Update version

Closes #977

.github/ISSUE_TEMPLATE/config.yml

@@ -1,5 +1,8 @@
 blank_issues_enabled: false
 contact_links:
+  - name: ⚠ Feature request
+    url: https://github.com/Tyrrrz/.github/blob/master/docs/project-status.md
+    about: Sorry, but this project is in maintenance mode and no longer accepts new feature requests.
   - name: 💬 Discord server
     url: https://discord.gg/2SUWKFnHSm
     about: Chat with the project community.

.github/ISSUE_TEMPLATE/feature-request.yml

@@ -1,42 +0,0 @@
-name: ✨ Feature request
-description: Request a new feature.
-labels: [enhancement]
-
-body:
-- type: markdown
-  attributes:
-    value: |
-      🧐 **Guidelines:**
-
-      - Search through [existing issues](https://github.com/Tyrrrz/DiscordChatExporter/issues?q=is%3Aissue) first to ensure that this feature has not been requested before.
-      - Write a descriptive title for your issue. Avoid generic or vague titles such as "Some suggestions" or "Ideas for improvement".
-      - Keep your issue focused on one single problem. If you have multiple feature requests, please create separate issues for each of them.
-      - Provide as much context as possible in the details section. Include screenshots, screen recordings, links, references, or anything else you may consider relevant.
-      - If you want to ask a question instead of requesting a feature, please use [discussions](https://github.com/Tyrrrz/DiscordChatExporter/discussions/new) instead.
-
-- type: dropdown
-  attributes:
-    label: Flavor
-    description: Is this feature request related to specific flavor(s) of DiscordChatExporter? If not applicable, leave this field blank.
-    multiple: true
-    options:
-    - GUI (Graphical User Interface)
-    - CLI (Command Line Interface)
-
-- type: dropdown
-  attributes:
-    label: Export format
-    description: Is this feature request related to specific export format(s)? If not applicable, leave this field blank.
-    multiple: true
-    options:
-    - HTML
-    - TXT
-    - JSON
-    - CSV
-
-- type: textarea
-  attributes:
-    label: Details
-    description: Clear and thorough explanation of the feature you have in mind.
-  validations:
-    required: true

.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 +1,152 @@
+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:
+          dotnet-version: 7.0.x
+
+      - name: Run tests
+        # Tests need access to secrets, so we can't run them against PRs because of limited trust
+        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 }}
+
+  package:
+    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:
+          dotnet-version: 7.0.x
+
+      - 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: package
+    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>"
+            }

.gitignore

@@ -5,6 +5,7 @@
 *.sln.docstates
 .idea/
 .vs/
+.vscode/
 
 # Build results
 [Dd]ebug/

Changelog.md

@@ -1,3 +1,96 @@
+### v2.37 (08-Jan-2023)
+
+- Switched from .NET 6.0 to .NET 7.0. If running on Windows, the application should update all required prerequisites automatically. Alternatively, you can download the latest version of the runtime for your system [here](https://dotnet.microsoft.com/download/dotnet/7.0).
+- Updated rate limit handling to adjust automatically based on the response headers. This may result in exports taking longer than before on bot accounts, but it makes it less likely for Discord to throttle you. Exports with user accounts shouldn't be affected too much by this change.
+- Optimized snowflake parsing by removing unnecessary checks. (Thanks [@Kuba_Z2](https://github.com/KubaZ2))
+- [Docker] Optimized the Docker image size by using the Alpine base image and publishing a self-contained distribution. (Thanks [@Velithris](https://github.com/Zireael-N))
+- Fixed an issue where exporting a channel whose name ends with a dot would fail on Windows with default output path. The dots are now trimmed in file and directory names to match the behavior of Windows Explorer.
+
+### v2.36.4 (29-Oct-2022)
+
+- Changed all mentions of "media" in the context of "download media" or "reuse media" to "assets". CLI options will retain their existing names for backwards compatibility.
+- [HTML] Fixed an issue which prevented emoji used inside message content from being downloaded when "download assets" option is enabled. (Thanks [@Roberto Blázquez](https://github.com/xBaank))
+
+### v2.36.3 (21-Oct-2022)
+
+- [GUI] Fixed an issue where opening a dialog did not prevent user interactions with background UI elements using keyboard. This sometimes caused the application to crash in weird ways.
+- [Docker] Fixed an issue where DiscordChatExporter was running as root inside the container, making the exported files inaccessible to the host. (Thanks [@Benjamin Just](https://github.com/BamButz))
+
+### v2.36.2 (08-Oct-2022)
+
+- Removed the message content intent check because the heuristics turned out to be not reliable enough.
+- Fixed an issue where the runtime manifest included the wrong target runtime version. This resulted in the application failing to launch for some users when upgrading from earlier versions.
+
+### v2.36.1 (24-Sep-2022)
+
+- Added a check which will trigger an error if the provided bot account does not have the message content intent enabled. Note, however, that this check is based on heuristics which may result in false negatives.
+- Fixed an issue where certain transient HTTP errors were not retried.
+- Fixed an issue which caused the export process to fail with the `IndexOutOfRangeException` exception on certain automated messages.
+- Fixed an issue which caused the export process to fail on unrecognized embed types.
+
+### v2.36 (16-Sep-2022)
+
+- [HTML] Added support for rendering GIFV embeds. They will now render as videos that automatically play when you hover your mouse over them. (Thanks [@gan-of-culture](https://github.com/gan-of-culture))
+- [HTML] Added support for rendering system notification messages, such as when a user joins a server or when a messages gets pinned. Previously, such messages were rendered as regular text messages, but now they look similar to how they're presented in the Discord client. (Thanks [@gan-of-culture](https://github.com/gan-of-culture))
+- [CLI] Improved the wording of the error message that's shown when exporting multiple channels and the provided output path is ambiguous. It now mentions that you can resolve the ambiguity by adding a slash at the end of the path.
+
+### v2.35.2 (08-Sep-2022)
+
+- Updated usage guide to mention the need to enable "Message Content Intent" to use a bot as a medium for exporting messages.
+- [CLI] Fixed an issue where passing an existing directory as the output path failed when exporting multiple channels (for example, when running `exportdm`). An ambiguous output path will now always be treated as a directory path if that directory already exists. If it doesn't exist, it will be treated as a file path, matching the previous behavior.
+
+### v2.35.1 (26-Aug-2022)
+
+- Added `~` character as an alias for `-` when negating a message filter. This should make it easier to use negated filters from CLI where the dash character already has other meanings.
+- Extended retry logic to encompass all server-side errors from Discord API, instead of only `500 Internal Server Error`.
+- [CLI] Attempt to export multiple channels will now fail if provided with an output path that is neither a directory, nor a file name template. Previously, this resulted in all channels being exported to the same file, overwriting each other.
+- Fixed an issue where a text message filter didn't work if it started with a character that's also the first character in one of the named filters (e.g. `from` or `mentions`).
+- Fixed an issue where a text message filter didn't work correctly if it was enclosed in parentheses.
+- Fixed an issue where categories were displayed alongside regular channels in the channel list, both in GUI and in CLI (when using the `guild` command).
+- [CLI] Fixed an issue where an output path starting with a tilde on Linux was not expanded properly into a full path. (Thanks [@TSRBerry](https://github.com/TSRBerry))
+
+### 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.
+- [Docker] Changed internal working directory from `/app/out` to `/out`. This was an unintended breaking change. Please update your volume binding configuration from `-v /path/on/machine:/app/out` to `-v /path/on/machine:/out`.
+
+### 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.
@@ -45,7 +138,7 @@
 
 - [HTML] Added special casing for Spotify track embeds to render them directly using an embedded player.
 - [HTML] Added special casing for plain image embeds to render them like image attachments.
-- [HTML] Added tooltip text for unix timestamp markers which shows the full date represented by the timestamp, regardless of configured date format. 
+- [HTML] Added tooltip text for unix timestamp markers which shows the full date represented by the timestamp, regardless of configured date format.
 - [HTML] Updated the fallback text shown when the referenced message could not be loaded to make it more explicit.
 - [HTML] Updated styling of quoted text in markdown to more closely resemble how it looks in Discord.
 - [HTML] Fixed an issue where some file formats were not correctly recognized as image or video attachments, which affected how they were rendered.
@@ -72,7 +165,7 @@
 - [HTML] Added special casing for YouTube video embeds to render them directly using an embedded player. (Thanks [@quentinmay](https://github.com/quentinmay))
 - [HTML] Added support for rendering standard emoji by code. Such emoji may sometimes be found in messages sent by bots or through webhooks. (Thanks [@CanePlayz](https://github.com/CanePlayz) and [@Lucas LaBuff](https://github.com/96-LB))
 - [HTML] Changed tooltips on standard emoji to show emoji code instead of their raw string representations. (Thanks [@CanePlayz](https://github.com/CanePlayz) and [@Lucas LaBuff](https://github.com/96-LB))
-- [HTML] Added tooltips on individual messages to show when those messages were sent. 
+- [HTML] Added tooltips on individual messages to show when those messages were sent.
 - [HTML] Updated colors and minor styling elements to match Discord's new style direction after rebranding.
 - [HTML] Updated Twemoji URLs to use SVG image variants for better rendering quality.
 - [HTML] Changed user avatar URLs to include predetermined size query parameter for better rendering quality.
@@ -168,7 +261,7 @@
 - Added a new option that enables self-contained exports for all output formats. You can turn it on in the export setup dialog in GUI or using the `--media` option in CLI. When using this, the application will additionally download any media content directly referenced from the exported file instead of linking back to Discord CDN. The files which are downloaded include: guild icons, user avatars, attachments, embedded images, reaction emoji. Note that only files which are actually referenced by the export are downloaded, which means that, for example, user avatars will not be downloaded when using plain text export format. This option is not meant to enable complete offline viewing for HTML exports, but rather to make it easier to archive media content that may eventually get deleted from Discord servers. Also keep in mind that this option may make the export drastically slower and the total file size larger.
 - Changed "discordapp.com" to "discord.com" where applicable as Discord is migrating to a new domain. CDN will remain on "cdn.discordapp.com" for the foreseeable future.
 
-Note that all existing and current HTML exports will likely not render accurately because Discord enabled CORS for their font resources, which prevents them from loading locally. Please refer to [issue #322](https://github.com/Tyrrrz/DiscordChatExporter/issues/322) for discussion on this topic. 
+Note that all existing and current HTML exports will likely not render accurately because Discord enabled CORS for their font resources, which prevents them from loading locally. Please refer to [issue #322](https://github.com/Tyrrrz/DiscordChatExporter/issues/322) for discussion on this topic.
 
 ### v2.20 (27-Apr-2020)
 

Directory.Build.props

@@ -1,8 +1,8 @@
 <Project>
 
   <PropertyGroup>
-    <TargetFramework>net6.0</TargetFramework>
-    <Version>2.33.1</Version>
+    <TargetFramework>net7.0</TargetFramework>
+    <Version>2.37</Version>
     <Company>Tyrrrz</Company>
     <Copyright>Copyright (c) Oleksii Holub</Copyright>
     <LangVersion>preview</LangVersion>

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="6.5.1" />
-    <PackageReference Include="GitHubActionsTestLogger" Version="1.3.0" PrivateAssets="all" />
+    <PackageReference Include="AngleSharp" Version="0.17.1" />
+    <PackageReference Include="FluentAssertions" Version="6.8.0" />
+    <PackageReference Include="GitHubActionsTestLogger" Version="2.0.1" PrivateAssets="all" />
     <PackageReference Include="JsonExtensions" Version="1.2.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.1.0" />
-    <PackageReference Include="coverlet.msbuild" Version="3.1.2" PrivateAssets="all" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.4.0" />
     <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" Version="2.4.2" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.5" PrivateAssets="all" />
+    <PackageReference Include="coverlet.collector" Version="3.2.0" PrivateAssets="all" />
   </ItemGroup>
 
   <ItemGroup>

DiscordChatExporter.Cli.Tests/Fixtures/ExportWrapperFixture.cs

@@ -46,58 +46,46 @@ public class ExportWrapperFixture : IDisposable
         return await File.ReadAllTextAsync(filePath);
     }
 
-    public async ValueTask<IHtmlDocument> ExportAsHtmlAsync(Snowflake channelId)
-    {
-        var data = await ExportAsync(channelId, ExportFormat.HtmlDark);
-        return Html.Parse(data);
-    }
+    public async ValueTask<IHtmlDocument> ExportAsHtmlAsync(Snowflake channelId) => Html.Parse(
+        await ExportAsync(channelId, ExportFormat.HtmlDark)
+    );
 
-    public async ValueTask<JsonElement> ExportAsJsonAsync(Snowflake channelId)
-    {
-        var data = await ExportAsync(channelId, ExportFormat.Json);
-        return Json.Parse(data);
-    }
+    public async ValueTask<JsonElement> ExportAsJsonAsync(Snowflake channelId) => Json.Parse(
+        await ExportAsync(channelId, ExportFormat.Json)
+    );
 
-    public async ValueTask<string> ExportAsPlainTextAsync(Snowflake channelId)
-    {
-        var data = await ExportAsync(channelId, ExportFormat.PlainText);
-        return data;
-    }
+    public async ValueTask<string> ExportAsPlainTextAsync(Snowflake channelId) =>
+        await ExportAsync(channelId, ExportFormat.PlainText);
 
-    public async ValueTask<string> ExportAsCsvAsync(Snowflake channelId)
-    {
-        var data = await ExportAsync(channelId, ExportFormat.Csv);
-        return data;
-    }
+    public async ValueTask<string> ExportAsCsvAsync(Snowflake channelId) =>
+        await ExportAsync(channelId, ExportFormat.Csv);
 
-    public async ValueTask<IReadOnlyList<IElement>> GetMessagesAsHtmlAsync(Snowflake channelId)
-    {
-        var document = await ExportAsHtmlAsync(channelId);
-        return document.QuerySelectorAll("[data-message-id]").ToArray();
-    }
+    public async ValueTask<IReadOnlyList<IElement>> GetMessagesAsHtmlAsync(Snowflake channelId) =>
+        (await ExportAsHtmlAsync(channelId))
+        .QuerySelectorAll("[data-message-id]")
+        .ToArray();
 
-    public async ValueTask<IReadOnlyList<JsonElement>> GetMessagesAsJsonAsync(Snowflake channelId)
-    {
-        var document = await ExportAsJsonAsync(channelId);
-        return document.GetProperty("messages").EnumerateArray().ToArray();
-    }
+    public async ValueTask<IReadOnlyList<JsonElement>> GetMessagesAsJsonAsync(Snowflake channelId) =>
+        (await ExportAsJsonAsync(channelId))
+        .GetProperty("messages")
+        .EnumerateArray()
+        .ToArray();
 
     public async ValueTask<IElement> GetMessageAsHtmlAsync(Snowflake channelId, Snowflake messageId)
     {
-        var messages = await GetMessagesAsHtmlAsync(channelId);
-
-        var message = messages.SingleOrDefault(e =>
-            string.Equals(
-                e.GetAttribute("data-message-id"),
-                messageId.ToString(),
-                StringComparison.OrdinalIgnoreCase
-            )
-        );
+        var message = (await GetMessagesAsHtmlAsync(channelId))
+            .SingleOrDefault(e =>
+                string.Equals(
+                    e.GetAttribute("data-message-id"),
+                    messageId.ToString(),
+                    StringComparison.OrdinalIgnoreCase
+                )
+            );
 
         if (message is null)
         {
             throw new InvalidOperationException(
-                $"Message '{messageId}' does not exist in export of channel '{channelId}'."
+                $"Message '{messageId}' does not exist in the export of channel '{channelId}'."
             );
         }
 
@@ -106,20 +94,19 @@ public class ExportWrapperFixture : IDisposable
 
     public async ValueTask<JsonElement> GetMessageAsJsonAsync(Snowflake channelId, Snowflake messageId)
     {
-        var messages = await GetMessagesAsJsonAsync(channelId);
-
-        var message = messages.FirstOrDefault(j =>
-            string.Equals(
-                j.GetProperty("id").GetString(),
-                messageId.ToString(),
-                StringComparison.OrdinalIgnoreCase
-            )
-        );
+        var message = (await GetMessagesAsJsonAsync(channelId))
+            .SingleOrDefault(j =>
+                string.Equals(
+                    j.GetProperty("id").GetString(),
+                    messageId.ToString(),
+                    StringComparison.OrdinalIgnoreCase
+                )
+            );
 
         if (message.ValueKind == JsonValueKind.Undefined)
         {
             throw new InvalidOperationException(
-                $"Message '{messageId}' does not exist in export of channel '{channelId}'."
+                $"Message '{messageId}' does not exist in the export of channel '{channelId}'."
             );
         }
 

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

@@ -6,13 +6,20 @@ using Xunit;
 
 namespace DiscordChatExporter.Cli.Tests.Specs.CsvWriting;
 
-public record ContentSpecs(ExportWrapperFixture ExportWrapper) : IClassFixture<ExportWrapperFixture>
+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);
+        var document = await _exportWrapper.ExportAsCsvAsync(ChannelIds.DateRangeTestCases);
 
         // Assert
         document.Should().ContainAll(

DiscordChatExporter.Cli.Tests/Specs/DateRangeSpecs.cs

@@ -15,14 +15,21 @@ using Xunit;
 
 namespace DiscordChatExporter.Cli.Tests.Specs;
 
-public record DateRangeSpecs(TempOutputFixture TempOutput) : IClassFixture<TempOutputFixture>
+public class DateRangeSpecs : IClassFixture<TempOutputFixture>
 {
+    private readonly TempOutputFixture _tempOutput;
+
+    public DateRangeSpecs(TempOutputFixture tempOutput)
+    {
+        _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();
+        var filePath = _tempOutput.GetTempFilePath();
 
         // Act
         await new ExportChannelsCommand
@@ -34,16 +41,14 @@ public record DateRangeSpecs(TempOutputFixture TempOutput) : IClassFixture<TempO
             After = Snowflake.FromDate(after)
         }.ExecuteAsync(new FakeConsole());
 
