        if (File.Exists(secretFilePath))
+            return File.ReadAllText(secretFilePath);
 
-            throw new InvalidOperationException("Discord token not provided for tests.");
-        });
+        throw new InvalidOperationException("Discord token not provided for tests.");
+    });
 
-        private static readonly Lazy<bool> IsDiscordTokenBotLazy = new(() =>
-        {
-            var fromEnvironment = Environment.GetEnvironmentVariable("DISCORD_TOKEN_BOT");
-            if (!string.IsNullOrWhiteSpace(fromEnvironment))
-                return string.Equals(fromEnvironment, "true", StringComparison.OrdinalIgnoreCase);
-
-            var secretFilePath = Path.Combine(
-                Path.GetDirectoryName(typeof(Secrets).Assembly.Location) ?? Directory.GetCurrentDirectory(),
-                "DiscordTokenBot.secret"
-            );
-
-            if (File.Exists(secretFilePath))
-                return true;
-
-            return false;
-        });
-
-        public static string DiscordToken => DiscordTokenLazy.Value;
-
-        public static bool IsDiscordTokenBot => IsDiscordTokenBotLazy.Value;
-    }
+    public static string DiscordToken => DiscordTokenLazy.Value;
 }

DiscordChatExporter.Cli.Tests/Readme.md

@@ -3,12 +3,11 @@
 This test suite runs against a real Discord server, specifically created to exercise different behaviors required by the test scenarios.
 In order to run these tests locally, you need to join the test server and configure your authentication token.
 
-1. Join the server: https://discord.gg/eRV8Vap5bm
+1. [Join the test server](https://discord.gg/eRV8Vap5bm)
 2. Locate your Discord authentication token
 3. Specify your token using a file or an environment variable:
     - **Using a file**: put your token in a new `DiscordToken.secret` file created in this directory
     - **Using an environment variable**: set `DISCORD_TOKEN` variable to your token
 4. Run the tests: `dotnet test`
 
-> If you want to have a new test case or a scenario added, please let me know in your pull request.
-Currently, it's not possible to add them by yourself.
+> If you want to add a new test case, please let me know and I will give you the required permissions

DiscordChatExporter.Cli.Tests/Specs/CsvWriting/ContentSpecs.cs

@@ -4,28 +4,34 @@ using DiscordChatExporter.Cli.Tests.TestData;
 using FluentAssertions;
 using Xunit;
 
-namespace DiscordChatExporter.Cli.Tests.Specs.CsvWriting
-{
-    public record ContentSpecs(ExportWrapperFixture ExportWrapper) : IClassFixture<ExportWrapperFixture>
-    {
-        [Fact]
-        public async Task Messages_are_exported_correctly()
-        {
-            // Act
-            var document = await ExportWrapper.ExportAsCsvAsync(ChannelIds.DateRangeTestCases);
+namespace DiscordChatExporter.Cli.Tests.Specs.CsvWriting;
 
-            // Assert
-            document.Should().ContainAll(
-                "Tyrrrz#5447",
-                "Hello world",
-                "Goodbye world",
-                "Foo bar",
-                "Hurdle Durdle",
-                "One",
-                "Two",
-                "Three",
-                "Yeet"
-            );
-        }
+public class ContentSpecs : IClassFixture<ExportWrapperFixture>
+{
+    private readonly ExportWrapperFixture _exportWrapper;
+
+    public ContentSpecs(ExportWrapperFixture exportWrapper)
+    {
+        _exportWrapper = exportWrapper;
+    }
+
+    [Fact]
+    public async Task Messages_are_exported_correctly()
+    {
+        // Act
+        var document = await _exportWrapper.ExportAsCsvAsync(ChannelIds.DateRangeTestCases);
+
+        // Assert
+        document.Should().ContainAll(
+            "Tyrrrz#5447",
+            "Hello world",
+            "Goodbye world",
+            "Foo bar",
+            "Hurdle Durdle",
+            "One",
+            "Two",
+            "Three",
+            "Yeet"
+        );
     }
 }

DiscordChatExporter.Cli.Tests/Specs/DateRangeSpecs.cs

@@ -13,148 +13,145 @@ using FluentAssertions;
 using JsonExtensions;
 using Xunit;
 
-namespace DiscordChatExporter.Cli.Tests.Specs
+namespace DiscordChatExporter.Cli.Tests.Specs;
+
+public class DateRangeSpecs : IClassFixture<TempOutputFixture>
 {
-    public record DateRangeSpecs(TempOutputFixture TempOutput) : IClassFixture<TempOutputFixture>
+    private readonly TempOutputFixture _tempOutput;
+
+    public DateRangeSpecs(TempOutputFixture tempOutput)
     {
-        [Fact]
-        public async Task Messages_filtered_after_specific_date_only_include_messages_sent_after_that_date()
+        _tempOutput = tempOutput;
+    }
+
+    [Fact]
+    public async Task Messages_filtered_after_specific_date_only_include_messages_sent_after_that_date()
+    {
+        // Arrange
+        var after = new DateTimeOffset(2021, 07, 24, 0, 0, 0, TimeSpan.Zero);
+        var filePath = _tempOutput.GetTempFilePath();
+
+        // Act
+        await new ExportChannelsCommand
         {
-            // Arrange
-            var after = new DateTimeOffset(2021, 07, 24, 0, 0, 0, TimeSpan.Zero);
-            var filePath = TempOutput.GetTempFilePath();
+            Token = Secrets.DiscordToken,
+            ChannelIds = new[] { ChannelIds.DateRangeTestCases },
+            ExportFormat = ExportFormat.Json,
+            OutputPath = filePath,
+            After = Snowflake.FromDate(after)
+        }.ExecuteAsync(new FakeConsole());
 
-            // Act
-            await new ExportChannelsCommand
-            {
-                TokenValue = Secrets.DiscordToken,
-                IsBotToken = Secrets.IsDiscordTokenBot,
-                ChannelIds = new[] { ChannelIds.DateRangeTestCases },
-                ExportFormat = ExportFormat.Json,
-                OutputPath = filePath,
-                After = Snowflake.FromDate(after)
-            }.ExecuteAsync(new FakeConsole());
+        // Assert
+        var timestamps = Json
+            .Parse(await File.ReadAllTextAsync(filePath))
+            .GetProperty("messages")
+            .EnumerateArray()
+            .Select(j => j.GetProperty("timestamp").GetDateTimeOffset())
+            .ToArray();
 
-            var data = await File.ReadAllTextAsync(filePath);
-            var document = Json.Parse(data);
+        timestamps.All(t => t > after).Should().BeTrue();
 
-            var timestamps = document
-                .GetProperty("messages")
-                .EnumerateArray()
-                .Select(j => j.GetProperty("timestamp").GetDateTimeOffset())
-                .ToArray();
-
-            // Assert
-            timestamps.All(t => t > after).Should().BeTrue();
-
-            timestamps.Should().BeEquivalentTo(new[]
-            {
-                new DateTimeOffset(2021, 07, 24, 13, 49, 13, TimeSpan.Zero),
-                new DateTimeOffset(2021, 07, 24, 14, 52, 38, TimeSpan.Zero),
-                new DateTimeOffset(2021, 07, 24, 14, 52, 39, TimeSpan.Zero),
-                new DateTimeOffset(2021, 07, 24, 14, 52, 40, TimeSpan.Zero),
-                new DateTimeOffset(2021, 09, 08, 14, 26, 35, TimeSpan.Zero)
-            }, o =>
-            {
-                return o
-                    .Using<DateTimeOffset>(ctx =>
-                        ctx.Subject.Should().BeCloseTo(ctx.Expectation, TimeSpan.FromSeconds(1))
-                    )
-                    .WhenTypeIs<DateTimeOffset>();
-            });
-        }
-
-        [Fact]
-        public async Task Messages_filtered_before_specific_date_only_include_messages_sent_before_that_date()
+        timestamps.Should().BeEquivalentTo(new[]
         {
-            // Arrange
-            var before = new DateTimeOffset(2021, 07, 24, 0, 0, 0, TimeSpan.Zero);
-            var filePath = TempOutput.GetTempFilePath();
-
-            // Act
-            await new ExportChannelsCommand
-            {
-                TokenValue = Secrets.DiscordToken,
-                IsBotToken = Secrets.IsDiscordTokenBot,
-                ChannelIds = new[] { ChannelIds.DateRangeTestCases },
-                ExportFormat = ExportFormat.Json,
-                OutputPath = filePath,
-                Before = Snowflake.FromDate(before)
-            }.ExecuteAsync(new FakeConsole());
-
-            var data = await File.ReadAllTextAsync(filePath);
-            var document = Json.Parse(data);
-
-            var timestamps = document
-                .GetProperty("messages")
-                .EnumerateArray()
-                .Select(j => j.GetProperty("timestamp").GetDateTimeOffset())
-                .ToArray();
-
-            // Assert
-            timestamps.All(t => t < before).Should().BeTrue();
-
-            timestamps.Should().BeEquivalentTo(new[]
-            {
-                new DateTimeOffset(2021, 07, 19, 13, 34, 18, TimeSpan.Zero),
-                new DateTimeOffset(2021, 07, 19, 15, 58, 48, TimeSpan.Zero),
-                new DateTimeOffset(2021, 07, 19, 17, 23, 58, TimeSpan.Zero)
-            }, o =>
-            {
-                return o
-                    .Using<DateTimeOffset>(ctx =>
-                        ctx.Subject.Should().BeCloseTo(ctx.Expectation, TimeSpan.FromSeconds(1))
-                    )
-                    .WhenTypeIs<DateTimeOffset>();
-            });
-        }
-
-        [Fact]
-        public async Task Messages_filtered_between_specific_dates_only_include_messages_sent_between_those_dates()
+            new DateTimeOffset(2021, 07, 24, 13, 49, 13, TimeSpan.Zero),
+            new DateTimeOffset(2021, 07, 24, 14, 52, 38, TimeSpan.Zero),
+            new DateTimeOffset(2021, 07, 24, 14, 52, 39, TimeSpan.Zero),
+            new DateTimeOffset(2021, 07, 24, 14, 52, 40, TimeSpan.Zero),
+            new DateTimeOffset(2021, 09, 08, 14, 26, 35, TimeSpan.Zero)
+        }, o =>
         {
-            // Arrange
-            var after = new DateTimeOffset(2021, 07, 24, 0, 0, 0, TimeSpan.Zero);
-            var before = new DateTimeOffset(2021, 08, 01, 0, 0, 0, TimeSpan.Zero);
-            var filePath = TempOutput.GetTempFilePath();
+            return o
+                .Using<DateTimeOffset>(ctx =>
+                    ctx.Subject.Should().BeCloseTo(ctx.Expectation, TimeSpan.FromSeconds(1))
+                )
+                .WhenTypeIs<DateTimeOffset>();
+        });
+    }
 
-            // Act
-            await new ExportChannelsCommand
-            {
-                TokenValue = Secrets.DiscordToken,
-                IsBotToken = Secrets.IsDiscordTokenBot,
-                ChannelIds = new[] { ChannelIds.DateRangeTestCases },
-                ExportFormat = ExportFormat.Json,
-                OutputPath = filePath,
-                Before = Snowflake.FromDate(before),
-                After = Snowflake.FromDate(after)
-            }.ExecuteAsync(new FakeConsole());
+    [Fact]
+    public async Task Messages_filtered_before_specific_date_only_include_messages_sent_before_that_date()
+    {
+        // Arrange
+        var before = new DateTimeOffset(2021, 07, 24, 0, 0, 0, TimeSpan.Zero);
+        var filePath = _tempOutput.GetTempFilePath();
 
-            var data = await File.ReadAllTextAsync(filePath);
-            var document = Json.Parse(data);
+        // Act
+        await new ExportChannelsCommand
+        {
+            Token = Secrets.DiscordToken,
+            ChannelIds = new[] { ChannelIds.DateRangeTestCases },
+            ExportFormat = ExportFormat.Json,
+            OutputPath = filePath,
+            Before = Snowflake.FromDate(before)
+        }.ExecuteAsync(new FakeConsole());
 
-            var timestamps = document
-                .GetProperty("messages")
-                .EnumerateArray()
-                .Select(j => j.GetProperty("timestamp").GetDateTimeOffset())
-                .ToArray();
+        // Assert
+        var timestamps = Json
+            .Parse(await File.ReadAllTextAsync(filePath))
+            .GetProperty("messages")
+            .EnumerateArray()
+            .Select(j => j.GetProperty("timestamp").GetDateTimeOffset())
+            .ToArray();
 
-            // Assert
-            timestamps.All(t => t < before && t > after).Should().BeTrue();
+        timestamps.All(t => t < before).Should().BeTrue();
 
-            timestamps.Should().BeEquivalentTo(new[]
-            {
-                new DateTimeOffset(2021, 07, 24, 13, 49, 13, TimeSpan.Zero),
-                new DateTimeOffset(2021, 07, 24, 14, 52, 38, TimeSpan.Zero),
-                new DateTimeOffset(2021, 07, 24, 14, 52, 39, TimeSpan.Zero),
-                new DateTimeOffset(2021, 07, 24, 14, 52, 40, TimeSpan.Zero)
-            }, o =>
-            {
-                return o
-                    .Using<DateTimeOffset>(ctx =>
-                        ctx.Subject.Should().BeCloseTo(ctx.Expectation, TimeSpan.FromSeconds(1))
-                    )
-                    .WhenTypeIs<DateTimeOffset>();
-            });
-        }
+        timestamps.Should().BeEquivalentTo(new[]
+        {
+            new DateTimeOffset(2021, 07, 19, 13, 34, 18, TimeSpan.Zero),
+            new DateTimeOffset(2021, 07, 19, 15, 58, 48, TimeSpan.Zero),
+            new DateTimeOffset(2021, 07, 19, 17, 23, 58, TimeSpan.Zero)
+        }, o =>
+        {
+            return o
+                .Using<DateTimeOffset>(ctx =>
+                    ctx.Subject.Should().BeCloseTo(ctx.Expectation, TimeSpan.FromSeconds(1))
+                )
+                .WhenTypeIs<DateTimeOffset>();
+        });
+    }
+
+    [Fact]
+    public async Task Messages_filtered_between_specific_dates_only_include_messages_sent_between_those_dates()
+    {
+        // Arrange
+        var after = new DateTimeOffset(2021, 07, 24, 0, 0, 0, TimeSpan.Zero);
+        var before = new DateTimeOffset(2021, 08, 01, 0, 0, 0, TimeSpan.Zero);
+        var filePath = _tempOutput.GetTempFilePath();
+
+        // Act
+        await new ExportChannelsCommand
+        {
+            Token = Secrets.DiscordToken,
+            ChannelIds = new[] { ChannelIds.DateRangeTestCases },
+            ExportFormat = ExportFormat.Json,
+            OutputPath = filePath,
+            Before = Snowflake.FromDate(before),
+            After = Snowflake.FromDate(after)
+        }.ExecuteAsync(new FakeConsole());
+
+        // Assert
+        var timestamps = Json
+            .Parse(await File.ReadAllTextAsync(filePath))
+            .GetProperty("messages")
+            .EnumerateArray()
+            .Select(j => j.GetProperty("timestamp").GetDateTimeOffset())
+            .ToArray();
+
+        timestamps.All(t => t < before && t > after).Should().BeTrue();
+
+        timestamps.Should().BeEquivalentTo(new[]
+        {
+            new DateTimeOffset(2021, 07, 24, 13, 49, 13, TimeSpan.Zero),
+            new DateTimeOffset(2021, 07, 24, 14, 52, 38, TimeSpan.Zero),
+            new DateTimeOffset(2021, 07, 24, 14, 52, 39, TimeSpan.Zero),
+            new DateTimeOffset(2021, 07, 24, 14, 52, 40, TimeSpan.Zero)
+        }, o =>
+        {
+            return o
+                .Using<DateTimeOffset>(ctx =>
+                    ctx.Subject.Should().BeCloseTo(ctx.Expectation, TimeSpan.FromSeconds(1))
+                )
+                .WhenTypeIs<DateTimeOffset>();
+        });
     }
 }

DiscordChatExporter.Cli.Tests/Specs/FilterSpecs.cs

@@ -12,124 +12,144 @@ using FluentAssertions;
 using JsonExtensions;
 using Xunit;
 
-namespace DiscordChatExporter.Cli.Tests.Specs
+namespace DiscordChatExporter.Cli.Tests.Specs;
+
+public class FilterSpecs : IClassFixture<TempOutputFixture>
 {
-    public record FilterSpecs(TempOutputFixture TempOutput) : IClassFixture<TempOutputFixture>
+    private readonly TempOutputFixture _tempOutput;
+
+    public FilterSpecs(TempOutputFixture tempOutput)
     {
-        [Fact]
-        public async Task Messages_filtered_by_text_only_include_messages_that_contain_that_text()
+        _tempOutput = tempOutput;
+    }
+
+    [Fact]
+    public async Task Messages_filtered_by_text_only_include_messages_that_contain_that_text()
+    {
+        // Arrange
+        var filePath = _tempOutput.GetTempFilePath();
+
+        // Act
+        await new ExportChannelsCommand
         {
-            // Arrange
-            var filePath = TempOutput.GetTempFilePath();
+            Token = Secrets.DiscordToken,
+            ChannelIds = new[] { ChannelIds.FilterTestCases },
+            ExportFormat = ExportFormat.Json,
+            OutputPath = filePath,
+            MessageFilter = MessageFilter.Parse("some text")
+        }.ExecuteAsync(new FakeConsole());
 
-            // Act
-            await new ExportChannelsCommand
-            {
-                TokenValue = Secrets.DiscordToken,
-                IsBotToken = Secrets.IsDiscordTokenBot,
-                ChannelIds = new[] { ChannelIds.FilterTestCases },
-                ExportFormat = ExportFormat.Json,
-                OutputPath = filePath,
-                MessageFilter = MessageFilter.Parse("some text")
-            }.ExecuteAsync(new FakeConsole());
+        // Assert
+        Json
+            .Parse(await File.ReadAllTextAsync(filePath))
+            .GetProperty("messages")
+            .EnumerateArray()
+            .Select(j => j.GetProperty("content").GetString())
+            .Should()
+            .ContainSingle("Some random text");
+    }
 
-            var data = await File.ReadAllTextAsync(filePath);
-            var document = Json.Parse(data);
+    [Fact]
+    public async Task Messages_filtered_by_author_only_include_messages_sent_by_that_author()
+    {
+        // Arrange
+        var filePath = _tempOutput.GetTempFilePath();
 
-            // Assert
-            document
-                .GetProperty("messages")
-                .EnumerateArray()
-                .Select(j => j.GetProperty("content").GetString())
-                .Should()
-                .ContainSingle("Some random text");
-        }
-
-        [Fact]
-        public async Task Messages_filtered_by_author_only_include_messages_sent_by_that_author()
+        // Act
+        await new ExportChannelsCommand
         {
-            // Arrange
-            var filePath = TempOutput.GetTempFilePath();
+            Token = Secrets.DiscordToken,
+            ChannelIds = new[] { ChannelIds.FilterTestCases },
+            ExportFormat = ExportFormat.Json,
+            OutputPath = filePath,
+            MessageFilter = MessageFilter.Parse("from:Tyrrrz")
+        }.ExecuteAsync(new FakeConsole());
 
-            // Act
-            await new ExportChannelsCommand
-            {
-                TokenValue = Secrets.DiscordToken,
-                IsBotToken = Secrets.IsDiscordTokenBot,
-                ChannelIds = new[] { ChannelIds.FilterTestCases },
-                ExportFormat = ExportFormat.Json,
-                OutputPath = filePath,
-                MessageFilter = MessageFilter.Parse("from:Tyrrrz")
-            }.ExecuteAsync(new FakeConsole());
+        // Assert
+        Json
+            .Parse(await File.ReadAllTextAsync(filePath))
+            .GetProperty("messages")
+            .EnumerateArray()
+            .Select(j => j.GetProperty("author").GetProperty("name").GetString())
+            .Should()
+            .AllBe("Tyrrrz");
+    }
 
-            var data = await File.ReadAllTextAsync(filePath);
-            var document = Json.Parse(data);
+    [Fact]
+    public async Task Messages_filtered_by_content_only_include_messages_that_have_that_content()
+    {
+        // Arrange
+        var filePath = _tempOutput.GetTempFilePath();
 
-            // Assert
-            document
-                .GetProperty("messages")
-                .EnumerateArray()
-                .Select(j => j.GetProperty("author").GetProperty("name").GetString())
-                .Should()
-                .AllBe("Tyrrrz");
-        }
-
-        [Fact]
-        public async Task Messages_filtered_by_content_only_include_messages_that_have_that_content()
+        // Act
+        await new ExportChannelsCommand
         {
-            // Arrange
-            var filePath = TempOutput.GetTempFilePath();
+            Token = Secrets.DiscordToken,
+            ChannelIds = new[] { ChannelIds.FilterTestCases },
+            ExportFormat = ExportFormat.Json,
+            OutputPath = filePath,
+            MessageFilter = MessageFilter.Parse("has:image")
+        }.ExecuteAsync(new FakeConsole());
 
-            // Act
-            await new ExportChannelsCommand
-            {
-                TokenValue = Secrets.DiscordToken,
-                IsBotToken = Secrets.IsDiscordTokenBot,
-                ChannelIds = new[] { ChannelIds.FilterTestCases },
-                ExportFormat = ExportFormat.Json,
-                OutputPath = filePath,
-                MessageFilter = MessageFilter.Parse("has:image")
-            }.ExecuteAsync(new FakeConsole());
+        // Assert
+        Json
+            .Parse(await File.ReadAllTextAsync(filePath))
+            .GetProperty("messages")
+            .EnumerateArray()
+            .Select(j => j.GetProperty("content").GetString())
+            .Should()
+            .ContainSingle("This has image");
+    }
 
-            var data = await File.ReadAllTextAsync(filePath);
-            var document = Json.Parse(data);
+    [Fact]
+    public async Task Messages_filtered_by_pin_only_include_messages_that_have_been_pinned()
+    {
+        // Arrange
+        var filePath = _tempOutput.GetTempFilePath();
 
-            // Assert
-            document
-                .GetProperty("messages")
-                .EnumerateArray()
-                .Select(j => j.GetProperty("content").GetString())
-                .Should()
-                .ContainSingle("This has image");
-        }
-
-        [Fact]
-        public async Task Messages_filtered_by_mention_only_include_messages_that_have_that_mention()
+        // Act
+        await new ExportChannelsCommand
         {
-            // Arrange
-            var filePath = TempOutput.GetTempFilePath();
+            Token = Secrets.DiscordToken,
+            ChannelIds = new[] { ChannelIds.FilterTestCases },
+            ExportFormat = ExportFormat.Json,
+            OutputPath = filePath,
+            MessageFilter = MessageFilter.Parse("has:pin")
+        }.ExecuteAsync(new FakeConsole());
 
-            // Act
-            await new ExportChannelsCommand
-            {
-                TokenValue = Secrets.DiscordToken,
-                IsBotToken = Secrets.IsDiscordTokenBot,
-                ChannelIds = new[] { ChannelIds.FilterTestCases },
-                ExportFormat = ExportFormat.Json,
-                OutputPath = filePath,
-                MessageFilter = MessageFilter.Parse("mentions:Tyrrrz")
-            }.ExecuteAsync(new FakeConsole());
+        // Assert
+        Json
+            .Parse(await File.ReadAllTextAsync(filePath))
+            .GetProperty("messages")
+            .EnumerateArray()
+            .Select(j => j.GetProperty("content").GetString())
+            .Should()
+            .ContainSingle("This is pinned");
+    }
 
-            var data = await File.ReadAllTextAsync(filePath);
-            var document = Json.Parse(data);
+    [Fact]
+    public async Task Messages_filtered_by_mention_only_include_messages_that_have_that_mention()
+    {
+        // Arrange
+        var filePath = _tempOutput.GetTempFilePath();
 
-            // Assert
-            document
-                .GetProperty("messages")
-                .EnumerateArray()
-                .Select(j => j.GetProperty("content").GetString())
-                .Should()
-                .ContainSingle("This has mention");
-        }
+        // Act
+        await new ExportChannelsCommand
+        {
+            Token = Secrets.DiscordToken,
+            ChannelIds = new[] { ChannelIds.FilterTestCases },
+            ExportFormat = ExportFormat.Json,
+            OutputPath = filePath,
+            MessageFilter = MessageFilter.Parse("mentions:Tyrrrz")
+        }.ExecuteAsync(new FakeConsole());
+
+        // Assert
+        Json
+            .Parse(await File.ReadAllTextAsync(filePath))
+            .GetProperty("messages")
+            .EnumerateArray()
+            .Select(j => j.GetProperty("content").GetString())
+            .Should()
+            .ContainSingle("This has mention");
     }
 }

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

@@ -1,4 +1,5 @@
-using System.Threading.Tasks;
+using System.Linq;
+using System.Threading.Tasks;
 using AngleSharp.Dom;
 using DiscordChatExporter.Cli.Tests.Fixtures;
 using DiscordChatExporter.Cli.Tests.TestData;
@@ -6,88 +7,100 @@ using DiscordChatExporter.Core.Discord;
 using FluentAssertions;
 using Xunit;
 
-namespace DiscordChatExporter.Cli.Tests.Specs.HtmlWriting
+namespace DiscordChatExporter.Cli.Tests.Specs.HtmlWriting;
+
+public class AttachmentSpecs : IClassFixture<ExportWrapperFixture>
 {
-    public record AttachmentSpecs(ExportWrapperFixture ExportWrapper) : IClassFixture<ExportWrapperFixture>
+    private readonly ExportWrapperFixture _exportWrapper;
+
+    public AttachmentSpecs(ExportWrapperFixture exportWrapper)
     {
-        [Fact]
-        public async Task Message_with_a_generic_attachment_is_rendered_correctly()
-        {
-            // Act
-            var message = await ExportWrapper.GetMessageAsHtmlAsync(
-                ChannelIds.AttachmentTestCases,
-                Snowflake.Parse("885587844989612074")
-            );
+        _exportWrapper = exportWrapper;
+    }
 
-            var fileUrl = message.QuerySelector("a")?.GetAttribute("href");
+    [Fact]
+    public async Task Message_with_a_generic_attachment_is_rendered_correctly()
+    {
+        // Act
+        var message = await _exportWrapper.GetMessageAsHtmlAsync(
+            ChannelIds.AttachmentTestCases,
+            Snowflake.Parse("885587844989612074")
+        );
 
-            // Assert
-            message.Text().Should().ContainAll(
-                "Generic file attachment",
-                "Test.txt",
-                "11 bytes"
-            );
+        // Assert
+        message.Text().Should().ContainAll(
+            "Generic file attachment",
+            "Test.txt",
+            "11 bytes"
+        );
 
-            fileUrl.Should().StartWithEquivalentOf(
+        message
+            .QuerySelectorAll("a")
+            .Select(e => e.GetAttribute("href"))
+            .Should()
+            .Contain(
                 "https://cdn.discordapp.com/attachments/885587741654536192/885587844964417596/Test.txt"
             );
-        }
+    }
 
-        [Fact]
-        public async Task Message_with_an_image_attachment_is_rendered_correctly()
-        {
-            // Act
-            var message = await ExportWrapper.GetMessageAsHtmlAsync(
-                ChannelIds.AttachmentTestCases,
-                Snowflake.Parse("885654862656843786")
-            );
+    [Fact]
+    public async Task Message_with_an_image_attachment_is_rendered_correctly()
+    {
+        // Act
+        var message = await _exportWrapper.GetMessageAsHtmlAsync(
+            ChannelIds.AttachmentTestCases,
+            Snowflake.Parse("885654862656843786")
+        );
 
-            var imageUrl = message.QuerySelector("img")?.GetAttribute("src");
+        // Assert
+        message.Text().Should().Contain("Image attachment");
 
-            // Assert
-            message.Text().Should().Contain("Image attachment");
-
-            imageUrl.Should().StartWithEquivalentOf(
+        message
+            .QuerySelectorAll("img")
+            .Select(e => e.GetAttribute("src"))
+            .Should()
+            .Contain(
                 "https://cdn.discordapp.com/attachments/885587741654536192/885654862430359613/bird-thumbnail.png"
             );
-        }
+    }
 
-        [Fact]
-        public async Task Message_with_a_video_attachment_is_rendered_correctly()
-        {
-            // Act
-            var message = await ExportWrapper.GetMessageAsHtmlAsync(
-                ChannelIds.AttachmentTestCases,
-                Snowflake.Parse("885655761919836171")
-            );
+    [Fact]
+    public async Task Message_with_a_video_attachment_is_rendered_correctly()
+    {
+        // https://github.com/Tyrrrz/DiscordChatExporter/issues/333
 
-            var videoUrl = message.QuerySelector("video source")?.GetAttribute("src");
+        // Act
+        var message = await _exportWrapper.GetMessageAsHtmlAsync(
+            ChannelIds.AttachmentTestCases,
+            Snowflake.Parse("885655761919836171")
+        );
 
-            // Assert
-            message.Text().Should().Contain("Video attachment");
+        // Assert
+        message.Text().Should().Contain("Video attachment");
 
-            videoUrl.Should().StartWithEquivalentOf(
-                "https://cdn.discordapp.com/attachments/885587741654536192/885655761512968233/file_example_MP4_640_3MG.mp4"
-            );
-        }
+        var videoUrl = message.QuerySelector("video source")?.GetAttribute("src");
+        videoUrl.Should().Be(
+            "https://cdn.discordapp.com/attachments/885587741654536192/885655761512968233/file_example_MP4_640_3MG.mp4"
+        );
+    }
 
-        [Fact]
-        public async Task Message_with_an_audio_attachment_is_rendered_correctly()
-        {
-            // Act
-            var message = await ExportWrapper.GetMessageAsHtmlAsync(
-                ChannelIds.AttachmentTestCases,
-                Snowflake.Parse("885656175620808734")
-            );
+    [Fact]
+    public async Task Message_with_an_audio_attachment_is_rendered_correctly()
+    {
+        // https://github.com/Tyrrrz/DiscordChatExporter/issues/333
 
-            var audioUrl = message.QuerySelector("audio source")?.GetAttribute("src");
+        // Act
+        var message = await _exportWrapper.GetMessageAsHtmlAsync(
+            ChannelIds.AttachmentTestCases,
+            Snowflake.Parse("885656175620808734")
+        );
 
-            // Assert
-            message.Text().Should().Contain("Audio attachment");
+        // Assert
+        message.Text().Should().Contain("Audio attachment");
 
-            audioUrl.Should().StartWithEquivalentOf(
-                "https://cdn.discordapp.com/attachments/885587741654536192/885656175348187146/file_example_MP3_1MG.mp3"
-            );
-        }
+        var audioUrl = message.QuerySelector("audio source")?.GetAttribute("src");
+        audioUrl.Should().Be(
+            "https://cdn.discordapp.com/attachments/885587741654536192/885656175348187146/file_example_MP3_1MG.mp3"
+        );
     }
 }

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

@@ -6,38 +6,44 @@ using DiscordChatExporter.Cli.Tests.TestData;
 using FluentAssertions;
 using Xunit;
 
-namespace DiscordChatExporter.Cli.Tests.Specs.HtmlWriting
+namespace DiscordChatExporter.Cli.Tests.Specs.HtmlWriting;
+
+public class ContentSpecs : IClassFixture<ExportWrapperFixture>
 {
-    public record ContentSpecs(ExportWrapperFixture ExportWrapper) : IClassFixture<ExportWrapperFixture>
+    private readonly ExportWrapperFixture _exportWrapper;
+
+    public ContentSpecs(ExportWrapperFixture exportWrapper)
     {
-        [Fact]
-        public async Task Messages_are_exported_correctly()
-        {
-            // Act
-            var messages = await ExportWrapper.GetMessagesAsHtmlAsync(ChannelIds.DateRangeTestCases);
+        _exportWrapper = exportWrapper;
+    }
 
-            // Assert
-            messages.Select(e => e.GetAttribute("data-message-id")).Should().Equal(
-                "866674314627121232",
-                "866710679758045195",
-                "866732113319428096",
-                "868490009366396958",
-                "868505966528835604",
-                "868505969821364245",
-                "868505973294268457",
-                "885169254029213696"
-            );
+    [Fact]
+    public async Task Messages_are_exported_correctly()
+    {
+        // Act
+        var messages = await _exportWrapper.GetMessagesAsHtmlAsync(ChannelIds.DateRangeTestCases);
 
-            messages.Select(e => e.QuerySelector(".chatlog__content")?.Text().Trim()).Should().Equal(
-                "Hello world",
-                "Goodbye world",
-                "Foo bar",
-                "Hurdle Durdle",
-                "One",
-                "Two",
-                "Three",
-                "Yeet"
-            );
-        }
+        // Assert
+        messages.Select(e => e.GetAttribute("data-message-id")).Should().Equal(
+            "866674314627121232",
+            "866710679758045195",
+            "866732113319428096",
+            "868490009366396958",
+            "868505966528835604",
+            "868505969821364245",
+            "868505973294268457",
+            "885169254029213696"
+        );
+
+        messages.SelectMany(e => e.Text()).Should().ContainInOrder(
+            "Hello world",
+            "Goodbye world",
+            "Foo bar",
+            "Hurdle Durdle",
+            "One",
+            "Two",
+            "Three",
+            "Yeet"
+        );
     }
 }

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

@@ -1,4 +1,5 @@
-using System.Threading.Tasks;
+using System.Linq;
+using System.Threading.Tasks;
 using AngleSharp.Dom;
 using DiscordChatExporter.Cli.Tests.Fixtures;
 using DiscordChatExporter.Cli.Tests.TestData;
@@ -6,59 +7,128 @@ using DiscordChatExporter.Core.Discord;
 using FluentAssertions;
 using Xunit;
 
-namespace DiscordChatExporter.Cli.Tests.Specs.HtmlWriting
+namespace DiscordChatExporter.Cli.Tests.Specs.HtmlWriting;
+
+public class EmbedSpecs : IClassFixture<ExportWrapperFixture>
 {
-    public record EmbedSpecs(ExportWrapperFixture ExportWrapper) : IClassFixture<ExportWrapperFixture>
+    private readonly ExportWrapperFixture _exportWrapper;
+
+    public EmbedSpecs(ExportWrapperFixture exportWrapper)
     {
-        [Fact]
-        public async Task Message_with_an_embed_is_rendered_correctly()
-        {
-            // Act
-            var message = await ExportWrapper.GetMessageAsHtmlAsync(
-                ChannelIds.EmbedTestCases,
-                Snowflake.Parse("866769910729146400")
+        _exportWrapper = exportWrapper;
+    }
+
+    [Fact]
+    public async Task Message_with_an_embed_is_rendered_correctly()
+    {
+        // Act
+        var message = await _exportWrapper.GetMessageAsHtmlAsync(
+            ChannelIds.EmbedTestCases,
+            Snowflake.Parse("866769910729146400")
+        );
+
+        // Assert
+        message.Text().Should().ContainAll(
+            "Embed author",
+            "Embed title",
+            "Embed description",
+            "Field 1", "Value 1",
+            "Field 2", "Value 2",
+            "Field 3", "Value 3",
+            "Embed footer"
+        );
+    }
+
+    [Fact]
+    public async Task Message_containing_an_image_link_is_rendered_with_an_image_embed()
+    {
+        // https://github.com/Tyrrrz/DiscordChatExporter/issues/537
+
+        // Act
+        var message = await _exportWrapper.GetMessageAsHtmlAsync(
+            ChannelIds.EmbedTestCases,
+            Snowflake.Parse("991768701126852638")
+        );
+
+        // Assert
+        message
+            .QuerySelectorAll("img")
+            .Select(e => e.GetAttribute("src"))
+            .Should()
+            .Contain("https://i.redd.it/f8w05ja8s4e61.png");
+    }
+
+    [Fact]
+    public async Task Message_containing_an_image_link_and_nothing_else_is_rendered_without_text_content()
+    {
+        // https://github.com/Tyrrrz/DiscordChatExporter/issues/682
+
+        // Act
+        var message = await _exportWrapper.GetMessageAsHtmlAsync(
+            ChannelIds.EmbedTestCases,
+            Snowflake.Parse("991768701126852638")
+        );
+
+        // Assert
+        var content = message.QuerySelector(".chatlog__content")?.Text();
+        content.Should().BeNullOrEmpty();
+    }
+
+    [Fact]
+    public async Task Message_containing_a_Spotify_track_link_is_rendered_with_a_track_embed()
+    {
+        // https://github.com/Tyrrrz/DiscordChatExporter/issues/657
+
+        // Act
+        var message = await _exportWrapper.GetMessageAsHtmlAsync(
+            ChannelIds.EmbedTestCases,
+            Snowflake.Parse("867886632203976775")
+        );
+
+        // Assert
+        var iframeUrl = message.QuerySelector("iframe")?.GetAttribute("src");
+        iframeUrl.Should().Be("https://open.spotify.com/embed/track/1LHZMWefF9502NPfArRfvP");
+    }
+
+    [Fact]
+    public async Task Message_containing_a_YouTube_video_link_is_rendered_with_a_video_embed()
+    {
+        // https://github.com/Tyrrrz/DiscordChatExporter/issues/570
+
+        // Act
+        var message = await _exportWrapper.GetMessageAsHtmlAsync(
+            ChannelIds.EmbedTestCases,
+            Snowflake.Parse("866472508588294165")
+        );
+
+        // Assert
+        var iframeUrl = message.QuerySelector("iframe")?.GetAttribute("src");
+        iframeUrl.Should().Be("https://www.youtube.com/embed/qOWW4OlgbvE");
+    }
+
+    [Fact]
+    public async Task Message_containing_a_Twitter_post_link_with_multiple_images_is_rendered_as_a_single_embed()
+    {
+        // https://github.com/Tyrrrz/DiscordChatExporter/issues/695
+
+        // Act
+        var message = await _exportWrapper.GetMessageAsHtmlAsync(
+            ChannelIds.EmbedTestCases,
+            Snowflake.Parse("991757444017557665")
+        );
+
+        // Assert
+        message
+            .QuerySelectorAll("img")
+            .Select(e => e.GetAttribute("src"))
+            .Should()
+            .ContainInOrder(
+                "https://images-ext-1.discordapp.net/external/-n--xW3EHH_3jlrheVkMXHCM7T86b5Ty4-MzXCT4m1Q/https/pbs.twimg.com/media/FVYIzYPWAAAMBqZ.png",
+                "https://images-ext-2.discordapp.net/external/z5nEmGeEldV-kswydGLhqUsFHbb5AWHtdvc9XT6N5rE/https/pbs.twimg.com/media/FVYJBWJWAAMNAx2.png",
+                "https://images-ext-2.discordapp.net/external/gnip03SawMB6uZLagN5sRDpA_1Ap1CcEhMbJfK1z6WQ/https/pbs.twimg.com/media/FVYJHiRX0AANZcz.png",
+                "https://images-ext-2.discordapp.net/external/jl1v6cCbLaGmiwmKU-ZkXnF4cFsJ39f9A3-oEdqPdZs/https/pbs.twimg.com/media/FVYJNZNXwAAPnVG.png"
             );
 
-            // Assert
-            message.Text().Should().ContainAll(
-                "Embed author",
-                "Embed title",
-                "Embed description",
-                "Field 1", "Value 1",
-                "Field 2", "Value 2",
-                "Field 3", "Value 3",
-                "Embed footer"
-            );
-        }
-
-        [Fact]
-        public async Task Message_with_a_Spotify_track_is_rendered_using_an_iframe()
-        {
-            // Act
-            var message = await ExportWrapper.GetMessageAsHtmlAsync(
-                ChannelIds.EmbedTestCases,
-                Snowflake.Parse("867886632203976775")
-            );
-
-            var iframeSrc = message.QuerySelector("iframe")?.GetAttribute("src");
-
-            // Assert
-            iframeSrc.Should().StartWithEquivalentOf("https://open.spotify.com/embed/track/1LHZMWefF9502NPfArRfvP");
-        }
-
-        [Fact]
-        public async Task Message_with_a_YouTube_video_is_rendered_using_an_iframe()
-        {
-            // Act
-            var message = await ExportWrapper.GetMessageAsHtmlAsync(
-                ChannelIds.EmbedTestCases,
-                Snowflake.Parse("866472508588294165")
-            );
-
-            var iframeSrc = message.QuerySelector("iframe")?.GetAttribute("src");
-
-            // Assert
-            iframeSrc.Should().StartWithEquivalentOf("https://www.youtube.com/embed/qOWW4OlgbvE");
-        }
+        message.QuerySelectorAll(".chatlog__embed").Should().ContainSingle();
     }
 }

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

@@ -0,0 +1,79 @@
+using System.IO;
+using System.Linq;
+using System.Threading.Tasks;
+using AngleSharp.Dom;
+using CliFx.Infrastructure;
+using DiscordChatExporter.Cli.Commands;
+using DiscordChatExporter.Cli.Tests.Fixtures;
+using DiscordChatExporter.Cli.Tests.Infra;
+using DiscordChatExporter.Cli.Tests.TestData;
+using DiscordChatExporter.Cli.Tests.Utils;
+using DiscordChatExporter.Core.Exporting;
+using FluentAssertions;
+using Xunit;
+
+namespace DiscordChatExporter.Cli.Tests.Specs.HtmlWriting;
+
+public class GroupingSpecs : IClassFixture<TempOutputFixture>
+{
+    private readonly TempOutputFixture _tempOutput;
+
+    public GroupingSpecs(TempOutputFixture tempOutput)
+    {
+        _tempOutput = tempOutput;
+    }
+
+    [Fact]
+    public async Task Messages_are_grouped_correctly()
+    {
+        // https://github.com/Tyrrrz/DiscordChatExporter/issues/152
+
+        // Arrange
+        var filePath = _tempOutput.GetTempFilePath();
+
+        // Act
+        await new ExportChannelsCommand
+        {
+            Token = Secrets.DiscordToken,
+            ChannelIds = new[] { ChannelIds.GroupingTestCases },
+            ExportFormat = ExportFormat.HtmlDark,
+            OutputPath = filePath
+        }.ExecuteAsync(new FakeConsole());
+
+        // Assert
+        var messageGroups = Html
+            .Parse(await File.ReadAllTextAsync(filePath))
+            .QuerySelectorAll(".chatlog__message-group");
+
+        messageGroups.Should().HaveCount(2);
+
+        messageGroups[0]
+            .QuerySelectorAll(".chatlog__content")
+            .Select(e => e.Text())
+            .Should()
+            .ContainInOrder(
+                "First",
+                "Second",
+                "Third",
+                "Fourth",
+                "Fifth",
+                "Sixth",
+                "Seventh",
+                "Eighth",
+                "Ninth",
+                "Tenth"
+            );
+
+        messageGroups[1]
+            .QuerySelectorAll(".chatlog__content")
+            .Select(e => e.Text())
+            .Should()
+            .ContainInOrder(
+                "Eleventh",
+                "Twelveth",
+                "Thirteenth",
+                "Fourteenth",
+                "Fifteenth"
+            );
+    }
+}

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

@@ -6,61 +6,67 @@ using DiscordChatExporter.Core.Discord;
 using FluentAssertions;
 using Xunit;
 
-namespace DiscordChatExporter.Cli.Tests.Specs.HtmlWriting
+namespace DiscordChatExporter.Cli.Tests.Specs.HtmlWriting;
+
+public class MentionSpecs : IClassFixture<ExportWrapperFixture>
 {
-    public record MentionSpecs(ExportWrapperFixture ExportWrapper) : IClassFixture<ExportWrapperFixture>
+    private readonly ExportWrapperFixture _exportWrapper;
+
+    public MentionSpecs(ExportWrapperFixture exportWrapper)
     {
-        [Fact]
-        public async Task User_mention_is_rendered_correctly()
-        {
-            // Act
-            var message = await ExportWrapper.GetMessageAsHtmlAsync(
-                ChannelIds.MentionTestCases,
-                Snowflake.Parse("866458840245076028")
-            );
+        _exportWrapper = exportWrapper;
+    }
 
-            // Assert
-            message.Text().Trim().Should().Be("User mention: @Tyrrrz");
-            message.InnerHtml.Should().Contain("Tyrrrz#5447");
-        }
+    [Fact]
+    public async Task User_mention_is_rendered_correctly()
+    {
+        // Act
+        var message = await _exportWrapper.GetMessageAsHtmlAsync(
+            ChannelIds.MentionTestCases,
+            Snowflake.Parse("866458840245076028")
+        );
 
-        [Fact]
-        public async Task Text_channel_mention_is_rendered_correctly()
-        {
-            // Act
-            var message = await ExportWrapper.GetMessageAsHtmlAsync(
-                ChannelIds.MentionTestCases,
-                Snowflake.Parse("866459040480624680")
-            );
+        // Assert
+        message.Text().Should().Contain("User mention: @Tyrrrz");
+        message.InnerHtml.Should().Contain("Tyrrrz#5447");
+    }
 
-            // Assert
-            message.Text().Trim().Should().Be("Text channel mention: #mention-tests");
-        }
+    [Fact]
+    public async Task Text_channel_mention_is_rendered_correctly()
+    {
+        // Act
+        var message = await _exportWrapper.GetMessageAsHtmlAsync(
+            ChannelIds.MentionTestCases,
+            Snowflake.Parse("866459040480624680")
+        );
 
-        [Fact]
-        public async Task Voice_channel_mention_is_rendered_correctly()
-        {
-            // Act
-            var message = await ExportWrapper.GetMessageAsHtmlAsync(
-                ChannelIds.MentionTestCases,
-                Snowflake.Parse("866459175462633503")
-            );
+        // Assert
+        message.Text().Should().Contain("Text channel mention: #mention-tests");
+    }
 
-            // Assert
-            message.Text().Trim().Should().Be("Voice channel mention: 🔊chaos-vc");
-        }
+    [Fact]
+    public async Task Voice_channel_mention_is_rendered_correctly()
+    {
+        // Act
+        var message = await _exportWrapper.GetMessageAsHtmlAsync(
+            ChannelIds.MentionTestCases,
+            Snowflake.Parse("866459175462633503")
+        );
 
-        [Fact]
-        public async Task Role_mention_is_rendered_correctly()
-        {
-            // Act
-            var message = await ExportWrapper.GetMessageAsHtmlAsync(
-                ChannelIds.MentionTestCases,
-                Snowflake.Parse("866459254693429258")
-            );
+        // Assert
+        message.Text().Should().Contain("Voice channel mention: 🔊chaos-vc");
+    }
 
-            // Assert
-            message.Text().Trim().Should().Be("Role mention: @Role 1");
-        }
+    [Fact]
+    public async Task Role_mention_is_rendered_correctly()
+    {
+        // Act
+        var message = await _exportWrapper.GetMessageAsHtmlAsync(
+            ChannelIds.MentionTestCases,
+            Snowflake.Parse("866459254693429258")
+        );
+
+        // Assert
+        message.Text().Should().Contain("Role mention: @Role 1");
     }
 }

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

@@ -6,52 +6,62 @@ using DiscordChatExporter.Core.Discord;
 using FluentAssertions;
 using Xunit;
 
-namespace DiscordChatExporter.Cli.Tests.Specs.HtmlWriting
+namespace DiscordChatExporter.Cli.Tests.Specs.HtmlWriting;
+
+public class ReplySpecs : IClassFixture<ExportWrapperFixture>
 {
-    public record ReplySpecs(ExportWrapperFixture ExportWrapper) : IClassFixture<ExportWrapperFixture>
+    private readonly ExportWrapperFixture _exportWrapper;
+
+    public ReplySpecs(ExportWrapperFixture exportWrapper)
     {
-        [Fact]
-        public async Task Reply_to_a_normal_message_is_rendered_correctly()
-        {
-            // Act
-            var message = await ExportWrapper.GetMessageAsHtmlAsync(
-                ChannelIds.ReplyTestCases,
-                Snowflake.Parse("866460738239725598")
-            );
+        _exportWrapper = exportWrapper;
+    }
 
-            // Assert
-            message.Text().Trim().Should().Be("reply to original");
-            message.QuerySelector(".chatlog__reference-link")?.Text().Trim().Should().Be("original");
-        }
+    [Fact]
+    public async Task Reply_to_a_normal_message_is_rendered_correctly()
+    {
+        // Act
+        var message = await _exportWrapper.GetMessageAsHtmlAsync(
+            ChannelIds.ReplyTestCases,
+            Snowflake.Parse("866460738239725598")
+        );
 
-        [Fact]
-        public async Task Reply_to_a_deleted_message_is_rendered_correctly()
-        {
-            // Act
-            var message = await ExportWrapper.GetMessageAsHtmlAsync(
-                ChannelIds.ReplyTestCases,
-                Snowflake.Parse("866460975388819486")
-            );
+        // Assert
+        message.Text().Should().Contain("reply to original");
+        message.QuerySelector(".chatlog__reference-link")?.Text().Should().Contain("original");
+    }
 
-            // Assert
-            message.Text().Trim().Should().Be("reply to deleted");
-            message.QuerySelector(".chatlog__reference-link")?.Text().Trim().Should()
-                .Be("Original message was deleted or could not be loaded.");
-        }
+    [Fact]
+    public async Task Reply_to_a_deleted_message_is_rendered_correctly()
+    {
+        // https://github.com/Tyrrrz/DiscordChatExporter/issues/645
 
-        [Fact]
-        public async Task Reply_to_a_empty_message_with_attachment_is_rendered_correctly()
-        {
-            // Act
-            var message = await ExportWrapper.GetMessageAsHtmlAsync(
-                ChannelIds.ReplyTestCases,
-                Snowflake.Parse("866462470335627294")
-            );
+        // Act
+        var message = await _exportWrapper.GetMessageAsHtmlAsync(
+            ChannelIds.ReplyTestCases,
+            Snowflake.Parse("866460975388819486")
+        );
 
-            // Assert
-            message.Text().Trim().Should().Be("reply to attachment");
-            message.QuerySelector(".chatlog__reference-link")?.Text().Trim().Should()
-                .Be("Click to see attachment 🖼️");
-        }
+        // Assert
+        message.Text().Should().Contain("reply to deleted");
+        message.QuerySelector(".chatlog__reference-link")?.Text().Should().Contain(
+            "Original message was deleted or could not be loaded."
+        );
+    }
+
+    [Fact]
+    public async Task Reply_to_an_empty_message_with_attachment_is_rendered_correctly()
+    {
+        // https://github.com/Tyrrrz/DiscordChatExporter/issues/634
+
+        // Act
+        var message = await _exportWrapper.GetMessageAsHtmlAsync(
+            ChannelIds.ReplyTestCases,
+            Snowflake.Parse("866462470335627294")
+        );
+
+        // Assert
+        message.Text().Should().Contain("reply to attachment");
+        message.QuerySelector(".chatlog__reference-link")?.Text().Should().Contain("Click to see attachment");
     }
 }

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

@@ -0,0 +1,46 @@
+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 class StickerSpecs : IClassFixture<ExportWrapperFixture>
+{
+    private readonly ExportWrapperFixture _exportWrapper;
+
+    public StickerSpecs(ExportWrapperFixture exportWrapper)
+    {
+        _exportWrapper = exportWrapper;
+    }
+
+    [Fact]
+    public async Task Message_with_a_PNG_based_sticker_is_rendered_correctly()
+    {
+        // Act
+        var message = await _exportWrapper.GetMessageAsHtmlAsync(
+            ChannelIds.StickerTestCases,
+            Snowflake.Parse("939670623158943754")
+        );
+
+        // Assert
+        var stickerUrl = message.QuerySelector("[title='rock'] img")?.GetAttribute("src");
+        stickerUrl.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")
+        );
+
+        // Assert
+        var stickerUrl = message.QuerySelector("[title='Yikes'] [data-source]")?.GetAttribute("data-source");
+        stickerUrl.Should().Be("https://discord.com/stickers/816087132447178774.json");
+    }
+}

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

@@ -6,96 +6,98 @@ using DiscordChatExporter.Core.Discord;
 using FluentAssertions;
 using Xunit;
 
-namespace DiscordChatExporter.Cli.Tests.Specs.JsonWriting
+namespace DiscordChatExporter.Cli.Tests.Specs.JsonWriting;
+
+public class AttachmentSpecs : IClassFixture<ExportWrapperFixture>
 {
-    public record AttachmentSpecs(ExportWrapperFixture ExportWrapper) : IClassFixture<ExportWrapperFixture>
+    private readonly ExportWrapperFixture _exportWrapper;
+
+    public AttachmentSpecs(ExportWrapperFixture exportWrapper)
     {
-        [Fact]
-        public async Task Message_with_a_generic_attachment_is_rendered_correctly()
-        {
-            // Act
-            var message = await ExportWrapper.GetMessageAsJsonAsync(
-                ChannelIds.AttachmentTestCases,
-                Snowflake.Parse("885587844989612074")
-            );
+        _exportWrapper = exportWrapper;
+    }
 
-            var attachments = message.GetProperty("attachments").EnumerateArray().ToArray();
+    [Fact]
+    public async Task Message_with_a_generic_attachment_is_rendered_correctly()
+    {
+        // Act
+        var message = await _exportWrapper.GetMessageAsJsonAsync(
+            ChannelIds.AttachmentTestCases,
+            Snowflake.Parse("885587844989612074")
+        );
 
-            // Assert
-            message.GetProperty("content").GetString().Should().Be("Generic file attachment");
+        // Assert
+        message.GetProperty("content").GetString().Should().Be("Generic file attachment");
 
-            attachments.Should().HaveCount(1);
-            attachments.Single().GetProperty("url").GetString().Should().StartWithEquivalentOf(
-                "https://cdn.discordapp.com/attachments/885587741654536192/885587844964417596/Test.txt"
-            );
-            attachments.Single().GetProperty("fileName").GetString().Should().Be("Test.txt");
-            attachments.Single().GetProperty("fileSizeBytes").GetInt64().Should().Be(11);
-        }
+        var attachments = message.GetProperty("attachments").EnumerateArray().ToArray();
+        attachments.Should().HaveCount(1);
+        attachments.Single().GetProperty("url").GetString().Should().Be(
+            "https://cdn.discordapp.com/attachments/885587741654536192/885587844964417596/Test.txt"
+        );
+        attachments.Single().GetProperty("fileName").GetString().Should().Be("Test.txt");
+        attachments.Single().GetProperty("fileSizeBytes").GetInt64().Should().Be(11);
+    }
 
-        [Fact]
-        public async Task Message_with_an_image_attachment_is_rendered_correctly()
-        {
-            // Act
-            var message = await ExportWrapper.GetMessageAsJsonAsync(
-                ChannelIds.AttachmentTestCases,
-                Snowflake.Parse("885654862656843786")
-            );
+    [Fact]
+    public async Task Message_with_an_image_attachment_is_rendered_correctly()
+    {
+        // Act
+        var message = await _exportWrapper.GetMessageAsJsonAsync(
+            ChannelIds.AttachmentTestCases,
+            Snowflake.Parse("885654862656843786")
+        );
 
-            var attachments = message.GetProperty("attachments").EnumerateArray().ToArray();
+        // Assert
+        message.GetProperty("content").GetString().Should().Be("Image attachment");
 
-            // Assert
-            message.GetProperty("content").GetString().Should().Be("Image attachment");
+        var attachments = message.GetProperty("attachments").EnumerateArray().ToArray();
+        attachments.Should().HaveCount(1);
+        attachments.Single().GetProperty("url").GetString().Should().Be(
+            "https://cdn.discordapp.com/attachments/885587741654536192/885654862430359613/bird-thumbnail.png"
+        );
+        attachments.Single().GetProperty("fileName").GetString().Should().Be("bird-thumbnail.png");
+        attachments.Single().GetProperty("fileSizeBytes").GetInt64().Should().Be(466335);
+    }
 
-            attachments.Should().HaveCount(1);
-            attachments.Single().GetProperty("url").GetString().Should().StartWithEquivalentOf(
-                "https://cdn.discordapp.com/attachments/885587741654536192/885654862430359613/bird-thumbnail.png"
-            );
-            attachments.Single().GetProperty("fileName").GetString().Should().Be("bird-thumbnail.png");
-            attachments.Single().GetProperty("fileSizeBytes").GetInt64().Should().Be(466335);
-        }
+    [Fact]
+    public async Task Message_with_a_video_attachment_is_rendered_correctly()
+    {
+        // Act
+        var message = await _exportWrapper.GetMessageAsJsonAsync(
+            ChannelIds.AttachmentTestCases,
+            Snowflake.Parse("885655761919836171")
+        );
 
-        [Fact]
-        public async Task Message_with_a_video_attachment_is_rendered_correctly()
-        {
-            // Act
-            var message = await ExportWrapper.GetMessageAsJsonAsync(
-                ChannelIds.AttachmentTestCases,
-                Snowflake.Parse("885655761919836171")
-            );
+        // Assert
+        message.GetProperty("content").GetString().Should().Be("Video attachment");
 
-            var attachments = message.GetProperty("attachments").EnumerateArray().ToArray();
+        var attachments = message.GetProperty("attachments").EnumerateArray().ToArray();
+        attachments.Should().HaveCount(1);
+        attachments.Single().GetProperty("url").GetString().Should().Be(
+            "https://cdn.discordapp.com/attachments/885587741654536192/885655761512968233/file_example_MP4_640_3MG.mp4"
+        );
+        attachments.Single().GetProperty("fileName").GetString().Should().Be("file_example_MP4_640_3MG.mp4");
+        attachments.Single().GetProperty("fileSizeBytes").GetInt64().Should().Be(3114374);
+    }
 
-            // Assert
-            message.GetProperty("content").GetString().Should().Be("Video attachment");
+    [Fact]
+    public async Task Message_with_an_audio_attachment_is_rendered_correctly()
+    {
+        // Act
+        var message = await _exportWrapper.GetMessageAsJsonAsync(
+            ChannelIds.AttachmentTestCases,
+            Snowflake.Parse("885656175620808734")
+        );
 
-            attachments.Should().HaveCount(1);
-            attachments.Single().GetProperty("url").GetString().Should().StartWithEquivalentOf(
-                "https://cdn.discordapp.com/attachments/885587741654536192/885655761512968233/file_example_MP4_640_3MG.mp4"
-            );
-            attachments.Single().GetProperty("fileName").GetString().Should().Be("file_example_MP4_640_3MG.mp4");
-            attachments.Single().GetProperty("fileSizeBytes").GetInt64().Should().Be(3114374);
-        }
+        // Assert
+        message.GetProperty("content").GetString().Should().Be("Audio attachment");
 
-        [Fact]
-        public async Task Message_with_an_audio_attachment_is_rendered_correctly()
-        {
-            // Act
-            var message = await ExportWrapper.GetMessageAsJsonAsync(
-                ChannelIds.AttachmentTestCases,
-                Snowflake.Parse("885656175620808734")
-            );
-
-            var attachments = message.GetProperty("attachments").EnumerateArray().ToArray();
-
-            // Assert
-            message.GetProperty("content").GetString().Should().Be("Audio attachment");
-
-            attachments.Should().HaveCount(1);
-            attachments.Single().GetProperty("url").GetString().Should().StartWithEquivalentOf(
-                "https://cdn.discordapp.com/attachments/885587741654536192/885656175348187146/file_example_MP3_1MG.mp3"
-            );
-            attachments.Single().GetProperty("fileName").GetString().Should().Be("file_example_MP3_1MG.mp3");
-            attachments.Single().GetProperty("fileSizeBytes").GetInt64().Should().Be(1087849);
-        }
+        var attachments = message.GetProperty("attachments").EnumerateArray().ToArray();
+        attachments.Should().HaveCount(1);
+        attachments.Single().GetProperty("url").GetString().Should().Be(
+            "https://cdn.discordapp.com/attachments/885587741654536192/885656175348187146/file_example_MP3_1MG.mp3"
+        );
+        attachments.Single().GetProperty("fileName").GetString().Should().Be("file_example_MP3_1MG.mp3");
+        attachments.Single().GetProperty("fileSizeBytes").GetInt64().Should().Be(1087849);
     }
 }

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

@@ -5,38 +5,44 @@ using DiscordChatExporter.Cli.Tests.TestData;
 using FluentAssertions;
 using Xunit;
 
-namespace DiscordChatExporter.Cli.Tests.Specs.JsonWriting
+namespace DiscordChatExporter.Cli.Tests.Specs.JsonWriting;
+
+public class ContentSpecs : IClassFixture<ExportWrapperFixture>
 {
-    public record ContentSpecs(ExportWrapperFixture ExportWrapper) : IClassFixture<ExportWrapperFixture>
+    private readonly ExportWrapperFixture _exportWrapper;
+
+    public ContentSpecs(ExportWrapperFixture exportWrapper)
     {
-        [Fact]
-        public async Task Messages_are_exported_correctly()
-        {
-            // Act
-            var messages = await ExportWrapper.GetMessagesAsJsonAsync(ChannelIds.DateRangeTestCases);
+        _exportWrapper = exportWrapper;
+    }
 
-            // Assert
-            messages.Select(j => j.GetProperty("id").GetString()).Should().Equal(
-                "866674314627121232",
-                "866710679758045195",
-                "866732113319428096",
-                "868490009366396958",
-                "868505966528835604",
-                "868505969821364245",
-                "868505973294268457",
-                "885169254029213696"
-            );
+    [Fact]
+    public async Task Messages_are_exported_correctly()
+    {
+        // Act
+        var messages = await _exportWrapper.GetMessagesAsJsonAsync(ChannelIds.DateRangeTestCases);
 
-            messages.Select(j => j.GetProperty("content").GetString()).Should().Equal(
-                "Hello world",
-                "Goodbye world",
-                "Foo bar",
-                "Hurdle Durdle",
-                "One",
-                "Two",
-                "Three",
-                "Yeet"
-            );
-        }
+        // Assert
+        messages.Select(j => j.GetProperty("id").GetString()).Should().Equal(
+            "866674314627121232",
+            "866710679758045195",
+            "866732113319428096",
+            "868490009366396958",
+            "868505966528835604",
+            "868505969821364245",
+            "868505973294268457",
+            "885169254029213696"
+        );
+
+        messages.Select(j => j.GetProperty("content").GetString()).Should().Equal(
+            "Hello world",
+            "Goodbye world",
+            "Foo bar",
+            "Hurdle Durdle",
+            "One",
+            "Two",
+            "Three",
+            "Yeet"
+        );
     }
 }

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

@@ -6,53 +6,58 @@ using DiscordChatExporter.Core.Discord;
 using FluentAssertions;
 using Xunit;
 