-        var data = await File.ReadAllTextAsync(filePath);
-        var document = Json.Parse(data);
-
-        var timestamps = document
+        // Assert
+        var timestamps = Json
+            .Parse(await File.ReadAllTextAsync(filePath))
             .GetProperty("messages")
             .EnumerateArray()
             .Select(j => j.GetProperty("timestamp").GetDateTimeOffset())
             .ToArray();
 
-        // Assert
         timestamps.All(t => t > after).Should().BeTrue();
 
         timestamps.Should().BeEquivalentTo(new[]
@@ -68,7 +73,7 @@ public record DateRangeSpecs(TempOutputFixture TempOutput) : IClassFixture<TempO
     {
         // Arrange
         var before = new DateTimeOffset(2021, 07, 24, 0, 0, 0, TimeSpan.Zero);
-        var filePath = TempOutput.GetTempFilePath();
+        var filePath = _tempOutput.GetTempFilePath();
 
         // Act
         await new ExportChannelsCommand
@@ -80,16 +85,14 @@ public record DateRangeSpecs(TempOutputFixture TempOutput) : IClassFixture<TempO
             Before = Snowflake.FromDate(before)
         }.ExecuteAsync(new FakeConsole());
 
-        var data = await File.ReadAllTextAsync(filePath);
-        var document = Json.Parse(data);
-
-        var timestamps = document
+        // 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).Should().BeTrue();
 
         timestamps.Should().BeEquivalentTo(new[]
@@ -113,7 +116,7 @@ public record DateRangeSpecs(TempOutputFixture TempOutput) : IClassFixture<TempO
         // 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();
+        var filePath = _tempOutput.GetTempFilePath();
 
         // Act
         await new ExportChannelsCommand
@@ -126,16 +129,14 @@ public record DateRangeSpecs(TempOutputFixture TempOutput) : IClassFixture<TempO
             After = Snowflake.FromDate(after)
         }.ExecuteAsync(new FakeConsole());
 
-        var data = await File.ReadAllTextAsync(filePath);
-        var document = Json.Parse(data);
-
-        var timestamps = document
+        // 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.Should().BeEquivalentTo(new[]

DiscordChatExporter.Cli.Tests/Specs/FilterSpecs.cs

@@ -14,13 +14,20 @@ using Xunit;
 
 namespace DiscordChatExporter.Cli.Tests.Specs;
 
-public record FilterSpecs(TempOutputFixture TempOutput) : IClassFixture<TempOutputFixture>
+public class FilterSpecs : IClassFixture<TempOutputFixture>
 {
+    private readonly TempOutputFixture _tempOutput;
+
+    public FilterSpecs(TempOutputFixture tempOutput)
+    {
+        _tempOutput = tempOutput;
+    }
+
     [Fact]
     public async Task Messages_filtered_by_text_only_include_messages_that_contain_that_text()
     {
         // Arrange
-        var filePath = TempOutput.GetTempFilePath();
+        var filePath = _tempOutput.GetTempFilePath();
 
         // Act
         await new ExportChannelsCommand
@@ -32,11 +39,9 @@ public record FilterSpecs(TempOutputFixture TempOutput) : IClassFixture<TempOutp
             MessageFilter = MessageFilter.Parse("some text")
         }.ExecuteAsync(new FakeConsole());
 
-        var data = await File.ReadAllTextAsync(filePath);
-        var document = Json.Parse(data);
-
         // Assert
-        document
+        Json
+            .Parse(await File.ReadAllTextAsync(filePath))
             .GetProperty("messages")
             .EnumerateArray()
             .Select(j => j.GetProperty("content").GetString())
@@ -48,7 +53,7 @@ public record FilterSpecs(TempOutputFixture TempOutput) : IClassFixture<TempOutp
     public async Task Messages_filtered_by_author_only_include_messages_sent_by_that_author()
     {
         // Arrange
-        var filePath = TempOutput.GetTempFilePath();
+        var filePath = _tempOutput.GetTempFilePath();
 
         // Act
         await new ExportChannelsCommand
@@ -60,11 +65,9 @@ public record FilterSpecs(TempOutputFixture TempOutput) : IClassFixture<TempOutp
             MessageFilter = MessageFilter.Parse("from:Tyrrrz")
         }.ExecuteAsync(new FakeConsole());
 
-        var data = await File.ReadAllTextAsync(filePath);
-        var document = Json.Parse(data);
-
         // Assert
-        document
+        Json
+            .Parse(await File.ReadAllTextAsync(filePath))
             .GetProperty("messages")
             .EnumerateArray()
             .Select(j => j.GetProperty("author").GetProperty("name").GetString())
@@ -76,7 +79,7 @@ public record FilterSpecs(TempOutputFixture TempOutput) : IClassFixture<TempOutp
     public async Task Messages_filtered_by_content_only_include_messages_that_have_that_content()
     {
         // Arrange
-        var filePath = TempOutput.GetTempFilePath();
+        var filePath = _tempOutput.GetTempFilePath();
 
         // Act
         await new ExportChannelsCommand
@@ -88,11 +91,9 @@ public record FilterSpecs(TempOutputFixture TempOutput) : IClassFixture<TempOutp
             MessageFilter = MessageFilter.Parse("has:image")
         }.ExecuteAsync(new FakeConsole());
 
-        var data = await File.ReadAllTextAsync(filePath);
-        var document = Json.Parse(data);
-
         // Assert
-        document
+        Json
+            .Parse(await File.ReadAllTextAsync(filePath))
             .GetProperty("messages")
             .EnumerateArray()
             .Select(j => j.GetProperty("content").GetString())
@@ -100,11 +101,37 @@ public record FilterSpecs(TempOutputFixture TempOutput) : IClassFixture<TempOutp
             .ContainSingle("This has image");
     }
 
+    [Fact]
+    public async Task Messages_filtered_by_pin_only_include_messages_that_have_been_pinned()
+    {
+        // Arrange
+        var filePath = _tempOutput.GetTempFilePath();
+
+        // Act
+        await new ExportChannelsCommand
+        {
+            Token = Secrets.DiscordToken,
+            ChannelIds = new[] { ChannelIds.FilterTestCases },
+            ExportFormat = ExportFormat.Json,
+            OutputPath = filePath,
+            MessageFilter = MessageFilter.Parse("has:pin")
+        }.ExecuteAsync(new FakeConsole());
+
+        // Assert
+        Json
+            .Parse(await File.ReadAllTextAsync(filePath))
+            .GetProperty("messages")
+            .EnumerateArray()
+            .Select(j => j.GetProperty("content").GetString())
+            .Should()
+            .ContainSingle("This is pinned");
+    }
+
     [Fact]
     public async Task Messages_filtered_by_mention_only_include_messages_that_have_that_mention()
     {
         // Arrange
-        var filePath = TempOutput.GetTempFilePath();
+        var filePath = _tempOutput.GetTempFilePath();
 
         // Act
         await new ExportChannelsCommand
@@ -116,11 +143,9 @@ public record FilterSpecs(TempOutputFixture TempOutput) : IClassFixture<TempOutp
             MessageFilter = MessageFilter.Parse("mentions:Tyrrrz")
         }.ExecuteAsync(new FakeConsole());
 
-        var data = await File.ReadAllTextAsync(filePath);
-        var document = Json.Parse(data);
-
         // Assert
-        document
+        Json
+            .Parse(await File.ReadAllTextAsync(filePath))
             .GetProperty("messages")
             .EnumerateArray()
             .Select(j => j.GetProperty("content").GetString())

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;
@@ -8,19 +9,24 @@ using Xunit;
 
 namespace DiscordChatExporter.Cli.Tests.Specs.HtmlWriting;
 
-public record AttachmentSpecs(ExportWrapperFixture ExportWrapper) : IClassFixture<ExportWrapperFixture>
+public class AttachmentSpecs : IClassFixture<ExportWrapperFixture>
 {
+    private readonly ExportWrapperFixture _exportWrapper;
+
+    public AttachmentSpecs(ExportWrapperFixture exportWrapper)
+    {
+        _exportWrapper = exportWrapper;
+    }
+
     [Fact]
     public async Task Message_with_a_generic_attachment_is_rendered_correctly()
     {
         // Act
-        var message = await ExportWrapper.GetMessageAsHtmlAsync(
+        var message = await _exportWrapper.GetMessageAsHtmlAsync(
             ChannelIds.AttachmentTestCases,
             Snowflake.Parse("885587844989612074")
         );
 
-        var fileUrl = message.QuerySelector("a")?.GetAttribute("href");
-
         // Assert
         message.Text().Should().ContainAll(
             "Generic file attachment",
@@ -28,45 +34,52 @@ public record AttachmentSpecs(ExportWrapperFixture ExportWrapper) : IClassFixtur
             "11 bytes"
         );
 
-        fileUrl.Should().StartWithEquivalentOf(
-            "https://cdn.discordapp.com/attachments/885587741654536192/885587844964417596/Test.txt"
-        );
+        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(
+        var message = await _exportWrapper.GetMessageAsHtmlAsync(
             ChannelIds.AttachmentTestCases,
             Snowflake.Parse("885654862656843786")
         );
 
-        var imageUrl = message.QuerySelector("img")?.GetAttribute("src");
-
         // Assert
         message.Text().Should().Contain("Image attachment");
 
-        imageUrl.Should().StartWithEquivalentOf(
-            "https://cdn.discordapp.com/attachments/885587741654536192/885654862430359613/bird-thumbnail.png"
-        );
+        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()
     {
+        // https://github.com/Tyrrrz/DiscordChatExporter/issues/333
+
         // Act
-        var message = await ExportWrapper.GetMessageAsHtmlAsync(
+        var message = await _exportWrapper.GetMessageAsHtmlAsync(
             ChannelIds.AttachmentTestCases,
             Snowflake.Parse("885655761919836171")
         );
 
-        var videoUrl = message.QuerySelector("video source")?.GetAttribute("src");
-
         // Assert
         message.Text().Should().Contain("Video attachment");
 
-        videoUrl.Should().StartWithEquivalentOf(
+        var videoUrl = message.QuerySelector("video source")?.GetAttribute("src");
+        videoUrl.Should().Be(
             "https://cdn.discordapp.com/attachments/885587741654536192/885655761512968233/file_example_MP4_640_3MG.mp4"
         );
     }
@@ -74,18 +87,19 @@ public record AttachmentSpecs(ExportWrapperFixture ExportWrapper) : IClassFixtur
     [Fact]
     public async Task Message_with_an_audio_attachment_is_rendered_correctly()
     {
+        // https://github.com/Tyrrrz/DiscordChatExporter/issues/333
+
         // Act
-        var message = await ExportWrapper.GetMessageAsHtmlAsync(
+        var message = await _exportWrapper.GetMessageAsHtmlAsync(
             ChannelIds.AttachmentTestCases,
             Snowflake.Parse("885656175620808734")
         );
 
-        var audioUrl = message.QuerySelector("audio source")?.GetAttribute("src");
-
         // Assert
         message.Text().Should().Contain("Audio attachment");
 
-        audioUrl.Should().StartWithEquivalentOf(
+        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

@@ -8,13 +8,20 @@ using Xunit;
 
 namespace DiscordChatExporter.Cli.Tests.Specs.HtmlWriting;
 
-public record ContentSpecs(ExportWrapperFixture ExportWrapper) : IClassFixture<ExportWrapperFixture>
+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 messages = await ExportWrapper.GetMessagesAsHtmlAsync(ChannelIds.DateRangeTestCases);
+        var messages = await _exportWrapper.GetMessagesAsHtmlAsync(ChannelIds.DateRangeTestCases);
 
         // Assert
         messages.Select(e => e.GetAttribute("data-message-id")).Should().Equal(
@@ -28,7 +35,7 @@ public record ContentSpecs(ExportWrapperFixture ExportWrapper) : IClassFixture<E
             "885169254029213696"
         );
 
-        messages.Select(e => e.QuerySelector(".chatlog__content")?.Text().Trim()).Should().Equal(
+        messages.SelectMany(e => e.Text()).Should().ContainInOrder(
             "Hello world",
             "Goodbye world",
             "Foo bar",

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;
@@ -8,13 +9,20 @@ using Xunit;
 
 namespace DiscordChatExporter.Cli.Tests.Specs.HtmlWriting;
 
-public record EmbedSpecs(ExportWrapperFixture ExportWrapper) : IClassFixture<ExportWrapperFixture>
+public class EmbedSpecs : IClassFixture<ExportWrapperFixture>
 {
+    private readonly ExportWrapperFixture _exportWrapper;
+
+    public EmbedSpecs(ExportWrapperFixture exportWrapper)
+    {
+        _exportWrapper = exportWrapper;
+    }
+
     [Fact]
     public async Task Message_with_an_embed_is_rendered_correctly()
     {
         // Act
-        var message = await ExportWrapper.GetMessageAsHtmlAsync(
+        var message = await _exportWrapper.GetMessageAsHtmlAsync(
             ChannelIds.EmbedTestCases,
             Snowflake.Parse("866769910729146400")
         );
@@ -32,32 +40,128 @@ public record EmbedSpecs(ExportWrapperFixture ExportWrapper) : IClassFixture<Exp
     }
 
     [Fact]
-    public async Task Message_with_a_Spotify_track_is_rendered_using_an_iframe()
+    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"))
+            .Where(s => s?.EndsWith("i.redd.it/f8w05ja8s4e61.png") ?? false)
+            .Should()
+            .ContainSingle();
+    }
+
+    [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_gifv_link_is_rendered_with_a_video_embed()
     {
         // Act
-        var message = await ExportWrapper.GetMessageAsHtmlAsync(
+        var message = await _exportWrapper.GetMessageAsHtmlAsync(
+            ChannelIds.EmbedTestCases,
+            Snowflake.Parse("1019234520349814794")
+        );
+
+        // Assert
+        message
+            .QuerySelectorAll("source")
+            .Select(e => e.GetAttribute("src"))
+            .Where(s => s?.EndsWith("media.tenor.com/DDAJeW6BQKkAAAPo/tooncasm-test-copy.mp4") ?? false)
+            .Should()
+            .ContainSingle();
+    }
+
+    [Fact]
+    public async Task Message_containing_a_gifv_link_and_nothing_else_is_rendered_without_text_content()
+    {
+        // Act
+        var message = await _exportWrapper.GetMessageAsHtmlAsync(
+            ChannelIds.EmbedTestCases,
+            Snowflake.Parse("1019234520349814794")
+        );
+
+        // 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")
         );
 
-        var iframeSrc = message.QuerySelector("iframe")?.GetAttribute("src");
-
         // Assert
-        iframeSrc.Should().StartWithEquivalentOf("https://open.spotify.com/embed/track/1LHZMWefF9502NPfArRfvP");
+        var iframeUrl = message.QuerySelector("iframe")?.GetAttribute("src");
+        iframeUrl.Should().Be("https://open.spotify.com/embed/track/1LHZMWefF9502NPfArRfvP");
     }
 
     [Fact]
-    public async Task Message_with_a_YouTube_video_is_rendered_using_an_iframe()
+    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(
+        var message = await _exportWrapper.GetMessageAsHtmlAsync(
             ChannelIds.EmbedTestCases,
             Snowflake.Parse("866472508588294165")
         );
 
-        var iframeSrc = message.QuerySelector("iframe")?.GetAttribute("src");
+        // 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
-        iframeSrc.Should().StartWithEquivalentOf("https://www.youtube.com/embed/qOWW4OlgbvE");
+        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"
+            );
+
+        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

@@ -8,19 +8,26 @@ using Xunit;
 
 namespace DiscordChatExporter.Cli.Tests.Specs.HtmlWriting;
 
-public record MentionSpecs(ExportWrapperFixture ExportWrapper) : IClassFixture<ExportWrapperFixture>
+public class MentionSpecs : IClassFixture<ExportWrapperFixture>
 {
+    private readonly ExportWrapperFixture _exportWrapper;
+
+    public MentionSpecs(ExportWrapperFixture exportWrapper)
+    {
+        _exportWrapper = exportWrapper;
+    }
+
     [Fact]
     public async Task User_mention_is_rendered_correctly()
     {
         // Act
-        var message = await ExportWrapper.GetMessageAsHtmlAsync(
+        var message = await _exportWrapper.GetMessageAsHtmlAsync(
             ChannelIds.MentionTestCases,
             Snowflake.Parse("866458840245076028")
         );
 
         // Assert
-        message.Text().Trim().Should().Be("User mention: @Tyrrrz");
+        message.Text().Should().Contain("User mention: @Tyrrrz");
         message.InnerHtml.Should().Contain("Tyrrrz#5447");
     }
 
@@ -28,38 +35,38 @@ public record MentionSpecs(ExportWrapperFixture ExportWrapper) : IClassFixture<E
     public async Task Text_channel_mention_is_rendered_correctly()
     {
         // Act
-        var message = await ExportWrapper.GetMessageAsHtmlAsync(
+        var message = await _exportWrapper.GetMessageAsHtmlAsync(
             ChannelIds.MentionTestCases,
             Snowflake.Parse("866459040480624680")
         );
 
         // Assert
-        message.Text().Trim().Should().Be("Text channel mention: #mention-tests");
+        message.Text().Should().Contain("Text channel mention: #mention-tests");
     }
 
     [Fact]
     public async Task Voice_channel_mention_is_rendered_correctly()
     {
         // Act
-        var message = await ExportWrapper.GetMessageAsHtmlAsync(
+        var message = await _exportWrapper.GetMessageAsHtmlAsync(
             ChannelIds.MentionTestCases,
             Snowflake.Parse("866459175462633503")
         );
 
         // Assert
-        message.Text().Trim().Should().Be("Voice channel mention: 🔊chaos-vc");
+        message.Text().Should().Contain("Voice channel mention: 🔊chaos-vc");
     }
 
     [Fact]
     public async Task Role_mention_is_rendered_correctly()
     {
         // Act
-        var message = await ExportWrapper.GetMessageAsHtmlAsync(
+        var message = await _exportWrapper.GetMessageAsHtmlAsync(
             ChannelIds.MentionTestCases,
             Snowflake.Parse("866459254693429258")
         );
 