-namespace DiscordChatExporter.Cli.Tests.Specs.JsonWriting
+namespace DiscordChatExporter.Cli.Tests.Specs.JsonWriting;
+
+public class EmbedSpecs : IClassFixture<ExportWrapperFixture>
 {
-    public record EmbedSpecs(ExportWrapperFixture ExportWrapper) : IClassFixture<ExportWrapperFixture>
+    private readonly ExportWrapperFixture _exportWrapper;
+
+    public EmbedSpecs(ExportWrapperFixture exportWrapper)
     {
-        [Fact]
-        public async Task Message_with_an_embed_is_rendered_correctly()
-        {
-            // Act
-            var message = await ExportWrapper.GetMessageAsJsonAsync(
-                ChannelIds.EmbedTestCases,
-                Snowflake.Parse("866769910729146400")
-            );
+        _exportWrapper = exportWrapper;
+    }
 
-            var embed = message
-                .GetProperty("embeds")
-                .EnumerateArray()
-                .Single();
+    [Fact]
+    public async Task Message_with_an_embed_is_rendered_correctly()
+    {
+        // Act
+        var message = await _exportWrapper.GetMessageAsJsonAsync(
+            ChannelIds.EmbedTestCases,
+            Snowflake.Parse("866769910729146400")
+        );
 
-            var embedAuthor = embed.GetProperty("author");
-            var embedThumbnail = embed.GetProperty("thumbnail");
-            var embedFooter = embed.GetProperty("footer");
-            var embedFields = embed.GetProperty("fields").EnumerateArray().ToArray();
+        // Assert
+        var embed = message.GetProperty("embeds").EnumerateArray().Single();
+        embed.GetProperty("title").GetString().Should().Be("Embed title");
+        embed.GetProperty("url").GetString().Should().Be("https://example.com");
+        embed.GetProperty("timestamp").GetString().Should().Be("2021-07-14T21:00:00+00:00");
+        embed.GetProperty("description").GetString().Should().Be("**Embed** _description_");
+        embed.GetProperty("color").GetString().Should().Be("#58B9FF");
 
-            // Assert
-            embed.GetProperty("title").GetString().Should().Be("Embed title");
-            embed.GetProperty("url").GetString().Should().Be("https://example.com");
-            embed.GetProperty("timestamp").GetString().Should().Be("2021-07-14T21:00:00+00:00");
-            embed.GetProperty("description").GetString().Should().Be("**Embed** _description_");
-            embed.GetProperty("color").GetString().Should().Be("#58B9FF");
-            embedAuthor.GetProperty("name").GetString().Should().Be("Embed author");
-            embedAuthor.GetProperty("url").GetString().Should().Be("https://example.com/author");
-            embedAuthor.GetProperty("iconUrl").GetString().Should().NotBeNullOrWhiteSpace();
-            embedThumbnail.GetProperty("url").GetString().Should().NotBeNullOrWhiteSpace();
-            embedThumbnail.GetProperty("width").GetInt32().Should().Be(120);
-            embedThumbnail.GetProperty("height").GetInt32().Should().Be(120);
-            embedFooter.GetProperty("text").GetString().Should().Be("Embed footer");
-            embedFooter.GetProperty("iconUrl").GetString().Should().NotBeNullOrWhiteSpace();
-            embedFields.Should().HaveCount(3);
-            embedFields[0].GetProperty("name").GetString().Should().Be("Field 1");
-            embedFields[0].GetProperty("value").GetString().Should().Be("Value 1");
-            embedFields[0].GetProperty("isInline").GetBoolean().Should().BeTrue();
-            embedFields[1].GetProperty("name").GetString().Should().Be("Field 2");
-            embedFields[1].GetProperty("value").GetString().Should().Be("Value 2");
-            embedFields[1].GetProperty("isInline").GetBoolean().Should().BeTrue();
-            embedFields[2].GetProperty("name").GetString().Should().Be("Field 3");
-            embedFields[2].GetProperty("value").GetString().Should().Be("Value 3");
-            embedFields[2].GetProperty("isInline").GetBoolean().Should().BeTrue();
-        }
+        var embedAuthor = embed.GetProperty("author");
+        embedAuthor.GetProperty("name").GetString().Should().Be("Embed author");
+        embedAuthor.GetProperty("url").GetString().Should().Be("https://example.com/author");
+        embedAuthor.GetProperty("iconUrl").GetString().Should().NotBeNullOrWhiteSpace();
+
+        var embedThumbnail = embed.GetProperty("thumbnail");
+        embedThumbnail.GetProperty("url").GetString().Should().NotBeNullOrWhiteSpace();
+        embedThumbnail.GetProperty("width").GetInt32().Should().Be(120);
+        embedThumbnail.GetProperty("height").GetInt32().Should().Be(120);
+
+        var embedFooter = embed.GetProperty("footer");
+        embedFooter.GetProperty("text").GetString().Should().Be("Embed footer");
+        embedFooter.GetProperty("iconUrl").GetString().Should().NotBeNullOrWhiteSpace();
+
+        var embedFields = embed.GetProperty("fields").EnumerateArray().ToArray();
+        embedFields.Should().HaveCount(3);
+        embedFields[0].GetProperty("name").GetString().Should().Be("Field 1");
+        embedFields[0].GetProperty("value").GetString().Should().Be("Value 1");
+        embedFields[0].GetProperty("isInline").GetBoolean().Should().BeTrue();
+        embedFields[1].GetProperty("name").GetString().Should().Be("Field 2");
+        embedFields[1].GetProperty("value").GetString().Should().Be("Value 2");
+        embedFields[1].GetProperty("isInline").GetBoolean().Should().BeTrue();
+        embedFields[2].GetProperty("name").GetString().Should().Be("Field 3");
+        embedFields[2].GetProperty("value").GetString().Should().Be("Value 3");
+        embedFields[2].GetProperty("isInline").GetBoolean().Should().BeTrue();
     }
 }

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

@@ -6,66 +6,73 @@ using DiscordChatExporter.Core.Discord;
 using FluentAssertions;
 using Xunit;
 
-namespace DiscordChatExporter.Cli.Tests.Specs.JsonWriting
+namespace DiscordChatExporter.Cli.Tests.Specs.JsonWriting;
+
+public class MentionSpecs : IClassFixture<ExportWrapperFixture>
 {
-    public record MentionSpecs(ExportWrapperFixture ExportWrapper) : IClassFixture<ExportWrapperFixture>
+    private readonly ExportWrapperFixture _exportWrapper;
+
+    public MentionSpecs(ExportWrapperFixture exportWrapper)
     {
-        [Fact]
-        public async Task User_mention_is_rendered_correctly()
-        {
-            // Act
-            var message = await ExportWrapper.GetMessageAsJsonAsync(
-                ChannelIds.MentionTestCases,
-                Snowflake.Parse("866458840245076028")
-            );
+        _exportWrapper = exportWrapper;
+    }
 
-            // Assert
-            message.GetProperty("content").GetString().Should().Be("User mention: @Tyrrrz");
+    [Fact]
+    public async Task User_mention_is_rendered_correctly()
+    {
+        // Act
+        var message = await _exportWrapper.GetMessageAsJsonAsync(
+            ChannelIds.MentionTestCases,
+            Snowflake.Parse("866458840245076028")
+        );
 
-            message
-                .GetProperty("mentions")
-                .EnumerateArray()
-                .Select(j => j.GetProperty("id").GetString())
-                .Should().Contain("128178626683338752");
-        }
+        // Assert
+        message.GetProperty("content").GetString().Should().Be("User mention: @Tyrrrz");
 
-        [Fact]
-        public async Task Text_channel_mention_is_rendered_correctly()
-        {
-            // Act
-            var message = await ExportWrapper.GetMessageAsJsonAsync(
-                ChannelIds.MentionTestCases,
-                Snowflake.Parse("866459040480624680")
-            );
+        message
+            .GetProperty("mentions")
+            .EnumerateArray()
+            .Select(j => j.GetProperty("id").GetString())
+            .Should()
+            .Contain("128178626683338752");
+    }
 
-            // Assert
-            message.GetProperty("content").GetString().Should().Be("Text channel mention: #mention-tests");
-        }
+    [Fact]
+    public async Task Text_channel_mention_is_rendered_correctly()
+    {
+        // Act
+        var message = await _exportWrapper.GetMessageAsJsonAsync(
+            ChannelIds.MentionTestCases,
+            Snowflake.Parse("866459040480624680")
+        );
 
-        [Fact]
-        public async Task Voice_channel_mention_is_rendered_correctly()
-        {
-            // Act
-            var message = await ExportWrapper.GetMessageAsJsonAsync(
-                ChannelIds.MentionTestCases,
-                Snowflake.Parse("866459175462633503")
-            );
+        // Assert
+        message.GetProperty("content").GetString().Should().Be("Text channel mention: #mention-tests");
+    }
 
-            // Assert
-            message.GetProperty("content").GetString().Should().Be("Voice channel mention: #chaos-vc [voice]");
-        }
+    [Fact]
+    public async Task Voice_channel_mention_is_rendered_correctly()
+    {
+        // Act
+        var message = await _exportWrapper.GetMessageAsJsonAsync(
+            ChannelIds.MentionTestCases,
+            Snowflake.Parse("866459175462633503")
+        );
 
-        [Fact]
-        public async Task Role_mention_is_rendered_correctly()
-        {
-            // Act
-            var message = await ExportWrapper.GetMessageAsJsonAsync(
-                ChannelIds.MentionTestCases,
-                Snowflake.Parse("866459254693429258")
-            );
+        // Assert
+        message.GetProperty("content").GetString().Should().Be("Voice channel mention: #chaos-vc [voice]");
+    }
 
-            // Assert
-            message.GetProperty("content").GetString().Should().Be("Role mention: @Role 1");
-        }
+    [Fact]
+    public async Task Role_mention_is_rendered_correctly()
+    {
+        // Act
+        var message = await _exportWrapper.GetMessageAsJsonAsync(
+            ChannelIds.MentionTestCases,
+            Snowflake.Parse("866459254693429258")
+        );
+
+        // Assert
+        message.GetProperty("content").GetString().Should().Be("Role mention: @Role 1");
     }
 }

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

@@ -0,0 +1,61 @@
+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 class StickerSpecs : IClassFixture<ExportWrapperFixture>
+{
+    private readonly ExportWrapperFixture _exportWrapper;
+
+    public StickerSpecs(ExportWrapperFixture exportWrapper)
+    {
+        _exportWrapper = exportWrapper;
+    }
+
+    [Fact]
+    public async Task Message_with_a_PNG_based_sticker_is_rendered_correctly()
+    {
+        // Act
+        var message = await _exportWrapper.GetMessageAsJsonAsync(
+            ChannelIds.StickerTestCases,
+            Snowflake.Parse("939670623158943754")
+        );
+
+        // Assert
+        var sticker = message
+            .GetProperty("stickers")
+            .EnumerateArray()
+            .Single();
+
+        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")
+        );
+
+        // Assert
+        var sticker = message
+            .GetProperty("stickers")
+            .EnumerateArray()
+            .Single();
+
+        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

@@ -10,58 +10,62 @@ using DiscordChatExporter.Core.Exporting.Partitioning;
 using FluentAssertions;
 using Xunit;
 
-namespace DiscordChatExporter.Cli.Tests.Specs
+namespace DiscordChatExporter.Cli.Tests.Specs;
+
+public class PartitioningSpecs : IClassFixture<TempOutputFixture>
 {
-    public record PartitioningSpecs(TempOutputFixture TempOutput) : IClassFixture<TempOutputFixture>
+    private readonly TempOutputFixture _tempOutput;
+
+    public PartitioningSpecs(TempOutputFixture tempOutput)
     {
-        [Fact]
-        public async Task Messages_partitioned_by_count_are_split_into_multiple_files_correctly()
+        _tempOutput = tempOutput;
+    }
+
+    [Fact]
+    public async Task Messages_partitioned_by_count_are_split_into_a_corresponding_number_of_files()
+    {
+        // Arrange
+        var filePath = _tempOutput.GetTempFilePath();
+        var fileNameWithoutExt = Path.GetFileNameWithoutExtension(filePath);
+        var dirPath = Path.GetDirectoryName(filePath) ?? Directory.GetCurrentDirectory();
+
+        // Act
+        await new ExportChannelsCommand
         {
-            // Arrange
-            var filePath = TempOutput.GetTempFilePath();
-            var fileNameWithoutExt = Path.GetFileNameWithoutExtension(filePath);
-            var dirPath = Path.GetDirectoryName(filePath) ?? Directory.GetCurrentDirectory();
+            Token = Secrets.DiscordToken,
+            ChannelIds = new[] { ChannelIds.DateRangeTestCases },
+            ExportFormat = ExportFormat.HtmlDark,
+            OutputPath = filePath,
+            PartitionLimit = PartitionLimit.Parse("3")
+        }.ExecuteAsync(new FakeConsole());
 
-            // Act
-            await new ExportChannelsCommand
-            {
-                TokenValue = Secrets.DiscordToken,
-                IsBotToken = Secrets.IsDiscordTokenBot,
-                ChannelIds = new[] { ChannelIds.DateRangeTestCases },
-                ExportFormat = ExportFormat.HtmlDark,
-                OutputPath = filePath,
-                PartitionLimit = PartitionLimit.Parse("3")
-            }.ExecuteAsync(new FakeConsole());
+        // Assert
+        Directory.EnumerateFiles(dirPath, fileNameWithoutExt + "*")
+            .Should()
+            .HaveCount(3);
+    }
 
-            // Assert
-            Directory.EnumerateFiles(dirPath, fileNameWithoutExt + "*")
-                .Should()
-                .HaveCount(3);
-        }
+    [Fact]
+    public async Task Messages_partitioned_by_file_size_are_split_into_a_corresponding_number_of_files()
+    {
+        // Arrange
+        var filePath = _tempOutput.GetTempFilePath();
+        var fileNameWithoutExt = Path.GetFileNameWithoutExtension(filePath);
+        var dirPath = Path.GetDirectoryName(filePath) ?? Directory.GetCurrentDirectory();
 
-        [Fact]
-        public async Task Messages_partitioned_by_file_size_are_split_into_multiple_files_correctly()
+        // Act
+        await new ExportChannelsCommand
         {
-            // Arrange
-            var filePath = TempOutput.GetTempFilePath();
-            var fileNameWithoutExt = Path.GetFileNameWithoutExtension(filePath);
-            var dirPath = Path.GetDirectoryName(filePath) ?? Directory.GetCurrentDirectory();
+            Token = Secrets.DiscordToken,
+            ChannelIds = new[] { ChannelIds.DateRangeTestCases },
+            ExportFormat = ExportFormat.HtmlDark,
+            OutputPath = filePath,
+            PartitionLimit = PartitionLimit.Parse("1kb")
+        }.ExecuteAsync(new FakeConsole());
 
-            // Act
-            await new ExportChannelsCommand
-            {
-                TokenValue = Secrets.DiscordToken,
-                IsBotToken = Secrets.IsDiscordTokenBot,
-                ChannelIds = new[] { ChannelIds.DateRangeTestCases },
-                ExportFormat = ExportFormat.HtmlDark,
-                OutputPath = filePath,
-                PartitionLimit = PartitionLimit.Parse("20kb")
-            }.ExecuteAsync(new FakeConsole());
-
-            // Assert
-            Directory.EnumerateFiles(dirPath, fileNameWithoutExt + "*")
-                .Should()
-                .HaveCount(2);
-        }
+        // Assert
+        Directory.EnumerateFiles(dirPath, fileNameWithoutExt + "*")
+            .Should()
+            .HaveCount(8);
     }
 }

DiscordChatExporter.Cli.Tests/Specs/PlainTextWriting/ContentSpecs.cs

@@ -4,28 +4,34 @@ using DiscordChatExporter.Cli.Tests.TestData;
 using FluentAssertions;
 using Xunit;
 
-namespace DiscordChatExporter.Cli.Tests.Specs.PlainTextWriting
-{
-    public record ContentSpecs(ExportWrapperFixture ExportWrapper) : IClassFixture<ExportWrapperFixture>
-    {
-        [Fact]
-        public async Task Messages_are_exported_correctly()
-        {
-            // Act
-            var document = await ExportWrapper.ExportAsPlainTextAsync(ChannelIds.DateRangeTestCases);
+namespace DiscordChatExporter.Cli.Tests.Specs.PlainTextWriting;
 
-            // Assert
-            document.Should().ContainAll(
-                "Tyrrrz#5447",
-                "Hello world",
-                "Goodbye world",
-                "Foo bar",
-                "Hurdle Durdle",
-                "One",
-                "Two",
-                "Three",
-                "Yeet"
-            );
-        }
+public class ContentSpecs : IClassFixture<ExportWrapperFixture>
+{
+    private readonly ExportWrapperFixture _exportWrapper;
+
+    public ContentSpecs(ExportWrapperFixture exportWrapper)
+    {
+        _exportWrapper = exportWrapper;
+    }
+
+    [Fact]
+    public async Task Messages_are_exported_correctly()
+    {
+        // Act
+        var document = await _exportWrapper.ExportAsPlainTextAsync(ChannelIds.DateRangeTestCases);
+
+        // Assert
+        document.Should().ContainAll(
+            "Tyrrrz#5447",
+            "Hello world",
+            "Goodbye world",
+            "Foo bar",
+            "Hurdle Durdle",
+            "One",
+            "Two",
+            "Three",
+            "Yeet"
+        );
     }
 }

DiscordChatExporter.Cli.Tests/Specs/SelfContainedSpecs.cs

@@ -11,39 +11,42 @@ using DiscordChatExporter.Core.Exporting;
 using FluentAssertions;
 using Xunit;
 
-namespace DiscordChatExporter.Cli.Tests.Specs
+namespace DiscordChatExporter.Cli.Tests.Specs;
+
+public class SelfContainedSpecs : IClassFixture<TempOutputFixture>
 {
-    public record SelfContainedSpecs(TempOutputFixture TempOutput) : IClassFixture<TempOutputFixture>
+    private readonly TempOutputFixture _tempOutput;
+
+    public SelfContainedSpecs(TempOutputFixture tempOutput)
     {
-        [Fact]
-        public async Task Messages_in_self_contained_export_only_reference_local_file_resources()
+        _tempOutput = tempOutput;
+    }
+
+    [Fact]
+    public async Task Messages_in_self_contained_export_only_reference_local_file_resources()
+    {
+        // Arrange
+        var filePath = _tempOutput.GetTempFilePath();
+        var dirPath = Path.GetDirectoryName(filePath) ?? Directory.GetCurrentDirectory();
+
+        // Act
+        await new ExportChannelsCommand
         {
-            // Arrange
-            var filePath = TempOutput.GetTempFilePath();
-            var dirPath = Path.GetDirectoryName(filePath) ?? Directory.GetCurrentDirectory();
+            Token = Secrets.DiscordToken,
+            ChannelIds = new[] { ChannelIds.SelfContainedTestCases },
+            ExportFormat = ExportFormat.HtmlDark,
+            OutputPath = filePath,
+            ShouldDownloadMedia = true
+        }.ExecuteAsync(new FakeConsole());
 
-            // Act
-            await new ExportChannelsCommand
-            {
-                TokenValue = Secrets.DiscordToken,
-                IsBotToken = Secrets.IsDiscordTokenBot,
-                ChannelIds = new[] { ChannelIds.SelfContainedTestCases },
-                ExportFormat = ExportFormat.HtmlDark,
-                OutputPath = filePath,
-                ShouldDownloadMedia = true
-            }.ExecuteAsync(new FakeConsole());
-
-            var data = await File.ReadAllTextAsync(filePath);
-            var document = Html.Parse(data);
-
-            // Assert
-            document
-                .QuerySelectorAll("body [src]")
-                .Select(e => e.GetAttribute("src")!)
-                .Select(f => Path.GetFullPath(f, dirPath))
-                .All(File.Exists)
-                .Should()
-                .BeTrue();
-        }
+        // Assert
+        Html
+            .Parse(await File.ReadAllTextAsync(filePath))
+            .QuerySelectorAll("body [src]")
+            .Select(e => e.GetAttribute("src")!)
+            .Select(f => Path.GetFullPath(f, dirPath))
+            .All(File.Exists)
+            .Should()
+            .BeTrue();
     }
 }

DiscordChatExporter.Cli.Tests/TestData/ChannelIds.cs

@@ -1,21 +1,24 @@
 using DiscordChatExporter.Core.Discord;
 
-namespace DiscordChatExporter.Cli.Tests.TestData
+namespace DiscordChatExporter.Cli.Tests.TestData;
+
+public static class ChannelIds
 {
-    public static class ChannelIds
-    {
-        public static Snowflake AttachmentTestCases { get; } = Snowflake.Parse("885587741654536192");
+    public static Snowflake AttachmentTestCases { get; } = Snowflake.Parse("885587741654536192");
 
-        public static Snowflake DateRangeTestCases { get; } = Snowflake.Parse("866674248747319326");
+    public static Snowflake DateRangeTestCases { get; } = Snowflake.Parse("866674248747319326");
 
-        public static Snowflake EmbedTestCases { get; } = Snowflake.Parse("866472452459462687");
+    public static Snowflake EmbedTestCases { get; } = Snowflake.Parse("866472452459462687");
 
-        public static Snowflake FilterTestCases { get; } = Snowflake.Parse("866744075033641020");
+    public static Snowflake GroupingTestCases { get; } = Snowflake.Parse("992092091545034842");
 
-        public static Snowflake MentionTestCases { get; } = Snowflake.Parse("866458801389174794");
+    public static Snowflake FilterTestCases { get; } = Snowflake.Parse("866744075033641020");
 
-        public static Snowflake ReplyTestCases { get; } = Snowflake.Parse("866459871934677052");
+    public static Snowflake MentionTestCases { get; } = Snowflake.Parse("866458801389174794");
 
-        public static Snowflake SelfContainedTestCases { get; } = Snowflake.Parse("887441432678379560");
-    }
+    public static Snowflake ReplyTestCases { get; } = Snowflake.Parse("866459871934677052");
+
+    public static Snowflake SelfContainedTestCases { get; } = Snowflake.Parse("887441432678379560");
+
+    public static Snowflake StickerTestCases { get; } = Snowflake.Parse("939668868253769729");
 }

DiscordChatExporter.Cli.Tests/Utils/DirectoryEx.cs

@@ -1,24 +1,23 @@
 using System.IO;
 
-namespace DiscordChatExporter.Cli.Tests.Utils
-{
-    internal static class DirectoryEx
-    {
-        public static void DeleteIfExists(string dirPath, bool recursive = true)
-        {
-            try
-            {
-                Directory.Delete(dirPath, recursive);
-            }
-            catch (DirectoryNotFoundException)
-            {
-            }
-        }
+namespace DiscordChatExporter.Cli.Tests.Utils;
 
-        public static void Reset(string dirPath)
+internal static class DirectoryEx
+{
+    public static void DeleteIfExists(string dirPath, bool recursive = true)
+    {
+        try
+        {
+            Directory.Delete(dirPath, recursive);
+        }
+        catch (DirectoryNotFoundException)
         {
-            DeleteIfExists(dirPath);
-            Directory.CreateDirectory(dirPath);
         }
     }
+
+    public static void Reset(string dirPath)
+    {
+        DeleteIfExists(dirPath);
+        Directory.CreateDirectory(dirPath);
+    }
 }

DiscordChatExporter.Cli.Tests/Utils/Html.cs

@@ -1,12 +1,11 @@
 using AngleSharp.Html.Dom;
 using AngleSharp.Html.Parser;
 
-namespace DiscordChatExporter.Cli.Tests.Utils
-{
-    internal static class Html
-    {
-        private static readonly IHtmlParser Parser = new HtmlParser();
+namespace DiscordChatExporter.Cli.Tests.Utils;
 
-        public static IHtmlDocument Parse(string source) => Parser.ParseDocument(source);
-    }
+internal static class Html
+{
+    private static readonly IHtmlParser Parser = new HtmlParser();
+
+    public static IHtmlDocument Parse(string source) => Parser.ParseDocument(source);
 }

DiscordChatExporter.Cli.dockerfile

@@ -0,0 +1,18 @@
+# Build
+FROM mcr.microsoft.com/dotnet/sdk:6.0 AS build
+
+COPY favicon.ico ./
+COPY NuGet.config ./
+COPY Directory.Build.props ./
+COPY DiscordChatExporter.Core ./DiscordChatExporter.Core
+COPY DiscordChatExporter.Cli ./DiscordChatExporter.Cli
+
+RUN dotnet publish DiscordChatExporter.Cli -c Release -o ./publish
+
+# Run
+FROM mcr.microsoft.com/dotnet/runtime:6.0 AS run
+
+COPY --from=build ./publish ./
+
+WORKDIR ./out
+ENTRYPOINT ["dotnet", "/DiscordChatExporter.Cli.dll"]

DiscordChatExporter.Cli/Commands/Base/ExportCommandBase.cs

@@ -14,143 +14,201 @@ using DiscordChatExporter.Core.Exceptions;
 using DiscordChatExporter.Core.Exporting;
 using DiscordChatExporter.Core.Exporting.Filtering;
 using DiscordChatExporter.Core.Exporting.Partitioning;
-using DiscordChatExporter.Core.Utils.Extensions;
+using Gress;
 
-namespace DiscordChatExporter.Cli.Commands.Base
+namespace DiscordChatExporter.Cli.Commands.Base;
+
+public abstract class ExportCommandBase : TokenCommandBase
 {
-    public abstract class ExportCommandBase : TokenCommandBase
+    [CommandOption(
+        "output",
+        'o',
+        Description = "Output file or directory path."
+    )]
+    public string OutputPath { get; init; } = Directory.GetCurrentDirectory();
+
+    [CommandOption(
+        "format",
+        'f',
+        Description = "Export format."
+    )]
+    public ExportFormat ExportFormat { get; init; } = ExportFormat.HtmlDark;
+
+    [CommandOption(
+        "after",
+        Description = "Only include messages sent after this date or message ID."
+    )]
+    public Snowflake? After { get; init; }
+
+    [CommandOption(
+        "before",
+        Description = "Only include messages sent before this date or message ID."
+    )]
+    public Snowflake? Before { get; init; }
+
+    [CommandOption(
+        "partition",
+        'p',
+        Description = "Split output into partitions, each limited to this number of messages (e.g. '100') or file size (e.g. '10mb')."
+    )]
+    public PartitionLimit PartitionLimit { get; init; } = PartitionLimit.Null;
+
+    [CommandOption(
+        "filter",
+        Description = "Only include messages that satisfy this filter (e.g. 'from:foo#1234' or 'has:image')."
+    )]
+    public MessageFilter MessageFilter { get; init; } = MessageFilter.Null;
+
+    [CommandOption(
+        "parallel",
+        Description = "Limits how many channels can be exported in parallel."
+    )]
+    public int ParallelLimit { get; init; } = 1;
+
+    [CommandOption(
+        "media",
+        Description = "Download referenced media content."
+    )]
+    public bool ShouldDownloadMedia { get; init; }
+
+    [CommandOption(
+        "reuse-media",
+        Description = "Reuse already existing media content to skip redundant downloads."
+    )]
+    public bool ShouldReuseMedia { get; init; }
+
+    [CommandOption(
+        "dateformat",
+        Description = "Format used when writing dates."
+    )]
+    public string DateFormat { get; init; } = "dd-MMM-yy hh:mm tt";
+
+    private ChannelExporter? _channelExporter;
+    protected ChannelExporter Exporter => _channelExporter ??= new ChannelExporter(Discord);
+
+    protected async ValueTask ExecuteAsync(IConsole console, IReadOnlyList<Channel> channels)
     {
-        [CommandOption("output", 'o', Description = "Output file or directory path.")]
-        public string OutputPath { get; init; } = Directory.GetCurrentDirectory();
+        var cancellationToken = console.RegisterCancellationHandler();
 
-        [CommandOption("format", 'f', Description = "Export format.")]
-        public ExportFormat ExportFormat { get; init; } = ExportFormat.HtmlDark;
-
-        [CommandOption("after", Description = "Only include messages sent after this date or message ID.")]
-        public Snowflake? After { get; init; }
-
-        [CommandOption("before", Description = "Only include messages sent before this date or message ID.")]
-        public Snowflake? Before { get; init; }
-
-        [CommandOption("partition", 'p', Description = "Split output into partitions, each limited to this number of messages (e.g. '100') or file size (e.g. '10mb').")]
-        public PartitionLimit PartitionLimit { get; init; } = PartitionLimit.Null;
-
-        [CommandOption("filter", Description = "Only include messages that satisfy this filter (e.g. 'from:foo#1234' or 'has:image').")]
-        public MessageFilter MessageFilter { get; init; } = MessageFilter.Null;
-
-        [CommandOption("parallel", Description = "Limits how many channels can be exported in parallel.")]
-        public int ParallelLimit { get; init; } = 1;
-
-        [CommandOption("media", Description = "Download referenced media content.")]
-        public bool ShouldDownloadMedia { get; init; }
-
-        [CommandOption("reuse-media", Description = "Reuse already existing media content to skip redundant downloads.")]
-        public bool ShouldReuseMedia { get; init; }
-
-        [CommandOption("dateformat", Description = "Format used when writing dates.")]
-        public string DateFormat { get; init; } = "dd-MMM-yy hh:mm tt";
-
-        private ChannelExporter? _channelExporter;
-        protected ChannelExporter Exporter => _channelExporter ??= new ChannelExporter(Discord);
-
-        protected async ValueTask ExecuteAsync(IConsole console, IReadOnlyList<Channel> channels)
+        if (ShouldReuseMedia && !ShouldDownloadMedia)
         {
-            var cancellationToken = console.RegisterCancellationHandler();
+            throw new CommandException("Option --reuse-media cannot be used without --media.");
+        }
 
-            if (ShouldReuseMedia && !ShouldDownloadMedia)
-            {
-                throw new CommandException("Option --reuse-media cannot be used without --media.");
-            }
+        var errors = new ConcurrentDictionary<Channel, string>();
 
-            var errors = new ConcurrentDictionary<Channel, string>();
-
-            // Export
-            await console.Output.WriteLineAsync($"Exporting {channels.Count} channel(s)...");
-            await console.CreateProgressTicker().StartAsync(async progressContext =>
-            {
-                await channels.ParallelForEachAsync(async channel =>
+        // Export
+        await console.Output.WriteLineAsync($"Exporting {channels.Count} channel(s)...");
+        await console.CreateProgressTicker().StartAsync(async progressContext =>
+        {
+            await Parallel.ForEachAsync(
+                channels,
+                new ParallelOptions
+                {
+                    MaxDegreeOfParallelism = Math.Max(1, ParallelLimit),
+                    CancellationToken = cancellationToken
+                },
+                async (channel, innerCancellationToken) =>
                 {
                     try
                     {
-                        await progressContext.StartTaskAsync($"{channel.Category.Name} / {channel.Name}", async progress =>
-                        {
-                            var guild = await Discord.GetGuildAsync(channel.GuildId, cancellationToken);
+                        await progressContext.StartTaskAsync($"{channel.Category.Name} / {channel.Name}",
+                            async progress =>
+                            {
+                                var guild = await Discord.GetGuildAsync(channel.GuildId, innerCancellationToken);
 
-                            var request = new ExportRequest(
-                                guild,
-                                channel,
-                                OutputPath,
-                                ExportFormat,
-                                After,
-                                Before,
-                                PartitionLimit,
-                                MessageFilter,
-                                ShouldDownloadMedia,
-                                ShouldReuseMedia,
-                                DateFormat
-                            );
+                                var request = new ExportRequest(
+                                    guild,
+                                    channel,
+                                    OutputPath,
+                                    ExportFormat,
+                                    After,
+                                    Before,
+                                    PartitionLimit,
+                                    MessageFilter,
+                                    ShouldDownloadMedia,
+                                    ShouldReuseMedia,
+                                    DateFormat
+                                );
 
-                            await Exporter.ExportChannelAsync(request, progress, cancellationToken);
-                        });
+                                await Exporter.ExportChannelAsync(
+                                    request,
+                                    progress.ToPercentageBased(),
+                                    innerCancellationToken
+                                );
+                            }
+                        );
                     }
                     catch (DiscordChatExporterException ex) when (!ex.IsFatal)
                     {
                         errors[channel] = ex.Message;
                     }
-                }, Math.Max(ParallelLimit, 1), cancellationToken);
-            });
+                }
+            );
+        });
 
-            // Print result
-            using (console.WithForegroundColor(ConsoleColor.White))
+        // Print result
+        using (console.WithForegroundColor(ConsoleColor.White))
+        {
+            await console.Output.WriteLineAsync(
+                $"Successfully exported {channels.Count - errors.Count} channel(s)."
+            );
+        }
+
+        // Print errors
+        if (errors.Any())
+        {
+            await console.Output.WriteLineAsync();
+
+            using (console.WithForegroundColor(ConsoleColor.Red))
             {
                 await console.Output.WriteLineAsync(
-                    $"Successfully exported {channels.Count - errors.Count} channel(s)."
+                    $"Failed to export {errors.Count} channel(s):"
                 );
             }
 
-            // Print errors
-            if (errors.Any())
+            foreach (var (channel, error) in errors)
             {
-                await console.Output.WriteLineAsync();
+                await console.Output.WriteAsync($"{channel.Category.Name} / {channel.Name}: ");
 
                 using (console.WithForegroundColor(ConsoleColor.Red))
-                {
-                    await console.Output.WriteLineAsync(
-                        $"Failed to export {errors.Count} channel(s):"
-                    );
-                }
-
-                foreach (var (channel, error) in errors)
-                {
-                    await console.Output.WriteAsync($"{channel.Category.Name} / {channel.Name}: ");
-
-                    using (console.WithForegroundColor(ConsoleColor.Red))
-                        await console.Output.WriteLineAsync(error);
-                }
-
-                await console.Output.WriteLineAsync();
+                    await console.Output.WriteLineAsync(error);
             }
 
-            // Fail the command only if ALL channels failed to export.
-            // Having some of the channels fail to export is expected.
-            if (errors.Count >= channels.Count)
-            {
-                throw new CommandException("Export failed.");
-            }
+            await console.Output.WriteLineAsync();
         }
 
-        protected async ValueTask ExecuteAsync(IConsole console, IReadOnlyList<Snowflake> channelIds)
+        // Fail the command only if ALL channels failed to export.
+        // Having some of the channels fail to export is expected.
+        if (errors.Count >= channels.Count)
         {
-            var cancellationToken = console.RegisterCancellationHandler();
-            var channels = new List<Channel>();
-
-            foreach (var channelId in channelIds)
-            {
-                var channel = await Discord.GetChannelAsync(channelId, cancellationToken);
-                channels.Add(channel);
-            }
-
-            await ExecuteAsync(console, channels);
+            throw new CommandException("Export failed.");
         }
     }
+
+    protected async ValueTask ExecuteAsync(IConsole console, IReadOnlyList<Snowflake> channelIds)
+    {
+        var cancellationToken = console.RegisterCancellationHandler();
+        var channels = new List<Channel>();
+
+        foreach (var channelId in channelIds)
+        {
+            var channel = await Discord.GetChannelAsync(channelId, cancellationToken);
+            channels.Add(channel);
+        }
+
+        await ExecuteAsync(console, channels);
+    }
+
+    public override ValueTask ExecuteAsync(IConsole console)
+    {
+        // War in Ukraine message
+        console.Output.WriteLine("========================================================================");
+        console.Output.WriteLine("||   Ukraine is at war! Support my country in its fight for freedom~  ||");
+        console.Output.WriteLine("||   Learn more on my website: https://tyrrrz.me                      ||");
+        console.Output.WriteLine("========================================================================");
+        console.Output.WriteLine("");
+
+        return default;
+    }
 }

DiscordChatExporter.Cli/Commands/Base/TokenCommandBase.cs

@@ -1,30 +1,34 @@
-using System.Threading.Tasks;
+using System;
+using System.Threading.Tasks;
 using CliFx;
 using CliFx.Attributes;
 using CliFx.Infrastructure;
 using DiscordChatExporter.Core.Discord;
 
-namespace DiscordChatExporter.Cli.Commands.Base
+namespace DiscordChatExporter.Cli.Commands.Base;
+
+public abstract class TokenCommandBase : ICommand
 {
-    public abstract class TokenCommandBase : ICommand
-    {
-        [CommandOption("token", 't', IsRequired = true, EnvironmentVariable = "DISCORD_TOKEN", Description = "Authentication token.")]
-        public string TokenValue { get; init; } = "";
+    [CommandOption(
+        "token",
+        't',
+        IsRequired = true,
+        EnvironmentVariable = "DISCORD_TOKEN",
+        Description = "Authentication token."
+    )]
+    public string Token { get; init; } = "";
 
-        [CommandOption("bot", 'b', EnvironmentVariable = "DISCORD_TOKEN_BOT", Description = "Authenticate as a bot.")]
-        public bool IsBotToken { get; init; }
+    [Obsolete("This option doesn't do anything. Kept for backwards compatibility.")]
+    [CommandOption(
+        "bot",
+        'b',
+        EnvironmentVariable = "DISCORD_TOKEN_BOT",
+        Description = "This option doesn't do anything. Kept for backwards compatibility."
+    )]
+    public bool IsBotToken { get; init; }
 
-        private AuthToken? _authToken;
-        private AuthToken AuthToken => _authToken ??= new AuthToken(
-            IsBotToken
-                ? AuthTokenKind.Bot
-                : AuthTokenKind.User,
-            TokenValue
-        );
+    private DiscordClient? _discordClient;
+    protected DiscordClient Discord => _discordClient ??= new DiscordClient(Token);
 
-        private DiscordClient? _discordClient;
-        protected DiscordClient Discord => _discordClient ??= new DiscordClient(AuthToken);
-
-        public abstract ValueTask ExecuteAsync(IConsole console);
-    }
+    public abstract ValueTask ExecuteAsync(IConsole console);
 }

DiscordChatExporter.Cli/Commands/ExportAllCommand.cs

@@ -5,37 +5,35 @@ using CliFx.Infrastructure;
 using DiscordChatExporter.Cli.Commands.Base;
 using DiscordChatExporter.Core.Discord.Data;
 
-namespace DiscordChatExporter.Cli.Commands
+namespace DiscordChatExporter.Cli.Commands;
+
+[Command("exportall", Description = "Export all accessible channels.")]
+public class ExportAllCommand : ExportCommandBase
 {
-    [Command("exportall", Description = "Export all accessible channels.")]
-    public class ExportAllCommand : ExportCommandBase
+    [CommandOption(
+        "include-dm",
+        Description = "Include direct message channels."
+    )]
+    public bool IncludeDirectMessages { get; init; } = true;
+
+    public override async ValueTask ExecuteAsync(IConsole console)
     {
-        [CommandOption("include-dm", Description = "Include direct message channels.")]
-        public bool IncludeDirectMessages { get; init; } = true;
+        await base.ExecuteAsync(console);
 
-        public override async ValueTask ExecuteAsync(IConsole console)
+        var cancellationToken = console.RegisterCancellationHandler();
+        var channels = new List<Channel>();
+
+        await console.Output.WriteLineAsync("Fetching channels...");
+        await foreach (var guild in Discord.GetUserGuildsAsync(cancellationToken))
         {
-            var cancellationToken = console.RegisterCancellationHandler();
-            var channels = new List<Channel>();
+            // Skip DMs if instructed to
+            if (!IncludeDirectMessages && guild.Id == Guild.DirectMessages.Id)
+                continue;
 
-            await console.Output.WriteLineAsync("Fetching channels...");
-            await foreach (var guild in Discord.GetUserGuildsAsync(cancellationToken))
-            {
-                // Skip DMs if instructed to
-                if (!IncludeDirectMessages && guild.Id == Guild.DirectMessages.Id)
-                    continue;
-
-                await foreach (var channel in Discord.GetGuildChannelsAsync(guild.Id, cancellationToken))
-                {
-                    // Skip non-text channels
-                    if (!channel.IsTextChannel)
-                        continue;
-
-                    channels.Add(channel);
-                }
-            }
-
-            await base.ExecuteAsync(console, channels);
+            await foreach (var channel in Discord.GetGuildChannelsAsync(guild.Id, cancellationToken))
+                channels.Add(channel);
         }
+
+        await base.ExecuteAsync(console, channels);
     }
 }

DiscordChatExporter.Cli/Commands/ExportChannelsCommand.cs

@@ -6,16 +6,23 @@ using CliFx.Infrastructure;
 using DiscordChatExporter.Cli.Commands.Base;
 using DiscordChatExporter.Core.Discord;
 
-namespace DiscordChatExporter.Cli.Commands
-{
-    [Command("export", Description = "Export one or multiple channels.")]
-    public class ExportChannelsCommand : ExportCommandBase
-    {
-        // TODO: change this to plural (breaking change)
-        [CommandOption("channel", 'c', IsRequired = true, Description = "Channel ID(s).")]
-        public IReadOnlyList<Snowflake> ChannelIds { get; init; } = Array.Empty<Snowflake>();
+namespace DiscordChatExporter.Cli.Commands;
 
-        public override async ValueTask ExecuteAsync(IConsole console) =>
-            await base.ExecuteAsync(console, ChannelIds);
+[Command("export", Description = "Export one or multiple channels.")]
+public class ExportChannelsCommand : ExportCommandBase
+{
+    // TODO: change this to plural (breaking change)
+    [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)
+    {
+        await base.ExecuteAsync(console);
+        await base.ExecuteAsync(console, ChannelIds);
     }
 }

DiscordChatExporter.Cli/Commands/ExportDirectMessagesCommand.cs

@@ -1,25 +1,24 @@
-using System.Linq;
-using System.Threading.Tasks;
+using System.Threading.Tasks;
 using CliFx.Attributes;
 using CliFx.Infrastructure;
 using DiscordChatExporter.Cli.Commands.Base;
 using DiscordChatExporter.Core.Discord.Data;
 using DiscordChatExporter.Core.Utils.Extensions;
 
-namespace DiscordChatExporter.Cli.Commands
+namespace DiscordChatExporter.Cli.Commands;
+
+[Command("exportdm", Description = "Export all direct message channels.")]
+public class ExportDirectMessagesCommand : ExportCommandBase
 {
-    [Command("exportdm", Description = "Export all direct message channels.")]
-    public class ExportDirectMessagesCommand : ExportCommandBase
+    public override async ValueTask ExecuteAsync(IConsole console)
     {
-        public override async ValueTask ExecuteAsync(IConsole console)
-        {
-            var cancellationToken = console.RegisterCancellationHandler();
+        await base.ExecuteAsync(console);
 
-            await console.Output.WriteLineAsync("Fetching channels...");
-            var channels = await Discord.GetGuildChannelsAsync(Guild.DirectMessages.Id, cancellationToken);
-            var textChannels = channels.Where(c => c.IsTextChannel).ToArray();
+        var cancellationToken = console.RegisterCancellationHandler();
 
-            await base.ExecuteAsync(console, textChannels);
-        }
+        await console.Output.WriteLineAsync("Fetching channels...");
+        var channels = await Discord.GetGuildChannelsAsync(Guild.DirectMessages.Id, cancellationToken);
+
+        await base.ExecuteAsync(console, channels);
     }
 }

DiscordChatExporter.Cli/Commands/ExportGuildCommand.cs

@@ -1,28 +1,32 @@
-using System.Linq;
-using System.Threading.Tasks;
+using System.Threading.Tasks;
 using CliFx.Attributes;
 using CliFx.Infrastructure;
 using DiscordChatExporter.Cli.Commands.Base;
 using DiscordChatExporter.Core.Discord;
 using DiscordChatExporter.Core.Utils.Extensions;
 
-namespace DiscordChatExporter.Cli.Commands
+namespace DiscordChatExporter.Cli.Commands;
+
+[Command("exportguild", Description = "Export all channels within specified guild.")]
+public class ExportGuildCommand : ExportCommandBase
 {
-    [Command("exportguild", Description = "Export all channels within specified guild.")]
-    public class ExportGuildCommand : ExportCommandBase
+    [CommandOption(
+        "guild",
+        'g',
+        IsRequired = true,
+        Description = "Guild ID."
+    )]
+    public Snowflake GuildId { get; init; }
+
+    public override async ValueTask ExecuteAsync(IConsole console)
     {
-        [CommandOption("guild", 'g', IsRequired = true, Description = "Guild ID.")]
-        public Snowflake GuildId { get; init; }
+        await base.ExecuteAsync(console);
 
-        public override async ValueTask ExecuteAsync(IConsole console)
-        {
-            var cancellationToken = console.RegisterCancellationHandler();
+        var cancellationToken = console.RegisterCancellationHandler();
 
-            await console.Output.WriteLineAsync("Fetching channels...");
-            var channels = await Discord.GetGuildChannelsAsync(GuildId, cancellationToken);
-            var textChannels = channels.Where(c => c.IsTextChannel).ToArray();
+        await console.Output.WriteLineAsync("Fetching channels...");
+        var channels = await Discord.GetGuildChannelsAsync(GuildId, cancellationToken);
 
-            await base.ExecuteAsync(console, textChannels);
-        }
+        await base.ExecuteAsync(console, channels);
     }
 }

DiscordChatExporter.Cli/Commands/GetChannelsCommand.cs

@@ -7,39 +7,42 @@ using DiscordChatExporter.Cli.Commands.Base;
 using DiscordChatExporter.Core.Discord;
 using DiscordChatExporter.Core.Utils.Extensions;
 
-namespace DiscordChatExporter.Cli.Commands
+namespace DiscordChatExporter.Cli.Commands;
+
+[Command("channels", Description = "Get the list of channels in a guild.")]
+public class GetChannelsCommand : TokenCommandBase
 {
-    [Command("channels", Description = "Get the list of channels in a guild.")]
-    public class GetChannelsCommand : TokenCommandBase
+    [CommandOption(
+        "guild",
+        'g',
+        IsRequired = true,
+        Description = "Guild ID."
+    )]
+    public Snowflake GuildId { get; init; }
+
+    public override async ValueTask ExecuteAsync(IConsole console)
     {
-        [CommandOption("guild", 'g', IsRequired = true, Description = "Guild ID.")]
-        public Snowflake GuildId { get; init; }
+        var cancellationToken = console.RegisterCancellationHandler();
 
-        public override async ValueTask ExecuteAsync(IConsole console)
+        var channels = (await Discord.GetGuildChannelsAsync(GuildId, cancellationToken))
+            .OrderBy(c => c.Category.Position)
+            .ThenBy(c => c.Name)
+            .ToArray();
+
+        foreach (var channel in channels)
         {
-            var cancellationToken = console.RegisterCancellationHandler();
+            // Channel ID
+            await console.Output.WriteAsync(
+                channel.Id.ToString().PadRight(18, ' ')
+            );
 
-            var channels = await Discord.GetGuildChannelsAsync(GuildId, cancellationToken);
+            // Separator
+            using (console.WithForegroundColor(ConsoleColor.DarkGray))
+                await console.Output.WriteAsync(" | ");
 
-            var textChannels = channels
-                .Where(c => c.IsTextChannel)
-                .OrderBy(c => c.Category.Position)
-                .ThenBy(c => c.Name)
-                .ToArray();
-
-            foreach (var channel in textChannels)
-            {
-                // Channel ID
-                await console.Output.WriteAsync(channel.Id.ToString());
-
-                // Separator
-                using (console.WithForegroundColor(ConsoleColor.DarkGray))
-                    await console.Output.WriteAsync(" | ");
-
-                // Channel category / name
-                using (console.WithForegroundColor(ConsoleColor.White))
-                    await console.Output.WriteLineAsync($"{channel.Category.Name} / {channel.Name}");
-            }
+            // Channel category / name
+            using (console.WithForegroundColor(ConsoleColor.White))
+                await console.Output.WriteLineAsync($"{channel.Category.Name} / {channel.Name}");
         }
     }
 }

DiscordChatExporter.Cli/Commands/GetDirectMessageChannelsCommand.cs

@@ -7,36 +7,34 @@ using DiscordChatExporter.Cli.Commands.Base;
 using DiscordChatExporter.Core.Discord.Data;
 using DiscordChatExporter.Core.Utils.Extensions;
 
-namespace DiscordChatExporter.Cli.Commands
+namespace DiscordChatExporter.Cli.Commands;
+
+[Command("dm", Description = "Get the list of direct message channels.")]
+public class GetDirectMessageChannelsCommand : TokenCommandBase
 {
-    [Command("dm", Description = "Get the list of direct message channels.")]
-    public class GetDirectMessageChannelsCommand : TokenCommandBase
+    public override async ValueTask ExecuteAsync(IConsole console)
     {
-        public override async ValueTask ExecuteAsync(IConsole console)
+        var cancellationToken = console.RegisterCancellationHandler();
+
+        var channels = (await Discord.GetGuildChannelsAsync(Guild.DirectMessages.Id, cancellationToken))
+            .OrderByDescending(c => c.LastMessageId)
+            .ThenBy(c => c.Name)
+            .ToArray();
+
+        foreach (var channel in channels)
         {
-            var cancellationToken = console.RegisterCancellationHandler();
+            // Channel ID
+            await console.Output.WriteAsync(
+                channel.Id.ToString().PadRight(18, ' ')
+            );
 
-            var channels = await Discord.GetGuildChannelsAsync(Guild.DirectMessages.Id, cancellationToken);
+            // Separator
+            using (console.WithForegroundColor(ConsoleColor.DarkGray))
+                await console.Output.WriteAsync(" | ");
 
-            var textChannels = channels
-                .Where(c => c.IsTextChannel)
-                .OrderBy(c => c.Category.Position)
-                .ThenBy(c => c.Name)
-                .ToArray();
-
-            foreach (var channel in textChannels)
-            {
-                // Channel ID
-                await console.Output.WriteAsync(channel.Id.ToString());
-
-                // Separator
-                using (console.WithForegroundColor(ConsoleColor.DarkGray))
-                    await console.Output.WriteAsync(" | ");
-
-                // Channel category / name
-                using (console.WithForegroundColor(ConsoleColor.White))
-                    await console.Output.WriteLineAsync($"{channel.Category.Name} / {channel.Name}");
-            }
+            // Channel category / name
+            using (console.WithForegroundColor(ConsoleColor.White))
+                await console.Output.WriteLineAsync($"{channel.Category.Name} / {channel.Name}");
         }
     }
 }

DiscordChatExporter.Cli/Commands/GetGuildsCommand.cs

@@ -4,32 +4,37 @@ using System.Threading.Tasks;
 using CliFx.Attributes;
 using CliFx.Infrastructure;
 using DiscordChatExporter.Cli.Commands.Base;
+using DiscordChatExporter.Core.Discord.Data;
 using DiscordChatExporter.Core.Utils.Extensions;
 
-namespace DiscordChatExporter.Cli.Commands
+namespace DiscordChatExporter.Cli.Commands;
+
+[Command("guilds", Description = "Get the list of accessible guilds.")]
+public class GetGuildsCommand : TokenCommandBase
 {
-    [Command("guilds", Description = "Get the list of accessible guilds.")]
-    public class GetGuildsCommand : TokenCommandBase
+    public override async ValueTask ExecuteAsync(IConsole console)
     {
-        public override async ValueTask ExecuteAsync(IConsole console)
+        var cancellationToken = console.RegisterCancellationHandler();
+
+        var guilds = (await Discord.GetUserGuildsAsync(cancellationToken))
+            // Show direct messages first
+            .OrderByDescending(g => g.Id == Guild.DirectMessages.Id)
+            .ThenBy(g => g.Name);
+
+        foreach (var guild in guilds)
         {
-            var cancellationToken = console.RegisterCancellationHandler();
+            // Guild ID
+            await console.Output.WriteAsync(
+                guild.Id.ToString().PadRight(18, ' ')
+            );
 
-            var guilds = await Discord.GetUserGuildsAsync(cancellationToken);
+            // Separator
+            using (console.WithForegroundColor(ConsoleColor.DarkGray))
+                await console.Output.WriteAsync(" | ");
 
-            foreach (var guild in guilds.OrderBy(g => g.Name))
-            {
-                // Guild ID
-                await console.Output.WriteAsync(guild.Id.ToString());
-
-                // Separator
-                using (console.WithForegroundColor(ConsoleColor.DarkGray))
-                    await console.Output.WriteAsync(" | ");
-
-                // Guild name
-                using (console.WithForegroundColor(ConsoleColor.White))
-                    await console.Output.WriteLineAsync(guild.Name);
-            }
+            // Guild name
+            using (console.WithForegroundColor(ConsoleColor.White))
+                await console.Output.WriteLineAsync(guild.Name);
         }
     }
 }

DiscordChatExporter.Cli/Commands/GuideCommand.cs

@@ -4,68 +4,67 @@ using CliFx;
 using CliFx.Attributes;
 using CliFx.Infrastructure;
 
-namespace DiscordChatExporter.Cli.Commands
+namespace DiscordChatExporter.Cli.Commands;
+
+[Command("guide", Description = "Explains how to obtain token, guild or channel ID.")]
+public class GuideCommand : ICommand
 {
-    [Command("guide", Description = "Explains how to obtain token, guild or channel ID.")]
-    public class GuideCommand : ICommand
+    public ValueTask ExecuteAsync(IConsole console)
     {
-        public ValueTask ExecuteAsync(IConsole console)
-        {
-            // User token
-            using (console.WithForegroundColor(ConsoleColor.White))
-                console.Output.WriteLine("To get user token:");
+        // User token
+        using (console.WithForegroundColor(ConsoleColor.White))
+            console.Output.WriteLine("To get user token:");
 
-            console.Output.WriteLine(" 1. Open Discord");
-            console.Output.WriteLine(" 2. Press Ctrl+Shift+I to show developer tools");
-            console.Output.WriteLine(" 3. Press Ctrl+Shift+M to toggle device toolbar");
-            console.Output.WriteLine(" 4. Navigate to the Application tab");
-            console.Output.WriteLine(" 5. On the left, expand Local Storage and select https://discord.com");
-            console.Output.WriteLine(" 6. Type \"token\" into the Filter box");
-            console.Output.WriteLine(" 7. If the token key does not appear, press Ctrl+R to reload");
-            console.Output.WriteLine(" 8. Copy the value of the token key");
-            console.Output.WriteLine(" *  Automating user accounts is technically against TOS, use at your own risk.");
-            console.Output.WriteLine();
+        console.Output.WriteLine(" *  Automating user accounts is technically against TOS — USE AT YOUR OWN RISK!");
+        console.Output.WriteLine(" 1. Open Discord in your web browser and login");
+        console.Output.WriteLine(" 2. Press Ctrl+Shift+I to show developer tools");
+        console.Output.WriteLine(" 3. Navigate to the Network tab");
+        console.Output.WriteLine(" 4. Press Ctrl+R to reload");
+        console.Output.WriteLine(" 5. Search for a request containing \"messages?limit=50\" or similar");
+        console.Output.WriteLine(" 6. Select the Headers tab on the right");
+        console.Output.WriteLine(" 7. Scroll down to the Request Headers section");
+        console.Output.WriteLine(" 8. Copy the value of the \"authorization\" header");
+        console.Output.WriteLine();
 
-            // Bot token
-            using (console.WithForegroundColor(ConsoleColor.White))
-                console.Output.WriteLine("To get bot token:");
+        // Bot token
+        using (console.WithForegroundColor(ConsoleColor.White))
+            console.Output.WriteLine("To get bot token:");
 
-            console.Output.WriteLine(" 1. Go to Discord developer portal");
-            console.Output.WriteLine(" 2. Open your application's settings");
-            console.Output.WriteLine(" 3. Navigate to the Bot section on the left");
-            console.Output.WriteLine(" 4. Under Token click Copy");
-            console.Output.WriteLine();
+        console.Output.WriteLine(" 1. Go to Discord developer portal");
+        console.Output.WriteLine(" 2. Open your application's settings");
+        console.Output.WriteLine(" 3. Navigate to the Bot section on the left");
+        console.Output.WriteLine(" 4. Under Token click Copy");
+        console.Output.WriteLine();
 
-            // Guild or channel ID
-            using (console.WithForegroundColor(ConsoleColor.White))
-                console.Output.WriteLine("To get guild ID or guild channel ID:");
+        // Guild or channel ID
+        using (console.WithForegroundColor(ConsoleColor.White))
+            console.Output.WriteLine("To get guild ID or guild channel ID:");
 
-            console.Output.WriteLine(" 1. Open Discord");
-            console.Output.WriteLine(" 2. Open Settings");
-            console.Output.WriteLine(" 3. Go to Appearance section");
-            console.Output.WriteLine(" 4. Enable Developer Mode");
-            console.Output.WriteLine(" 5. Right click on the desired guild or channel and click Copy ID");
-            console.Output.WriteLine();
+        console.Output.WriteLine(" 1. Open Discord");
+        console.Output.WriteLine(" 2. Open Settings");
+        console.Output.WriteLine(" 3. Go to Advanced section");
+        console.Output.WriteLine(" 4. Enable Developer Mode");
+        console.Output.WriteLine(" 5. Right click on the desired guild or channel and click Copy ID");
+        console.Output.WriteLine();
 
-            // Direct message channel ID
-            using (console.WithForegroundColor(ConsoleColor.White))
-                console.Output.WriteLine("To get direct message channel ID:");
+        // Direct message channel ID
+        using (console.WithForegroundColor(ConsoleColor.White))
+            console.Output.WriteLine("To get direct message channel ID:");
 
-            console.Output.WriteLine(" 1. Open Discord");
-            console.Output.WriteLine(" 2. Open the desired direct message channel");
-            console.Output.WriteLine(" 3. Press Ctrl+Shift+I to show developer tools");
-            console.Output.WriteLine(" 4. Navigate to the Console tab");
-            console.Output.WriteLine(" 5. Type \"window.location.href\" and press Enter");
-            console.Output.WriteLine(" 6. Copy the first long sequence of numbers inside the URL");
-            console.Output.WriteLine();
+        console.Output.WriteLine(" 1. Open Discord");
+        console.Output.WriteLine(" 2. Open the desired direct message channel");
+        console.Output.WriteLine(" 3. Press Ctrl+Shift+I to show developer tools");
+        console.Output.WriteLine(" 4. Navigate to the Console tab");
+        console.Output.WriteLine(" 5. Type \"window.location.href\" and press Enter");
+        console.Output.WriteLine(" 6. Copy the first long sequence of numbers inside the URL");
+        console.Output.WriteLine();
 
-            // Wiki link
-            using (console.WithForegroundColor(ConsoleColor.White))
-                console.Output.WriteLine("For more information, check out the wiki:");
-            using (console.WithForegroundColor(ConsoleColor.DarkCyan))
-                console.Output.WriteLine("https://github.com/Tyrrrz/DiscordChatExporter/wiki");
+        // Wiki link
+        using (console.WithForegroundColor(ConsoleColor.White))
+            console.Output.WriteLine("If you have questions or issues, please refer to the wiki:");
+        using (console.WithForegroundColor(ConsoleColor.DarkCyan))
+            console.Output.WriteLine("https://github.com/Tyrrrz/DiscordChatExporter/wiki");
 
-            return default;
-        }
+        return default;
     }
 }

DiscordChatExporter.Cli/DiscordChatExporter.Cli.csproj

@@ -6,9 +6,10 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="CliFx" Version="2.0.6" />
-    <PackageReference Include="Spectre.Console" Version="0.43.0" />
-    <PackageReference Include="Gress" Version="1.2.0" />
+    <PackageReference Include="CliFx" Version="2.2.5" />
+    <PackageReference Include="Spectre.Console" Version="0.44.0" />
+    <PackageReference Include="Gress" Version="2.0.1" />
+    <PackageReference Include="DotnetRuntimeBootstrapper" Version="2.3.1" PrivateAssets="all" />
   </ItemGroup>
 
   <ItemGroup>

DiscordChatExporter.Cli/Program.cs

@@ -1,14 +1,6 @@
-using System.Threading.Tasks;
-using CliFx;
+using CliFx;
 
-namespace DiscordChatExporter.Cli
-{
-    public static class Program
-    {
-        public static async Task<int> Main(string[] args) =>
-            await new CliApplicationBuilder()
-                .AddCommandsFromThisAssembly()
-                .Build()
-                .RunAsync(args);
-    }
-}
+return await new CliApplicationBuilder()
+    .AddCommandsFromThisAssembly()
+    .Build()
+    .RunAsync(args);

DiscordChatExporter.Cli/Utils/Extensions/ConsoleExtensions.cs

@@ -3,49 +3,48 @@ using System.Threading.Tasks;
 using CliFx.Infrastructure;
 using Spectre.Console;
 
-namespace DiscordChatExporter.Cli.Utils.Extensions
+namespace DiscordChatExporter.Cli.Utils.Extensions;
+
+internal static class ConsoleExtensions
 {
-    internal static class ConsoleExtensions
-    {
-        public static IAnsiConsole CreateAnsiConsole(this IConsole console) =>
-            AnsiConsole.Create(new AnsiConsoleSettings
-            {
-                Ansi = AnsiSupport.Detect,
-                ColorSystem = ColorSystemSupport.Detect,
-                Out = new AnsiConsoleOutput(console.Output)
-            });
-
-        public static Progress CreateProgressTicker(this IConsole console) => console
-            .CreateAnsiConsole()
-            .Progress()
-            .AutoClear(false)
-            .AutoRefresh(true)
-            .HideCompleted(false)
-            .Columns(
-                new TaskDescriptionColumn {Alignment = Justify.Left},
-                new ProgressBarColumn(),
-                new PercentageColumn()
-            );
-
-        public static async ValueTask StartTaskAsync(
-            this ProgressContext progressContext,
-            string description,
-            Func<ProgressTask, ValueTask> performOperationAsync)
+    public static IAnsiConsole CreateAnsiConsole(this IConsole console) =>
+        AnsiConsole.Create(new AnsiConsoleSettings
         {
-            var progressTask = progressContext.AddTask(
-                // Don't recognize random square brackets as style tags
-                Markup.Escape(description),
-                new ProgressTaskSettings {MaxValue = 1}
-            );
+            Ansi = AnsiSupport.Detect,
+            ColorSystem = ColorSystemSupport.Detect,
+            Out = new AnsiConsoleOutput(console.Output)
+        });
 
-            try
-            {
-                await performOperationAsync(progressTask);
-            }
-            finally
-            {
-                progressTask.StopTask();
-            }
+    public static Progress CreateProgressTicker(this IConsole console) => console
+        .CreateAnsiConsole()
+        .Progress()
+        .AutoClear(false)
+        .AutoRefresh(true)
+        .HideCompleted(false)
+        .Columns(
+            new TaskDescriptionColumn {Alignment = Justify.Left},
+            new ProgressBarColumn(),
+            new PercentageColumn()
+        );
+
+    public static async ValueTask StartTaskAsync(
+        this ProgressContext progressContext,
+        string description,
+        Func<ProgressTask, ValueTask> performOperationAsync)
+    {
+        var progressTask = progressContext.AddTask(
+            // Don't recognize random square brackets as style tags
+            Markup.Escape(description),
+            new ProgressTaskSettings {MaxValue = 1}
+        );
+
+        try
+        {
+            await performOperationAsync(progressTask);
+        }
+        finally
+        {
+            progressTask.StopTask();
         }
     }
 }