         // Assert
-        message.Text().Trim().Should().Be("Role mention: @Role 1");
+        message.Text().Should().Contain("Role mention: @Role 1");
     }
 }

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

@@ -8,49 +8,60 @@ using Xunit;
 
 namespace DiscordChatExporter.Cli.Tests.Specs.HtmlWriting;
 
-public record ReplySpecs(ExportWrapperFixture ExportWrapper) : IClassFixture<ExportWrapperFixture>
+public class ReplySpecs : IClassFixture<ExportWrapperFixture>
 {
+    private readonly ExportWrapperFixture _exportWrapper;
+
+    public ReplySpecs(ExportWrapperFixture exportWrapper)
+    {
+        _exportWrapper = exportWrapper;
+    }
+
     [Fact]
     public async Task Reply_to_a_normal_message_is_rendered_correctly()
     {
         // Act
-        var message = await ExportWrapper.GetMessageAsHtmlAsync(
+        var message = await _exportWrapper.GetMessageAsHtmlAsync(
             ChannelIds.ReplyTestCases,
             Snowflake.Parse("866460738239725598")
         );
 
         // Assert
-        message.Text().Trim().Should().Be("reply to original");
-        message.QuerySelector(".chatlog__reference-link")?.Text().Trim().Should().Be("original");
+        message.Text().Should().Contain("reply to original");
+        message.QuerySelector(".chatlog__reference-link")?.Text().Should().Contain("original");
     }
 
     [Fact]
     public async Task Reply_to_a_deleted_message_is_rendered_correctly()
     {
+        // https://github.com/Tyrrrz/DiscordChatExporter/issues/645
+
         // Act
-        var message = await ExportWrapper.GetMessageAsHtmlAsync(
+        var message = await _exportWrapper.GetMessageAsHtmlAsync(
             ChannelIds.ReplyTestCases,
             Snowflake.Parse("866460975388819486")
         );
 
         // 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.");
+        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_a_empty_message_with_attachment_is_rendered_correctly()
+    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(
+        var message = await _exportWrapper.GetMessageAsHtmlAsync(
             ChannelIds.ReplyTestCases,
             Snowflake.Parse("866462470335627294")
         );
 
         // Assert
-        message.Text().Trim().Should().Be("reply to attachment");
-        message.QuerySelector(".chatlog__reference-link")?.Text().Trim().Should()
-            .Be("Click to see attachment 🖼️");
+        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

@@ -7,39 +7,40 @@ using Xunit;
 
 namespace DiscordChatExporter.Cli.Tests.Specs.HtmlWriting;
 
-public record StickerSpecs(ExportWrapperFixture ExportWrapper) : IClassFixture<ExportWrapperFixture>
+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(
+        var message = await _exportWrapper.GetMessageAsHtmlAsync(
             ChannelIds.StickerTestCases,
             Snowflake.Parse("939670623158943754")
         );
 
-        var container = message.QuerySelector("[title='rock']");
-        var sourceUrl = container?.QuerySelector("img")?.GetAttribute("src");
-
         // Assert
-        container.Should().NotBeNull();
-        sourceUrl.Should().Be("https://discord.com/stickers/904215665597120572.png");
+        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(
+        var message = await _exportWrapper.GetMessageAsHtmlAsync(
             ChannelIds.StickerTestCases,
             Snowflake.Parse("939670526517997590")
         );
 
-        var container = message.QuerySelector("[title='Yikes']");
-        var sourceUrl = container?.QuerySelector("div[data-source]")?.GetAttribute("data-source");
-
         // Assert
-        container.Should().NotBeNull();
-        sourceUrl.Should().Be("https://discord.com/stickers/816087132447178774.json");
+        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

@@ -8,24 +8,30 @@ using Xunit;
 
 namespace DiscordChatExporter.Cli.Tests.Specs.JsonWriting;
 
-public record AttachmentSpecs(ExportWrapperFixture ExportWrapper) : IClassFixture<ExportWrapperFixture>
+public class AttachmentSpecs : IClassFixture<ExportWrapperFixture>
 {
+    private readonly ExportWrapperFixture _exportWrapper;
+
+    public AttachmentSpecs(ExportWrapperFixture exportWrapper)
+    {
+        _exportWrapper = exportWrapper;
+    }
+
     [Fact]
     public async Task Message_with_a_generic_attachment_is_rendered_correctly()
     {
         // Act
-        var message = await ExportWrapper.GetMessageAsJsonAsync(
+        var message = await _exportWrapper.GetMessageAsJsonAsync(
             ChannelIds.AttachmentTestCases,
             Snowflake.Parse("885587844989612074")
         );
 
-        var attachments = message.GetProperty("attachments").EnumerateArray().ToArray();
-
         // Assert
         message.GetProperty("content").GetString().Should().Be("Generic file attachment");
 
+        var attachments = message.GetProperty("attachments").EnumerateArray().ToArray();
         attachments.Should().HaveCount(1);
-        attachments.Single().GetProperty("url").GetString().Should().StartWithEquivalentOf(
+        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");
@@ -36,18 +42,17 @@ public record AttachmentSpecs(ExportWrapperFixture ExportWrapper) : IClassFixtur
     public async Task Message_with_an_image_attachment_is_rendered_correctly()
     {
         // Act
-        var message = await ExportWrapper.GetMessageAsJsonAsync(
+        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");
 
+        var attachments = message.GetProperty("attachments").EnumerateArray().ToArray();
         attachments.Should().HaveCount(1);
-        attachments.Single().GetProperty("url").GetString().Should().StartWithEquivalentOf(
+        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");
@@ -58,18 +63,17 @@ public record AttachmentSpecs(ExportWrapperFixture ExportWrapper) : IClassFixtur
     public async Task Message_with_a_video_attachment_is_rendered_correctly()
     {
         // Act
-        var message = await ExportWrapper.GetMessageAsJsonAsync(
+        var message = await _exportWrapper.GetMessageAsJsonAsync(
             ChannelIds.AttachmentTestCases,
             Snowflake.Parse("885655761919836171")
         );
 
-        var attachments = message.GetProperty("attachments").EnumerateArray().ToArray();
-
         // Assert
         message.GetProperty("content").GetString().Should().Be("Video attachment");
 
+        var attachments = message.GetProperty("attachments").EnumerateArray().ToArray();
         attachments.Should().HaveCount(1);
-        attachments.Single().GetProperty("url").GetString().Should().StartWithEquivalentOf(
+        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");
@@ -80,18 +84,17 @@ public record AttachmentSpecs(ExportWrapperFixture ExportWrapper) : IClassFixtur
     public async Task Message_with_an_audio_attachment_is_rendered_correctly()
     {
         // Act
-        var message = await ExportWrapper.GetMessageAsJsonAsync(
+        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");
 
+        var attachments = message.GetProperty("attachments").EnumerateArray().ToArray();
         attachments.Should().HaveCount(1);
-        attachments.Single().GetProperty("url").GetString().Should().StartWithEquivalentOf(
+        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");

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

@@ -7,13 +7,20 @@ using Xunit;
 
 namespace DiscordChatExporter.Cli.Tests.Specs.JsonWriting;
 
-public record ContentSpecs(ExportWrapperFixture ExportWrapper) : IClassFixture<ExportWrapperFixture>
+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 messages = await ExportWrapper.GetMessagesAsJsonAsync(ChannelIds.DateRangeTestCases);
+        var messages = await _exportWrapper.GetMessagesAsJsonAsync(ChannelIds.DateRangeTestCases);
 
         // Assert
         messages.Select(j => j.GetProperty("id").GetString()).Should().Equal(

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

@@ -8,41 +8,47 @@ using Xunit;
 
 namespace DiscordChatExporter.Cli.Tests.Specs.JsonWriting;
 
-public record EmbedSpecs(ExportWrapperFixture ExportWrapper) : IClassFixture<ExportWrapperFixture>
+public class EmbedSpecs : IClassFixture<ExportWrapperFixture>
 {
+    private readonly ExportWrapperFixture _exportWrapper;
+
+    public EmbedSpecs(ExportWrapperFixture exportWrapper)
+    {
+        _exportWrapper = exportWrapper;
+    }
+
     [Fact]
     public async Task Message_with_an_embed_is_rendered_correctly()
     {
         // Act
-        var message = await ExportWrapper.GetMessageAsJsonAsync(
+        var message = await _exportWrapper.GetMessageAsJsonAsync(
             ChannelIds.EmbedTestCases,
             Snowflake.Parse("866769910729146400")
         );
 
-        var embed = message
-            .GetProperty("embeds")
-            .EnumerateArray()
-            .Single();
-
-        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");
+
+        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");

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

@@ -8,13 +8,20 @@ using Xunit;
 
 namespace DiscordChatExporter.Cli.Tests.Specs.JsonWriting;
 
-public record MentionSpecs(ExportWrapperFixture ExportWrapper) : IClassFixture<ExportWrapperFixture>
+public class MentionSpecs : IClassFixture<ExportWrapperFixture>
 {
+    private readonly ExportWrapperFixture _exportWrapper;
+
+    public MentionSpecs(ExportWrapperFixture exportWrapper)
+    {
+        _exportWrapper = exportWrapper;
+    }
+
     [Fact]
     public async Task User_mention_is_rendered_correctly()
     {
         // Act
-        var message = await ExportWrapper.GetMessageAsJsonAsync(
+        var message = await _exportWrapper.GetMessageAsJsonAsync(
             ChannelIds.MentionTestCases,
             Snowflake.Parse("866458840245076028")
         );
@@ -26,14 +33,15 @@ public record MentionSpecs(ExportWrapperFixture ExportWrapper) : IClassFixture<E
             .GetProperty("mentions")
             .EnumerateArray()
             .Select(j => j.GetProperty("id").GetString())
-            .Should().Contain("128178626683338752");
+            .Should()
+            .Contain("128178626683338752");
     }
 
     [Fact]
     public async Task Text_channel_mention_is_rendered_correctly()
     {
         // Act
-        var message = await ExportWrapper.GetMessageAsJsonAsync(
+        var message = await _exportWrapper.GetMessageAsJsonAsync(
             ChannelIds.MentionTestCases,
             Snowflake.Parse("866459040480624680")
         );
@@ -46,7 +54,7 @@ public record MentionSpecs(ExportWrapperFixture ExportWrapper) : IClassFixture<E
     public async Task Voice_channel_mention_is_rendered_correctly()
     {
         // Act
-        var message = await ExportWrapper.GetMessageAsJsonAsync(
+        var message = await _exportWrapper.GetMessageAsJsonAsync(
             ChannelIds.MentionTestCases,
             Snowflake.Parse("866459175462633503")
         );
@@ -59,7 +67,7 @@ public record MentionSpecs(ExportWrapperFixture ExportWrapper) : IClassFixture<E
     public async Task Role_mention_is_rendered_correctly()
     {
         // Act
-        var message = await ExportWrapper.GetMessageAsJsonAsync(
+        var message = await _exportWrapper.GetMessageAsJsonAsync(
             ChannelIds.MentionTestCases,
             Snowflake.Parse("866459254693429258")
         );

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

@@ -8,23 +8,30 @@ using Xunit;
 
 namespace DiscordChatExporter.Cli.Tests.Specs.JsonWriting;
 
-public record StickerSpecs(ExportWrapperFixture ExportWrapper) : IClassFixture<ExportWrapperFixture>
+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(
+        var message = await _exportWrapper.GetMessageAsJsonAsync(
             ChannelIds.StickerTestCases,
             Snowflake.Parse("939670623158943754")
         );
 
+        // Assert
         var sticker = message
             .GetProperty("stickers")
             .EnumerateArray()
             .Single();
 
-        // Assert
         sticker.GetProperty("id").GetString().Should().Be("904215665597120572");
         sticker.GetProperty("name").GetString().Should().Be("rock");
         sticker.GetProperty("format").GetString().Should().Be("PngAnimated");
@@ -35,17 +42,17 @@ public record StickerSpecs(ExportWrapperFixture ExportWrapper) : IClassFixture<E
     public async Task Message_with_a_Lottie_based_sticker_is_rendered_correctly()
     {
         // Act
-        var message = await ExportWrapper.GetMessageAsJsonAsync(
+        var message = await _exportWrapper.GetMessageAsJsonAsync(
             ChannelIds.StickerTestCases,
             Snowflake.Parse("939670526517997590")
         );
 
+        // Assert
         var sticker = message
             .GetProperty("stickers")
             .EnumerateArray()
             .Single();
 
-        // Assert
         sticker.GetProperty("id").GetString().Should().Be("816087132447178774");
         sticker.GetProperty("name").GetString().Should().Be("Yikes");
         sticker.GetProperty("format").GetString().Should().Be("Lottie");

DiscordChatExporter.Cli.Tests/Specs/PartitioningSpecs.cs

@@ -12,13 +12,20 @@ using Xunit;
 
 namespace DiscordChatExporter.Cli.Tests.Specs;
 
-public record PartitioningSpecs(TempOutputFixture TempOutput) : IClassFixture<TempOutputFixture>
+public class PartitioningSpecs : IClassFixture<TempOutputFixture>
 {
+    private readonly TempOutputFixture _tempOutput;
+
+    public PartitioningSpecs(TempOutputFixture tempOutput)
+    {
+        _tempOutput = tempOutput;
+    }
+
     [Fact]
-    public async Task Messages_partitioned_by_count_are_split_into_multiple_files_correctly()
+    public async Task Messages_partitioned_by_count_are_split_into_a_corresponding_number_of_files()
     {
         // Arrange
-        var filePath = TempOutput.GetTempFilePath();
+        var filePath = _tempOutput.GetTempFilePath();
         var fileNameWithoutExt = Path.GetFileNameWithoutExtension(filePath);
         var dirPath = Path.GetDirectoryName(filePath) ?? Directory.GetCurrentDirectory();
 
@@ -39,10 +46,10 @@ public record PartitioningSpecs(TempOutputFixture TempOutput) : IClassFixture<Te
     }
 
     [Fact]
-    public async Task Messages_partitioned_by_file_size_are_split_into_multiple_files_correctly()
+    public async Task Messages_partitioned_by_file_size_are_split_into_a_corresponding_number_of_files()
     {
         // Arrange
-        var filePath = TempOutput.GetTempFilePath();
+        var filePath = _tempOutput.GetTempFilePath();
         var fileNameWithoutExt = Path.GetFileNameWithoutExtension(filePath);
         var dirPath = Path.GetDirectoryName(filePath) ?? Directory.GetCurrentDirectory();
 
@@ -53,12 +60,12 @@ public record PartitioningSpecs(TempOutputFixture TempOutput) : IClassFixture<Te
             ChannelIds = new[] { ChannelIds.DateRangeTestCases },
             ExportFormat = ExportFormat.HtmlDark,
             OutputPath = filePath,
-            PartitionLimit = PartitionLimit.Parse("20kb")
+            PartitionLimit = PartitionLimit.Parse("1kb")
         }.ExecuteAsync(new FakeConsole());
 
         // Assert
         Directory.EnumerateFiles(dirPath, fileNameWithoutExt + "*")
             .Should()
-            .HaveCount(3);
+            .HaveCount(8);
     }
 }

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

@@ -6,13 +6,20 @@ using Xunit;
 
 namespace DiscordChatExporter.Cli.Tests.Specs.PlainTextWriting;
 
-public record ContentSpecs(ExportWrapperFixture ExportWrapper) : IClassFixture<ExportWrapperFixture>
+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);
+        var document = await _exportWrapper.ExportAsPlainTextAsync(ChannelIds.DateRangeTestCases);
 
         // Assert
         document.Should().ContainAll(

DiscordChatExporter.Cli.Tests/Specs/SelfContainedSpecs.cs

@@ -13,13 +13,20 @@ using Xunit;
 
 namespace DiscordChatExporter.Cli.Tests.Specs;
 
-public record SelfContainedSpecs(TempOutputFixture TempOutput) : IClassFixture<TempOutputFixture>
+public class SelfContainedSpecs : IClassFixture<TempOutputFixture>
 {
+    private readonly TempOutputFixture _tempOutput;
+
+    public SelfContainedSpecs(TempOutputFixture tempOutput)
+    {
+        _tempOutput = tempOutput;
+    }
+
     [Fact]
     public async Task Messages_in_self_contained_export_only_reference_local_file_resources()
     {
         // Arrange
-        var filePath = TempOutput.GetTempFilePath();
+        var filePath = _tempOutput.GetTempFilePath();
         var dirPath = Path.GetDirectoryName(filePath) ?? Directory.GetCurrentDirectory();
 
         // Act
@@ -29,14 +36,12 @@ public record SelfContainedSpecs(TempOutputFixture TempOutput) : IClassFixture<T
             ChannelIds = new[] { ChannelIds.SelfContainedTestCases },
             ExportFormat = ExportFormat.HtmlDark,
             OutputPath = filePath,
-            ShouldDownloadMedia = true
+            ShouldDownloadAssets = true
         }.ExecuteAsync(new FakeConsole());
 
-        var data = await File.ReadAllTextAsync(filePath);
-        var document = Html.Parse(data);
-
         // Assert
-        document
+        Html
+            .Parse(await File.ReadAllTextAsync(filePath))
             .QuerySelectorAll("body [src]")
             .Select(e => e.GetAttribute("src")!)
             .Select(f => Path.GetFullPath(f, dirPath))

DiscordChatExporter.Cli.Tests/TestData/ChannelIds.cs

@@ -10,7 +10,7 @@ public static class ChannelIds
 
     public static Snowflake EmbedTestCases { get; } = Snowflake.Parse("866472452459462687");
 
-    public static Snowflake StickerTestCases { get; } = Snowflake.Parse("939668868253769729");
+    public static Snowflake GroupingTestCases { get; } = Snowflake.Parse("992092091545034842");
 
     public static Snowflake FilterTestCases { get; } = Snowflake.Parse("866744075033641020");
 
@@ -19,4 +19,6 @@ public static class ChannelIds
     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.dockerfile