DiscordChatExporter.Core/Discord/AuthToken.cs

@@ -1,13 +0,0 @@
-using System.Net.Http.Headers;
-
-namespace DiscordChatExporter.Core.Discord
-{
-    public record AuthToken(AuthTokenKind Kind, string Value)
-    {
-        public AuthenticationHeaderValue GetAuthenticationHeader() => Kind switch
-        {
-            AuthTokenKind.Bot => new AuthenticationHeaderValue("Bot", Value),
-            _ => new AuthenticationHeaderValue(Value)
-        };
-    }
-}

DiscordChatExporter.Core/Discord/AuthTokenKind.cs

@@ -1,8 +0,0 @@
-namespace DiscordChatExporter.Core.Discord
-{
-    public enum AuthTokenKind
-    {
-        User,
-        Bot
-    }
-}

DiscordChatExporter.Core/Discord/Data/Attachment.cs

@@ -6,40 +6,41 @@ using DiscordChatExporter.Core.Utils;
 using DiscordChatExporter.Core.Utils.Extensions;
 using JsonExtensions.Reading;
 
-namespace DiscordChatExporter.Core.Discord.Data
+namespace DiscordChatExporter.Core.Discord.Data;
+
+// https://discord.com/developers/docs/resources/channel#attachment-object
+public partial record Attachment(
+    Snowflake Id,
+    string Url,
+    string FileName,
+    string? Description,
+    int? Width,
+    int? Height,
+    FileSize FileSize) : IHasId
 {
-    // https://discord.com/developers/docs/resources/channel#attachment-object
-    public partial record Attachment(
-        Snowflake Id,
-        string Url,
-        string FileName,
-        int? Width,
-        int? Height,
-        FileSize FileSize) : IHasId
+    public string FileExtension => Path.GetExtension(FileName);
+
+    public bool IsImage => FileFormat.IsImage(FileExtension);
+
+    public bool IsVideo => FileFormat.IsVideo(FileExtension);
+
+    public bool IsAudio => FileFormat.IsAudio(FileExtension);
+
+    public bool IsSpoiler => FileName.StartsWith("SPOILER_", StringComparison.Ordinal);
+}
+
+public partial record Attachment
+{
+    public static Attachment Parse(JsonElement json)
     {
-        public string FileExtension => Path.GetExtension(FileName);
+        var id = json.GetProperty("id").GetNonWhiteSpaceString().Pipe(Snowflake.Parse);
+        var url = json.GetProperty("url").GetNonWhiteSpaceString();
+        var fileName = json.GetProperty("filename").GetNonNullString();
+        var description = json.GetPropertyOrNull("description")?.GetNonWhiteSpaceStringOrNull();
+        var width = json.GetPropertyOrNull("width")?.GetInt32OrNull();
+        var height = json.GetPropertyOrNull("height")?.GetInt32OrNull();
+        var fileSize = json.GetProperty("size").GetInt64().Pipe(FileSize.FromBytes);
 
-        public bool IsImage => FileFormat.IsImage(FileExtension);
-
-        public bool IsVideo => FileFormat.IsVideo(FileExtension);
-
-        public bool IsAudio => FileFormat.IsAudio(FileExtension);
-
-        public bool IsSpoiler => FileName.StartsWith("SPOILER_", StringComparison.Ordinal);
-    }
-
-    public partial record Attachment
-    {
-        public static Attachment Parse(JsonElement json)
-        {
-            var id = json.GetProperty("id").GetNonWhiteSpaceString().Pipe(Snowflake.Parse);
-            var url = json.GetProperty("url").GetNonWhiteSpaceString();
-            var width = json.GetPropertyOrNull("width")?.GetInt32();
-            var height = json.GetPropertyOrNull("height")?.GetInt32();
-            var fileName = json.GetProperty("filename").GetNonWhiteSpaceString();
-            var fileSize = json.GetProperty("size").GetInt64().Pipe(FileSize.FromBytes);
-
-            return new Attachment(id, url, fileName, width, height, fileSize);
-        }
+        return new Attachment(id, url, fileName, description, width, height, fileSize);
     }
 }

DiscordChatExporter.Core/Discord/Data/Channel.cs

@@ -4,69 +4,77 @@ using DiscordChatExporter.Core.Discord.Data.Common;
 using DiscordChatExporter.Core.Utils.Extensions;
 using JsonExtensions.Reading;
 
-namespace DiscordChatExporter.Core.Discord.Data
+namespace DiscordChatExporter.Core.Discord.Data;
+
+// https://discord.com/developers/docs/resources/channel#channel-object
+public partial record Channel(
+    Snowflake Id,
+    ChannelKind Kind,
+    Snowflake GuildId,
+    ChannelCategory Category,
+    string Name,
+    int? Position,
+    string? Topic,
+    Snowflake? LastMessageId) : IHasId
 {
-    // https://discord.com/developers/docs/resources/channel#channel-object
-    public partial record Channel(
-        Snowflake Id,
-        ChannelKind Kind,
-        Snowflake GuildId,
-        ChannelCategory Category,
-        string Name,
-        int? Position,
-        string? Topic) : IHasId
-    {
-        public bool IsTextChannel => Kind is
-            ChannelKind.GuildTextChat or
-            ChannelKind.DirectTextChat or
-            ChannelKind.DirectGroupTextChat or
-            ChannelKind.GuildNews or
-            ChannelKind.GuildStore;
+    public bool SupportsVoice => Kind is ChannelKind.GuildVoiceChat or ChannelKind.GuildStageVoice;
+}
 
-        public bool IsVoiceChannel => !IsTextChannel;
-    }
-
-    public partial record Channel
-    {
-        private static ChannelCategory GetFallbackCategory(ChannelKind channelKind) => new(
-            Snowflake.Zero,
-            channelKind switch
-            {
-                ChannelKind.GuildTextChat => "Text",
-                ChannelKind.DirectTextChat => "Private",
-                ChannelKind.DirectGroupTextChat => "Group",
-                ChannelKind.GuildNews => "News",
-                ChannelKind.GuildStore => "Store",
-                _ => "Default"
-            },
-            null
-        );
-
-        public static Channel Parse(JsonElement json, ChannelCategory? category = null, int? position = null)
+public partial record Channel
+{
+    private static ChannelCategory GetFallbackCategory(ChannelKind channelKind) => new(
+        Snowflake.Zero,
+        channelKind switch
         {
-            var id = json.GetProperty("id").GetNonWhiteSpaceString().Pipe(Snowflake.Parse);
-            var guildId = json.GetPropertyOrNull("guild_id")?.GetNonWhiteSpaceString().Pipe(Snowflake.Parse);
-            var topic = json.GetPropertyOrNull("topic")?.GetStringOrNull();
-            var kind = (ChannelKind)json.GetProperty("type").GetInt32();
+            ChannelKind.GuildTextChat => "Text",
+            ChannelKind.DirectTextChat => "Private",
+            ChannelKind.DirectGroupTextChat => "Group",
+            ChannelKind.GuildNews => "News",
+            _ => "Default"
+        },
+        null
+    );
 
-            var name =
-                // Guild channel
-                json.GetPropertyOrNull("name")?.GetStringOrNull() ??
-                // DM channel
-                json.GetPropertyOrNull("recipients")?.EnumerateArray().Select(User.Parse).Select(u => u.Name)
-                    .Pipe(s => string.Join(", ", s)) ??
-                // Fallback
-                id.ToString();
+    public static Channel Parse(JsonElement json, ChannelCategory? category = null, int? positionHint = null)
+    {
+        var id = json.GetProperty("id").GetNonWhiteSpaceString().Pipe(Snowflake.Parse);
+        var kind = (ChannelKind)json.GetProperty("type").GetInt32();
+        var guildId = json.GetPropertyOrNull("guild_id")?.GetNonWhiteSpaceStringOrNull()?.Pipe(Snowflake.Parse);
 
-            return new Channel(
-                id,
-                kind,
-                guildId ?? Guild.DirectMessages.Id,
-                category ?? GetFallbackCategory(kind),
-                name,
-                position ?? json.GetPropertyOrNull("position")?.GetInt32(),
-                topic
-            );
-        }
+        var name =
+            // Guild channel
+            json.GetPropertyOrNull("name")?.GetNonWhiteSpaceStringOrNull() ??
+
+            // DM channel
+            json.GetPropertyOrNull("recipients")?
+                .EnumerateArrayOrNull()?
+                .Select(User.Parse)
+                .Select(u => u.Name)
+                .Pipe(s => string.Join(", ", s)) ??
+
+            // Fallback
+            id.ToString();
+
+        var position =
+            positionHint ??
+            json.GetPropertyOrNull("position")?.GetInt32OrNull();
+
+        var topic = json.GetPropertyOrNull("topic")?.GetStringOrNull();
+
+        var lastMessageId = json
+            .GetPropertyOrNull("last_message_id")?
+            .GetNonWhiteSpaceStringOrNull()?
+            .Pipe(Snowflake.Parse);
+
+        return new Channel(
+            id,
+            kind,
+            guildId ?? Guild.DirectMessages.Id,
+            category ?? GetFallbackCategory(kind),
+            name,
+            position,
+            topic,
+            lastMessageId
+        );
     }
 }

DiscordChatExporter.Core/Discord/Data/ChannelCategory.cs

@@ -3,25 +3,24 @@ using DiscordChatExporter.Core.Discord.Data.Common;
 using DiscordChatExporter.Core.Utils.Extensions;
 using JsonExtensions.Reading;
 
-namespace DiscordChatExporter.Core.Discord.Data
+namespace DiscordChatExporter.Core.Discord.Data;
+
+public record ChannelCategory(Snowflake Id, string Name, int? Position) : IHasId
 {
-    public record ChannelCategory(Snowflake Id, string Name, int? Position) : IHasId
+    public static ChannelCategory Unknown { get; } = new(Snowflake.Zero, "<unknown category>", 0);
+
+    public static ChannelCategory Parse(JsonElement json, int? positionHint = null)
     {
-        public static ChannelCategory Unknown { get; } = new(Snowflake.Zero, "<unknown category>", 0);
+        var id = json.GetProperty("id").GetNonWhiteSpaceString().Pipe(Snowflake.Parse);
 
-        public static ChannelCategory Parse(JsonElement json, int? position = null)
-        {
-            var id = json.GetProperty("id").GetNonWhiteSpaceString().Pipe(Snowflake.Parse);
+        var name =
+            json.GetPropertyOrNull("name")?.GetNonWhiteSpaceStringOrNull() ??
+            id.ToString();
 
-            var name =
-                json.GetPropertyOrNull("name")?.GetStringOrNull() ??
-                id.ToString();
+        var position =
+            positionHint ??
+            json.GetPropertyOrNull("position")?.GetInt32OrNull();
 
-            return new ChannelCategory(
-                id,
-                name,
-                position ?? json.GetPropertyOrNull("position")?.GetInt32()
-            );
-        }
+        return new ChannelCategory(id, name, position);
     }
 }

DiscordChatExporter.Core/Discord/Data/ChannelKind.cs

@@ -1,15 +1,19 @@
-namespace DiscordChatExporter.Core.Discord.Data
+namespace DiscordChatExporter.Core.Discord.Data;
+
+// https://discord.com/developers/docs/resources/channel#channel-object-channel-types
+// Order of enum fields needs to match the order in the docs.
+public enum ChannelKind
 {
-    // https://discord.com/developers/docs/resources/channel#channel-object-channel-types
-    // Order of enum fields needs to match the order in the docs.
-    public enum ChannelKind
-    {
-        GuildTextChat = 0,
-        DirectTextChat,
-        GuildVoiceChat,
-        DirectGroupTextChat,
-        GuildCategory,
-        GuildNews,
-        GuildStore
-    }
+    GuildTextChat = 0,
+    DirectTextChat = 1,
+    GuildVoiceChat = 2,
+    DirectGroupTextChat = 3,
+    GuildCategory = 4,
+    GuildNews = 5,
+    GuildNewsThread = 10,
+    GuildPublicThread = 11,
+    GuildPrivateThread = 12,
+    GuildStageVoice = 13,
+    GuildDirectory = 14,
+    GuildForum = 15
 }

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

@@ -1,49 +1,48 @@
 using System;
 using System.Diagnostics.CodeAnalysis;
 
-namespace DiscordChatExporter.Core.Discord.Data.Common
+namespace DiscordChatExporter.Core.Discord.Data.Common;
+
+// Loosely based on https://github.com/omar/ByteSize (MIT license)
+public readonly partial record struct FileSize(long TotalBytes)
 {
-    // Loosely based on https://github.com/omar/ByteSize (MIT license)
-    public readonly partial record struct FileSize(long TotalBytes)
+    public double TotalKiloBytes => TotalBytes / 1024.0;
+    public double TotalMegaBytes => TotalKiloBytes / 1024.0;
+    public double TotalGigaBytes => TotalMegaBytes / 1024.0;
+
+    private double GetLargestWholeNumberValue()
     {
-        public double TotalKiloBytes => TotalBytes / 1024.0;
-        public double TotalMegaBytes => TotalKiloBytes / 1024.0;
-        public double TotalGigaBytes => TotalMegaBytes / 1024.0;
+        if (Math.Abs(TotalGigaBytes) >= 1)
+            return TotalGigaBytes;
 
-        private double GetLargestWholeNumberValue()
-        {
-            if (Math.Abs(TotalGigaBytes) >= 1)
-                return TotalGigaBytes;
+        if (Math.Abs(TotalMegaBytes) >= 1)
+            return TotalMegaBytes;
 
-            if (Math.Abs(TotalMegaBytes) >= 1)
-                return TotalMegaBytes;
+        if (Math.Abs(TotalKiloBytes) >= 1)
+            return TotalKiloBytes;
 
-            if (Math.Abs(TotalKiloBytes) >= 1)
-                return TotalKiloBytes;
-
-            return TotalBytes;
-        }
-
-        private string GetLargestWholeNumberSymbol()
-        {
-            if (Math.Abs(TotalGigaBytes) >= 1)
-                return "GB";
-
-            if (Math.Abs(TotalMegaBytes) >= 1)
-                return "MB";
-
-            if (Math.Abs(TotalKiloBytes) >= 1)
-                return "KB";
-
-            return "bytes";
-        }
-
-        [ExcludeFromCodeCoverage]
-        public override string ToString() => $"{GetLargestWholeNumberValue():0.##} {GetLargestWholeNumberSymbol()}";
+        return TotalBytes;
     }
 
-    public partial record struct FileSize
+    private string GetLargestWholeNumberSymbol()
     {
-        public static FileSize FromBytes(long bytes) => new(bytes);
+        if (Math.Abs(TotalGigaBytes) >= 1)
+            return "GB";
+
+        if (Math.Abs(TotalMegaBytes) >= 1)
+            return "MB";
+
+        if (Math.Abs(TotalKiloBytes) >= 1)
+            return "KB";
+
+        return "bytes";
     }
+
+    [ExcludeFromCodeCoverage]
+    public override string ToString() => $"{GetLargestWholeNumberValue():0.##} {GetLargestWholeNumberSymbol()}";
+}
+
+public partial record struct FileSize
+{
+    public static FileSize FromBytes(long bytes) => new(bytes);
 }

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

@@ -1,7 +1,6 @@
-namespace DiscordChatExporter.Core.Discord.Data.Common
+namespace DiscordChatExporter.Core.Discord.Data.Common;
+
+public interface IHasId
 {
-    public interface IHasId
-    {
-        Snowflake Id { get; }
-    }
+    Snowflake Id { get; }
 }

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

@@ -1,13 +1,12 @@
 using System.Collections.Generic;
 
-namespace DiscordChatExporter.Core.Discord.Data.Common
+namespace DiscordChatExporter.Core.Discord.Data.Common;
+
+public class IdBasedEqualityComparer : IEqualityComparer<IHasId>
 {
-    public class IdBasedEqualityComparer : IEqualityComparer<IHasId>
-    {
-        public static IdBasedEqualityComparer Instance { get; } = new();
+    public static IdBasedEqualityComparer Instance { get; } = new();
 
-        public bool Equals(IHasId? x, IHasId? y) => x?.Id == y?.Id;
+    public bool Equals(IHasId? x, IHasId? y) => x?.Id == y?.Id;
 
-        public int GetHashCode(IHasId obj) => obj.Id.GetHashCode();
-    }
+    public int GetHashCode(IHasId obj) => obj.Id.GetHashCode();
 }

DiscordChatExporter.Core/Discord/Data/Embeds/Embed.cs

@@ -6,62 +6,72 @@ using System.Text.Json;
 using DiscordChatExporter.Core.Utils.Extensions;
 using JsonExtensions.Reading;
 
-namespace DiscordChatExporter.Core.Discord.Data.Embeds
+namespace DiscordChatExporter.Core.Discord.Data.Embeds;
+
+// https://discord.com/developers/docs/resources/channel#embed-object
+public partial record Embed(
+    string? Title,
+    string? Url,
+    DateTimeOffset? Timestamp,
+    Color? Color,
+    EmbedAuthor? Author,
+    string? Description,
+    IReadOnlyList<EmbedField> Fields,
+    EmbedImage? Thumbnail,
+    IReadOnlyList<EmbedImage> Images,
+    EmbedFooter? Footer)
 {
-    // https://discord.com/developers/docs/resources/channel#embed-object
-    public partial record Embed(
-        string? Title,
-        string? Url,
-        DateTimeOffset? Timestamp,
-        Color? Color,
-        EmbedAuthor? Author,
-        string? Description,
-        IReadOnlyList<EmbedField> Fields,
-        EmbedImage? Thumbnail,
-        EmbedImage? Image,
-        EmbedFooter? Footer)
+    public PlainImageEmbedProjection? TryGetPlainImage() =>
+        PlainImageEmbedProjection.TryResolve(this);
+
+    public SpotifyTrackEmbedProjection? TryGetSpotifyTrack() =>
+        SpotifyTrackEmbedProjection.TryResolve(this);
+
+    public YouTubeVideoEmbedProjection? TryGetYouTubeVideo() =>
+        YouTubeVideoEmbedProjection.TryResolve(this);
+}
+
+public partial record Embed
+{
+    public static Embed Parse(JsonElement json)
     {
-        public PlainImageEmbedProjection? TryGetPlainImage() =>
-            PlainImageEmbedProjection.TryResolve(this);
+        var title = json.GetPropertyOrNull("title")?.GetStringOrNull();
+        var url = json.GetPropertyOrNull("url")?.GetNonWhiteSpaceStringOrNull();
+        var timestamp = json.GetPropertyOrNull("timestamp")?.GetDateTimeOffset();
+        var color = json.GetPropertyOrNull("color")?.GetInt32OrNull()?.Pipe(System.Drawing.Color.FromArgb).ResetAlpha();
+        var author = json.GetPropertyOrNull("author")?.Pipe(EmbedAuthor.Parse);
+        var description = json.GetPropertyOrNull("description")?.GetStringOrNull();
 
-        public SpotifyTrackEmbedProjection? TryGetSpotifyTrack() =>
-            SpotifyTrackEmbedProjection.TryResolve(this);
+        var fields =
+            json.GetPropertyOrNull("fields")?.EnumerateArrayOrNull()?.Select(EmbedField.Parse).ToArray() ??
+            Array.Empty<EmbedField>();
 
-        public YouTubeVideoEmbedProjection? TryGetYouTubeVideo() =>
-            YouTubeVideoEmbedProjection.TryResolve(this);
-    }
+        var thumbnail = json.GetPropertyOrNull("thumbnail")?.Pipe(EmbedImage.Parse);
 
-    public partial record Embed
-    {
-        public static Embed Parse(JsonElement json)
-        {
-            var title = json.GetPropertyOrNull("title")?.GetStringOrNull();
-            var url = json.GetPropertyOrNull("url")?.GetStringOrNull();
-            var timestamp = json.GetPropertyOrNull("timestamp")?.GetDateTimeOffset();
-            var color = json.GetPropertyOrNull("color")?.GetInt32().Pipe(System.Drawing.Color.FromArgb).ResetAlpha();
-            var description = json.GetPropertyOrNull("description")?.GetStringOrNull();
+        // Under the Discord API model, embeds can only have at most one image.
+        // Because of that, embeds that are rendered with multiple images on the client
+        // (e.g. tweet embeds), are exposed from the API as multiple separate embeds.
+        // Our embed model is consistent with the user-facing side of Discord, so images
+        // are stored as an array. The API will only ever return one image, but we deal
+        // with this by merging related embeds at the end of the message parsing process.
+        // https://github.com/Tyrrrz/DiscordChatExporter/issues/695
+        var images =
+            json.GetPropertyOrNull("image")?.Pipe(EmbedImage.Parse).Enumerate().ToArray() ??
+            Array.Empty<EmbedImage>();
 
-            var author = json.GetPropertyOrNull("author")?.Pipe(EmbedAuthor.Parse);
-            var thumbnail = json.GetPropertyOrNull("thumbnail")?.Pipe(EmbedImage.Parse);
-            var image = json.GetPropertyOrNull("image")?.Pipe(EmbedImage.Parse);
-            var footer = json.GetPropertyOrNull("footer")?.Pipe(EmbedFooter.Parse);
+        var footer = json.GetPropertyOrNull("footer")?.Pipe(EmbedFooter.Parse);
 
-            var fields =
-                json.GetPropertyOrNull("fields")?.EnumerateArray().Select(EmbedField.Parse).ToArray() ??
-                Array.Empty<EmbedField>();
-
-            return new Embed(
-                title,
-                url,
-                timestamp,
-                color,
-                author,
-                description,
-                fields,
-                thumbnail,
-                image,
-                footer
-            );
-        }
+        return new Embed(
+            title,
+            url,
+            timestamp,
+            color,
+            author,
+            description,
+            fields,
+            thumbnail,
+            images,
+            footer
+        );
     }
 }

DiscordChatExporter.Core/Discord/Data/Embeds/EmbedAuthor.cs

@@ -1,23 +1,22 @@
 using System.Text.Json;
 using JsonExtensions.Reading;
 
-namespace DiscordChatExporter.Core.Discord.Data.Embeds
-{
-    // https://discord.com/developers/docs/resources/channel#embed-object-embed-author-structure
-    public record EmbedAuthor(
-        string? Name,
-        string? Url,
-        string? IconUrl,
-        string? IconProxyUrl)
-    {
-        public static EmbedAuthor Parse(JsonElement json)
-        {
-            var name = json.GetPropertyOrNull("name")?.GetStringOrNull();
-            var url = json.GetPropertyOrNull("url")?.GetStringOrNull();
-            var iconUrl = json.GetPropertyOrNull("icon_url")?.GetStringOrNull();
-            var iconProxyUrl = json.GetPropertyOrNull("proxy_icon_url")?.GetStringOrNull();
+namespace DiscordChatExporter.Core.Discord.Data.Embeds;
 
-            return new EmbedAuthor(name, url, iconUrl, iconProxyUrl);
-        }
+// https://discord.com/developers/docs/resources/channel#embed-object-embed-author-structure
+public record EmbedAuthor(
+    string? Name,
+    string? Url,
+    string? IconUrl,
+    string? IconProxyUrl)
+{
+    public static EmbedAuthor Parse(JsonElement json)
+    {
+        var name = json.GetPropertyOrNull("name")?.GetStringOrNull();
+        var url = json.GetPropertyOrNull("url")?.GetNonWhiteSpaceStringOrNull();
+        var iconUrl = json.GetPropertyOrNull("icon_url")?.GetNonWhiteSpaceStringOrNull();
+        var iconProxyUrl = json.GetPropertyOrNull("proxy_icon_url")?.GetNonWhiteSpaceStringOrNull();
+
+        return new EmbedAuthor(name, url, iconUrl, iconProxyUrl);
     }
 }

DiscordChatExporter.Core/Discord/Data/Embeds/EmbedField.cs

@@ -1,22 +1,20 @@
 using System.Text.Json;
-using DiscordChatExporter.Core.Utils.Extensions;
 using JsonExtensions.Reading;
 
-namespace DiscordChatExporter.Core.Discord.Data.Embeds
-{
-    // https://discord.com/developers/docs/resources/channel#embed-object-embed-field-structure
-    public record EmbedField(
-        string Name,
-        string Value,
-        bool IsInline)
-    {
-        public static EmbedField Parse(JsonElement json)
-        {
-            var name = json.GetProperty("name").GetNonWhiteSpaceString();
-            var value = json.GetProperty("value").GetNonWhiteSpaceString();
-            var isInline = json.GetPropertyOrNull("inline")?.GetBoolean() ?? false;
+namespace DiscordChatExporter.Core.Discord.Data.Embeds;
 
-            return new EmbedField(name, value, isInline);
-        }
+// https://discord.com/developers/docs/resources/channel#embed-object-embed-field-structure
+public record EmbedField(
+    string Name,
+    string Value,
+    bool IsInline)
+{
+    public static EmbedField Parse(JsonElement json)
+    {
+        var name = json.GetProperty("name").GetNonNullString();
+        var value = json.GetProperty("value").GetNonNullString();
+        var isInline = json.GetPropertyOrNull("inline")?.GetBooleanOrNull() ?? false;
+
+        return new EmbedField(name, value, isInline);
     }
 }

DiscordChatExporter.Core/Discord/Data/Embeds/EmbedFooter.cs

@@ -1,22 +1,20 @@
 using System.Text.Json;
-using DiscordChatExporter.Core.Utils.Extensions;
 using JsonExtensions.Reading;
 
-namespace DiscordChatExporter.Core.Discord.Data.Embeds
-{
-    // https://discord.com/developers/docs/resources/channel#embed-object-embed-footer-structure
-    public record EmbedFooter(
-        string Text,
-        string? IconUrl,
-        string? IconProxyUrl)
-    {
-        public static EmbedFooter Parse(JsonElement json)
-        {
-            var text = json.GetProperty("text").GetNonWhiteSpaceString();
-            var iconUrl = json.GetPropertyOrNull("icon_url")?.GetStringOrNull();
-            var iconProxyUrl = json.GetPropertyOrNull("proxy_icon_url")?.GetStringOrNull();
+namespace DiscordChatExporter.Core.Discord.Data.Embeds;
 
-            return new EmbedFooter(text, iconUrl, iconProxyUrl);
-        }
+// https://discord.com/developers/docs/resources/channel#embed-object-embed-footer-structure
+public record EmbedFooter(
+    string Text,
+    string? IconUrl,
+    string? IconProxyUrl)
+{
+    public static EmbedFooter Parse(JsonElement json)
+    {
+        var text = json.GetProperty("text").GetNonNullString();
+        var iconUrl = json.GetPropertyOrNull("icon_url")?.GetNonWhiteSpaceStringOrNull();
+        var iconProxyUrl = json.GetPropertyOrNull("proxy_icon_url")?.GetNonWhiteSpaceStringOrNull();
+
+        return new EmbedFooter(text, iconUrl, iconProxyUrl);
     }
 }

DiscordChatExporter.Core/Discord/Data/Embeds/EmbedImage.cs

@@ -1,23 +1,22 @@
 using System.Text.Json;
 using JsonExtensions.Reading;
 
-namespace DiscordChatExporter.Core.Discord.Data.Embeds
-{
-    // https://discord.com/developers/docs/resources/channel#embed-object-embed-image-structure
-    public record EmbedImage(
-        string? Url,
-        string? ProxyUrl,
-        int? Width,
-        int? Height)
-    {
-        public static EmbedImage Parse(JsonElement json)
-        {
-            var url = json.GetPropertyOrNull("url")?.GetStringOrNull();
-            var proxyUrl = json.GetPropertyOrNull("proxy_url")?.GetStringOrNull();
-            var width = json.GetPropertyOrNull("width")?.GetInt32();
-            var height = json.GetPropertyOrNull("height")?.GetInt32();
+namespace DiscordChatExporter.Core.Discord.Data.Embeds;
 
-            return new EmbedImage(url, proxyUrl, width, height);
-        }
+// https://discord.com/developers/docs/resources/channel#embed-object-embed-image-structure
+public record EmbedImage(
+    string? Url,
+    string? ProxyUrl,
+    int? Width,
+    int? Height)
+{
+    public static EmbedImage Parse(JsonElement json)
+    {
+        var url = json.GetPropertyOrNull("url")?.GetNonWhiteSpaceStringOrNull();
+        var proxyUrl = json.GetPropertyOrNull("proxy_url")?.GetNonWhiteSpaceStringOrNull();
+        var width = json.GetPropertyOrNull("width")?.GetInt32OrNull();
+        var height = json.GetPropertyOrNull("height")?.GetInt32OrNull();
+
+        return new EmbedImage(url, proxyUrl, width, height);
     }
 }

DiscordChatExporter.Core/Discord/Data/Embeds/PlainImageEmbedProjection.cs

@@ -3,32 +3,31 @@ using System.Linq;
 using System.Text.RegularExpressions;
 using DiscordChatExporter.Core.Utils;
 
-namespace DiscordChatExporter.Core.Discord.Data.Embeds
+namespace DiscordChatExporter.Core.Discord.Data.Embeds;
+
+public record PlainImageEmbedProjection(string Url)
 {
-    public record PlainImageEmbedProjection(string Url)
+    public static PlainImageEmbedProjection? TryResolve(Embed embed)
     {
-        public static PlainImageEmbedProjection? TryResolve(Embed embed)
+        if (string.IsNullOrWhiteSpace(embed.Url))
+            return null;
+
+        // Has to be an embed without any data (except URL and image)
+        if (!string.IsNullOrWhiteSpace(embed.Title) ||
+            embed.Timestamp is not null ||
+            embed.Author is not null ||
+            !string.IsNullOrWhiteSpace(embed.Description) ||
+            embed.Fields.Any() ||
+            embed.Footer is not null)
         {
-            if (string.IsNullOrWhiteSpace(embed.Url))
-                return null;
-
-            // Has to be an embed without any data (except URL and image)
-            if (!string.IsNullOrWhiteSpace(embed.Title) ||
-                embed.Timestamp is not null ||
-                embed.Author is not null ||
-                !string.IsNullOrWhiteSpace(embed.Description) ||
-                embed.Fields.Any() ||
-                embed.Footer is not null)
-            {
-                return null;
-            }
-
-            // Has to be an image file
-            var fileName = Regex.Match(embed.Url, @".+/([^?]*)").Groups[1].Value;
-            if (string.IsNullOrWhiteSpace(fileName) || !FileFormat.IsImage(Path.GetExtension(fileName)))
-                return null;
-
-            return new PlainImageEmbedProjection(embed.Url);
+            return null;
         }
+
+        // Has to be an image file
+        var fileName = Regex.Match(embed.Url, @".+/([^?]*)").Groups[1].Value;
+        if (string.IsNullOrWhiteSpace(fileName) || !FileFormat.IsImage(Path.GetExtension(fileName)))
+            return null;
+
+        return new PlainImageEmbedProjection(embed.Url);
     }
 }

DiscordChatExporter.Core/Discord/Data/Embeds/SpotifyTrackEmbedProjection.cs

@@ -1,34 +1,33 @@
 using System.Text.RegularExpressions;
 
-namespace DiscordChatExporter.Core.Discord.Data.Embeds
+namespace DiscordChatExporter.Core.Discord.Data.Embeds;
+
+public partial record SpotifyTrackEmbedProjection(string TrackId)
 {
-    public partial record SpotifyTrackEmbedProjection(string TrackId)
+    public string Url => $"https://open.spotify.com/embed/track/{TrackId}";
+}
+
+public partial record SpotifyTrackEmbedProjection
+{
+    private static string? TryParseTrackId(string embedUrl)
     {
-        public string Url => $"https://open.spotify.com/embed/track/{TrackId}";
+        // https://open.spotify.com/track/1LHZMWefF9502NPfArRfvP?si=3efac6ce9be04f0a
+        var trackId = Regex.Match(embedUrl, @"spotify\.com/track/(.*?)(?:\?|&|/|$)").Groups[1].Value;
+        if (!string.IsNullOrWhiteSpace(trackId))
+            return trackId;
+
+        return null;
     }
 
-    public partial record SpotifyTrackEmbedProjection
+    public static SpotifyTrackEmbedProjection? TryResolve(Embed embed)
     {
-        private static string? TryParseTrackId(string embedUrl)
-        {
-            // https://open.spotify.com/track/1LHZMWefF9502NPfArRfvP?si=3efac6ce9be04f0a
-            var trackId = Regex.Match(embedUrl, @"spotify\.com/track/(.*?)(?:\?|&|/|$)").Groups[1].Value;
-            if (!string.IsNullOrWhiteSpace(trackId))
-                return trackId;
-
+        if (string.IsNullOrWhiteSpace(embed.Url))
             return null;
-        }
 
-        public static SpotifyTrackEmbedProjection? TryResolve(Embed embed)
-        {
-            if (string.IsNullOrWhiteSpace(embed.Url))
-                return null;
+        var trackId = TryParseTrackId(embed.Url);
+        if (string.IsNullOrWhiteSpace(trackId))
+            return null;
 
-            var trackId = TryParseTrackId(embed.Url);
-            if (string.IsNullOrWhiteSpace(trackId))
-                return null;
-
-            return new SpotifyTrackEmbedProjection(trackId);
-        }
+        return new SpotifyTrackEmbedProjection(trackId);
     }
 }

DiscordChatExporter.Core/Discord/Data/Embeds/YouTubeVideoEmbedProjection.cs

@@ -1,49 +1,54 @@
 using System.Text.RegularExpressions;
 
-namespace DiscordChatExporter.Core.Discord.Data.Embeds
+namespace DiscordChatExporter.Core.Discord.Data.Embeds;
+
+public partial record YouTubeVideoEmbedProjection(string VideoId)
 {
-    public partial record YouTubeVideoEmbedProjection(string VideoId)
+    public string Url => $"https://www.youtube.com/embed/{VideoId}";
+}
+
+public partial record YouTubeVideoEmbedProjection
+{
+    // Adapted from YoutubeExplode
+    // https://github.com/Tyrrrz/YoutubeExplode/blob/bc700b631bd105d0be208a88116347034bdca88b/YoutubeExplode/Videos/VideoId.cs#L40-L62
+    private static string? TryParseVideoId(string embedUrl)
     {
-        public string Url => $"https://www.youtube.com/embed/{VideoId}";
+        // Regular URL
+        // https://www.youtube.com/watch?v=yIVRs6YSbOM
+        var regularMatch = Regex.Match(embedUrl, @"youtube\..+?/watch.*?v=(.*?)(?:&|/|$)").Groups[1].Value;
+        if (!string.IsNullOrWhiteSpace(regularMatch))
+            return regularMatch;
+
+        // Short URL
+        // https://youtu.be/yIVRs6YSbOM
+        var shortMatch = Regex.Match(embedUrl, @"youtu\.be/(.*?)(?:\?|&|/|$)").Groups[1].Value;
+        if (!string.IsNullOrWhiteSpace(shortMatch))
+            return shortMatch;
+
+        // Embed URL
+        // https://www.youtube.com/embed/yIVRs6YSbOM
+        var embedMatch = Regex.Match(embedUrl, @"youtube\..+?/embed/(.*?)(?:\?|&|/|$)").Groups[1].Value;
+        if (!string.IsNullOrWhiteSpace(embedMatch))
+            return embedMatch;
+
+        // Shorts URL
+        // https://www.youtube.com/shorts/sKL1vjP0tIo
+        var shortsMatch = Regex.Match(embedUrl, @"youtube\..+?/shorts/(.*?)(?:\?|&|/|$)").Groups[1].Value;
+        if (!string.IsNullOrWhiteSpace(shortsMatch))
+            return shortsMatch;
+
+        return null;
     }
 
-    public partial record YouTubeVideoEmbedProjection
+    public static YouTubeVideoEmbedProjection? TryResolve(Embed embed)
     {
-        // Adapted from YoutubeExplode
-        // https://github.com/Tyrrrz/YoutubeExplode/blob/5be164be20019783913f76fcc98f18c65aebe9f0/YoutubeExplode/Videos/VideoId.cs#L34-L64
-        private static string? TryParseVideoId(string embedUrl)
-        {
-            // Regular URL
-            // https://www.youtube.com/watch?v=yIVRs6YSbOM
-            var regularMatch = Regex.Match(embedUrl, @"youtube\..+?/watch.*?v=(.*?)(?:&|/|$)").Groups[1].Value;
-            if (!string.IsNullOrWhiteSpace(regularMatch))
-                return regularMatch;
-
-            // Short URL
-            // https://youtu.be/yIVRs6YSbOM
-            var shortMatch = Regex.Match(embedUrl, @"youtu\.be/(.*?)(?:\?|&|/|$)").Groups[1].Value;
-            if (!string.IsNullOrWhiteSpace(shortMatch))
-                return shortMatch;
-
-            // Embed URL
-            // https://www.youtube.com/embed/yIVRs6YSbOM
-            var embedMatch = Regex.Match(embedUrl, @"youtube\..+?/embed/(.*?)(?:\?|&|/|$)").Groups[1].Value;
-            if (!string.IsNullOrWhiteSpace(embedMatch))
-                return embedMatch;
-
+        if (string.IsNullOrWhiteSpace(embed.Url))
             return null;
-        }
 
-        public static YouTubeVideoEmbedProjection? TryResolve(Embed embed)
-        {
-            if (string.IsNullOrWhiteSpace(embed.Url))
-                return null;
+        var videoId = TryParseVideoId(embed.Url);
+        if (string.IsNullOrWhiteSpace(videoId))
+            return null;
 
-            var videoId = TryParseVideoId(embed.Url);
-            if (string.IsNullOrWhiteSpace(videoId))
-                return null;
-
-            return new YouTubeVideoEmbedProjection(videoId);
-        }
+        return new YouTubeVideoEmbedProjection(videoId);
     }
 }

DiscordChatExporter.Core/Discord/Data/Emoji.cs

@@ -1,60 +1,77 @@
-using System.Linq;
+using System;
+using System.Linq;
 using System.Text.Json;
 using DiscordChatExporter.Core.Utils;
 using DiscordChatExporter.Core.Utils.Extensions;
 using JsonExtensions.Reading;
 
-namespace DiscordChatExporter.Core.Discord.Data
+namespace DiscordChatExporter.Core.Discord.Data;
+
+// https://discord.com/developers/docs/resources/emoji#emoji-object
+public partial record Emoji(
+    // Only present on custom emoji
+    Snowflake? Id,
+    // Name of custom emoji (e.g. LUL) or actual representation of standard emoji (e.g. 🙂)
+    string Name,
+    bool IsAnimated,
+    string ImageUrl)
 {
-    // https://discord.com/developers/docs/resources/emoji#emoji-object
-    public partial record Emoji(
-        // Only present on custom emoji
-        string? 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 => Id is not null
+        ? Name
+        : EmojiIndex.TryGetCode(Name) ?? Name;
+}
+
+public partial record Emoji
+{
+    private static string GetTwemojiName(string name)
     {
-        // Name of custom emoji (e.g. LUL) or name of standard emoji (e.g. slight_smile)
-        public string Code => !string.IsNullOrWhiteSpace(Id)
-            ? Name
-            : EmojiIndex.TryGetCode(Name) ?? Name;
+        var runes = name.GetRunes();
+
+        return string.Join(
+            "-",
+            // Variant selector rune is skipped in Twemoji names, except when the emoji also contains a zero-width joiner.
+            // VS = 0xfe0f. ZWJ = 0x200d.
+            runes.Any(r => r.Value == 0x200d)
+                ? runes.Select(r => r.Value.ToString("x"))
+                : runes.Where(r => r.Value != 0xfe0f).Select(r => r.Value.ToString("x"))
+        );
     }
 
-    public partial record Emoji
+    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(Snowflake? id, string? name, bool isAnimated)
     {
-        private static string GetTwemojiName(string name) => string.Join("-",
-            name
-                .GetRunes()
-                // Variant selector rune is skipped in Twemoji names
-                .Where(r => r.Value != 0xfe0f)
-                .Select(r => r.Value.ToString("x"))
+        // Custom emoji
+        if (id is not null)
+            return GetImageUrl(id.Value, isAnimated);
+
+        // Standard emoji
+        if (!string.IsNullOrWhiteSpace(name))
+            return GetImageUrl(name);
+
+        // Either ID or name should be set
+        throw new ApplicationException("Emoji has neither ID nor name set.");
+    }
+
+    public static Emoji Parse(JsonElement json)
+    {
+        var id = json.GetPropertyOrNull("id")?.GetNonWhiteSpaceStringOrNull()?.Pipe(Snowflake.Parse);
+        var name = json.GetPropertyOrNull("name")?.GetNonWhiteSpaceStringOrNull();
+        var isAnimated = json.GetPropertyOrNull("animated")?.GetBooleanOrNull() ?? false;
+        var imageUrl = GetImageUrl(id, name, isAnimated);
+
+        return new Emoji(
+            id,
+            // Name may be missing if it's an emoji inside a reaction
+            name ?? "<unknown emoji>",
+            isAnimated,
+            imageUrl
         );
-
-        public static string GetImageUrl(string? id, string name, bool isAnimated)
-        {
-            // Custom emoji
-            if (!string.IsNullOrWhiteSpace(id))
-            {
-                return isAnimated
-                    ? $"https://cdn.discordapp.com/emojis/{id}.gif"
-                    : $"https://cdn.discordapp.com/emojis/{id}.png";
-            }
-
-            // Standard emoji
-            var twemojiName = GetTwemojiName(name);
-            return $"https://twemoji.maxcdn.com/2/svg/{twemojiName}.svg";
-        }
-
-        public static Emoji Parse(JsonElement json)
-        {
-            var id = json.GetPropertyOrNull("id")?.GetNonWhiteSpaceString();
-            var name = json.GetProperty("name").GetNonWhiteSpaceString();
-            var isAnimated = json.GetPropertyOrNull("animated")?.GetBoolean() ?? false;
-
-            var imageUrl = GetImageUrl(id, name, isAnimated);
-
-            return new Emoji(id, name, isAnimated, imageUrl);
-        }
     }
 }

DiscordChatExporter.Core/Discord/Data/Guild.cs

@@ -3,34 +3,33 @@ using DiscordChatExporter.Core.Discord.Data.Common;
 using DiscordChatExporter.Core.Utils.Extensions;
 using JsonExtensions.Reading;
 
-namespace DiscordChatExporter.Core.Discord.Data
+namespace DiscordChatExporter.Core.Discord.Data;
+
+// https://discord.com/developers/docs/resources/guild#guild-object
+public record Guild(Snowflake Id, string Name, string IconUrl) : IHasId
 {
-    // https://discord.com/developers/docs/resources/guild#guild-object
-    public record Guild(Snowflake Id, string Name, string IconUrl) : IHasId
+    public static Guild DirectMessages { get; } = new(
+        Snowflake.Zero,
+        "Direct Messages",
+        GetDefaultIconUrl()
+    );
+
+    private static string GetDefaultIconUrl() =>
+        "https://cdn.discordapp.com/embed/avatars/0.png";
+
+    private static string GetIconUrl(Snowflake id, string iconHash) =>
+        $"https://cdn.discordapp.com/icons/{id}/{iconHash}.png";
+
+    public static Guild Parse(JsonElement json)
     {
-        public static Guild DirectMessages { get; } = new(
-            Snowflake.Zero,
-            "Direct Messages",
-            GetDefaultIconUrl()
-        );
+        var id = json.GetProperty("id").GetNonWhiteSpaceString().Pipe(Snowflake.Parse);
+        var name = json.GetProperty("name").GetNonNullString();
 
-        private static string GetDefaultIconUrl() =>
-            "https://cdn.discordapp.com/embed/avatars/0.png";
+        var iconHash = json.GetPropertyOrNull("icon")?.GetNonWhiteSpaceStringOrNull();
+        var iconUrl = !string.IsNullOrWhiteSpace(iconHash)
+            ? GetIconUrl(id, iconHash)
+            : GetDefaultIconUrl();
 
-        private static string GetIconUrl(Snowflake id, string iconHash) =>
-            $"https://cdn.discordapp.com/icons/{id}/{iconHash}.png";
-
-        public static Guild Parse(JsonElement json)
-        {
-            var id = json.GetProperty("id").GetNonWhiteSpaceString().Pipe(Snowflake.Parse);
-            var name = json.GetProperty("name").GetNonWhiteSpaceString();
-            var iconHash = json.GetPropertyOrNull("icon")?.GetStringOrNull();
-
-            var iconUrl = !string.IsNullOrWhiteSpace(iconHash)
-                ? GetIconUrl(id, iconHash)
-                : GetDefaultIconUrl();
-
-            return new Guild(id, name, iconUrl);
-        }
+        return new Guild(id, name, iconUrl);
     }
 }

DiscordChatExporter.Core/Discord/Data/Member.cs

@@ -6,42 +6,41 @@ using DiscordChatExporter.Core.Discord.Data.Common;
 using DiscordChatExporter.Core.Utils.Extensions;
 using JsonExtensions.Reading;
 
-namespace DiscordChatExporter.Core.Discord.Data
+namespace DiscordChatExporter.Core.Discord.Data;
+
+// https://discord.com/developers/docs/resources/guild#guild-member-object
+public partial record Member(
+    User User,
+    string Nick,
+    IReadOnlyList<Snowflake> RoleIds) : IHasId
 {
-    // https://discord.com/developers/docs/resources/guild#guild-member-object
-    public partial record Member(
-        User User,
-        string Nick,
-        IReadOnlyList<Snowflake> RoleIds) : IHasId
-    {
-        public Snowflake Id => User.Id;
-    }
+    public Snowflake Id => User.Id;
+}
 
-    public partial record Member
+public partial record Member
+{
+    public static Member CreateForUser(User user) => new(
+        user,
+        user.Name,
+        Array.Empty<Snowflake>()
+    );
+
+    public static Member Parse(JsonElement json)
     {
-        public static Member CreateForUser(User user) => new(
+        var user = json.GetProperty("user").Pipe(User.Parse);
+        var nick = json.GetPropertyOrNull("nick")?.GetNonWhiteSpaceStringOrNull();
+
+        var roleIds = json
+            .GetPropertyOrNull("roles")?
+            .EnumerateArray()
+            .Select(j => j.GetNonWhiteSpaceString())
+            .Select(Snowflake.Parse)
+            .ToArray() ?? Array.Empty<Snowflake>();
+
+        return new Member(
             user,
-            user.Name,
-            Array.Empty<Snowflake>()
+            nick ?? user.Name,
+            roleIds
         );
-
-        public static Member Parse(JsonElement json)
-        {
-            var user = json.GetProperty("user").Pipe(User.Parse);
-            var nick = json.GetPropertyOrNull("nick")?.GetStringOrNull();
-
-            var roleIds = json
-                .GetPropertyOrNull("roles")?
-                .EnumerateArray()
-                .Select(j => j.GetNonWhiteSpaceString())
-                .Select(Snowflake.Parse)
-                .ToArray() ?? Array.Empty<Snowflake>();
-
-            return new Member(
-                user,
-                nick ?? user.Name,
-                roleIds
-            );
-        }
     }
 }

DiscordChatExporter.Core/Discord/Data/Message.cs

@@ -7,83 +7,150 @@ using DiscordChatExporter.Core.Discord.Data.Embeds;
 using DiscordChatExporter.Core.Utils.Extensions;
 using JsonExtensions.Reading;
 
-namespace DiscordChatExporter.Core.Discord.Data
+namespace DiscordChatExporter.Core.Discord.Data;
+
+// https://discord.com/developers/docs/resources/channel#message-object
+public record Message(
+    Snowflake Id,
+    MessageKind Kind,
+    User Author,
+    DateTimeOffset Timestamp,
+    DateTimeOffset? EditedTimestamp,
+    DateTimeOffset? CallEndedTimestamp,
+    bool IsPinned,
+    string Content,
+    IReadOnlyList<Attachment> Attachments,
+    IReadOnlyList<Embed> Embeds,
+    IReadOnlyList<Sticker> Stickers,
+    IReadOnlyList<Reaction> Reactions,
+    IReadOnlyList<User> MentionedUsers,
+    MessageReference? Reference,
+    Message? ReferencedMessage) : IHasId
 {
-    // https://discord.com/developers/docs/resources/channel#message-object
-    public record Message(
-        Snowflake Id,
-        MessageKind Kind,
-        User Author,
-        DateTimeOffset Timestamp,
-        DateTimeOffset? EditedTimestamp,
-        DateTimeOffset? CallEndedTimestamp,
-        bool IsPinned,
-        string Content,
-        IReadOnlyList<Attachment> Attachments,
-        IReadOnlyList<Embed> Embeds,
-        IReadOnlyList<Reaction> Reactions,
-        IReadOnlyList<User> MentionedUsers,
-        MessageReference? Reference,
-        Message? ReferencedMessage) : IHasId
+    private static IReadOnlyList<Embed> NormalizeEmbeds(IReadOnlyList<Embed> embeds)
     {
-        public static Message Parse(JsonElement json)
+        if (embeds.Count <= 1)
+            return embeds;
+
+        // Discord API doesn't support embeds with multiple images, even though the Discord client does.
+        // To work around this, it seems that the API returns multiple consecutive embeds with different images,
+        // which are then merged together on the client. We need to replicate the same behavior ourselves.
+        // Currently, only known case where this workaround is required is Twitter embeds.
+        // https://github.com/Tyrrrz/DiscordChatExporter/issues/695
+
+        var normalizedEmbeds = new List<Embed>();
+
+        for (var i = 0; i < embeds.Count; i++)
         {
-            var id = json.GetProperty("id").GetNonWhiteSpaceString().Pipe(Snowflake.Parse);
-            var author = json.GetProperty("author").Pipe(User.Parse);
-            var timestamp = json.GetProperty("timestamp").GetDateTimeOffset();
-            var editedTimestamp = json.GetPropertyOrNull("edited_timestamp")?.GetDateTimeOffset();
-            var callEndedTimestamp = json.GetPropertyOrNull("call")?.GetPropertyOrNull("ended_timestamp")
-                ?.GetDateTimeOffset();
-            var kind = (MessageKind)json.GetProperty("type").GetInt32();
-            var isPinned = json.GetPropertyOrNull("pinned")?.GetBoolean() ?? false;
-            var messageReference = json.GetPropertyOrNull("message_reference")?.Pipe(MessageReference.Parse);
-            var referencedMessage = json.GetPropertyOrNull("referenced_message")?.Pipe(Parse);
+            var embed = embeds[i];
 
-            var content = kind switch
+            if (embed.Url?.Contains("://twitter.com/") == true)
             {
-                MessageKind.RecipientAdd => "Added a recipient.",
-                MessageKind.RecipientRemove => "Removed a recipient.",
-                MessageKind.Call =>
-                    $"Started a call that lasted {callEndedTimestamp?.Pipe(t => t - timestamp).Pipe(t => (int)t.TotalMinutes) ?? 0} minutes.",
-                MessageKind.ChannelNameChange => "Changed the channel name.",
-                MessageKind.ChannelIconChange => "Changed the channel icon.",
-                MessageKind.ChannelPinnedMessage => "Pinned a message.",
-                MessageKind.GuildMemberJoin => "Joined the server.",
-                _ => json.GetPropertyOrNull("content")?.GetStringOrNull() ?? ""
-            };
+                // Find embeds with the same URL that only contain a single image and nothing else
+                var trailingEmbeds = embeds
+                    .Skip(i + 1)
+                    .TakeWhile(e =>
+                        e.Url == embed.Url &&
+                        e.Timestamp is null &&
+                        e.Author is null &&
+                        e.Color is null &&
+                        string.IsNullOrWhiteSpace(e.Description) &&
+                        !e.Fields.Any() &&
+                        e.Images.Count == 1 &&
+                        e.Footer is null
+                    )
+                    .ToArray();
 
-            var attachments =
-                json.GetPropertyOrNull("attachments")?.EnumerateArray().Select(Attachment.Parse).ToArray() ??
-                Array.Empty<Attachment>();
+                if (trailingEmbeds.Any())
+                {
+                    // Concatenate all images into one embed
+                    var images = embed.Images.Concat(trailingEmbeds.SelectMany(e => e.Images)).ToArray();
+                    normalizedEmbeds.Add(embed with { Images = images });
 
-            var embeds =
-                json.GetPropertyOrNull("embeds")?.EnumerateArray().Select(Embed.Parse).ToArray() ??
-                Array.Empty<Embed>();
-
-            var reactions =
-                json.GetPropertyOrNull("reactions")?.EnumerateArray().Select(Reaction.Parse).ToArray() ??
-                Array.Empty<Reaction>();
-
-            var mentionedUsers =
-                json.GetPropertyOrNull("mentions")?.EnumerateArray().Select(User.Parse).ToArray() ??
-                Array.Empty<User>();
-
-            return new Message(
-                id,
-                kind,
-                author,
-                timestamp,
-                editedTimestamp,
-                callEndedTimestamp,
-                isPinned,
-                content,
-                attachments,
-                embeds,
-                reactions,
-                mentionedUsers,
-                messageReference,
-                referencedMessage
-            );
+                    i += trailingEmbeds.Length;
+                }
+                else
+                {
+                    normalizedEmbeds.Add(embed);
+                }
+            }
+            else
+            {
+                normalizedEmbeds.Add(embed);
+            }
         }
+
+        return normalizedEmbeds;
+    }
+
+    public static Message Parse(JsonElement json)
+    {
+        var id = json.GetProperty("id").GetNonWhiteSpaceString().Pipe(Snowflake.Parse);
+        var kind = (MessageKind)json.GetProperty("type").GetInt32();
+        var author = json.GetProperty("author").Pipe(User.Parse);
+
+        var timestamp = json.GetProperty("timestamp").GetDateTimeOffset();
+        var editedTimestamp = json.GetPropertyOrNull("edited_timestamp")?.GetDateTimeOffset();
+        var callEndedTimestamp = json
+            .GetPropertyOrNull("call")?
+            .GetPropertyOrNull("ended_timestamp")?
+            .GetDateTimeOffset();
+
+        var isPinned = json.GetPropertyOrNull("pinned")?.GetBooleanOrNull() ?? false;
+
+        var content = kind switch
+        {
+            MessageKind.RecipientAdd => "Added a recipient.",
+            MessageKind.RecipientRemove => "Removed a recipient.",
+            MessageKind.Call =>
+                $"Started a call that lasted {callEndedTimestamp?.Pipe(t => t - timestamp).Pipe(t => (int)t.TotalMinutes) ?? 0} minutes.",
+            MessageKind.ChannelNameChange => "Changed the channel name.",
+            MessageKind.ChannelIconChange => "Changed the channel icon.",
+            MessageKind.ChannelPinnedMessage => "Pinned a message.",
+            MessageKind.GuildMemberJoin => "Joined the server.",
+            _ => json.GetPropertyOrNull("content")?.GetStringOrNull() ?? ""
+        };
+
+        var attachments =
+            json.GetPropertyOrNull("attachments")?.EnumerateArrayOrNull()?.Select(Attachment.Parse).ToArray() ??
+            Array.Empty<Attachment>();
+
+        var embeds = NormalizeEmbeds(
+            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>();
+
+        var mentionedUsers =
+            json.GetPropertyOrNull("mentions")?.EnumerateArrayOrNull()?.Select(User.Parse).ToArray() ??
+            Array.Empty<User>();
+
+        var messageReference = json.GetPropertyOrNull("message_reference")?.Pipe(MessageReference.Parse);
+        var referencedMessage = json.GetPropertyOrNull("referenced_message")?.Pipe(Parse);
+
+        return new Message(
+            id,
+            kind,
+            author,
+            timestamp,
+            editedTimestamp,
+            callEndedTimestamp,
+            isPinned,
+            content,
+            attachments,
+            embeds,
+            stickers,
+            reactions,
+            mentionedUsers,
+            messageReference,
+            referencedMessage
+        );
     }
 }

DiscordChatExporter.Core/Discord/Data/MessageKind.cs

@@ -1,16 +1,15 @@
-namespace DiscordChatExporter.Core.Discord.Data
+namespace DiscordChatExporter.Core.Discord.Data;
+
+// https://discord.com/developers/docs/resources/channel#message-object-message-types
+public enum MessageKind
 {
-    // https://discord.com/developers/docs/resources/channel#message-object-message-types
-    public enum MessageKind
-    {
-        Default = 0,
-        RecipientAdd = 1,
-        RecipientRemove = 2,
-        Call = 3,
-        ChannelNameChange = 4,
-        ChannelIconChange = 5,
-        ChannelPinnedMessage = 6,
-        GuildMemberJoin = 7,
-        Reply = 19
-    }
+    Default = 0,
+    RecipientAdd = 1,
+    RecipientRemove = 2,
+    Call = 3,
+    ChannelNameChange = 4,
+    ChannelIconChange = 5,
+    ChannelPinnedMessage = 6,
+    GuildMemberJoin = 7,
+    Reply = 19
 }

DiscordChatExporter.Core/Discord/Data/MessageReference.cs

@@ -2,18 +2,28 @@ using System.Text.Json;
 using DiscordChatExporter.Core.Utils.Extensions;
 using JsonExtensions.Reading;
 
-namespace DiscordChatExporter.Core.Discord.Data
-{
-    // https://discord.com/developers/docs/resources/channel#message-object-message-reference-structure
-    public record MessageReference(Snowflake? MessageId, Snowflake? ChannelId, Snowflake? GuildId)
-    {
-        public static MessageReference Parse(JsonElement json)
-        {
-            var messageId = json.GetPropertyOrNull("message_id")?.GetStringOrNull()?.Pipe(Snowflake.Parse);
-            var channelId = json.GetPropertyOrNull("channel_id")?.GetStringOrNull()?.Pipe(Snowflake.Parse);
-            var guildId = json.GetPropertyOrNull("guild_id")?.GetStringOrNull()?.Pipe(Snowflake.Parse);
+namespace DiscordChatExporter.Core.Discord.Data;
 
-            return new MessageReference(messageId, channelId, guildId);
-        }
+// https://discord.com/developers/docs/resources/channel#message-object-message-reference-structure
+public record MessageReference(Snowflake? MessageId, Snowflake? ChannelId, Snowflake? GuildId)
+{
+    public static MessageReference Parse(JsonElement json)
+    {
+        var messageId = json
+            .GetPropertyOrNull("message_id")?
+            .GetNonWhiteSpaceStringOrNull()?
+            .Pipe(Snowflake.Parse);
+
+        var channelId = json
+            .GetPropertyOrNull("channel_id")?
+            .GetNonWhiteSpaceStringOrNull()?
+            .Pipe(Snowflake.Parse);
+
+        var guildId = json
+            .GetPropertyOrNull("guild_id")?
+            .GetNonWhiteSpaceStringOrNull()?
+            .Pipe(Snowflake.Parse);
+
+        return new MessageReference(messageId, channelId, guildId);
     }
 }

DiscordChatExporter.Core/Discord/Data/Reaction.cs

@@ -1,17 +1,16 @@
 using System.Text.Json;
 using DiscordChatExporter.Core.Utils.Extensions;
 
-namespace DiscordChatExporter.Core.Discord.Data
-{
-    // https://discord.com/developers/docs/resources/channel#reaction-object
-    public record Reaction(Emoji Emoji, int Count)
-    {
-        public static Reaction Parse(JsonElement json)
-        {
-            var emoji = json.GetProperty("emoji").Pipe(Emoji.Parse);
-            var count = json.GetProperty("count").GetInt32();
+namespace DiscordChatExporter.Core.Discord.Data;
 
-            return new Reaction(emoji, count);
-        }
+// https://discord.com/developers/docs/resources/channel#reaction-object
+public record Reaction(Emoji Emoji, int Count)
+{
+    public static Reaction Parse(JsonElement json)
+    {
+        var emoji = json.GetProperty("emoji").Pipe(Emoji.Parse);
+        var count = json.GetProperty("count").GetInt32();
+
+        return new Reaction(emoji, count);
     }
 }

DiscordChatExporter.Core/Discord/Data/Role.cs

@@ -4,25 +4,24 @@ using DiscordChatExporter.Core.Discord.Data.Common;
 using DiscordChatExporter.Core.Utils.Extensions;
 using JsonExtensions.Reading;
 
-namespace DiscordChatExporter.Core.Discord.Data
+namespace DiscordChatExporter.Core.Discord.Data;
+
+// https://discord.com/developers/docs/topics/permissions#role-object
+public record Role(Snowflake Id, string Name, int Position, Color? Color) : IHasId
 {
-    // https://discord.com/developers/docs/topics/permissions#role-object
-    public record Role(Snowflake Id, string Name, int Position, Color? Color) : IHasId
+    public static Role Parse(JsonElement json)
     {
-        public static Role Parse(JsonElement json)
-        {
-            var id = json.GetProperty("id").GetNonWhiteSpaceString().Pipe(Snowflake.Parse);
-            var name = json.GetProperty("name").GetNonWhiteSpaceString();
-            var position = json.GetProperty("position").GetInt32();
+        var id = json.GetProperty("id").GetNonWhiteSpaceString().Pipe(Snowflake.Parse);
+        var name = json.GetProperty("name").GetNonNullString();
+        var position = json.GetProperty("position").GetInt32();
 
-            var color = json
-                .GetPropertyOrNull("color")?
-                .GetInt32()
-                .Pipe(System.Drawing.Color.FromArgb)
-                .ResetAlpha()
-                .NullIf(c => c.ToRgb() <= 0);
+        var color = json
+            .GetPropertyOrNull("color")?
+            .GetInt32()
+            .Pipe(System.Drawing.Color.FromArgb)
+            .ResetAlpha()
+            .NullIf(c => c.ToRgb() <= 0);
 
-            return new Role(id, name, position, color);
-        }
+        return new Role(id, name, position, color);
     }
 }

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;
+
+// https://discord.com/developers/docs/resources/sticker#sticker-resource
+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").GetNonNullString();
+        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/Data/User.cs

@@ -4,48 +4,47 @@ using DiscordChatExporter.Core.Discord.Data.Common;
 using DiscordChatExporter.Core.Utils.Extensions;
 using JsonExtensions.Reading;
 
-namespace DiscordChatExporter.Core.Discord.Data
-{
-    // https://discord.com/developers/docs/resources/user#user-object
-    public partial record User(
-        Snowflake Id,
-        bool IsBot,
-        int Discriminator,
-        string Name,
-        string AvatarUrl) : IHasId
-    {
-        public string DiscriminatorFormatted => $"{Discriminator:0000}";
+namespace DiscordChatExporter.Core.Discord.Data;
 
-        public string FullName => $"{Name}#{DiscriminatorFormatted}";
+// https://discord.com/developers/docs/resources/user#user-object
+public partial record User(
+    Snowflake Id,
+    bool IsBot,
+    int Discriminator,
+    string Name,
+    string AvatarUrl) : IHasId
+{
+    public string DiscriminatorFormatted => $"{Discriminator:0000}";
+
+    public string FullName => $"{Name}#{DiscriminatorFormatted}";
+}
+
+public partial record User
+{
+    private static string GetDefaultAvatarUrl(int discriminator) =>
+        $"https://cdn.discordapp.com/embed/avatars/{discriminator % 5}.png";
+
+    private static string GetAvatarUrl(Snowflake id, string avatarHash)
+    {
+        var extension = avatarHash.StartsWith("a_", StringComparison.Ordinal)
+            ? "gif"
+            : "png";
+
+        return $"https://cdn.discordapp.com/avatars/{id}/{avatarHash}.{extension}?size=512";
     }
 