@@ -0,0 +1,44 @@
+# -- Build
+FROM mcr.microsoft.com/dotnet/sdk:7.0-alpine AS build
+
+WORKDIR /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 \
+    --self-contained \
+    --use-current-runtime \
+    --configuration Release \
+    --output ./publish
+
+# -- Run
+FROM mcr.microsoft.com/dotnet/runtime-deps:7.0-alpine
+
+# Alpine dotnet image doesn't include timezone data, which is needed
+# for certain date/time operations.
+RUN apk add --no-cache tzdata
+
+# Create a non-root user to run the app, so that the output files
+# can be accessed by the host.
+# https://github.com/Tyrrrz/DiscordChatExporter/issues/851
+RUN adduser \
+    --disabled-password \
+    --no-create-home \
+    dce
+
+USER dce
+
+COPY --from=build /build/publish /opt/dce
+
+# Need to keep this as /out for backwards compatibility with documentation.
+# A lot of people have this directory mounted in their scripts files, so
+# changing it would break existing workflows.
+WORKDIR /out
+
+# Add the app directory to PATH so that it's easier to debug using a shell
+ENV PATH="$PATH:/opt/dce"
+ENTRYPOINT ["DiscordChatExporter.Cli"]

DiscordChatExporter.Cli/Commands/Base/ExportCommandBase.cs

@@ -14,40 +14,82 @@ using DiscordChatExporter.Core.Exceptions;
 using DiscordChatExporter.Core.Exporting;
 using DiscordChatExporter.Core.Exporting.Filtering;
 using DiscordChatExporter.Core.Exporting.Partitioning;
+using DiscordChatExporter.Core.Utils;
 using Gress;
 
 namespace DiscordChatExporter.Cli.Commands.Base;
 
 public abstract class ExportCommandBase : TokenCommandBase
 {
-    [CommandOption("output", 'o', Description = "Output file or directory path.")]
-    public string OutputPath { get; init; } = Directory.GetCurrentDirectory();
+    private readonly string _outputPath = Directory.GetCurrentDirectory();
 
-    [CommandOption("format", 'f', Description = "Export format.")]
+    [CommandOption(
+        "output",
+        'o',
+        Description = "Output file or directory path. Directory path should end in a slash."
+    )]
+    public string OutputPath
+    {
+        get => _outputPath;
+        // Handle ~/ in paths on Unix systems
+        // https://github.com/Tyrrrz/DiscordChatExporter/pull/903
+        init => _outputPath = Path.GetFullPath(value);
+    }
+
+    [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.")]
+    [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.")]
+    [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').")]
+    [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').")]
+    [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.")]
+    [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(
+        "media",
+        Description = "Download assets referenced by the export (user avatars, attached files, embedded images, etc.)."
+    )]
+    public bool ShouldDownloadAssets { get; init; }
 
-    [CommandOption("reuse-media", Description = "Reuse already existing media content to skip redundant downloads.")]
-    public bool ShouldReuseMedia { get; init; }
+    [CommandOption(
+        "reuse-media",
+        Description = "Reuse previously downloaded assets to avoid redundant requests."
+    )]
+    public bool ShouldReuseAssets { get; init; }
 
-    [CommandOption("dateformat", Description = "Format used when writing dates.")]
+    [CommandOption(
+        "dateformat",
+        Description = "Format used when writing dates."
+    )]
     public string DateFormat { get; init; } = "dd-MMM-yy hh:mm tt";
 
     private ChannelExporter? _channelExporter;
@@ -55,13 +97,36 @@ public abstract class ExportCommandBase : TokenCommandBase
 
     protected async ValueTask ExecuteAsync(IConsole console, IReadOnlyList<Channel> channels)
     {
-        var cancellationToken = console.RegisterCancellationHandler();
-
-        if (ShouldReuseMedia && !ShouldDownloadMedia)
+        // Reuse assets option should only be used when the download assets option is set.
+        // https://github.com/Tyrrrz/DiscordChatExporter/issues/425
+        if (ShouldReuseAssets && !ShouldDownloadAssets)
         {
-            throw new CommandException("Option --reuse-media cannot be used without --media.");
+            throw new CommandException(
+                "Option --reuse-media cannot be used without --media."
+            );
         }
 
+        // Make sure the user does not try to export all channels into a single file.
+        // Output path must either be a directory, or contain template tokens.
+        // https://github.com/Tyrrrz/DiscordChatExporter/issues/799
+        // https://github.com/Tyrrrz/DiscordChatExporter/issues/917
+        var isValidOutputPath =
+            // Anything is valid when exporting a single channel
+            channels.Count <= 1 ||
+            // When using template tokens, assume the user knows what they're doing
+            OutputPath.Contains('%') ||
+            // Otherwise, require an existing directory or an unambiguous directory path
+            Directory.Exists(OutputPath) || PathEx.IsDirectoryPath(OutputPath);
+
+        if (!isValidOutputPath)
+        {
+            throw new CommandException(
+                "Attempted to export multiple channels, but the output path is neither a directory nor a template. " +
+                "If the provided output path is meant to be treated as a directory, make sure it ends with a slash."
+            );
+        }
+
+        var cancellationToken = console.RegisterCancellationHandler();
         var errors = new ConcurrentDictionary<Channel, string>();
 
         // Export
@@ -93,8 +158,8 @@ public abstract class ExportCommandBase : TokenCommandBase
                                     Before,
                                     PartitionLimit,
                                     MessageFilter,
-                                    ShouldDownloadMedia,
-                                    ShouldReuseMedia,
+                                    ShouldDownloadAssets,
+                                    ShouldReuseAssets,
                                     DateFormat
                                 );
 
@@ -172,7 +237,7 @@ public abstract class ExportCommandBase : TokenCommandBase
         // 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: https://tyrrrz.me                                    ||");
+        console.Output.WriteLine("||   Learn more: https://tyrrrz.me/ukraine                            ||");
         console.Output.WriteLine("========================================================================");
         console.Output.WriteLine("");
 

DiscordChatExporter.Cli/Commands/Base/TokenCommandBase.cs

@@ -9,11 +9,21 @@ namespace DiscordChatExporter.Cli.Commands.Base;
 
 public abstract class TokenCommandBase : ICommand
 {
-    [CommandOption("token", 't', IsRequired = true, EnvironmentVariable = "DISCORD_TOKEN", Description = "Authentication token.")]
-    public string Token { get; init; } = "";
+    [CommandOption(
+        "token",
+        't',
+        EnvironmentVariable = "DISCORD_TOKEN",
+        Description = "Authentication token."
+    )]
+    public required string Token { get; init; }
 
-    [CommandOption("bot", 'b', EnvironmentVariable = "DISCORD_TOKEN_BOT", Description = "This option doesn't do anything. Kept for backwards compatibility.")]
     [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 DiscordClient? _discordClient;

DiscordChatExporter.Cli/Commands/ExportAllCommand.cs

@@ -10,7 +10,10 @@ namespace DiscordChatExporter.Cli.Commands;
 [Command("exportall", Description = "Export all accessible channels.")]
 public class ExportAllCommand : ExportCommandBase
 {
-    [CommandOption("include-dm", Description = "Include direct message channels.")]
+    [CommandOption(
+        "include-dm",
+        Description = "Include direct message channels."
+    )]
     public bool IncludeDirectMessages { get; init; } = true;
 
     public override async ValueTask ExecuteAsync(IConsole console)
@@ -28,13 +31,7 @@ public class ExportAllCommand : ExportCommandBase
                 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);

DiscordChatExporter.Cli/Commands/ExportChannelsCommand.cs

@@ -12,8 +12,12 @@ namespace DiscordChatExporter.Cli.Commands;
 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>();
+    [CommandOption(
+        "channel",
+        'c',
+        Description = "Channel ID(s)."
+    )]
+    public required IReadOnlyList<Snowflake> ChannelIds { get; init; }
 
     public override async ValueTask ExecuteAsync(IConsole console)
     {

DiscordChatExporter.Cli/Commands/ExportDirectMessagesCommand.cs

@@ -18,9 +18,11 @@ public class ExportDirectMessagesCommand : ExportCommandBase
         var cancellationToken = console.RegisterCancellationHandler();
 
         await console.Output.WriteLineAsync("Fetching channels...");
-        var channels = await Discord.GetGuildChannelsAsync(Guild.DirectMessages.Id, cancellationToken);
-        var textChannels = channels.Where(c => c.IsTextChannel).ToArray();
 
-        await base.ExecuteAsync(console, textChannels);
+        var channels = (await Discord.GetGuildChannelsAsync(Guild.DirectMessages.Id, cancellationToken))
+            .Where(c => c.Kind != ChannelKind.GuildCategory)
+            .ToArray();
+
+        await base.ExecuteAsync(console, channels);
     }
 }

DiscordChatExporter.Cli/Commands/ExportGuildCommand.cs

@@ -4,6 +4,7 @@ using CliFx.Attributes;
 using CliFx.Infrastructure;
 using DiscordChatExporter.Cli.Commands.Base;
 using DiscordChatExporter.Core.Discord;
+using DiscordChatExporter.Core.Discord.Data;
 using DiscordChatExporter.Core.Utils.Extensions;
 
 namespace DiscordChatExporter.Cli.Commands;
@@ -11,8 +12,12 @@ namespace DiscordChatExporter.Cli.Commands;
 [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; }
+    [CommandOption(
+        "guild",
+        'g',
+        Description = "Guild ID."
+    )]
+    public required Snowflake GuildId { get; init; }
 
     public override async ValueTask ExecuteAsync(IConsole console)
     {
@@ -21,9 +26,11 @@ public class ExportGuildCommand : ExportCommandBase
         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 base.ExecuteAsync(console, textChannels);
+        var channels = (await Discord.GetGuildChannelsAsync(GuildId, cancellationToken))
+            .Where(c => c.Kind != ChannelKind.GuildCategory)
+            .ToArray();
+
+        await base.ExecuteAsync(console, channels);
     }
 }

DiscordChatExporter.Cli/Commands/GetChannelsCommand.cs

@@ -5,6 +5,7 @@ using CliFx.Attributes;
 using CliFx.Infrastructure;
 using DiscordChatExporter.Cli.Commands.Base;
 using DiscordChatExporter.Core.Discord;
+using DiscordChatExporter.Core.Discord.Data;
 using DiscordChatExporter.Core.Utils.Extensions;
 
 namespace DiscordChatExporter.Cli.Commands;
@@ -12,25 +13,29 @@ namespace DiscordChatExporter.Cli.Commands;
 [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; }
+    [CommandOption(
+        "guild",
+        'g',
+        Description = "Guild ID."
+    )]
+    public required Snowflake GuildId { get; init; }
 
     public override async ValueTask ExecuteAsync(IConsole console)
     {
         var cancellationToken = console.RegisterCancellationHandler();
 
-        var channels = await Discord.GetGuildChannelsAsync(GuildId, cancellationToken);
-
-        var textChannels = channels
-            .Where(c => c.IsTextChannel)
+        var channels = (await Discord.GetGuildChannelsAsync(GuildId, cancellationToken))
+            .Where(c => c.Kind != ChannelKind.GuildCategory)
             .OrderBy(c => c.Category.Position)
             .ThenBy(c => c.Name)
             .ToArray();
 
-        foreach (var channel in textChannels)
+        foreach (var channel in channels)
         {
             // Channel ID
-            await console.Output.WriteAsync(channel.Id.ToString());
+            await console.Output.WriteAsync(
+                channel.Id.ToString().PadRight(18, ' ')
+            );
 
             // Separator
             using (console.WithForegroundColor(ConsoleColor.DarkGray))

DiscordChatExporter.Cli/Commands/GetDirectMessageChannelsCommand.cs

@@ -16,18 +16,18 @@ public class GetDirectMessageChannelsCommand : TokenCommandBase
     {
         var cancellationToken = console.RegisterCancellationHandler();
 
-        var channels = await Discord.GetGuildChannelsAsync(Guild.DirectMessages.Id, cancellationToken);
-
-        var textChannels = channels
-            .Where(c => c.IsTextChannel)
-            .OrderBy(c => c.Category.Position)
+        var channels = (await Discord.GetGuildChannelsAsync(Guild.DirectMessages.Id, cancellationToken))
+            .Where(c => c.Kind != ChannelKind.GuildCategory)
+            .OrderByDescending(c => c.LastMessageId)
             .ThenBy(c => c.Name)
             .ToArray();
 
-        foreach (var channel in textChannels)
+        foreach (var channel in channels)
         {
             // Channel ID
-            await console.Output.WriteAsync(channel.Id.ToString());
+            await console.Output.WriteAsync(
+                channel.Id.ToString().PadRight(18, ' ')
+            );
 
             // Separator
             using (console.WithForegroundColor(ConsoleColor.DarkGray))

DiscordChatExporter.Cli/Commands/GetGuildsCommand.cs

@@ -4,6 +4,7 @@ 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;
@@ -15,12 +16,17 @@ public class GetGuildsCommand : TokenCommandBase
     {
         var cancellationToken = console.RegisterCancellationHandler();
 
-        var guilds = await Discord.GetUserGuildsAsync(cancellationToken);
+        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.OrderBy(g => g.Name))
+        foreach (var guild in guilds)
         {
             // Guild ID
-            await console.Output.WriteAsync(guild.Id.ToString());
+            await console.Output.WriteAsync(
+                guild.Id.ToString().PadRight(18, ' ')
+            );
 
             // Separator
             using (console.WithForegroundColor(ConsoleColor.DarkGray))

DiscordChatExporter.Cli/Commands/GuideCommand.cs

@@ -15,15 +15,16 @@ public class GuideCommand : ICommand
         using (console.WithForegroundColor(ConsoleColor.White))
             console.Output.WriteLine("To get user token:");
 
+        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. 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(" 2. Open any server or direct message channel");
+        console.Output.WriteLine(" 3. Press Ctrl+Shift+I to show developer tools");
+        console.Output.WriteLine(" 4. Navigate to the Network tab");
+        console.Output.WriteLine(" 5. Press Ctrl+R to reload");
+        console.Output.WriteLine(" 6. Search for a request containing \"messages?limit=50\" or similar");
+        console.Output.WriteLine(" 7. Select the Headers tab on the right");
+        console.Output.WriteLine(" 8. Scroll down to the Request Headers section");
+        console.Output.WriteLine(" 9. Copy the value of the \"authorization\" header");
         console.Output.WriteLine();
 
         // Bot token
@@ -34,6 +35,7 @@ public class GuideCommand : ICommand
         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(" *  Your bot needs to have Message Content Intent enabled to read messages");
         console.Output.WriteLine();
 
         // Guild or channel ID
@@ -42,7 +44,7 @@ public class GuideCommand : ICommand
 
         console.Output.WriteLine(" 1. Open Discord");
         console.Output.WriteLine(" 2. Open Settings");
-        console.Output.WriteLine(" 3. Go to Appearance section");
+        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();

DiscordChatExporter.Cli/DiscordChatExporter.Cli.csproj

@@ -6,9 +6,10 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="CliFx" Version="2.2.2" />
-    <PackageReference Include="Spectre.Console" Version="0.43.0" />
+    <PackageReference Include="CliFx" Version="2.3.1" />
+    <PackageReference Include="Spectre.Console" Version="0.45.0" />
     <PackageReference Include="Gress" Version="2.0.1" />
+    <PackageReference Include="DotnetRuntimeBootstrapper" Version="2.4.0" PrivateAssets="all" />
   </ItemGroup>
 
   <ItemGroup>

DiscordChatExporter.Cli/Sanctions.cs

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

DiscordChatExporter.Core/Discord/Data/Attachment.cs

@@ -13,6 +13,7 @@ public partial record Attachment(
     Snowflake Id,
     string Url,
     string FileName,
+    string? Description,
     int? Width,
     int? Height,
     FileSize FileSize) : IHasId
@@ -34,11 +35,12 @@ public partial record Attachment
     {
         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 fileName = json.GetProperty("filename").GetNonNullString();
         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

@@ -14,16 +14,10 @@ public partial record Channel(
     ChannelCategory Category,
     string Name,
     int? Position,
-    string? Topic) : IHasId
+    string? Topic,
+    Snowflake? LastMessageId) : IHasId
 {
-    public bool IsTextChannel => Kind is
-        ChannelKind.GuildTextChat or
-        ChannelKind.DirectTextChat or
-        ChannelKind.DirectGroupTextChat or
-        ChannelKind.GuildNews or
-        ChannelKind.GuildStore;
-
-    public bool IsVoiceChannel => !IsTextChannel;
+    public bool SupportsVoice => Kind is ChannelKind.GuildVoiceChat or ChannelKind.GuildStageVoice;
 }
 
 public partial record Channel
@@ -36,7 +30,6 @@ public partial record Channel
             ChannelKind.DirectTextChat => "Private",
             ChannelKind.DirectGroupTextChat => "Group",
             ChannelKind.GuildNews => "News",
-            ChannelKind.GuildStore => "Store",
             _ => "Default"
         },
         null
@@ -45,9 +38,8 @@ public partial record Channel
     public static Channel Parse(JsonElement json, ChannelCategory? category = null, int? positionHint = null)
     {
         var id = json.GetProperty("id").GetNonWhiteSpaceString().Pipe(Snowflake.Parse);
-        var guildId = json.GetPropertyOrNull("guild_id")?.GetNonWhiteSpaceStringOrNull()?.Pipe(Snowflake.Parse);
-        var topic = json.GetPropertyOrNull("topic")?.GetStringOrNull();
         var kind = (ChannelKind)json.GetProperty("type").GetInt32();
+        var guildId = json.GetPropertyOrNull("guild_id")?.GetNonWhiteSpaceStringOrNull()?.Pipe(Snowflake.Parse);
 
         var name =
             // Guild channel
@@ -63,7 +55,16 @@ public partial record Channel
             // Fallback
             id.ToString();
 
-        var position = positionHint ?? json.GetPropertyOrNull("position")?.GetInt32OrNull();
+        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,
@@ -72,7 +73,8 @@ public partial record Channel
             category ?? GetFallbackCategory(kind),
             name,
             position,
-            topic
+            topic,
+            lastMessageId
         );
     }
 }