-    public partial record User
+    public static User Parse(JsonElement json)
     {
-        private static string GetDefaultAvatarUrl(int discriminator) =>
-            $"https://cdn.discordapp.com/embed/avatars/{discriminator % 5}.png";
+        var id = json.GetProperty("id").GetNonWhiteSpaceString().Pipe(Snowflake.Parse);
+        var isBot = json.GetPropertyOrNull("bot")?.GetBooleanOrNull() ?? false;
+        var discriminator = json.GetProperty("discriminator").GetNonWhiteSpaceString().Pipe(int.Parse);
+        var name = json.GetProperty("username").GetNonNullString();
 
-        private static string GetAvatarUrl(Snowflake id, string avatarHash)
-        {
-            var extension = avatarHash.StartsWith("a_", StringComparison.Ordinal)
-                ? "gif"
-                : "png";
+        var avatarHash = json.GetPropertyOrNull("avatar")?.GetNonWhiteSpaceStringOrNull();
+        var avatarUrl = !string.IsNullOrWhiteSpace(avatarHash)
+            ? GetAvatarUrl(id, avatarHash)
+            : GetDefaultAvatarUrl(discriminator);
 
-            return $"https://cdn.discordapp.com/avatars/{id}/{avatarHash}.{extension}?size=128";
-        }
-
-        public static User Parse(JsonElement json)
-        {
-            var id = json.GetProperty("id").GetNonWhiteSpaceString().Pipe(Snowflake.Parse);
-            var isBot = json.GetPropertyOrNull("bot")?.GetBoolean() ?? false;
-            var discriminator = json.GetProperty("discriminator").GetNonWhiteSpaceString().Pipe(int.Parse);
-            var name = json.GetProperty("username").GetNonWhiteSpaceString();
-            var avatarHash = json.GetPropertyOrNull("avatar")?.GetStringOrNull();
-
-            var avatarUrl = !string.IsNullOrWhiteSpace(avatarHash)
-                ? GetAvatarUrl(id, avatarHash)
-                : GetDefaultAvatarUrl(discriminator);
-
-            return new User(id, isBot, discriminator, name, avatarUrl);
-        }
+        return new User(id, isBot, discriminator, name, avatarUrl);
     }
 }

DiscordChatExporter.Core/Discord/DiscordClient.cs

@@ -11,292 +11,333 @@ 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;
 
-namespace DiscordChatExporter.Core.Discord
+namespace DiscordChatExporter.Core.Discord;
+
+public class DiscordClient
 {
-    public class DiscordClient
+    private readonly string _token;
+    private readonly Uri _baseUri = new("https://discord.com/api/v9/", UriKind.Absolute);
+
+    private TokenKind _tokenKind = TokenKind.Unknown;
+
+    public DiscordClient(string token) => _token = token;
+
+    private async ValueTask<HttpResponseMessage> GetResponseAsync(
+        string url,
+        bool isBot,
+        CancellationToken cancellationToken = default)
     {
-        private readonly AuthToken _token;
-        private readonly Uri _baseUri = new("https://discord.com/api/v8/", UriKind.Absolute);
+        using var request = new HttpRequestMessage(HttpMethod.Get, new Uri(_baseUri, url));
 
-        public DiscordClient(AuthToken token) => _token = token;
+        // Don't validate because token can have invalid characters
+        // https://github.com/Tyrrrz/DiscordChatExporter/issues/828
+        request.Headers.TryAddWithoutValidation(
+            "Authorization",
+            isBot ? $"Bot {_token}" : _token
+        );
 
-        private async ValueTask<HttpResponseMessage> GetResponseAsync(
-            string url,
-            CancellationToken cancellationToken = default)
+        return await Http.Client.SendAsync(
+            request,
+            HttpCompletionOption.ResponseHeadersRead,
+            cancellationToken
+        );
+    }
+
+    private async ValueTask<HttpResponseMessage> GetResponseAsync(
+        string url,
+        CancellationToken cancellationToken = default)
+    {
+        return await Http.ResponseResiliencePolicy.ExecuteAsync(async innerCancellationToken =>
         {
-            return await Http.ResponsePolicy.ExecuteAsync(async innerCancellationToken =>
+            if (_tokenKind == TokenKind.User)
+                return await GetResponseAsync(url, false, innerCancellationToken);
+
+            if (_tokenKind == TokenKind.Bot)
+                return await GetResponseAsync(url, true, innerCancellationToken);
+
+            // Try to authenticate as user
+            var userResponse = await GetResponseAsync(url, false, innerCancellationToken);
+            if (userResponse.StatusCode != HttpStatusCode.Unauthorized)
             {
-                using var request = new HttpRequestMessage(HttpMethod.Get, new Uri(_baseUri, url));
-                request.Headers.Authorization = _token.GetAuthenticationHeader();
-
-                return await Http.Client.SendAsync(
-                    request,
-                    HttpCompletionOption.ResponseHeadersRead,
-                    innerCancellationToken
-                );
-            }, cancellationToken);
-        }
-
-        private async ValueTask<JsonElement> GetJsonResponseAsync(
-            string url,
-            CancellationToken cancellationToken = default)
-        {
-            using var response = await GetResponseAsync(url, cancellationToken);
-
-            if (!response.IsSuccessStatusCode)
-            {
-                throw response.StatusCode switch
-                {
-                    HttpStatusCode.Unauthorized => DiscordChatExporterException.Unauthorized(),
-                    HttpStatusCode.Forbidden => DiscordChatExporterException.Forbidden(),
-                    HttpStatusCode.NotFound => DiscordChatExporterException.NotFound(url),
-                    _ => DiscordChatExporterException.FailedHttpRequest(response)
-                };
+                _tokenKind = TokenKind.User;
+                return userResponse;
             }
 
-            return await response.Content.ReadAsJsonAsync(cancellationToken);
-        }
+            userResponse.Dispose();
 
-        private async ValueTask<JsonElement?> TryGetJsonResponseAsync(
-            string url,
-            CancellationToken cancellationToken = default)
-        {
-            using var response = await GetResponseAsync(url, cancellationToken);
-
-            return response.IsSuccessStatusCode
-                ? await response.Content.ReadAsJsonAsync(cancellationToken)
-                : null;
-        }
-
-        public async IAsyncEnumerable<Guild> GetUserGuildsAsync(
-            [EnumeratorCancellation] CancellationToken cancellationToken = default)
-        {
-            yield return Guild.DirectMessages;
-
-            var currentAfter = Snowflake.Zero;
-
-            while (true)
+            // Otherwise, try to authenticate as bot
+            var botResponse = await GetResponseAsync(url, true, innerCancellationToken);
+            if (botResponse.StatusCode != HttpStatusCode.Unauthorized)
             {
-                var url = new UrlBuilder()
-                    .SetPath("users/@me/guilds")
-                    .SetQueryParameter("limit", "100")
-                    .SetQueryParameter("after", currentAfter.ToString())
-                    .Build();
-
-                var response = await GetJsonResponseAsync(url, cancellationToken);
-
-                var isEmpty = true;
-                foreach (var guild in response.EnumerateArray().Select(Guild.Parse))
-                {
-                    yield return guild;
-
-                    currentAfter = guild.Id;
-                    isEmpty = false;
-                }
-
-                if (isEmpty)
-                    yield break;
+                _tokenKind = TokenKind.Bot;
+                return botResponse;
             }
-        }
 
-        public async ValueTask<Guild> GetGuildAsync(
-            Snowflake guildId,
-            CancellationToken cancellationToken = default)
+            // The token is probably invalid altogether.
+            // Return the last response anyway, upstream should handle the error.
+            return botResponse;
+        }, cancellationToken);
+    }
+
+    private async ValueTask<JsonElement> GetJsonResponseAsync(
+        string url,
+        CancellationToken cancellationToken = default)
+    {
+        using var response = await GetResponseAsync(url, cancellationToken);
+
+        if (!response.IsSuccessStatusCode)
         {
-            if (guildId == Guild.DirectMessages.Id)
-                return Guild.DirectMessages;
-
-            var response = await GetJsonResponseAsync($"guilds/{guildId}", cancellationToken);
-            return Guild.Parse(response);
-        }
-
-        public async IAsyncEnumerable<Channel> GetGuildChannelsAsync(
-            Snowflake guildId,
-            [EnumeratorCancellation] CancellationToken cancellationToken = default)
-        {
-            if (guildId == Guild.DirectMessages.Id)
+            throw response.StatusCode switch
             {
-                var response = await GetJsonResponseAsync("users/@me/channels", cancellationToken);
-                foreach (var channelJson in response.EnumerateArray())
-                    yield return Channel.Parse(channelJson);
-            }
-            else
-            {
-                var response = await GetJsonResponseAsync($"guilds/{guildId}/channels", cancellationToken);
-
-                var responseOrdered = response
-                    .EnumerateArray()
-                    .OrderBy(j => j.GetProperty("position").GetInt32())
-                    .ThenBy(j => j.GetProperty("id").GetNonWhiteSpaceString().Pipe(Snowflake.Parse))
-                    .ToArray();
-
-                var categories = responseOrdered
-                    .Where(j => j.GetProperty("type").GetInt32() == (int) ChannelKind.GuildCategory)
-                    .Select((j, index) => ChannelCategory.Parse(j, index + 1))
-                    .ToDictionary(j => j.Id.ToString(), StringComparer.Ordinal);
-
-                var position = 0;
-
-                foreach (var channelJson in responseOrdered)
-                {
-                    var parentId = channelJson.GetPropertyOrNull("parent_id")?.GetStringOrNull();
-
-                    var category = !string.IsNullOrWhiteSpace(parentId)
-                        ? categories.GetValueOrDefault(parentId)
-                        : null;
-
-                    var channel = Channel.Parse(channelJson, category, position);
-
-                    position++;
-
-                    yield return channel;
-                }
-            }
+                HttpStatusCode.Unauthorized => DiscordChatExporterException.Unauthorized(),
+                HttpStatusCode.Forbidden => DiscordChatExporterException.Forbidden(),
+                HttpStatusCode.NotFound => DiscordChatExporterException.NotFound(url),
+                _ => DiscordChatExporterException.FailedHttpRequest(response)
+            };
         }
 
-        public async IAsyncEnumerable<Role> GetGuildRolesAsync(
-            Snowflake guildId,
-            [EnumeratorCancellation] CancellationToken cancellationToken = default)
-        {
-            if (guildId == Guild.DirectMessages.Id)
-                yield break;
+        return await response.Content.ReadAsJsonAsync(cancellationToken);
+    }
 
-            var response = await GetJsonResponseAsync($"guilds/{guildId}/roles", cancellationToken);
+    private async ValueTask<JsonElement?> TryGetJsonResponseAsync(
+        string url,
+        CancellationToken cancellationToken = default)
+    {
+        using var response = await GetResponseAsync(url, cancellationToken);
 
-            foreach (var roleJson in response.EnumerateArray())
-                yield return Role.Parse(roleJson);
-        }
+        return response.IsSuccessStatusCode
+            ? await response.Content.ReadAsJsonAsync(cancellationToken)
+            : null;
+    }
 
-        public async ValueTask<Member> GetGuildMemberAsync(
-            Snowflake guildId,
-            User user,
-            CancellationToken cancellationToken = default)
-        {
-            if (guildId == Guild.DirectMessages.Id)
-                return Member.CreateForUser(user);
+    public async IAsyncEnumerable<Guild> GetUserGuildsAsync(
+        [EnumeratorCancellation] CancellationToken cancellationToken = default)
+    {
+        yield return Guild.DirectMessages;
 
-            var response = await TryGetJsonResponseAsync($"guilds/{guildId}/members/{user.Id}", cancellationToken);
-            return response?.Pipe(Member.Parse) ?? Member.CreateForUser(user);
-        }
+        var currentAfter = Snowflake.Zero;
 
-        public async ValueTask<ChannelCategory> GetChannelCategoryAsync(
-            Snowflake channelId,
-            CancellationToken cancellationToken = default)
-        {
-            try
-            {
-                var response = await GetJsonResponseAsync($"channels/{channelId}", cancellationToken);
-                return ChannelCategory.Parse(response);
-            }
-            // In some cases, the Discord API returns an empty body when requesting channel category.
-            // Instead, we use an empty channel category as a fallback.
-            catch (DiscordChatExporterException)
-            {
-                return ChannelCategory.Unknown;
-            }
-        }
-
-        public async ValueTask<Channel> GetChannelAsync(
-            Snowflake channelId,
-            CancellationToken cancellationToken = default)
-        {
-            var response = await GetJsonResponseAsync($"channels/{channelId}", cancellationToken);
-
-            var parentId = response.GetPropertyOrNull("parent_id")?.GetStringOrNull()?.Pipe(Snowflake.Parse);
-
-            var category = parentId is not null
-                ? await GetChannelCategoryAsync(parentId.Value, cancellationToken)
-                : null;
-
-            return Channel.Parse(response, category);
-        }
-
-        private async ValueTask<Message?> TryGetLastMessageAsync(
-            Snowflake channelId,
-            Snowflake? before = null,
-            CancellationToken cancellationToken = default)
+        while (true)
         {
             var url = new UrlBuilder()
-                .SetPath($"channels/{channelId}/messages")
-                .SetQueryParameter("limit", "1")
-                .SetQueryParameter("before", before?.ToString())
+                .SetPath("users/@me/guilds")
+                .SetQueryParameter("limit", "100")
+                .SetQueryParameter("after", currentAfter.ToString())
                 .Build();
 
             var response = await GetJsonResponseAsync(url, cancellationToken);
-            return response.EnumerateArray().Select(Message.Parse).LastOrDefault();
-        }
 
-        public async IAsyncEnumerable<Message> GetMessagesAsync(
-            Snowflake channelId,
-            Snowflake? after = null,
-            Snowflake? before = null,
-            IProgress<double>? progress = null,
-            [EnumeratorCancellation] CancellationToken cancellationToken = default)
+            var isEmpty = true;
+            foreach (var guild in response.EnumerateArray().Select(Guild.Parse))
+            {
+                yield return guild;
+
+                currentAfter = guild.Id;
+                isEmpty = false;
+            }
+
+            if (isEmpty)
+                yield break;
+        }
+    }
+
+    public async ValueTask<Guild> GetGuildAsync(
+        Snowflake guildId,
+        CancellationToken cancellationToken = default)
+    {
+        if (guildId == Guild.DirectMessages.Id)
+            return Guild.DirectMessages;
+
+        var response = await GetJsonResponseAsync($"guilds/{guildId}", cancellationToken);
+        return Guild.Parse(response);
+    }
+
+    public async IAsyncEnumerable<Channel> GetGuildChannelsAsync(
+        Snowflake guildId,
+        [EnumeratorCancellation] CancellationToken cancellationToken = default)
+    {
+        if (guildId == Guild.DirectMessages.Id)
         {
-            // Get the last message in the specified range.
-            // This snapshots the boundaries, which means that messages posted after the export started
-            // will not appear in the output.
-            // Additionally, it provides the date of the last message, which is used to calculate progress.
-            var lastMessage = await TryGetLastMessageAsync(channelId, before, cancellationToken);
-            if (lastMessage is null || lastMessage.Timestamp < after?.ToDate())
+            var response = await GetJsonResponseAsync("users/@me/channels", cancellationToken);
+            foreach (var channelJson in response.EnumerateArray())
+                yield return Channel.Parse(channelJson);
+        }
+        else
+        {
+            var response = await GetJsonResponseAsync($"guilds/{guildId}/channels", cancellationToken);
+
+            var responseOrdered = response
+                .EnumerateArray()
+                .OrderBy(j => j.GetProperty("position").GetInt32())
+                .ThenBy(j => j.GetProperty("id").GetNonWhiteSpaceString().Pipe(Snowflake.Parse))
+                .ToArray();
+
+            var categories = responseOrdered
+                .Where(j => j.GetProperty("type").GetInt32() == (int) ChannelKind.GuildCategory)
+                .Select((j, index) => ChannelCategory.Parse(j, index + 1))
+                .ToDictionary(j => j.Id.ToString(), StringComparer.Ordinal);
+
+            // Discord positions are not deterministic, so we need to normalize them
+            // because the user may refer to the channel position via file name template.
+            var position = 0;
+
+            foreach (var channelJson in responseOrdered)
+            {
+                var parentId = channelJson.GetPropertyOrNull("parent_id")?.GetNonWhiteSpaceStringOrNull();
+
+                var category = !string.IsNullOrWhiteSpace(parentId)
+                    ? categories.GetValueOrDefault(parentId)
+                    : null;
+
+                var channel = Channel.Parse(channelJson, category, position);
+
+                position++;
+
+                yield return channel;
+            }
+        }
+    }
+
+    public async IAsyncEnumerable<Role> GetGuildRolesAsync(
+        Snowflake guildId,
+        [EnumeratorCancellation] CancellationToken cancellationToken = default)
+    {
+        if (guildId == Guild.DirectMessages.Id)
+            yield break;
+
+        var response = await GetJsonResponseAsync($"guilds/{guildId}/roles", cancellationToken);
+
+        foreach (var roleJson in response.EnumerateArray())
+            yield return Role.Parse(roleJson);
+    }
+
+    public async ValueTask<Member> GetGuildMemberAsync(
+        Snowflake guildId,
+        User user,
+        CancellationToken cancellationToken = default)
+    {
+        if (guildId == Guild.DirectMessages.Id)
+            return Member.CreateForUser(user);
+
+        var response = await TryGetJsonResponseAsync($"guilds/{guildId}/members/{user.Id}", cancellationToken);
+        return response?.Pipe(Member.Parse) ?? Member.CreateForUser(user);
+    }
+
+    public async ValueTask<ChannelCategory> GetChannelCategoryAsync(
+        Snowflake channelId,
+        CancellationToken cancellationToken = default)
+    {
+        try
+        {
+            var response = await GetJsonResponseAsync($"channels/{channelId}", cancellationToken);
+            return ChannelCategory.Parse(response);
+        }
+        // In some cases, the Discord API returns an empty body when requesting channel category.
+        // Instead, we use an empty channel category as a fallback.
+        catch (DiscordChatExporterException)
+        {
+            return ChannelCategory.Unknown;
+        }
+    }
+
+    public async ValueTask<Channel> GetChannelAsync(
+        Snowflake channelId,
+        CancellationToken cancellationToken = default)
+    {
+        var response = await GetJsonResponseAsync($"channels/{channelId}", cancellationToken);
+
+        var parentId = response.GetPropertyOrNull("parent_id")?.GetNonWhiteSpaceStringOrNull()?.Pipe(Snowflake.Parse);
+
+        var category = parentId is not null
+            ? await GetChannelCategoryAsync(parentId.Value, cancellationToken)
+            : null;
+
+        return Channel.Parse(response, category);
+    }
+
+    private async ValueTask<Message?> TryGetLastMessageAsync(
+        Snowflake channelId,
+        Snowflake? before = null,
+        CancellationToken cancellationToken = default)
+    {
+        var url = new UrlBuilder()
+            .SetPath($"channels/{channelId}/messages")
+            .SetQueryParameter("limit", "1")
+            .SetQueryParameter("before", before?.ToString())
+            .Build();
+
+        var response = await GetJsonResponseAsync(url, cancellationToken);
+        return response.EnumerateArray().Select(Message.Parse).LastOrDefault();
+    }
+
+    public async IAsyncEnumerable<Message> GetMessagesAsync(
+        Snowflake channelId,
+        Snowflake? after = null,
+        Snowflake? before = null,
+        IProgress<Percentage>? progress = null,
+        [EnumeratorCancellation] CancellationToken cancellationToken = default)
+    {
+        // Get the last message in the specified range.
+        // This snapshots the boundaries, which means that messages posted after the export started
+        // will not appear in the output.
+        // Additionally, it provides the date of the last message, which is used to calculate progress.
+        var lastMessage = await TryGetLastMessageAsync(channelId, before, cancellationToken);
+        if (lastMessage is null || lastMessage.Timestamp < after?.ToDate())
+            yield break;
+
+        // Keep track of first message in range in order to calculate progress
+        var firstMessage = default(Message);
+        var currentAfter = after ?? Snowflake.Zero;
+
+        while (true)
+        {
+            var url = new UrlBuilder()
+                .SetPath($"channels/{channelId}/messages")
+                .SetQueryParameter("limit", "100")
+                .SetQueryParameter("after", currentAfter.ToString())
+                .Build();
+
+            var response = await GetJsonResponseAsync(url, cancellationToken);
+
+            var messages = response
+                .EnumerateArray()
+                .Select(Message.Parse)
+                .Reverse() // reverse because messages appear newest first
+                .ToArray();
+
+            // Break if there are no messages (can happen if messages are deleted during execution)
+            if (!messages.Any())
                 yield break;
 
-            // Keep track of first message in range in order to calculate progress
-            var firstMessage = default(Message);
-            var currentAfter = after ?? Snowflake.Zero;
-
-            while (true)
+            foreach (var message in messages)
             {
-                var url = new UrlBuilder()
-                    .SetPath($"channels/{channelId}/messages")
-                    .SetQueryParameter("limit", "100")
-                    .SetQueryParameter("after", currentAfter.ToString())
-                    .Build();
+                firstMessage ??= message;
 
-                var response = await GetJsonResponseAsync(url, cancellationToken);
-
-                var messages = response
-                    .EnumerateArray()
-                    .Select(Message.Parse)
-                    .Reverse() // reverse because messages appear newest first
-                    .ToArray();
-
-                // Break if there are no messages (can happen if messages are deleted during execution)
-                if (!messages.Any())
+                // Ensure messages are in range (take into account that last message could have been deleted)
+                if (message.Timestamp > lastMessage.Timestamp)
                     yield break;
 
-                foreach (var message in messages)
+                // Report progress based on the duration of exported messages divided by total
+                if (progress is not null)
                 {
-                    firstMessage ??= message;
+                    var exportedDuration = (message.Timestamp - firstMessage.Timestamp).Duration();
+                    var totalDuration = (lastMessage.Timestamp - firstMessage.Timestamp).Duration();
 
-                    // Ensure messages are in range (take into account that last message could have been deleted)
-                    if (message.Timestamp > lastMessage.Timestamp)
-                        yield break;
-
-                    // Report progress based on the duration of exported messages divided by total
-                    if (progress is not null)
-                    {
-                        var exportedDuration = (message.Timestamp - firstMessage.Timestamp).Duration();
-                        var totalDuration = (lastMessage.Timestamp - firstMessage.Timestamp).Duration();
-
-                        if (totalDuration > TimeSpan.Zero)
-                        {
-                            progress.Report(exportedDuration / totalDuration);
-                        }
+                    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)
-                        else
-                        {
-                            progress.Report(1);
-                        }
-                    }
-
-                    yield return message;
-                    currentAfter = message.Id;
+                        totalDuration > TimeSpan.Zero
+                            ? exportedDuration / totalDuration
+                            : 1
+                    ));
                 }
+
+                yield return message;
+                currentAfter = message.Id;
             }
         }
     }

DiscordChatExporter.Core/Discord/Snowflake.cs

@@ -3,54 +3,61 @@ using System.Diagnostics.CodeAnalysis;
 using System.Globalization;
 using System.Text.RegularExpressions;
 
-namespace DiscordChatExporter.Core.Discord
+namespace DiscordChatExporter.Core.Discord;
+
+public readonly partial record struct Snowflake(ulong Value)
 {
-    public readonly partial record struct Snowflake(ulong Value)
+    public DateTimeOffset ToDate() => DateTimeOffset.FromUnixTimeMilliseconds(
+        (long)((Value >> 22) + 1420070400000UL)
+    ).ToLocalTime();
+
+    [ExcludeFromCodeCoverage]
+    public override string ToString() => Value.ToString(CultureInfo.InvariantCulture);
+}
+
+public partial record struct Snowflake
+{
+    public static Snowflake Zero { get; } = new(0);
+
+    public static Snowflake FromDate(DateTimeOffset date) => new(
+        ((ulong)date.ToUnixTimeMilliseconds() - 1420070400000UL) << 22
+    );
+
+    public static Snowflake? TryParse(string? str, IFormatProvider? formatProvider = null)
     {
-        public DateTimeOffset ToDate() => DateTimeOffset.FromUnixTimeMilliseconds(
-            (long)((Value >> 22) + 1420070400000UL)
-        ).ToLocalTime();
-
-        [ExcludeFromCodeCoverage]
-        public override string ToString() => Value.ToString(CultureInfo.InvariantCulture);
-    }
-
-    public partial record struct Snowflake
-    {
-        public static Snowflake Zero { get; } = new(0);
-
-        public static Snowflake FromDate(DateTimeOffset date) => new(
-            ((ulong)date.ToUnixTimeMilliseconds() - 1420070400000UL) << 22
-        );
-
-        public static Snowflake? TryParse(string? str, IFormatProvider? formatProvider = null)
-        {
-            if (string.IsNullOrWhiteSpace(str))
-                return null;
-
-            // As number
-            if (Regex.IsMatch(str, @"^\d+$") && ulong.TryParse(str, NumberStyles.Number, formatProvider, out var value))
-            {
-                return new Snowflake(value);
-            }
-
-            // As date
-            if (DateTimeOffset.TryParse(str, formatProvider, DateTimeStyles.None, out var date))
-            {
-                return FromDate(date);
-            }
-
+        if (string.IsNullOrWhiteSpace(str))
             return null;
+
+        // As number
+        if (Regex.IsMatch(str, @"^\d+$") && ulong.TryParse(str, NumberStyles.Number, formatProvider, out var value))
+        {
+            return new Snowflake(value);
         }
 
-        public static Snowflake Parse(string str, IFormatProvider? formatProvider) =>
-            TryParse(str, formatProvider) ?? throw new FormatException($"Invalid snowflake '{str}'.");
+        // As date
+        if (DateTimeOffset.TryParse(str, formatProvider, DateTimeStyles.None, out var date))
+        {
+            return FromDate(date);
+        }
 
-        public static Snowflake Parse(string str) => Parse(str, null);
+        return null;
     }
 
-    public partial record struct Snowflake : IComparable<Snowflake>
+    public static Snowflake Parse(string str, IFormatProvider? formatProvider) =>
+        TryParse(str, formatProvider) ?? throw new FormatException($"Invalid snowflake '{str}'.");
+
+    public static Snowflake Parse(string str) => Parse(str, null);
+}
+
+public partial record struct Snowflake : IComparable<Snowflake>, IComparable
+{
+    public int CompareTo(Snowflake other) => Value.CompareTo(other.Value);
+
+    public int CompareTo(object? obj)
     {
-        public int CompareTo(Snowflake other) => Value.CompareTo(other.Value);
+        if (obj is not Snowflake other)
+            throw new ArgumentException($"Object must be of type {nameof(Snowflake)}.");
+
+        return Value.CompareTo(other.Value);
     }
 }

DiscordChatExporter.Core/Discord/TokenKind.cs

@@ -0,0 +1,8 @@
+namespace DiscordChatExporter.Core.Discord;
+
+public enum TokenKind
+{
+    Unknown,
+    User,
+    Bot
+}

DiscordChatExporter.Core/DiscordChatExporter.Core.csproj

@@ -5,10 +5,12 @@
   </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="7.2.2" />
+    <PackageReference Include="MiniRazor.CodeGen" Version="2.2.1" />
+    <PackageReference Include="Polly" Version="7.2.3" />
     <PackageReference Include="Superpower" Version="3.0.0" />
+    <PackageReference Include="WebMarkupMin.Core" Version="2.9.0" />
   </ItemGroup>
 
   <ItemGroup>

DiscordChatExporter.Core/Exceptions/DiscordChatExporterException.cs

@@ -1,24 +1,24 @@
 using System;
 using System.Net.Http;
 
-namespace DiscordChatExporter.Core.Exceptions
+namespace DiscordChatExporter.Core.Exceptions;
+
+public partial class DiscordChatExporterException : Exception
 {
-    public partial class DiscordChatExporterException : Exception
-    {
-        public bool IsFatal { get; }
+    public bool IsFatal { get; }
 
-        public DiscordChatExporterException(string message, bool isFatal = false)
-            : base(message)
-        {
-            IsFatal = isFatal;
-        }
+    public DiscordChatExporterException(string message, bool isFatal = false)
+        : base(message)
+    {
+        IsFatal = isFatal;
     }
+}
 
-    public partial class DiscordChatExporterException
+public partial class DiscordChatExporterException
+{
+    internal static DiscordChatExporterException FailedHttpRequest(HttpResponseMessage response)
     {
-        internal static DiscordChatExporterException FailedHttpRequest(HttpResponseMessage response)
-        {
-            var message = $@"
+        var message = $@"
 Failed to perform an HTTP request.
 
 [Request]
@@ -27,19 +27,18 @@ Failed to perform an HTTP request.
 [Response]
 {response}";
 
-            return new DiscordChatExporterException(message.Trim(), true);
-        }
-
-        internal static DiscordChatExporterException Unauthorized() =>
-            new("Authentication token is invalid.", true);
-
-        internal static DiscordChatExporterException Forbidden() =>
-            new("Access is forbidden.");
-
-        internal static DiscordChatExporterException NotFound(string resourceId) =>
-            new($"Requested resource ({resourceId}) does not exist.");
-
-        internal static DiscordChatExporterException ChannelIsEmpty() =>
-            new("No messages found for the specified period.");
+        return new DiscordChatExporterException(message.Trim(), true);
     }
+
+    internal static DiscordChatExporterException Unauthorized() =>
+        new("Authentication token is invalid.", true);
+
+    internal static DiscordChatExporterException Forbidden() =>
+        new("Access is forbidden.");
+
+    internal static DiscordChatExporterException NotFound(string resourceId) =>
+        new($"Requested resource ({resourceId}) does not exist.");
+
+    internal static DiscordChatExporterException ChannelIsEmpty() =>
+        new("No messages found for the specified period.");
 }

DiscordChatExporter.Core/Exporting/ChannelExporter.cs

@@ -8,76 +8,74 @@ 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
+namespace DiscordChatExporter.Core.Exporting;
+
+public class ChannelExporter
 {
-    public class ChannelExporter
+    private readonly DiscordClient _discord;
+
+    public ChannelExporter(DiscordClient discord) => _discord = discord;
+
+    public async ValueTask ExportChannelAsync(
+        ExportRequest request,
+        IProgress<Percentage>? progress = null,
+        CancellationToken cancellationToken = default)
     {
-        private readonly DiscordClient _discord;
+        // Build context
+        var contextMembers = new HashSet<Member>(IdBasedEqualityComparer.Instance);
+        var contextChannels = await _discord.GetGuildChannelsAsync(request.Guild.Id, cancellationToken);
+        var contextRoles = await _discord.GetGuildRolesAsync(request.Guild.Id, cancellationToken);
 
-        public ChannelExporter(DiscordClient discord) => _discord = discord;
+        var context = new ExportContext(
+            request,
+            contextMembers,
+            contextChannels,
+            contextRoles
+        );
 
-        public ChannelExporter(AuthToken token) : this(new DiscordClient(token)) {}
+        // Export messages
+        await using var messageExporter = new MessageExporter(context);
 
-        public async ValueTask ExportChannelAsync(
-            ExportRequest request,
-            IProgress<double>? progress = null,
-            CancellationToken cancellationToken = default)
+        var exportedAnything = false;
+        var encounteredUsers = new HashSet<User>(IdBasedEqualityComparer.Instance);
+
+        await foreach (var message in _discord.GetMessagesAsync(
+                           request.Channel.Id,
+                           request.After,
+                           request.Before,
+                           progress,
+                           cancellationToken))
         {
-            // Build context
-            var contextMembers = new HashSet<Member>(IdBasedEqualityComparer.Instance);
-            var contextChannels = await _discord.GetGuildChannelsAsync(request.Guild.Id, cancellationToken);
-            var contextRoles = await _discord.GetGuildRolesAsync(request.Guild.Id, cancellationToken);
+            cancellationToken.ThrowIfCancellationRequested();
 
-            var context = new ExportContext(
-                request,
-                contextMembers,
-                contextChannels,
-                contextRoles
-            );
+            // Skips any messages that fail to pass the supplied filter
+            if (!request.MessageFilter.IsMatch(message))
+                continue;
 
-            // Export messages
-            await using var messageExporter = new MessageExporter(context);
-
-            var exportedAnything = false;
-            var encounteredUsers = new HashSet<User>(IdBasedEqualityComparer.Instance);
-
-            await foreach (var message in _discord.GetMessagesAsync(
-                request.Channel.Id,
-                request.After,
-                request.Before,
-                progress,
-                cancellationToken))
+            // Resolve members for referenced users
+            foreach (var referencedUser in message.MentionedUsers.Prepend(message.Author))
             {
-                cancellationToken.ThrowIfCancellationRequested();
-
-                // Skips any messages that fail to pass the supplied filter
-                if (!request.MessageFilter.IsMatch(message))
+                if (!encounteredUsers.Add(referencedUser))
                     continue;
 
-                // Resolve members for referenced users
-                foreach (var referencedUser in message.MentionedUsers.Prepend(message.Author))
-                {
-                    if (!encounteredUsers.Add(referencedUser))
-                        continue;
+                var member = await _discord.GetGuildMemberAsync(
+                    request.Guild.Id,
+                    referencedUser,
+                    cancellationToken
+                );
 
-                    var member = await _discord.GetGuildMemberAsync(
-                        request.Guild.Id,
-                        referencedUser,
-                        cancellationToken
-                    );
-
-                    contextMembers.Add(member);
-                }
-
-                // Export message
-                await messageExporter.ExportMessageAsync(message, cancellationToken);
-                exportedAnything = true;
+                contextMembers.Add(member);
             }
 
-            // Throw if no messages were exported
-            if (!exportedAnything)
-                throw DiscordChatExporterException.ChannelIsEmpty();
+            // Export message
+            await messageExporter.ExportMessageAsync(message, cancellationToken);
+            exportedAnything = true;
         }
+
+        // Throw if no messages were exported
+        if (!exportedAnything)
+            throw DiscordChatExporterException.ChannelIsEmpty();
     }
 }

DiscordChatExporter.Core/Exporting/ExportContext.cs

@@ -10,97 +10,96 @@ using DiscordChatExporter.Core.Discord;
 using DiscordChatExporter.Core.Discord.Data;
 using DiscordChatExporter.Core.Utils.Extensions;
 
-namespace DiscordChatExporter.Core.Exporting
+namespace DiscordChatExporter.Core.Exporting;
+
+internal class ExportContext
 {
-    internal class ExportContext
+    private readonly MediaDownloader _mediaDownloader;
+
+    public ExportRequest Request { get; }
+
+    public IReadOnlyCollection<Member> Members { get; }
+
+    public IReadOnlyCollection<Channel> Channels { get; }
+
+    public IReadOnlyCollection<Role> Roles { get; }
+
+    public ExportContext(
+        ExportRequest request,
+        IReadOnlyCollection<Member> members,
+        IReadOnlyCollection<Channel> channels,
+        IReadOnlyCollection<Role> roles)
     {
-        private readonly MediaDownloader _mediaDownloader;
+        Request = request;
+        Members = members;
+        Channels = channels;
+        Roles = roles;
 
-        public ExportRequest Request { get; }
+        _mediaDownloader = new MediaDownloader(request.OutputMediaDirPath, request.ShouldReuseMedia);
+    }
 
-        public IReadOnlyCollection<Member> Members { get; }
+    public string FormatDate(DateTimeOffset date) => Request.DateFormat switch
+    {
+        "unix" => date.ToUnixTimeSeconds().ToString(),
+        "unixms" => date.ToUnixTimeMilliseconds().ToString(),
+        var dateFormat => date.ToLocalString(dateFormat)
+    };
 
-        public IReadOnlyCollection<Channel> Channels { get; }
+    public Member? TryGetMember(Snowflake id) => Members.FirstOrDefault(m => m.Id == id);
 
-        public IReadOnlyCollection<Role> Roles { get; }
+    public Channel? TryGetChannel(Snowflake id) => Channels.FirstOrDefault(c => c.Id == id);
 
-        public ExportContext(
-            ExportRequest request,
-            IReadOnlyCollection<Member> members,
-            IReadOnlyCollection<Channel> channels,
-            IReadOnlyCollection<Role> roles)
+    public Role? TryGetRole(Snowflake id) => Roles.FirstOrDefault(r => r.Id == id);
+
+    public Color? TryGetUserColor(Snowflake id)
+    {
+        var member = TryGetMember(id);
+        var roles = member?.RoleIds.Join(Roles, i => i, r => r.Id, (_, role) => role);
+
+        return roles?
+            .Where(r => r.Color is not null)
+            .OrderByDescending(r => r.Position)
+            .Select(r => r.Color)
+            .FirstOrDefault();
+    }
+
+    public async ValueTask<string> ResolveMediaUrlAsync(string url, CancellationToken cancellationToken = default)
+    {
+        if (!Request.ShouldDownloadMedia)
+            return url;
+
+        try
         {
-            Request = request;
-            Members = members;
-            Channels = channels;
-            Roles = roles;
+            var filePath = await _mediaDownloader.DownloadAsync(url, cancellationToken);
 
-            _mediaDownloader = new MediaDownloader(request.OutputMediaDirPath, request.ShouldReuseMedia);
-        }
+            // We want relative path so that the output files can be copied around without breaking.
+            // Base directory path may be null if the file is stored at the root or relative to working directory.
+            var relativeFilePath = !string.IsNullOrWhiteSpace(Request.OutputBaseDirPath)
+                ? Path.GetRelativePath(Request.OutputBaseDirPath, filePath)
+                : filePath;
 
-        public string FormatDate(DateTimeOffset date) => Request.DateFormat switch
-        {
-            "unix" => date.ToUnixTimeSeconds().ToString(),
-            "unixms" => date.ToUnixTimeMilliseconds().ToString(),
-            var dateFormat => date.ToLocalString(dateFormat)
-        };
-
-        public Member? TryGetMember(Snowflake id) => Members.FirstOrDefault(m => m.Id == id);
-
-        public Channel? TryGetChannel(Snowflake id) => Channels.FirstOrDefault(c => c.Id == id);
-
-        public Role? TryGetRole(Snowflake id) => Roles.FirstOrDefault(r => r.Id == id);
-
-        public Color? TryGetUserColor(Snowflake id)
-        {
-            var member = TryGetMember(id);
-            var roles = member?.RoleIds.Join(Roles, i => i, r => r.Id, (_, role) => role);
-
-            return roles?
-                .Where(r => r.Color is not null)
-                .OrderByDescending(r => r.Position)
-                .Select(r => r.Color)
-                .FirstOrDefault();
-        }
-
-        public async ValueTask<string> ResolveMediaUrlAsync(string url, CancellationToken cancellationToken = default)
-        {
-            if (!Request.ShouldDownloadMedia)
-                return url;
-
-            try
+            // HACK: for HTML, we need to format the URL properly
+            if (Request.Format is ExportFormat.HtmlDark or ExportFormat.HtmlLight)
             {
-                var filePath = await _mediaDownloader.DownloadAsync(url, cancellationToken);
-
-                // We want relative path so that the output files can be copied around without breaking.
-                // Base directory path may be null if the file is stored at the root or relative to working directory.
-                var relativeFilePath = !string.IsNullOrWhiteSpace(Request.OutputBaseDirPath)
-                    ? Path.GetRelativePath(Request.OutputBaseDirPath, filePath)
-                    : filePath;
-
-                // HACK: for HTML, we need to format the URL properly
-                if (Request.Format is ExportFormat.HtmlDark or ExportFormat.HtmlLight)
-                {
-                    // Need to escape each path segment while keeping the directory separators intact
-                    return string.Join(
-                        Path.AltDirectorySeparatorChar,
-                        relativeFilePath
-                            .Split(Path.DirectorySeparatorChar, Path.AltDirectorySeparatorChar)
-                            .Select(Uri.EscapeDataString)
-                    );
-                }
-
-                return relativeFilePath;
-            }
-            // Try to catch only exceptions related to failed HTTP requests
-            // https://github.com/Tyrrrz/DiscordChatExporter/issues/332
-            // https://github.com/Tyrrrz/DiscordChatExporter/issues/372
-            catch (Exception ex) when (ex is HttpRequestException or OperationCanceledException)
-            {
-                // TODO: add logging so we can be more liberal with catching exceptions
-                // We don't want this to crash the exporting process in case of failure
-                return url;
+                // Need to escape each path segment while keeping the directory separators intact
+                return string.Join(
+                    Path.AltDirectorySeparatorChar,
+                    relativeFilePath
+                        .Split(Path.DirectorySeparatorChar, Path.AltDirectorySeparatorChar)
+                        .Select(Uri.EscapeDataString)
+                );
             }
+
+            return relativeFilePath;
+        }
+        // Try to catch only exceptions related to failed HTTP requests
+        // https://github.com/Tyrrrz/DiscordChatExporter/issues/332
+        // https://github.com/Tyrrrz/DiscordChatExporter/issues/372
+        catch (Exception ex) when (ex is HttpRequestException or OperationCanceledException)
+        {
+            // TODO: add logging so we can be more liberal with catching exceptions
+            // We don't want this to crash the exporting process in case of failure
+            return url;
         }
     }
 }

DiscordChatExporter.Core/Exporting/ExportFormat.cs

@@ -1,36 +1,35 @@
 using System;
 
-namespace DiscordChatExporter.Core.Exporting
+namespace DiscordChatExporter.Core.Exporting;
+
+public enum ExportFormat
 {
-    public enum ExportFormat
-    {
-        PlainText,
-        HtmlDark,
-        HtmlLight,
-        Csv,
-        Json
-    }
+    PlainText,
+    HtmlDark,
+    HtmlLight,
+    Csv,
+    Json
+}
 
-    public static class ExportFormatExtensions
+public static class ExportFormatExtensions
+{
+    public static string GetFileExtension(this ExportFormat format) => format switch
     {
-        public static string GetFileExtension(this ExportFormat format) => format switch
-        {
-            ExportFormat.PlainText => "txt",
-            ExportFormat.HtmlDark => "html",
-            ExportFormat.HtmlLight => "html",
-            ExportFormat.Csv => "csv",
-            ExportFormat.Json => "json",
-            _ => throw new ArgumentOutOfRangeException(nameof(format))
-        };
+        ExportFormat.PlainText => "txt",
+        ExportFormat.HtmlDark => "html",
+        ExportFormat.HtmlLight => "html",
+        ExportFormat.Csv => "csv",
+        ExportFormat.Json => "json",
+        _ => throw new ArgumentOutOfRangeException(nameof(format))
+    };
 
-        public static string GetDisplayName(this ExportFormat format) => format switch
-        {
-            ExportFormat.PlainText => "TXT",
-            ExportFormat.HtmlDark => "HTML (Dark)",
-            ExportFormat.HtmlLight => "HTML (Light)",
-            ExportFormat.Csv => "CSV",
-            ExportFormat.Json => "JSON",
-            _ => throw new ArgumentOutOfRangeException(nameof(format))
-        };
-    }
+    public static string GetDisplayName(this ExportFormat format) => format switch
+    {
+        ExportFormat.PlainText => "TXT",
+        ExportFormat.HtmlDark => "HTML (Dark)",
+        ExportFormat.HtmlLight => "HTML (Light)",
+        ExportFormat.Csv => "CSV",
+        ExportFormat.Json => "JSON",
+        _ => throw new ArgumentOutOfRangeException(nameof(format))
+    };
 }

DiscordChatExporter.Core/Exporting/ExportRequest.cs

@@ -8,120 +8,116 @@ using DiscordChatExporter.Core.Exporting.Filtering;
 using DiscordChatExporter.Core.Exporting.Partitioning;
 using DiscordChatExporter.Core.Utils;
 
-namespace DiscordChatExporter.Core.Exporting
+namespace DiscordChatExporter.Core.Exporting;
+
+public partial record ExportRequest(
+    Guild Guild,
+    Channel Channel,
+    string OutputPath,
+    ExportFormat Format,
+    Snowflake? After,
+    Snowflake? Before,
+    PartitionLimit PartitionLimit,
+    MessageFilter MessageFilter,
+    bool ShouldDownloadMedia,
+    bool ShouldReuseMedia,
+    string DateFormat)
 {
-    public partial record ExportRequest(
-        Guild Guild,
-        Channel Channel,
-        string OutputPath,
-        ExportFormat Format,
-        Snowflake? After,
-        Snowflake? Before,
-        PartitionLimit PartitionLimit,
-        MessageFilter MessageFilter,
-        bool ShouldDownloadMedia,
-        bool ShouldReuseMedia,
-        string DateFormat)
+    private string? _outputBaseFilePath;
+    public string OutputBaseFilePath => _outputBaseFilePath ??= GetOutputBaseFilePath(
+        Guild,
+        Channel,
+        OutputPath,
+        Format,
+        After,
+        Before
+    );
+
+    public string OutputBaseDirPath => Path.GetDirectoryName(OutputBaseFilePath) ?? OutputPath;
+
+    public string OutputMediaDirPath => $"{OutputBaseFilePath}_Files{Path.DirectorySeparatorChar}";
+}
+
+public partial record ExportRequest
+{
+    private static string GetOutputBaseFilePath(
+        Guild guild,
+        Channel channel,
+        string outputPath,
+        ExportFormat format,
+        Snowflake? after = null,
+        Snowflake? before = null)
     {
-        private string? _outputBaseFilePath;
-        public string OutputBaseFilePath => _outputBaseFilePath ??= GetOutputBaseFilePath(
-            Guild,
-            Channel,
-            OutputPath,
-            Format,
-            After,
-            Before
+        // Formats path
+        outputPath = Regex.Replace(outputPath, "%.", m =>
+            PathEx.EscapeFileName(m.Value switch
+            {
+                "%g" => guild.Id.ToString(),
+                "%G" => guild.Name,
+                "%t" => channel.Category.Id.ToString(),
+                "%T" => channel.Category.Name,
+                "%c" => channel.Id.ToString(),
+                "%C" => channel.Name,
+                "%p" => channel.Position?.ToString() ?? "0",
+                "%P" => channel.Category.Position?.ToString() ?? "0",
+                "%a" => after?.ToDate().ToString("yyyy-MM-dd") ?? "",
+                "%b" => before?.ToDate().ToString("yyyy-MM-dd") ?? "",
+                "%d" => DateTimeOffset.Now.ToString("yyyy-MM-dd"),
+                "%%" => "%",
+                _ => m.Value
+            })
         );
 
-        public string OutputBaseDirPath => Path.GetDirectoryName(OutputBaseFilePath) ?? OutputPath;
+        // Output is a directory
+        if (Directory.Exists(outputPath) || string.IsNullOrWhiteSpace(Path.GetExtension(outputPath)))
+        {
+            var fileName = GetDefaultOutputFileName(guild, channel, format, after, before);
+            return Path.Combine(outputPath, fileName);
+        }
 
-        public string OutputMediaDirPath => $"{OutputBaseFilePath}_Files{Path.DirectorySeparatorChar}";
+        // Output is a file
+        return outputPath;
     }
 
-    public partial record ExportRequest
+    public static string GetDefaultOutputFileName(
+        Guild guild,
+        Channel channel,
+        ExportFormat format,
+        Snowflake? after = null,
+        Snowflake? before = null)
     {
-        private static string GetOutputBaseFilePath(
-            Guild guild,
-            Channel channel,
-            string outputPath,
-            ExportFormat format,
-            Snowflake? after = null,
-            Snowflake? before = null)
+        var buffer = new StringBuilder();
+
+        // Guild and channel names
+        buffer.Append($"{guild.Name} - {channel.Category.Name} - {channel.Name} [{channel.Id}]");
+
+        // Date range
+        if (after is not null || before is not null)
         {
+            buffer.Append(' ').Append('(');
 
-            // Formats path
-            outputPath = Regex.Replace(outputPath, "%.", m =>
-                PathEx.EscapePath(m.Value switch
-                {
-                    "%g" => guild.Id.ToString(),
-                    "%G" => guild.Name,
-                    "%t" => channel.Category.Id.ToString(),
-                    "%T" => channel.Category.Name,
-                    "%c" => channel.Id.ToString(),
-                    "%C" => channel.Name,
-                    "%p" => channel.Position?.ToString() ?? "0",
-                    "%P" => channel.Category.Position?.ToString() ?? "0",
-                    "%a" => (after ?? Snowflake.Zero).ToDate().ToString("yyyy-MM-dd"),
-                    "%b" => (before?.ToDate() ?? DateTime.Now).ToString("yyyy-MM-dd"),
-                    "%%" => "%",
-                    _ => m.Value
-                })
-            );
-
-            // Output is a directory
-            if (Directory.Exists(outputPath) || string.IsNullOrWhiteSpace(Path.GetExtension(outputPath)))
+            // Both 'after' and 'before' are set
+            if (after is not null && before is not null)
             {
-                var fileName = GetDefaultOutputFileName(guild, channel, format, after, before);
-                return Path.Combine(outputPath, fileName);
+                buffer.Append($"{after.Value.ToDate():yyyy-MM-dd} to {before.Value.ToDate():yyyy-MM-dd}");
+            }
+            // Only 'after' is set
+            else if (after is not null)
+            {
+                buffer.Append($"after {after.Value.ToDate():yyyy-MM-dd}");
+            }
+            // Only 'before' is set
+            else if (before is not null)
+            {
+                buffer.Append($"before {before.Value.ToDate():yyyy-MM-dd}");
             }
 
-            // Output is a file
-            return outputPath;
+            buffer.Append(')');
         }
 
-        public static string GetDefaultOutputFileName(
-            Guild guild,
-            Channel channel,
-            ExportFormat format,
-            Snowflake? after = null,
-            Snowflake? before = null)
-        {
-            var buffer = new StringBuilder();
+        // File extension
+        buffer.Append('.').Append(format.GetFileExtension());
 
-            // Guild and channel names
-            buffer.Append($"{guild.Name} - {channel.Category.Name} - {channel.Name} [{channel.Id}]");
-
-            // Date range
-            if (after is not null || before is not null)
-            {
-                buffer.Append(" (");
-
-                // Both 'after' and 'before' are set
-                if (after is not null && before is not null)
-                {
-                    buffer.Append($"{after.Value.ToDate():yyyy-MM-dd} to {before.Value.ToDate():yyyy-MM-dd}");
-                }
-                // Only 'after' is set
-                else if (after is not null)
-                {
-                    buffer.Append($"after {after.Value.ToDate():yyyy-MM-dd}");
-                }
-                // Only 'before' is set
-                else if (before is not null)
-                {
-                    buffer.Append($"before {before.Value.ToDate():yyyy-MM-dd}");
-                }
-
-                buffer.Append(")");
-            }
-
-            // File extension
-            buffer.Append($".{format.GetFileExtension()}");
-
-            // Replace invalid chars
-            PathEx.EscapePath(buffer);
-
-            return buffer.ToString();
-        }
+        return PathEx.EscapeFileName(buffer.ToString());
     }
 }

DiscordChatExporter.Core/Exporting/Filtering/BinaryExpressionKind.cs

@@ -1,8 +1,7 @@
-namespace DiscordChatExporter.Core.Exporting.Filtering
+namespace DiscordChatExporter.Core.Exporting.Filtering;
+
+internal enum BinaryExpressionKind
 {
-    internal enum BinaryExpressionKind
-    {
-        Or,
-        And
-    }
+    Or,
+    And
 }

DiscordChatExporter.Core/Exporting/Filtering/BinaryExpressionMessageFilter.cs

@@ -1,26 +1,25 @@
 using System;
 using DiscordChatExporter.Core.Discord.Data;
 
-namespace DiscordChatExporter.Core.Exporting.Filtering
+namespace DiscordChatExporter.Core.Exporting.Filtering;
+
+internal class BinaryExpressionMessageFilter : MessageFilter
 {
-    internal class BinaryExpressionMessageFilter : MessageFilter
+    private readonly MessageFilter _first;
+    private readonly MessageFilter _second;
+    private readonly BinaryExpressionKind _kind;
+
+    public BinaryExpressionMessageFilter(MessageFilter first, MessageFilter second, BinaryExpressionKind kind)
     {
-        private readonly MessageFilter _first;
-        private readonly MessageFilter _second;
-        private readonly BinaryExpressionKind _kind;
-
-        public BinaryExpressionMessageFilter(MessageFilter first, MessageFilter second, BinaryExpressionKind kind)
-        {
-            _first = first;
-            _second = second;
-            _kind = kind;
-        }
-
-        public override bool IsMatch(Message message) => _kind switch
-        {
-            BinaryExpressionKind.Or => _first.IsMatch(message) || _second.IsMatch(message),
-            BinaryExpressionKind.And => _first.IsMatch(message) && _second.IsMatch(message),
-            _ => throw new InvalidOperationException($"Unknown binary expression kind '{_kind}'.")
-        };
+        _first = first;
+        _second = second;
+        _kind = kind;
     }
+
+    public override bool IsMatch(Message message) => _kind switch
+    {
+        BinaryExpressionKind.Or => _first.IsMatch(message) || _second.IsMatch(message),
+        BinaryExpressionKind.And => _first.IsMatch(message) && _second.IsMatch(message),
+        _ => throw new InvalidOperationException($"Unknown binary expression kind '{_kind}'.")
+    };
 }

DiscordChatExporter.Core/Exporting/Filtering/ContainsMessageFilter.cs

@@ -2,33 +2,32 @@
 using System.Text.RegularExpressions;
 using DiscordChatExporter.Core.Discord.Data;
 
-namespace DiscordChatExporter.Core.Exporting.Filtering
+namespace DiscordChatExporter.Core.Exporting.Filtering;
+
+internal class ContainsMessageFilter : MessageFilter
 {
-    internal class ContainsMessageFilter : MessageFilter
-    {
-        private readonly string _text;
+    private readonly string _text;
 
-        public ContainsMessageFilter(string text) => _text = text;
+    public ContainsMessageFilter(string text) => _text = text;
 
-        private bool IsMatch(string? content) =>
-            !string.IsNullOrWhiteSpace(content) &&
-            Regex.IsMatch(
-                content,
-                "\\b" + Regex.Escape(_text) + "\\b",
-                RegexOptions.IgnoreCase | RegexOptions.CultureInvariant
-            );
+    private bool IsMatch(string? content) =>
+        !string.IsNullOrWhiteSpace(content) &&
+        Regex.IsMatch(
+            content,
+            "\\b" + Regex.Escape(_text) + "\\b",
+            RegexOptions.IgnoreCase | RegexOptions.CultureInvariant
+        );
 
-        public override bool IsMatch(Message message) =>
-            IsMatch(message.Content) ||
-            message.Embeds.Any(e =>
-                IsMatch(e.Title) ||
-                IsMatch(e.Author?.Name) ||
-                IsMatch(e.Description) ||
-                IsMatch(e.Footer?.Text) ||
-                e.Fields.Any(f =>
-                    IsMatch(f.Name) ||
-                    IsMatch(f.Value)
-                )
-            );
-    }
+    public override bool IsMatch(Message message) =>
+        IsMatch(message.Content) ||
+        message.Embeds.Any(e =>
+            IsMatch(e.Title) ||
+            IsMatch(e.Author?.Name) ||
+            IsMatch(e.Description) ||
+            IsMatch(e.Footer?.Text) ||
+            e.Fields.Any(f =>
+                IsMatch(f.Name) ||
+                IsMatch(f.Value)
+            )
+        );
 }

DiscordChatExporter.Core/Exporting/Filtering/FromMessageFilter.cs

@@ -1,17 +1,16 @@
 using System;
 using DiscordChatExporter.Core.Discord.Data;
 
-namespace DiscordChatExporter.Core.Exporting.Filtering
+namespace DiscordChatExporter.Core.Exporting.Filtering;
+
+internal class FromMessageFilter : MessageFilter
 {
-    internal class FromMessageFilter : MessageFilter
-    {
-        private readonly string _value;
+    private readonly string _value;
 
-        public FromMessageFilter(string value) => _value = value;
+    public FromMessageFilter(string value) => _value = value;
 
-        public override bool IsMatch(Message message) =>
-            string.Equals(_value, message.Author.Name, StringComparison.OrdinalIgnoreCase) ||
-            string.Equals(_value, message.Author.FullName, StringComparison.OrdinalIgnoreCase) ||
-            string.Equals(_value, message.Author.Id.ToString(), StringComparison.OrdinalIgnoreCase);
-    }
+    public override bool IsMatch(Message message) =>
+        string.Equals(_value, message.Author.Name, StringComparison.OrdinalIgnoreCase) ||
+        string.Equals(_value, message.Author.FullName, StringComparison.OrdinalIgnoreCase) ||
+        string.Equals(_value, message.Author.Id.ToString(), StringComparison.OrdinalIgnoreCase);
 }

DiscordChatExporter.Core/Exporting/Filtering/HasMessageFilter.cs

@@ -3,23 +3,23 @@ using System.Linq;
 using System.Text.RegularExpressions;
 using DiscordChatExporter.Core.Discord.Data;
 
-namespace DiscordChatExporter.Core.Exporting.Filtering
+namespace DiscordChatExporter.Core.Exporting.Filtering;
+
+internal class HasMessageFilter : MessageFilter
 {
-    internal class HasMessageFilter : MessageFilter
+    private readonly MessageContentMatchKind _kind;
+
+    public HasMessageFilter(MessageContentMatchKind kind) => _kind = kind;
+
+    public override bool IsMatch(Message message) => _kind switch
     {
-        private readonly MessageContentMatchKind _kind;
-
-        public HasMessageFilter(MessageContentMatchKind kind) => _kind = kind;
-
-        public override bool IsMatch(Message message) => _kind switch
-        {
-            MessageContentMatchKind.Link => Regex.IsMatch(message.Content, "https?://\\S*[^\\.,:;\"\'\\s]"),
-            MessageContentMatchKind.Embed => message.Embeds.Any(),
-            MessageContentMatchKind.File => message.Attachments.Any(),
-            MessageContentMatchKind.Video => message.Attachments.Any(file => file.IsVideo),
-            MessageContentMatchKind.Image => message.Attachments.Any(file => file.IsImage),
-            MessageContentMatchKind.Sound => message.Attachments.Any(file => file.IsAudio),
-            _ => throw new InvalidOperationException($"Unknown message content match kind '{_kind}'.")
-        };
-    }
+        MessageContentMatchKind.Link => Regex.IsMatch(message.Content, "https?://\\S*[^\\.,:;\"\'\\s]"),
+        MessageContentMatchKind.Embed => message.Embeds.Any(),
+        MessageContentMatchKind.File => message.Attachments.Any(),
+        MessageContentMatchKind.Video => message.Attachments.Any(file => file.IsVideo),
+        MessageContentMatchKind.Image => message.Attachments.Any(file => file.IsImage),
+        MessageContentMatchKind.Sound => message.Attachments.Any(file => file.IsAudio),
+        MessageContentMatchKind.Pin => message.IsPinned,
+        _ => throw new InvalidOperationException($"Unknown message content match kind '{_kind}'.")
+    };
 }

DiscordChatExporter.Core/Exporting/Filtering/MentionsMessageFilter.cs

@@ -2,18 +2,17 @@
 using System.Linq;
 using DiscordChatExporter.Core.Discord.Data;
 
-namespace DiscordChatExporter.Core.Exporting.Filtering
+namespace DiscordChatExporter.Core.Exporting.Filtering;
+
+internal class MentionsMessageFilter : MessageFilter
 {
-    internal class MentionsMessageFilter : MessageFilter
-    {
-        private readonly string _value;
+    private readonly string _value;
 
-        public MentionsMessageFilter(string value) => _value = value;
+    public MentionsMessageFilter(string value) => _value = value;
 
-        public override bool IsMatch(Message message) => message.MentionedUsers.Any(user =>
-            string.Equals(_value, user.Name, StringComparison.OrdinalIgnoreCase) ||
-            string.Equals(_value, user.FullName, StringComparison.OrdinalIgnoreCase) ||
-            string.Equals(_value, user.Id.ToString(), StringComparison.OrdinalIgnoreCase)
-        );
-    }
+    public override bool IsMatch(Message message) => message.MentionedUsers.Any(user =>
+        string.Equals(_value, user.Name, StringComparison.OrdinalIgnoreCase) ||
+        string.Equals(_value, user.FullName, StringComparison.OrdinalIgnoreCase) ||
+        string.Equals(_value, user.Id.ToString(), StringComparison.OrdinalIgnoreCase)
+    );
 }

DiscordChatExporter.Core/Exporting/Filtering/MessageContentMatchKind.cs

@@ -1,12 +1,12 @@
-namespace DiscordChatExporter.Core.Exporting.Filtering
+namespace DiscordChatExporter.Core.Exporting.Filtering;
+
+internal enum MessageContentMatchKind
 {
-    internal enum MessageContentMatchKind
-    {
-        Link,
-        Embed,
-        File,
-        Video,
-        Image,
-        Sound
-    }
+    Link,
+    Embed,
+    File,
+    Video,
+    Image,
+    Sound,
+    Pin
 }

DiscordChatExporter.Core/Exporting/Filtering/MessageFilter.cs

@@ -2,17 +2,16 @@
 using DiscordChatExporter.Core.Exporting.Filtering.Parsing;
 using Superpower;
 
-namespace DiscordChatExporter.Core.Exporting.Filtering
+namespace DiscordChatExporter.Core.Exporting.Filtering;
+
+public abstract partial class MessageFilter
 {
-    public abstract partial class MessageFilter
-    {
-        public abstract bool IsMatch(Message message);
-    }
+    public abstract bool IsMatch(Message message);
+}
 
-    public partial class MessageFilter
-    {
-        public static MessageFilter Null { get; } = new NullMessageFilter();
+public partial class MessageFilter
+{
+    public static MessageFilter Null { get; } = new NullMessageFilter();
 
-        public static MessageFilter Parse(string value) => FilterGrammar.Filter.Parse(value);
-    }
+    public static MessageFilter Parse(string value) => FilterGrammar.Filter.Parse(value);
 }

DiscordChatExporter.Core/Exporting/Filtering/NegatedMessageFilter.cs

@@ -1,13 +1,12 @@
 using DiscordChatExporter.Core.Discord.Data;
 
-namespace DiscordChatExporter.Core.Exporting.Filtering
+namespace DiscordChatExporter.Core.Exporting.Filtering;
+
+internal class NegatedMessageFilter : MessageFilter
 {
-    internal class NegatedMessageFilter : MessageFilter
-    {
-        private readonly MessageFilter _filter;
+    private readonly MessageFilter _filter;
 
-        public NegatedMessageFilter(MessageFilter filter) => _filter = filter;
+    public NegatedMessageFilter(MessageFilter filter) => _filter = filter;
 
-        public override bool IsMatch(Message message) => !_filter.IsMatch(message);
-    }
+    public override bool IsMatch(Message message) => !_filter.IsMatch(message);
 }