DiscordChatExporter.Core/Discord/Data/ChannelCategory.cs

@@ -12,12 +12,15 @@ public record ChannelCategory(Snowflake Id, string Name, int? Position) : IHasId
     public static ChannelCategory Parse(JsonElement json, int? positionHint = null)
     {
         var id = json.GetProperty("id").GetNonWhiteSpaceString().Pipe(Snowflake.Parse);
-        var position = positionHint ?? json.GetPropertyOrNull("position")?.GetInt32OrNull();
 
         var name =
             json.GetPropertyOrNull("name")?.GetNonWhiteSpaceStringOrNull() ??
             id.ToString();
 
+        var position =
+            positionHint ??
+            json.GetPropertyOrNull("position")?.GetInt32OrNull();
+
         return new ChannelCategory(id, name, position);
     }
 }

DiscordChatExporter.Core/Discord/Data/ChannelKind.cs

@@ -5,10 +5,15 @@
 public enum ChannelKind
 {
     GuildTextChat = 0,
-    DirectTextChat,
-    GuildVoiceChat,
-    DirectGroupTextChat,
-    GuildCategory,
-    GuildNews,
-    GuildStore
+    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

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

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

@@ -11,6 +11,7 @@ namespace DiscordChatExporter.Core.Discord.Data.Embeds;
 // https://discord.com/developers/docs/resources/channel#embed-object
 public partial record Embed(
     string? Title,
+    EmbedKind Kind,
     string? Url,
     DateTimeOffset? Timestamp,
     Color? Color,
@@ -18,12 +19,10 @@ public partial record Embed(
     string? Description,
     IReadOnlyList<EmbedField> Fields,
     EmbedImage? Thumbnail,
-    EmbedImage? Image,
+    IReadOnlyList<EmbedImage> Images,
+    EmbedVideo? Video,
     EmbedFooter? Footer)
 {
-    public PlainImageEmbedProjection? TryGetPlainImage() =>
-        PlainImageEmbedProjection.TryResolve(this);
-
     public SpotifyTrackEmbedProjection? TryGetSpotifyTrack() =>
         SpotifyTrackEmbedProjection.TryResolve(this);
 
@@ -36,22 +35,47 @@ public partial record Embed
     public static Embed Parse(JsonElement json)
     {
         var title = json.GetPropertyOrNull("title")?.GetStringOrNull();
+
+        var kind =
+            json.GetPropertyOrNull("type")?.GetStringOrNull()?.ParseEnumOrNull<EmbedKind>() ??
+            EmbedKind.Rich;
+
         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 description = json.GetPropertyOrNull("description")?.GetStringOrNull();
+
+        var color = json
+            .GetPropertyOrNull("color")?
+            .GetInt32OrNull()?
+            .Pipe(System.Drawing.Color.FromArgb)
+            .ResetAlpha();
 
         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 description = json.GetPropertyOrNull("description")?.GetStringOrNull();
 
         var fields =
             json.GetPropertyOrNull("fields")?.EnumerateArrayOrNull()?.Select(EmbedField.Parse).ToArray() ??
             Array.Empty<EmbedField>();
 
+        var thumbnail = json.GetPropertyOrNull("thumbnail")?.Pipe(EmbedImage.Parse);
+
+        // 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 video = json.GetPropertyOrNull("video")?.Pipe(EmbedVideo.Parse);
+
+        var footer = json.GetPropertyOrNull("footer")?.Pipe(EmbedFooter.Parse);
+
         return new Embed(
             title,
+            kind,
             url,
             timestamp,
             color,
@@ -59,7 +83,8 @@ public partial record Embed
             description,
             fields,
             thumbnail,
-            image,
+            images,
+            video,
             footer
         );
     }

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

@@ -0,0 +1,11 @@
+namespace DiscordChatExporter.Core.Discord.Data.Embeds;
+
+// https://discord.com/developers/docs/resources/channel#embed-object-embed-types
+public enum EmbedKind
+{
+    Rich,
+    Image,
+    Video,
+    Gifv,
+    Link
+}

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

@@ -0,0 +1,22 @@
+using JsonExtensions.Reading;
+using System.Text.Json;
+
+namespace DiscordChatExporter.Core.Discord.Data.Embeds;
+
+// https://discord.com/developers/docs/resources/channel#embed-object-embed-video-structure
+public record EmbedVideo(
+    string? Url,
+    string? ProxyUrl,
+    int? Width,
+    int? Height)
+{
+    public static EmbedVideo 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 EmbedVideo(url, proxyUrl, width, height);
+    }
+}

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

@@ -1,33 +0,0 @@
-using System.IO;
-using System.Linq;
-using System.Text.RegularExpressions;
-using DiscordChatExporter.Core.Utils;
-
-namespace DiscordChatExporter.Core.Discord.Data.Embeds;
-
-public record PlainImageEmbedProjection(string Url)
-{
-    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)
-        {
-            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

@@ -21,6 +21,9 @@ public partial record SpotifyTrackEmbedProjection
 
     public static SpotifyTrackEmbedProjection? TryResolve(Embed embed)
     {
+        if (embed.Kind != EmbedKind.Link)
+            return null;
+
         if (string.IsNullOrWhiteSpace(embed.Url))
             return null;
 

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

@@ -10,7 +10,7 @@ public partial record YouTubeVideoEmbedProjection(string VideoId)
 public partial record YouTubeVideoEmbedProjection
 {
     // Adapted from YoutubeExplode
-    // https://github.com/Tyrrrz/YoutubeExplode/blob/5be164be20019783913f76fcc98f18c65aebe9f0/YoutubeExplode/Videos/VideoId.cs#L34-L64
+    // https://github.com/Tyrrrz/YoutubeExplode/blob/bc700b631bd105d0be208a88116347034bdca88b/YoutubeExplode/Videos/VideoId.cs#L40-L62
     private static string? TryParseVideoId(string embedUrl)
     {
         // Regular URL
@@ -31,11 +31,20 @@ public partial record YouTubeVideoEmbedProjection
         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 static YouTubeVideoEmbedProjection? TryResolve(Embed embed)
     {
+        if (embed.Kind != EmbedKind.Video)
+            return null;
+
         if (string.IsNullOrWhiteSpace(embed.Url))
             return null;
 

DiscordChatExporter.Core/Discord/Data/Emoji.cs

@@ -11,12 +11,12 @@ namespace DiscordChatExporter.Core.Discord.Data;
 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. 🙂)
+    // Name of a custom emoji (e.g. LUL) or actual representation of a 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)
+    // Name of a custom emoji (e.g. LUL) or name of a standard emoji (e.g. slight_smile)
     public string Code => Id is not null
         ? Name
         : EmojiIndex.TryGetCode(Name) ?? Name;
@@ -24,20 +24,28 @@ public partial record Emoji(
 
 public partial record Emoji
 {
-    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"))
-    );
+    private static string GetTwemojiId(string name)
+    {
+        var runes = name.GetRunes().ToArray();
+
+        // Variant selector rune is skipped in Twemoji names, except when the emoji also contains a zero-width joiner.
+        // VS = 0xfe0f; ZWJ = 0x200d.
+        var filteredRunes = runes.Any(r => r.Value == 0x200d)
+            ? runes
+            : runes.Where(r => r.Value != 0xfe0f);
+
+        return string.Join(
+            "-",
+            filteredRunes.Select(r => r.Value.ToString("x"))
+        );
+    }
 
     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";
+        $"https://twemoji.maxcdn.com/v/latest/svg/{GetTwemojiId(name)}.svg";
 
     public static string GetImageUrl(Snowflake? id, string? name, bool isAnimated)
     {
@@ -58,7 +66,6 @@ public partial record Emoji
         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(

DiscordChatExporter.Core/Discord/Data/Guild.cs

@@ -1,4 +1,5 @@
-using System.Text.Json;
+using System;
+using System.Text.Json;
 using DiscordChatExporter.Core.Discord.Data.Common;
 using DiscordChatExporter.Core.Utils.Extensions;
 using JsonExtensions.Reading;
@@ -17,15 +18,21 @@ public record Guild(Snowflake Id, string Name, string IconUrl) : IHasId
     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";
+    private static string GetIconUrl(Snowflake id, string iconHash)
+    {
+        var extension = iconHash.StartsWith("a_", StringComparison.Ordinal)
+            ? "gif"
+            : "png";
+
+        return $"https://cdn.discordapp.com/icons/{id}/{iconHash}.{extension}";
+    }
 
     public static Guild Parse(JsonElement json)
     {
         var id = json.GetProperty("id").GetNonWhiteSpaceString().Pipe(Snowflake.Parse);
         var name = json.GetProperty("name").GetNonNullString();
-        var iconHash = json.GetPropertyOrNull("icon")?.GetNonWhiteSpaceStringOrNull();
 
+        var iconHash = json.GetPropertyOrNull("icon")?.GetNonWhiteSpaceStringOrNull();
         var iconUrl = !string.IsNullOrWhiteSpace(iconHash)
             ? GetIconUrl(id, iconHash)
             : GetDefaultIconUrl();

DiscordChatExporter.Core/Discord/Data/Message.cs

@@ -27,18 +27,76 @@ public record Message(
     MessageReference? Reference,
     Message? ReferencedMessage) : IHasId
 {
+    private static IReadOnlyList<Embed> NormalizeEmbeds(IReadOnlyList<Embed> embeds)
+    {
+        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 embed = embeds[i];
+
+            if (embed.Url?.Contains("://twitter.com/", StringComparison.OrdinalIgnoreCase) == true)
+            {
+                // 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();
+
+                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 });
+
+                    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 kind = (MessageKind)json.GetProperty("type").GetInt32();
+        var callEndedTimestamp = json
+            .GetPropertyOrNull("call")?
+            .GetPropertyOrNull("ended_timestamp")?
+            .GetDateTimeOffset();
+
         var isPinned = json.GetPropertyOrNull("pinned")?.GetBooleanOrNull() ?? false;
-        var messageReference = json.GetPropertyOrNull("message_reference")?.Pipe(MessageReference.Parse);
-        var referencedMessage = json.GetPropertyOrNull("referenced_message")?.Pipe(Parse);
 
         var content = kind switch
         {
@@ -49,6 +107,7 @@ public record Message(
             MessageKind.ChannelNameChange => "Changed the channel name.",
             MessageKind.ChannelIconChange => "Changed the channel icon.",
             MessageKind.ChannelPinnedMessage => "Pinned a message.",
+            MessageKind.ThreadCreated => "Started a thread.",
             MessageKind.GuildMemberJoin => "Joined the server.",
             _ => json.GetPropertyOrNull("content")?.GetStringOrNull() ?? ""
         };
@@ -57,9 +116,10 @@ public record Message(
             json.GetPropertyOrNull("attachments")?.EnumerateArrayOrNull()?.Select(Attachment.Parse).ToArray() ??
             Array.Empty<Attachment>();
 
-        var embeds =
+        var embeds = NormalizeEmbeds(
             json.GetPropertyOrNull("embeds")?.EnumerateArrayOrNull()?.Select(Embed.Parse).ToArray() ??
-            Array.Empty<Embed>();
+            Array.Empty<Embed>()
+        );
 
         var stickers =
             json.GetPropertyOrNull("sticker_items")?.EnumerateArrayOrNull()?.Select(Sticker.Parse).ToArray() ??
@@ -73,6 +133,9 @@ public record Message(
             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,

DiscordChatExporter.Core/Discord/Data/MessageKind.cs

@@ -11,5 +11,11 @@ public enum MessageKind
     ChannelIconChange = 5,
     ChannelPinnedMessage = 6,
     GuildMemberJoin = 7,
+    ThreadCreated = 18,
     Reply = 19
+}
+
+public static class MessageKindExtensions
+{
+    public static bool IsSystemNotification(this MessageKind c) => (int)c is >= 1 and <= 18;
 }

DiscordChatExporter.Core/Discord/Data/MessageReference.cs

@@ -9,9 +9,20 @@ public record MessageReference(Snowflake? MessageId, Snowflake? ChannelId, Snowf
 {
     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);
+        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/Sticker.cs

@@ -4,6 +4,7 @@ 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)
@@ -15,9 +16,8 @@ public record Sticker(Snowflake Id, string Name, StickerFormat Format, string So
     public static Sticker Parse(JsonElement json)
     {
         var id = json.GetProperty("id").GetNonWhiteSpaceString().Pipe(Snowflake.Parse);
-        var name = json.GetProperty("name").GetNonWhiteSpaceString();
+        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/User.cs

@@ -30,7 +30,7 @@ public partial record User
             ? "gif"
             : "png";
 
-        return $"https://cdn.discordapp.com/avatars/{id}/{avatarHash}.{extension}?size=128";
+        return $"https://cdn.discordapp.com/avatars/{id}/{avatarHash}.{extension}?size=512";
     }
 
     public static User Parse(JsonElement json)
@@ -39,8 +39,8 @@ public partial record User
         var isBot = json.GetPropertyOrNull("bot")?.GetBooleanOrNull() ?? false;
         var discriminator = json.GetProperty("discriminator").GetNonWhiteSpaceString().Pipe(int.Parse);
         var name = json.GetProperty("username").GetNonNullString();
-        var avatarHash = json.GetPropertyOrNull("avatar")?.GetNonWhiteSpaceStringOrNull();
 
+        var avatarHash = json.GetPropertyOrNull("avatar")?.GetNonWhiteSpaceStringOrNull();
         var avatarUrl = !string.IsNullOrWhiteSpace(avatarHash)
             ? GetAvatarUrl(id, avatarHash)
             : GetDefaultAvatarUrl(discriminator);

DiscordChatExporter.Core/Discord/DiscordClient.cs

@@ -1,9 +1,9 @@
 using System;
 using System.Collections.Generic;
+using System.Globalization;
 using System.Linq;
 using System.Net;
 using System.Net.Http;
-using System.Net.Http.Headers;
 using System.Runtime.CompilerServices;
 using System.Text.Json;
 using System.Threading;
@@ -23,62 +23,99 @@ public class DiscordClient
     private readonly string _token;
     private readonly Uri _baseUri = new("https://discord.com/api/v9/", UriKind.Absolute);
 
-    private TokenKind _tokenKind = TokenKind.Unknown;
+    private TokenKind? _resolvedTokenKind;
 
     public DiscordClient(string token) => _token = token;
 
     private async ValueTask<HttpResponseMessage> GetResponseAsync(
         string url,
-        bool isBot,
+        TokenKind tokenKind,
         CancellationToken cancellationToken = default)
     {
-        using var request = new HttpRequestMessage(HttpMethod.Get, new Uri(_baseUri, url));
+        return await Http.ResponseResiliencePolicy.ExecuteAsync(async innerCancellationToken =>
+        {
+            using var request = new HttpRequestMessage(HttpMethod.Get, new Uri(_baseUri, url));
 
-        request.Headers.Authorization = isBot
-            ? new AuthenticationHeaderValue("Bot", _token)
-            : new AuthenticationHeaderValue(_token);
+            // Don't validate because the token can have special characters
+            // https://github.com/Tyrrrz/DiscordChatExporter/issues/828
+            request.Headers.TryAddWithoutValidation(
+                "Authorization",
+                tokenKind == TokenKind.Bot
+                    ? $"Bot {_token}"
+                    : _token
+            );
 
-        return await Http.Client.SendAsync(
-            request,
-            HttpCompletionOption.ResponseHeadersRead,
+            var response = await Http.Client.SendAsync(
+                request,
+                HttpCompletionOption.ResponseHeadersRead,
+                innerCancellationToken
+            );
+
+            // If this was the last request available before hitting the rate limit,
+            // wait out the reset time so that future requests can succeed.
+            // This may add an unnecessary delay in case the user doesn't intend to
+            // make any more requests, but implementing a smarter solution would
+            // require properly keeping track of Discord's global/per-route/per-resource
+            // rate limits and that's just way too much effort.
+            // https://discord.com/developers/docs/topics/rate-limits
+            var remainingRequestCount = response
+                .Headers
+                .TryGetValue("X-RateLimit-Remaining")?
+                .Pipe(s => int.Parse(s, CultureInfo.InvariantCulture));
+
+            var resetAfterDelay = response
+                .Headers
+                .TryGetValue("X-RateLimit-Reset-After")?
+                .Pipe(s => TimeSpan.FromSeconds(double.Parse(s, CultureInfo.InvariantCulture)));
+
+            if (remainingRequestCount <= 0 && resetAfterDelay is not null)
+            {
+                var delay =
+                    // Adding a small buffer to the reset time reduces the chance of getting
+                    // rate limited again, because it allows for more requests to be released.
+                    (resetAfterDelay.Value + TimeSpan.FromSeconds(1))
+                    // Sometimes Discord returns an absurdly high value for the reset time, which
+                    // is not actually enforced by the server. So we cap it at a reasonable value.
+                    .Clamp(TimeSpan.Zero, TimeSpan.FromSeconds(60));
+
+                await Task.Delay(delay, innerCancellationToken);
+            }
+
+            return response;
+        }, cancellationToken);
+    }
+
+    private async ValueTask<TokenKind> GetTokenKindAsync(CancellationToken cancellationToken = default)
+    {
+        // Try authenticating as a user
+        using var userResponse = await GetResponseAsync(
+            "users/@me",
+            TokenKind.User,
             cancellationToken
         );
+
+        if (userResponse.StatusCode != HttpStatusCode.Unauthorized)
+            return TokenKind.User;
+
+        // Try authenticating as a bot
+        using var botResponse = await GetResponseAsync(
+            "users/@me",
+            TokenKind.Bot,
+            cancellationToken
+        );
+
+        if (botResponse.StatusCode != HttpStatusCode.Unauthorized)
+            return TokenKind.Bot;
+
+        throw DiscordChatExporterException.Unauthorized();
     }
 
     private async ValueTask<HttpResponseMessage> GetResponseAsync(
         string url,
         CancellationToken cancellationToken = default)
     {
-        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)
-            {
-                _tokenKind = TokenKind.User;
-                return userResponse;
-            }
-
-            userResponse.Dispose();
-
-            // Otherwise, try to authenticate as bot
-            var botResponse = await GetResponseAsync(url, true, innerCancellationToken);
-            if (botResponse.StatusCode != HttpStatusCode.Unauthorized)
-            {
-                _tokenKind = TokenKind.Bot;
-                return botResponse;
-            }
-
-            // The token is probably invalid altogether.
-            // Return the last response anyway, upstream should handle the error.
-            return botResponse;
-        }, cancellationToken);
+        var tokenKind = _resolvedTokenKind ??= await GetTokenKindAsync(cancellationToken);
+        return await GetResponseAsync(url, tokenKind, cancellationToken);
     }
 
     private async ValueTask<JsonElement> GetJsonResponseAsync(
@@ -179,6 +216,8 @@ public class DiscordClient
                 .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)

DiscordChatExporter.Core/Discord/Snowflake.cs

@@ -1,7 +1,6 @@
 using System;
 using System.Diagnostics.CodeAnalysis;
 using System.Globalization;
-using System.Text.RegularExpressions;
 
 namespace DiscordChatExporter.Core.Discord;
 
@@ -29,7 +28,7 @@ public partial record struct Snowflake
             return null;
 
         // As number
-        if (Regex.IsMatch(str, @"^\d+$") && ulong.TryParse(str, NumberStyles.Number, formatProvider, out var value))
+        if (ulong.TryParse(str, NumberStyles.None, formatProvider, out var value))
         {
             return new Snowflake(value);
         }
@@ -49,7 +48,15 @@ public partial record struct Snowflake
     public static Snowflake Parse(string str) => Parse(str, null);
 }
 
-public partial record struct Snowflake : IComparable<Snowflake>
+public partial record struct Snowflake : IComparable<Snowflake>, IComparable
 {
     public int CompareTo(Snowflake other) => Value.CompareTo(other.Value);
+
+    public int CompareTo(object? obj)
+    {
+        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

@@ -2,7 +2,6 @@
 
 public enum TokenKind
 {
-    Unknown,
     User,
     Bot
 }

DiscordChatExporter.Core/DiscordChatExporter.Core.csproj

@@ -7,13 +7,14 @@
   <ItemGroup>
     <PackageReference Include="Gress" Version="2.0.1" />
     <PackageReference Include="JsonExtensions" Version="1.2.0" />
-    <PackageReference Include="MiniRazor.CodeGen" Version="2.2.0" />
     <PackageReference Include="Polly" Version="7.2.3" />
+    <PackageReference Include="RazorBlade" Version="0.4.1" />
     <PackageReference Include="Superpower" Version="3.0.0" />
+    <PackageReference Include="WebMarkupMin.Core" Version="2.13.0" />
   </ItemGroup>
 
   <ItemGroup>
-    <AdditionalFiles Include="Exporting\Writers\Html\*.cshtml" IsRazorTemplate="true" />
+    <RazorBlade Include="Exporting\Writers\Html\*.cshtml" />
   </ItemGroup>
 
 </Project>

DiscordChatExporter.Core/Exporting/ExportAssetDownloader.cs

@@ -12,18 +12,18 @@ using DiscordChatExporter.Core.Utils.Extensions;
 
 namespace DiscordChatExporter.Core.Exporting;
 
-internal partial class MediaDownloader
+internal partial class ExportAssetDownloader
 {
     private readonly string _workingDirPath;
-    private readonly bool _reuseMedia;
+    private readonly bool _reuse;
 
-    // File paths of already downloaded media
+    // File paths of the previously downloaded assets
     private readonly Dictionary<string, string> _pathCache = new(StringComparer.Ordinal);
 
-    public MediaDownloader(string workingDirPath, bool reuseMedia)
+    public ExportAssetDownloader(string workingDirPath, bool reuse)
     {
         _workingDirPath = workingDirPath;
-        _reuseMedia = reuseMedia;
+        _reuse = reuse;
     }
 
     public async ValueTask<string> DownloadAsync(string url, CancellationToken cancellationToken = default)
@@ -35,51 +35,48 @@ internal partial class MediaDownloader
         var filePath = Path.Combine(_workingDirPath, fileName);
 
         // Reuse existing files if we're allowed to
-        if (_reuseMedia && File.Exists(filePath))
-            return _pathCache[url] = filePath;
-
-        Directory.CreateDirectory(_workingDirPath);
-
-        // This retries on IOExceptions which is dangerous as we're also working with files
-        await Http.ExceptionPolicy.ExecuteAsync(async () =>
+        if (!_reuse || !File.Exists(filePath))
         {
-            // Download the file
-            using var response = await Http.Client.GetAsync(url, cancellationToken);
-            await using (var output = File.Create(filePath))
-            {
-                await response.Content.CopyToAsync(output, cancellationToken);
-            }
+            Directory.CreateDirectory(_workingDirPath);
 
-            // Try to set the file date according to the last-modified header
-            try
+            await Http.ResiliencePolicy.ExecuteAsync(async () =>
             {
-                var lastModified = response.Content.Headers.TryGetValue("Last-Modified")?.Pipe(s =>
-                    DateTimeOffset.TryParse(s, CultureInfo.InvariantCulture, DateTimeStyles.None, out var date)
-                        ? date
-                        : (DateTimeOffset?) null
-                );
+                // Download the file
+                using var response = await Http.Client.GetAsync(url, cancellationToken);
+                await using (var output = File.Create(filePath))
+                    await response.Content.CopyToAsync(output, cancellationToken);
 
-                if (lastModified is not null)
+                // Try to set the file date according to the last-modified header
+                try
                 {
-                    File.SetCreationTimeUtc(filePath, lastModified.Value.UtcDateTime);
-                    File.SetLastWriteTimeUtc(filePath, lastModified.Value.UtcDateTime);
-                    File.SetLastAccessTimeUtc(filePath, lastModified.Value.UtcDateTime);
+                    var lastModified = response.Content.Headers.TryGetValue("Last-Modified")?.Pipe(s =>
+                        DateTimeOffset.TryParse(s, CultureInfo.InvariantCulture, DateTimeStyles.None, out var date)
+                            ? date
+                            : (DateTimeOffset?) null
+                    );
+
+                    if (lastModified is not null)
+                    {
+                        File.SetCreationTimeUtc(filePath, lastModified.Value.UtcDateTime);
+                        File.SetLastWriteTimeUtc(filePath, lastModified.Value.UtcDateTime);
+                        File.SetLastAccessTimeUtc(filePath, lastModified.Value.UtcDateTime);
+                    }
                 }
-            }
-            catch
-            {
-                // This can apparently fail for some reason.
-                // https://github.com/Tyrrrz/DiscordChatExporter/issues/585
-                // Updating file dates is not a critical task, so we'll just
-                // ignore exceptions thrown here.
-            }
-        });
+                catch
+                {
+                    // This can apparently fail for some reason.
+                    // https://github.com/Tyrrrz/DiscordChatExporter/issues/585
+                    // Updating file dates is not a critical task, so we'll just
+                    // ignore exceptions thrown here.
+                }
+            });
+        }
 
         return _pathCache[url] = filePath;
     }
 }
 
-internal partial class MediaDownloader
+internal partial class ExportAssetDownloader
 {
     private static string GetUrlHash(string url)
     {
@@ -103,7 +100,7 @@ internal partial class MediaDownloader
         // Otherwise, use the original file name but inject the hash in the middle
         var fileNameWithoutExtension = Path.GetFileNameWithoutExtension(fileName);
         var fileExtension = Path.GetExtension(fileName);
-        
+
         // Probably not a file extension, just a dot in a long file name
         // https://github.com/Tyrrrz/DiscordChatExporter/issues/708
         if (fileExtension.Length > 41)
@@ -114,4 +111,4 @@ internal partial class MediaDownloader
 
         return PathEx.EscapeFileName(fileNameWithoutExtension.Truncate(42) + '-' + urlHash + fileExtension);
     }
-}
+}

DiscordChatExporter.Core/Exporting/ExportContext.cs

@@ -14,7 +14,7 @@ namespace DiscordChatExporter.Core.Exporting;
 
 internal class ExportContext
 {
-    private readonly MediaDownloader _mediaDownloader;
+    private readonly ExportAssetDownloader _assetDownloader;
 
     public ExportRequest Request { get; }
 
@@ -35,14 +35,14 @@ internal class ExportContext
         Channels = channels;
         Roles = roles;
 
-        _mediaDownloader = new MediaDownloader(request.OutputMediaDirPath, request.ShouldReuseMedia);
+        _assetDownloader = new ExportAssetDownloader(request.OutputAssetsDirPath, request.ShouldReuseAssets);
     }
 
     public string FormatDate(DateTimeOffset date) => Request.DateFormat switch
     {
         "unix" => date.ToUnixTimeSeconds().ToString(),
         "unixms" => date.ToUnixTimeMilliseconds().ToString(),
-        var dateFormat => date.ToLocalString(dateFormat)
+        var format => date.ToLocalString(format)
     };
 
     public Member? TryGetMember(Snowflake id) => Members.FirstOrDefault(m => m.Id == id);
@@ -63,14 +63,14 @@ internal class ExportContext
             .FirstOrDefault();
     }
 
-    public async ValueTask<string> ResolveMediaUrlAsync(string url, CancellationToken cancellationToken = default)
+    public async ValueTask<string> ResolveAssetUrlAsync(string url, CancellationToken cancellationToken = default)
     {
-        if (!Request.ShouldDownloadMedia)
+        if (!Request.ShouldDownloadAssets)
             return url;
 
         try
         {
-            var filePath = await _mediaDownloader.DownloadAsync(url, cancellationToken);
+            var filePath = await _assetDownloader.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.

DiscordChatExporter.Core/Exporting/ExportRequest.cs

@@ -19,8 +19,8 @@ public partial record ExportRequest(
     Snowflake? Before,
     PartitionLimit PartitionLimit,
     MessageFilter MessageFilter,
-    bool ShouldDownloadMedia,
-    bool ShouldReuseMedia,
+    bool ShouldDownloadAssets,
+    bool ShouldReuseAssets,
     string DateFormat)
 {
     private string? _outputBaseFilePath;
@@ -35,49 +35,11 @@ public partial record ExportRequest(
 
     public string OutputBaseDirPath => Path.GetDirectoryName(OutputBaseFilePath) ?? OutputPath;
 
-    public string OutputMediaDirPath => $"{OutputBaseFilePath}_Files{Path.DirectorySeparatorChar}";
+    public string OutputAssetsDirPath => $"{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)
-    {
-        // 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 ?? 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)))
-        {
-            var fileName = GetDefaultOutputFileName(guild, channel, format, after, before);
-            return Path.Combine(outputPath, fileName);
-        }
-
-        // Output is a file
-        return outputPath;
-    }
-
     public static string GetDefaultOutputFileName(
         Guild guild,
         Channel channel,
@@ -93,7 +55,7 @@ public partial record ExportRequest
         // Date range
         if (after is not null || before is not null)
         {
-            buffer.Append(" (");
+            buffer.Append(' ').Append('(');
 
             // Both 'after' and 'before' are set
             if (after is not null && before is not null)
@@ -111,12 +73,53 @@ public partial record ExportRequest
                 buffer.Append($"before {before.Value.ToDate():yyyy-MM-dd}");
             }
 
-            buffer.Append(")");
+            buffer.Append(')');
         }
 
         // File extension
-        buffer.Append($".{format.GetFileExtension()}");
+        buffer.Append('.').Append(format.GetFileExtension());
 
         return PathEx.EscapeFileName(buffer.ToString());
     }
+
+    private static string GetOutputBaseFilePath(
+        Guild guild,
+        Channel channel,
+        string outputPath,
+        ExportFormat format,
+        Snowflake? after = null,
+        Snowflake? before = null)
+    {
+        // Format path
+        var actualOutputPath = Regex.Replace(
+            outputPath,
+            "%.",
+            m => PathEx.EscapeFileName(m.Value switch
+            {
+                "%g" => guild.Id.ToString(),
+                "%G" => guild.Name,
+                "%t" => channel.Category.Id.ToString(),
+                "%T" => channel.Category.Name,
+                "%c" => channel.Id.ToString(),
+                "%C" => channel.Name,
+                "%p" => channel.Position?.ToString() ?? "0",
+                "%P" => channel.Category.Position?.ToString() ?? "0",
+                "%a" => after?.ToDate().ToString("yyyy-MM-dd") ?? "",
+                "%b" => before?.ToDate().ToString("yyyy-MM-dd") ?? "",
+                "%d" => DateTimeOffset.Now.ToString("yyyy-MM-dd"),
+                "%%" => "%",
+                _ => m.Value
+            })
+        );
+
+        // Output is a directory
+        if (Directory.Exists(actualOutputPath) || string.IsNullOrWhiteSpace(Path.GetExtension(actualOutputPath)))
+        {
+            var fileName = GetDefaultOutputFileName(guild, channel, format, after, before);
+            return Path.Combine(actualOutputPath, fileName);
+        }
+
+        // Output is a file
+        return actualOutputPath;
+    }
 }

DiscordChatExporter.Core/Exporting/Filtering/ContainsMessageFilter.cs

@@ -10,11 +10,19 @@ internal class ContainsMessageFilter : MessageFilter
 
     public ContainsMessageFilter(string text) => _text = text;
 
+    // Match content within word boundaries, between spaces, or as the whole input.
+    // For example, "max" shouldn't match on content "our maximum effort",
+    // but should match on content "our max effort".
+    // Also, "(max)" should match on content "our (max) effort", even though
+    // parentheses are not considered word characters.
+    // https://github.com/Tyrrrz/DiscordChatExporter/issues/909
     private bool IsMatch(string? content) =>
         !string.IsNullOrWhiteSpace(content) &&
         Regex.IsMatch(
             content,
-            "\\b" + Regex.Escape(_text) + "\\b",
+            @"(?:\b|\s|^)" +
+            Regex.Escape(_text) +
+            @"(?:\b|\s|$)",
             RegexOptions.IgnoreCase | RegexOptions.CultureInvariant
         );
 

DiscordChatExporter.Core/Exporting/Filtering/HasMessageFilter.cs

@@ -19,6 +19,7 @@ internal class HasMessageFilter : MessageFilter
         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/MessageContentMatchKind.cs

@@ -7,5 +7,6 @@ internal enum MessageContentMatchKind
     File,
     Video,
     Image,
-    Sound
+    Sound,
+    Pin
 }

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

@@ -15,94 +15,107 @@ internal static class FilterGrammar
         from close in Character.EqualTo(open)
         select value;
 
-    private static readonly TextParser<char> FreeCharacter =
-        Character.Matching(c =>
-                !char.IsWhiteSpace(c) &&
-                // Avoid all special tokens used by the grammar
-                c is not ('(' or ')' or '"' or '\'' or '-' or '|' or '&'),
-            "any character except whitespace or `(`, `)`, `\"`, `'`, `-`, `|`, `&`"
-        );
-
     private static readonly TextParser<string> UnquotedString =
-        Parse.OneOf(EscapedCharacter, FreeCharacter).AtLeastOnce().Text();
+        Parse.OneOf(
+            EscapedCharacter,
+            // Avoid whitespace as it's treated as an implicit 'and' operator.
+            // Also avoid all special tokens used by other parsers.
+            Character.ExceptIn(' ', '(', ')', '"', '\'', '-', '~', '|', '&')
+        ).AtLeastOnce().Text();
 
     private static readonly TextParser<string> String =
         Parse.OneOf(QuotedString, UnquotedString).Named("text string");
 
     private static readonly TextParser<MessageFilter> ContainsFilter =
-        String.Select(v => (MessageFilter) new ContainsMessageFilter(v));
+        String.Select(v => (MessageFilter)new ContainsMessageFilter(v));
 
-    private static readonly TextParser<MessageFilter> FromFilter = Span
-        .EqualToIgnoreCase("from:")
-        .IgnoreThen(String)
-        .Select(v => (MessageFilter) new FromMessageFilter(v))
-        .Named("from:<value>");
+    private static readonly TextParser<MessageFilter> FromFilter =
+        Span
+            .EqualToIgnoreCase("from:")
+            .Try()
+            .IgnoreThen(String)
+            .Select(v => (MessageFilter)new FromMessageFilter(v))
+            .Named("from:<value>");
 
-    private static readonly TextParser<MessageFilter> MentionsFilter = Span
-        .EqualToIgnoreCase("mentions:")
-        .IgnoreThen(String)
-        .Select(v => (MessageFilter) new MentionsMessageFilter(v))
-        .Named("mentions:<value>");
+    private static readonly TextParser<MessageFilter> MentionsFilter =
+        Span
+            .EqualToIgnoreCase("mentions:")
+            .Try()
+            .IgnoreThen(String)
+            .Select(v => (MessageFilter)new MentionsMessageFilter(v))
+            .Named("mentions:<value>");
 
-    private static readonly TextParser<MessageFilter> ReactionFilter = Span
-        .EqualToIgnoreCase("reaction:")
-        .IgnoreThen(String)
-        .Select(v => (MessageFilter) new ReactionMessageFilter(v))
-        .Named("reaction:<value>");
+    private static readonly TextParser<MessageFilter> ReactionFilter =
+        Span
+            .EqualToIgnoreCase("reaction:")
+            .Try()
+            .IgnoreThen(String)
+            .Select(v => (MessageFilter)new ReactionMessageFilter(v))
+            .Named("reaction:<value>");
 
-    private static readonly TextParser<MessageFilter> HasFilter = Span
-        .EqualToIgnoreCase("has:")
-        .IgnoreThen(Parse.OneOf(
-            Span.EqualToIgnoreCase("link").IgnoreThen(Parse.Return(MessageContentMatchKind.Link)),
-            Span.EqualToIgnoreCase("embed").IgnoreThen(Parse.Return(MessageContentMatchKind.Embed)),
-            Span.EqualToIgnoreCase("file").IgnoreThen(Parse.Return(MessageContentMatchKind.File)),
-            Span.EqualToIgnoreCase("video").IgnoreThen(Parse.Return(MessageContentMatchKind.Video)),
-            Span.EqualToIgnoreCase("image").IgnoreThen(Parse.Return(MessageContentMatchKind.Image)),
-            Span.EqualToIgnoreCase("sound").IgnoreThen(Parse.Return(MessageContentMatchKind.Sound))
-        ))
-        .Select(k => (MessageFilter) new HasMessageFilter(k))
-        .Named("has:<value>");
+    private static readonly TextParser<MessageFilter> HasFilter =
+        Span
+            .EqualToIgnoreCase("has:")
+            .Try()
+            .IgnoreThen(Parse.OneOf(
+                Span.EqualToIgnoreCase("link").IgnoreThen(Parse.Return(MessageContentMatchKind.Link)),
+                Span.EqualToIgnoreCase("embed").IgnoreThen(Parse.Return(MessageContentMatchKind.Embed)),
+                Span.EqualToIgnoreCase("file").IgnoreThen(Parse.Return(MessageContentMatchKind.File)),
+                Span.EqualToIgnoreCase("video").IgnoreThen(Parse.Return(MessageContentMatchKind.Video)),
+                Span.EqualToIgnoreCase("image").IgnoreThen(Parse.Return(MessageContentMatchKind.Image)),
+                Span.EqualToIgnoreCase("sound").IgnoreThen(Parse.Return(MessageContentMatchKind.Sound)),
+                Span.EqualToIgnoreCase("pin").IgnoreThen(Parse.Return(MessageContentMatchKind.Pin))
+            ))
+            .Select(k => (MessageFilter)new HasMessageFilter(k))
+            .Named("has:<value>");
 
-    private static readonly TextParser<MessageFilter> NegatedFilter = Character
-        .EqualTo('-')
-        .IgnoreThen(Parse.Ref(() => StandaloneFilter!))
-        .Select(f => (MessageFilter) new NegatedMessageFilter(f));
+    // Make sure that property-based filters like 'has:link' don't prevent text like 'hello' from being parsed.
+    // https://github.com/Tyrrrz/DiscordChatExporter/issues/909#issuecomment-1227575455
+    private static readonly TextParser<MessageFilter> PrimitiveFilter =
+        Parse.OneOf(
+            FromFilter,
+            MentionsFilter,
+            ReactionFilter,
+            HasFilter,
+            ContainsFilter
+        );
 
     private static readonly TextParser<MessageFilter> GroupedFilter =
         from open in Character.EqualTo('(')
-        from content in Parse.Ref(() => BinaryExpressionFilter!).Token()
+        from content in Parse.Ref(() => ChainedFilter!).Token()
         from close in Character.EqualTo(')')
         select content;
 
-    private static readonly TextParser<MessageFilter> StandaloneFilter = Parse.OneOf(
-        GroupedFilter,
-        FromFilter,
-        MentionsFilter,
-        ReactionFilter,
-        HasFilter,
-        ContainsFilter
-    );
+    private static readonly TextParser<MessageFilter> NegatedFilter =
+        Character
+            // Dash is annoying to use from CLI due to conflicts with options, so we provide tilde as an alias
+            .In('-', '~')
+            .IgnoreThen(Parse.OneOf(GroupedFilter, PrimitiveFilter))
+            .Select(f => (MessageFilter)new NegatedMessageFilter(f));
 
-    private static readonly TextParser<MessageFilter> UnaryExpressionFilter = Parse.OneOf(
-        NegatedFilter,
-        StandaloneFilter
-    );
-
-    private static readonly TextParser<MessageFilter> BinaryExpressionFilter = Parse.Chain(
-        Parse.OneOf(
-            // Explicit operator
-            Character.In('|', '&').Token().Try(),
-            // Implicit operator (resolves to 'and')
-            Character.WhiteSpace.AtLeastOnce().IgnoreThen(Parse.Return(' '))
-        ),
-        UnaryExpressionFilter,
-        (op, left, right) => op switch
-        {
-            '|' => new BinaryExpressionMessageFilter(left, right, BinaryExpressionKind.Or),
-            _ => new BinaryExpressionMessageFilter(left, right, BinaryExpressionKind.And)
-        }
-    );
+    private static readonly TextParser<MessageFilter> ChainedFilter =
+        Parse.Chain(
+            // Operator
+            Parse.OneOf(
+                // Explicit operator
+                Character.In('|', '&').Token().Try(),
+                // Implicit operator (resolves to 'and')
+                Character.EqualTo(' ').AtLeastOnce().IgnoreThen(Parse.Return(' '))
+            ),
+            // Operand
+            Parse.OneOf(
+                NegatedFilter,
+                GroupedFilter,
+                PrimitiveFilter
+            ),
+            // Reducer
+            (op, left, right) => op switch
+            {
+                '|' => new BinaryExpressionMessageFilter(left, right, BinaryExpressionKind.Or),
+                _ => new BinaryExpressionMessageFilter(left, right, BinaryExpressionKind.And)
+            }
+        );
 
     public static readonly TextParser<MessageFilter> Filter =
-        BinaryExpressionFilter.Token().AtEnd();
+        ChainedFilter.Token().AtEnd();
 }

DiscordChatExporter.Core/Exporting/Writers/CsvMessageWriter.cs

@@ -19,8 +19,10 @@ internal partial class CsvMessageWriter : MessageWriter
         _writer = new StreamWriter(stream);
     }
 
-    private string FormatMarkdown(string? markdown) =>
-        PlainTextMarkdownVisitor.Format(Context, markdown ?? "");
+    private ValueTask<string> FormatMarkdownAsync(
+        string markdown,
+        CancellationToken cancellationToken = default) =>
+        PlainTextMarkdownVisitor.FormatAsync(Context, markdown, cancellationToken);
 
     public override async ValueTask WritePreambleAsync(CancellationToken cancellationToken = default) =>
         await _writer.WriteLineAsync("AuthorID,Author,Date,Content,Attachments,Reactions");
@@ -37,7 +39,7 @@ internal partial class CsvMessageWriter : MessageWriter
 
             buffer
                 .AppendIfNotEmpty(',')
-                .Append(await Context.ResolveMediaUrlAsync(attachment.Url, cancellationToken));
+                .Append(await Context.ResolveAssetUrlAsync(attachment.Url, cancellationToken));
         }
 
         await _writer.WriteAsync(CsvEncode(buffer.ToString()));
@@ -84,7 +86,7 @@ internal partial class CsvMessageWriter : MessageWriter
         await _writer.WriteAsync(',');
 
         // Message content
-        await _writer.WriteAsync(CsvEncode(FormatMarkdown(message.Content)));
+        await _writer.WriteAsync(CsvEncode(await FormatMarkdownAsync(message.Content, cancellationToken)));
         await _writer.WriteAsync(',');
 
         // Attachments

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

@@ -0,0 +1,22 @@
+using System;
+using DiscordChatExporter.Core.Discord.Data;
+using DiscordChatExporter.Core.Discord.Data.Embeds;
+
+namespace DiscordChatExporter.Core.Exporting.Writers.Html;
+
+internal static class MessageExtensions
+{
+    // Message content is hidden if it's a link to an embedded media
+    // https://github.com/Tyrrrz/DiscordChatExporter/issues/682
+    public static bool IsContentHidden(this Message message)
+    {
+        if (message.Embeds.Count != 1)
+            return false;
+
+        var embed = message.Embeds[0];
+
+        return
+            string.Equals(message.Content.Trim(), embed.Url, StringComparison.OrdinalIgnoreCase) &&
+            embed.Kind is EmbedKind.Image or EmbedKind.Gifv;
+    }
+}

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

@@ -1,60 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using DiscordChatExporter.Core.Discord.Data;
-
-namespace DiscordChatExporter.Core.Exporting.Writers.Html;
-
-// Used for grouping contiguous messages in HTML export
-internal partial class MessageGroup
-{
-    public User Author { get; }
-
-    public DateTimeOffset Timestamp { get; }
-
-    public IReadOnlyList<Message> Messages { get; }
-
-    public MessageReference? Reference { get; }
-
-    public Message? ReferencedMessage {get; }
-
-    public MessageGroup(
-        User author,
-        DateTimeOffset timestamp,
-        MessageReference? reference,
-        Message? referencedMessage,
-        IReadOnlyList<Message> messages)
-    {
-        Author = author;
-        Timestamp = timestamp;
-        Reference = reference;
-        ReferencedMessage = referencedMessage;
-        Messages = messages;
-    }
-}
-
-internal partial class MessageGroup
-{
-    public static bool CanJoin(Message message1, Message message2) =>
-        // Must be from the same author
-        message1.Author.Id == message2.Author.Id &&
-        // Author's name must not have changed between messages
-        string.Equals(message1.Author.FullName, message2.Author.FullName, StringComparison.Ordinal) &&
-        // Duration between messages must be 7 minutes or less
-        (message2.Timestamp - message1.Timestamp).Duration().TotalMinutes <= 7 &&
-        // Other message must not be a reply
-        message2.Reference is null;
-
-    public static MessageGroup Join(IReadOnlyList<Message> messages)
-    {
-        var first = messages.First();
-
-        return new MessageGroup(
-            first.Author,
-            first.Timestamp,
-            first.Reference,
-            first.ReferencedMessage,
-            messages
-        );
-    }
-}

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

@@ -1,446 +1,539 @@
 @using System
+@using System.Collections.Generic
 @using System.Linq
+@using System.Threading
 @using System.Threading.Tasks
 @using DiscordChatExporter.Core.Discord.Data
-@using DiscordChatExporter.Core.Exporting.Writers.Html;
+@using DiscordChatExporter.Core.Discord.Data.Embeds
+@using DiscordChatExporter.Core.Exporting
+@using DiscordChatExporter.Core.Exporting.Writers.Html
+@using DiscordChatExporter.Core.Exporting.Writers.MarkdownVisitors
+@using DiscordChatExporter.Core.Utils.Extensions
 
-@namespace DiscordChatExporter.Core.Exporting.Writers.Html
-@inherits MiniRazor.TemplateBase<MessageGroupTemplateContext>
+@inherits RazorBlade.HtmlTemplate
+
+@functions {
+    public required ExportContext ExportContext { get; init; }
+
+    public required IReadOnlyList<Message> Messages { get; init; }
+}
 
 @{
-    string FormatDate(DateTimeOffset date) => Model.ExportContext.FormatDate(date);
+    ValueTask<string> ResolveAssetUrlAsync(string url) =>
+        ExportContext.ResolveAssetUrlAsync(url, CancellationToken);
 
-    string FormatMarkdown(string markdown) => Model.FormatMarkdown(markdown);
+    string FormatDate(DateTimeOffset date) =>
+        ExportContext.FormatDate(date);
 
-    string FormatEmbedMarkdown(string markdown) => Model.FormatMarkdown(markdown, false);
+    ValueTask<string> FormatMarkdownAsync(string markdown) =>
+        HtmlMarkdownVisitor.FormatAsync(ExportContext, markdown, true, CancellationToken);
 
-    ValueTask<string> ResolveUrlAsync(string url) => Model.ExportContext.ResolveMediaUrlAsync(url);
+    ValueTask<string> FormatEmbedMarkdownAsync(string markdown) =>
+        HtmlMarkdownVisitor.FormatAsync(ExportContext, markdown, false, CancellationToken);
 
-    var userMember = Model.ExportContext.TryGetMember(Model.MessageGroup.Author.Id);
+    var firstMessage = Messages.First();
 
-    var userColor = Model.ExportContext.TryGetUserColor(Model.MessageGroup.Author.Id);
+    var userMember = ExportContext.TryGetMember(firstMessage.Author.Id);
 
-    var userColorStyle = userColor is not null
-        ? $"color: rgb({userColor?.R},{userColor?.G},{userColor?.B})"
+    var userColor = ExportContext.TryGetUserColor(firstMessage.Author.Id);
+
+    var userNick = firstMessage.Author.IsBot
+        ? firstMessage.Author.Name
+        : userMember?.Nick ?? firstMessage.Author.Name;
+
+    var referencedUserMember = firstMessage.ReferencedMessage is not null
+        ? ExportContext.TryGetMember(firstMessage.ReferencedMessage.Author.Id)
         : null;
 
-    var userNick = Model.MessageGroup.Author.IsBot
-        ? Model.MessageGroup.Author.Name
-        : userMember?.Nick ?? Model.MessageGroup.Author.Name;
-
-    var referencedUserMember = Model.MessageGroup.ReferencedMessage is not null
-        ? Model.ExportContext.TryGetMember(Model.MessageGroup.ReferencedMessage.Author.Id)
+    var referencedUserColor = firstMessage.ReferencedMessage is not null
+        ? ExportContext.TryGetUserColor(firstMessage.ReferencedMessage.Author.Id)
         : null;
 
-    var referencedUserColor = Model.MessageGroup.ReferencedMessage is not null
-        ? Model.ExportContext.TryGetUserColor(Model.MessageGroup.ReferencedMessage.Author.Id)
-        : null;
-
-    var referencedUserColorStyle = referencedUserColor is not null
-        ? $"color: rgb({referencedUserColor?.R},{referencedUserColor?.G},{referencedUserColor?.B})"
-        : null;
-
-    var referencedUserNick = Model.MessageGroup.ReferencedMessage is not null
-        ? Model.MessageGroup.ReferencedMessage.Author.IsBot
-            ? Model.MessageGroup.ReferencedMessage.Author.Name
-            : referencedUserMember?.Nick ?? Model.MessageGroup.ReferencedMessage.Author.Name
+    var referencedUserNick = firstMessage.ReferencedMessage is not null
+        ? firstMessage.ReferencedMessage.Author.IsBot
+            ? firstMessage.ReferencedMessage.Author.Name
+            : referencedUserMember?.Nick ?? firstMessage.ReferencedMessage.Author.Name
         : null;
 }
 
 <div class="chatlog__message-group">
-    @{/* Referenced message */}
-    @if (Model.MessageGroup.Reference is not null)
-    {
-        <div class="chatlog__reference-symbol"></div>
-        <div class="chatlog__reference">
-            @if (Model.MessageGroup.ReferencedMessage is not null)
+@foreach (var (message, i) in Messages.WithIndex())
+{
+    var isFirst = i == 0;
+
+    <div id="chatlog__message-container-@message.Id" class="chatlog__message-container @(message.IsPinned ? "chatlog__message-container--pinned" : null)" data-message-id="@message.Id">
+        <div class="chatlog__message">
+            @{/* System notification */}
+            @if (message.Kind.IsSystemNotification())
             {
-                <img class="chatlog__reference-avatar" src="@await ResolveUrlAsync(Model.MessageGroup.ReferencedMessage.Author.AvatarUrl)" alt="Avatar" loading="lazy">
-                <span class="chatlog__reference-name" title="@Model.MessageGroup.ReferencedMessage.Author.FullName" style="@referencedUserColorStyle">@referencedUserNick</span>
-                <div class="chatlog__reference-content">
-                    <span class="chatlog__reference-link" onclick="scrollToMessage(event, '@Model.MessageGroup.ReferencedMessage.Id')">
-                        @if (!string.IsNullOrWhiteSpace(Model.MessageGroup.ReferencedMessage.Content))
+                // System notifications are grouped even if the message author is different.
+                // That's why we have to update the user values with the author of the current message.
+                userMember = ExportContext.TryGetMember(message.Author.Id);
+                userColor = ExportContext.TryGetUserColor(message.Author.Id);
+                userNick = message.Author.IsBot
+                    ? message.Author.Name
+                    : userMember?.Nick ?? message.Author.Name;
+
+                <div class="chatlog__message-aside">
+                    <svg class="chatlog__system-notification-icon"><use href="#@message.Kind.ToString().ToDashCase().ToLowerInvariant()-icon"></use></svg>
+                </div>
+
+                <div class="chatlog__message-primary">
+                    @{/* Author name */}
+                    <span class="chatlog__system-notification-author" style="@(userColor is not null ? $"color: rgb({userColor.Value.R}, {userColor.Value.G}, {userColor.Value.B})" : null)" title="@message.Author.FullName" data-user-id="@message.Author.Id">@userNick</span>
+
+                    @{/* System notification content */}
+                    <span class="chatlog__system-notification-content">
+                        @if (message.Kind == MessageKind.ChannelPinnedMessage && message.Reference is not null)
                         {
-                            @Raw(FormatEmbedMarkdown(Model.MessageGroup.ReferencedMessage.Content))
-                        }
-                        else if (Model.MessageGroup.ReferencedMessage.Attachments.Any() || Model.MessageGroup.ReferencedMessage.Embeds.Any())
-                        {
-                            <em>Click to see attachment</em> <span>🖼️</span>
+                            <span> pinned</span>
+                            <a class="chatlog__system-notification-link" href="#chatlog__message-container-@message.Reference.MessageId"> a message</a>
+                            <span> to this channel.</span>
                         }
                         else
                         {
-                            <em>Click to see original message</em>
+                            <span>@message.Content.ToLowerInvariant()</span>
                         }
                     </span>
 
-                    @if (Model.MessageGroup.ReferencedMessage.EditedTimestamp is not null)
-                    {
-                        <span class="chatlog__reference-edited-timestamp" title="@FormatDate(Model.MessageGroup.ReferencedMessage.EditedTimestamp.Value)">(edited)</span>
-                    }
+                    @{/* Timestamp */}
+                    <span class="chatlog__system-notification-timestamp">
+                        <a href="#chatlog__message-container-@message.Id">@FormatDate(message.Timestamp)</a>
+                    </span>
                 </div>
             }
+            // Regular message
             else
             {
-                <span class="chatlog__reference-unknown">
-                    Original message was deleted or could not be loaded.
-                </span>
-            }
-        </div>
-    }
+                <div class="chatlog__message-aside">
+                    @if (isFirst)
+                    {
+                        // Reference symbol
+                        if (message.Reference is not null)
+                        {
+                            <div class="chatlog__reference-symbol"></div>
+                        }
 
-    @{/* Avatar */}
-    <div class="chatlog__author-avatar-container">
-        <img class="chatlog__author-avatar" src="@await ResolveUrlAsync(Model.MessageGroup.Author.AvatarUrl)" alt="Avatar" loading="lazy">
-    </div>
+                        // Avatar
+                        <img class="chatlog__avatar" src="@await ResolveAssetUrlAsync(message.Author.AvatarUrl)" alt="Avatar" loading="lazy">
+                    }
+                    else
+                    {
+                        <div class="chatlog__short-timestamp" title="@FormatDate(message.Timestamp)">@message.Timestamp.ToLocalString("t")</div>
+                    }
+                </div>
 
-    <div class="chatlog__messages">
-        @{/* Author name */}
-        <span class="chatlog__author-name" title="@Model.MessageGroup.Author.FullName" data-user-id="@Model.MessageGroup.Author.Id" style="@userColorStyle">@userNick</span>
+                <div class="chatlog__message-primary">
+                    @if (isFirst)
+                    {
+                        // Reference
+                        if (message.Reference is not null)
+                        {
+                            <div class="chatlog__reference">
+                                @if (message.ReferencedMessage is not null)
+                                {
+                                    <img class="chatlog__reference-avatar" src="@await ResolveAssetUrlAsync(message.ReferencedMessage.Author.AvatarUrl)" alt="Avatar" loading="lazy">
+                                    <div class="chatlog__reference-author" style="@(referencedUserColor is not null ? $"color: rgb({referencedUserColor.Value.R}, {referencedUserColor.Value.G}, {referencedUserColor.Value.B})" : null)" title="@message.ReferencedMessage.Author.FullName">@referencedUserNick</div>
+                                    <div class="chatlog__reference-content">
+                                        <span class="chatlog__reference-link" onclick="scrollToMessage(event, '@message.ReferencedMessage.Id')">
+                                            @if (!string.IsNullOrWhiteSpace(message.ReferencedMessage.Content) && !message.ReferencedMessage.IsContentHidden())
+                                            {
+                                                <!--wmm:ignore-->@Html.Raw(await FormatEmbedMarkdownAsync(message.ReferencedMessage.Content))<!--/wmm:ignore-->
+                                            }
+                                            else if (message.ReferencedMessage.Attachments.Any() || message.ReferencedMessage.Embeds.Any())
+                                            {
+                                                <em>Click to see attachment</em>
+                                                <span>🖼️</span>
+                                            }
+                                            else
+                                            {
+                                                <em>Click to see original message</em>
+                                            }
+                                        </span>
 
-        @{/* Bot tag */}
-        @if (Model.MessageGroup.Author.IsBot)
-        {
-            <span class="chatlog__bot-tag">BOT</span>
-        }
+                                        @if (message.ReferencedMessage.EditedTimestamp is not null)
+                                        {
+                                            <span class="chatlog__reference-edited-timestamp" title="@FormatDate(message.ReferencedMessage.EditedTimestamp.Value)">(edited)</span>
+                                        }
+                                    </div>
+                                }
+                                else
+                                {
+                                    <div class="chatlog__reference-unknown">
+                                        Original message was deleted or could not be loaded.
+                                    </div>
+                                }
+                            </div>
+                        }
 
-        @{/* Message timestamp */}
-        <span class="chatlog__timestamp">@FormatDate(Model.MessageGroup.Timestamp)</span>
+                        // Header
+                        <div class="chatlog__header">
+                            @{/* Author name */}
+                            <span class="chatlog__author" style="@(userColor is not null ? $"color: rgb({userColor.Value.R}, {userColor.Value.G}, {userColor.Value.B})" : null)" title="@message.Author.FullName" data-user-id="@message.Author.Id">@userNick</span>
 
-        @{/* Messages in a group */}
-        @foreach (var message in Model.MessageGroup.Messages)
-        {
-            <div class="chatlog__message @(message.IsPinned ? "chatlog__message--pinned" : null)" data-message-id="@message.Id" id="message-@message.Id" title="Message sent: @FormatDate(message.Timestamp)">
-                @if (!string.IsNullOrWhiteSpace(message.Content) || message.EditedTimestamp is not null)
-                {
-                    <div class="chatlog__content">
-                        <div class="markdown">
-                            @{/* Message content */}
-                            <span class="preserve-whitespace">@Raw(FormatMarkdown(message.Content))</span>
+                            @{/* Bot label */}
+                            @if (message.Author.IsBot)
+                            {
+                                <span class="chatlog__bot-label">BOT</span>
+                            }
 
-                            @{/* Edit timestamp */}
+                            @{/* Timestamp */}
+                            <span class="chatlog__timestamp"><a href="#chatlog__message-container-@message.Id">@FormatDate(message.Timestamp)</a></span>
+                        </div>
+                    }
+
+                    @{/* Content */}
+                    @if ((!string.IsNullOrWhiteSpace(message.Content) && !message.IsContentHidden()) || message.EditedTimestamp is not null)
+                    {
+                        <div class="chatlog__content chatlog__markdown">
+                            @{/* Text */}
+                            @if (!string.IsNullOrWhiteSpace(message.Content) && !message.IsContentHidden())
+                            {
+                                <span class="chatlog__markdown-preserve"><!--wmm:ignore-->@Html.Raw(await FormatMarkdownAsync(message.Content))<!--/wmm:ignore--></span>
+                            }
+
+                            @{/* Edited timestamp */}
                             @if (message.EditedTimestamp is not null)
                             {
                                 <span class="chatlog__edited-timestamp" title="@FormatDate(message.EditedTimestamp.Value)">(edited)</span>
                             }
                         </div>
-                    </div>
-                }
-
-                @{/* Attachments */}
-                @foreach (var attachment in message.Attachments)
-                {
-                    <div class="chatlog__attachment @(attachment.IsSpoiler ? "chatlog__attachment--hidden" : "")" onclick="@(attachment.IsSpoiler ? "showSpoiler(event, this)" : "")">
-                        @{/* Spoiler caption */}
-                        @if (attachment.IsSpoiler)
-                        {
-                            <div class="chatlog__attachment-spoiler-caption">SPOILER</div>
-                        }
-
-                        @{/* Attachment preview */}
-                        @if (attachment.IsImage)
-                        {
-                            <a href="@await ResolveUrlAsync(attachment.Url)">
-                                <img class="chatlog__attachment-media" src="@await ResolveUrlAsync(attachment.Url)" alt="Image attachment" title="@($"Image: {attachment.FileName} ({attachment.FileSize})")" loading="lazy">
-                            </a>
-                        }
-                        else if (attachment.IsVideo)
-                        {
-                            <video class="chatlog__attachment-media" controls>
-                                <source src="@await ResolveUrlAsync(attachment.Url)" alt="Video attachment" title="@($"Video: {attachment.FileName} ({attachment.FileSize})")">
-                            </video>
-                        }
-                        else if (attachment.IsAudio)
-                        {
-                            <audio class="chatlog__attachment-media" controls>
-                                <source src="@await ResolveUrlAsync(attachment.Url)" alt="Audio attachment" title="@($"Audio: {attachment.FileName} ({attachment.FileSize})")">
-                            </audio>
-                        }
-                        else
-                        {
-                            <div class="chatlog__attachment-generic">
-                                <svg class="chatlog__attachment-generic-icon">
-                                    <use href="#icon-attachment" />
-                                </svg>
-                                <div class="chatlog__attachment-generic-name">
-                                    <a href="@await ResolveUrlAsync(attachment.Url)">
-                                        @attachment.FileName
-                                    </a>
-                                </div>
-                                <div class="chatlog__attachment-generic-size">
-                                    @attachment.FileSize
-                                </div>
-                            </div>
-                        }
-                    </div>
-                }
-
-                @{/* Embeds */}
-                @foreach (var embed in message.Embeds)
-                {
-                    // Plain image embed
-                    if (embed.TryGetPlainImage() is { } plainImageEmbed)
-                    {
-                        <div class="chatlog__embed">
-                            <a href="@await ResolveUrlAsync(plainImageEmbed.Url)">
-                                <img class="chatlog__embed-plainimage" src="@await ResolveUrlAsync(plainImageEmbed.Url)" alt="Embedded image" loading="lazy">
-                            </a>
-                        </div>
                     }
-                    // Spotify embed
-                    else if (embed.TryGetSpotifyTrack() is { } spotifyTrackEmbed)
+
+                    @{/* Attachments */}
+                    @foreach (var attachment in message.Attachments)
                     {
-                        <div class="chatlog__embed">
-                            <div class="chatlog__embed-spotify-container">
-                                <iframe class="chatlog__embed-spotify" src="@spotifyTrackEmbed.Url" width="400" height="80" allowtransparency="true" allow="encrypted-media"></iframe>
-                            </div>
-                        </div>
-                    }
-                    // YouTube embed
-                    else if (embed.TryGetYouTubeVideo() is { } youTubeVideoEmbed)
-                    {
-                        <div class="chatlog__embed">
-                            @{/* Color pill */}
-                            @if (embed.Color is not null)
+                        <div class="chatlog__attachment @(attachment.IsSpoiler ? "chatlog__attachment--hidden" : null)" onclick="@(attachment.IsSpoiler ? "showSpoiler(event, this)" : null)">
+                            @{/* Spoiler caption */}
+                            @if (attachment.IsSpoiler)
                             {
-                                <div class="chatlog__embed-color-pill" style="background-color: rgba(@embed.Color?.R,@embed.Color?.G,@embed.Color?.B,@embed.Color?.A)"></div>
+                                <div class="chatlog__attachment-spoiler-caption">SPOILER</div>
+                            }
+
+                            @{/* Attachment preview */}
+                            @if (attachment.IsImage)
+                            {
+                                <a href="@await ResolveAssetUrlAsync(attachment.Url)">
+                                    <img class="chatlog__attachment-media" src="@await ResolveAssetUrlAsync(attachment.Url)" alt="@(attachment.Description ?? "Image attachment")" title="Image: @attachment.FileName (@attachment.FileSize)" loading="lazy">
+                                </a>
+                            }
+                            else if (attachment.IsVideo)
+                            {
+                                <video class="chatlog__attachment-media" controls>
+                                    <source src="@await ResolveAssetUrlAsync(attachment.Url)" alt="@(attachment.Description ?? "Video attachment")" title="Video: @attachment.FileName (@attachment.FileSize)">
+                                </video>
+                            }
+                            else if (attachment.IsAudio)
+                            {
+                                <audio class="chatlog__attachment-media" controls>
+                                    <source src="@await ResolveAssetUrlAsync(attachment.Url)" alt="@(attachment.Description ?? "Audio attachment")" title="Audio: @attachment.FileName (@attachment.FileSize)">
+                                </audio>
                             }
                             else
                             {
-                                <div class="chatlog__embed-color-pill chatlog__embed-color-pill--default"></div>
+                                <div class="chatlog__attachment-generic">
+                                    <svg class="chatlog__attachment-generic-icon">
+                                        <use href="#attachment-icon"/>
+                                    </svg>
+                                    <div class="chatlog__attachment-generic-name">
+                                        <a href="@await ResolveAssetUrlAsync(attachment.Url)">
+                                            @attachment.FileName
+                                        </a>
+                                    </div>
+                                    <div class="chatlog__attachment-generic-size">
+                                        @attachment.FileSize
+                                    </div>
+                                </div>
                             }
+                        </div>
+                    }
 
-                            <div class="chatlog__embed-content-container">
-                                <div class="chatlog__embed-content">
-                                    <div class="chatlog__embed-text">
-                                        @{/* Embed author */}
-                                        @if (embed.Author is not null)
-                                        {
-                                            <div class="chatlog__embed-author">
-                                                @if (!string.IsNullOrWhiteSpace(embed.Author.IconUrl))
-                                                {
-                                                    <img class="chatlog__embed-author-icon" src="@await ResolveUrlAsync(embed.Author.IconProxyUrl ?? embed.Author.IconUrl)" alt="Author icon" loading="lazy" onerror="this.style.visibility='hidden'">
-                                                }
+                    @{/* Embeds */}
+                    @foreach (var embed in message.Embeds)
+                    {
+                        // Spotify embed
+                        if (embed.TryGetSpotifyTrack() is { } spotifyTrackEmbed)
+                        {
+                            <div class="chatlog__embed">
+                                <div class="chatlog__embed-spotify-container">
+                                    <iframe class="chatlog__embed-spotify" src="@spotifyTrackEmbed.Url" width="400" height="80" allowtransparency="true" allow="encrypted-media"></iframe>
+                                </div>
+                            </div>
+                        }
+                        // YouTube embed
+                        else if (embed.TryGetYouTubeVideo() is { } youTubeVideoEmbed)
+                        {
+                            <div class="chatlog__embed">
+                                @{/* Color pill */}
+                                @if (embed.Color is not null)
+                                {
+                                    <div class="chatlog__embed-color-pill" style="background-color: rgba(@embed.Color.Value.R, @embed.Color.Value.G, @embed.Color.Value.B, @embed.Color.Value.A)"></div>
+                                }
+                                else
+                                {
+                                    <div class="chatlog__embed-color-pill chatlog__embed-color-pill--default"></div>
+                                }
 
-                                                @if (!string.IsNullOrWhiteSpace(embed.Author.Name))
-                                                {
-                                                    <span class="chatlog__embed-author-name">
-                                                        @if (!string.IsNullOrWhiteSpace(embed.Author.Url))
+                                <div class="chatlog__embed-content-container">
+                                    <div class="chatlog__embed-content">
+                                        <div class="chatlog__embed-text">
+                                            @{/* Embed author */}
+                                            @if (embed.Author is not null)
+                                            {
+                                                <div class="chatlog__embed-author-container">
+                                                    @if (!string.IsNullOrWhiteSpace(embed.Author.IconUrl))
+                                                    {
+                                                        <img class="chatlog__embed-author-icon" src="@await ResolveAssetUrlAsync(embed.Author.IconProxyUrl ?? embed.Author.IconUrl)" alt="Author icon" loading="lazy" onerror="this.style.visibility='hidden'">
+                                                    }
+
+                                                    @if (!string.IsNullOrWhiteSpace(embed.Author.Name))
+                                                    {
+                                                        if (!string.IsNullOrWhiteSpace(embed.Author.Url))
                                                         {
-                                                            <a class="chatlog__embed-author-name-link" href="@embed.Author.Url">@embed.Author.Name</a>
+                                                            <a class="chatlog__embed-author-link" href="@embed.Author.Url">
+                                                                <div class="chatlog__embed-author">@embed.Author.Name</div>
+                                                            </a>
                                                         }
                                                         else
                                                         {
-                                                            @embed.Author.Name
+                                                            <div class="chatlog__embed-author">@embed.Author.Name</div>
                                                         }
-                                                    </span>
-                                                }
-                                            </div>
-                                        }
+                                                    }
+                                                </div>
+                                            }
 
-                                        @{/* Embed title */}
-                                        @if (!string.IsNullOrWhiteSpace(embed.Title))
-                                        {
-                                            <div class="chatlog__embed-title">
-                                                @if (!string.IsNullOrWhiteSpace(embed.Url))
-                                                {
-                                                    <a class="chatlog__embed-title-link" href="@embed.Url">
-                                                        <div class="markdown preserve-whitespace">@Raw(FormatEmbedMarkdown(embed.Title))</div>
-                                                    </a>
-                                                }
-                                                else
-                                                {
-                                                    <div class="markdown preserve-whitespace">@Raw(FormatEmbedMarkdown(embed.Title))</div>
-                                                }
-                                            </div>
-                                        }
+                                            @{/* Embed title */}
+                                            @if (!string.IsNullOrWhiteSpace(embed.Title))
+                                            {
+                                                <div class="chatlog__embed-title">
+                                                    @if (!string.IsNullOrWhiteSpace(embed.Url))
+                                                    {
+                                                        <a class="chatlog__embed-title-link" href="@embed.Url">
+                                                            <div class="chatlog__markdown chatlog__markdown-preserve"><!--wmm:ignore-->@Html.Raw(await FormatEmbedMarkdownAsync(embed.Title))<!--/wmm:ignore--></div>
+                                                        </a>
+                                                    }
+                                                    else
+                                                    {
+                                                        <div class="chatlog__markdown chatlog__markdown-preserve"><!--wmm:ignore-->@Html.Raw(await FormatEmbedMarkdownAsync(embed.Title))<!--/wmm:ignore--></div>
+                                                    }
+                                                </div>
+                                            }
 
-                                        @{/* Video player */}
-                                        <div class="chatlog__embed-youtube-container">
-                                            <iframe class="chatlog__embed-youtube" src="@youTubeVideoEmbed.Url" width="400" height="225"></iframe>
+                                            @{/* Video player */}
+                                            <div class="chatlog__embed-youtube-container">
+                                                <iframe class="chatlog__embed-youtube" src="@youTubeVideoEmbed.Url" width="400" height="225"></iframe>
+                                            </div>
                                         </div>
                                     </div>
                                 </div>
                             </div>
-                        </div>
-                    }
-                    // Generic embed
-                    else
-                    {
-                        <div class="chatlog__embed">
-                            @{/* Color pill */}
-                            @if (embed.Color is not null)
-                            {
-                                <div class="chatlog__embed-color-pill" style="background-color: rgba(@embed.Color?.R,@embed.Color?.G,@embed.Color?.B,@embed.Color?.A)"></div>
-                            }
-                            else
-                            {
-                                <div class="chatlog__embed-color-pill chatlog__embed-color-pill--default"></div>
-                            }
+                        }
+                        // Generic image embed
+                        else if (embed.Kind == EmbedKind.Image && !string.IsNullOrWhiteSpace(embed.Url))
+                        {
+                            <div class="chatlog__embed">
+                                <a href="@await ResolveAssetUrlAsync(embed.Url)">
+                                    <img class="chatlog__embed-generic-image" src="@await ResolveAssetUrlAsync(embed.Url)" alt="Embedded image" loading="lazy">
+                                </a>
+                            </div>
+                        }
+                        // Generic gifv embed
+                        else if (embed.Kind == EmbedKind.Gifv && !string.IsNullOrWhiteSpace(embed.Video?.Url))
+                        {
+                            <div class="chatlog__embed">
+                                <video class="chatlog__embed-generic-gifv" loop width="@embed.Video.Width" height="@embed.Video.Height" onmouseover="this.play()" onmouseout="this.pause()">
+                                    <source src="@await ResolveAssetUrlAsync(embed.Video.ProxyUrl ?? embed.Video.Url)" alt="Embedded video">
+                                </video>
+                            </div>
+                        }
+                        // Rich embed
+                        else
+                        {
+                            <div class="chatlog__embed">
+                                @{/* Color pill */}
+                                @if (embed.Color is not null)
+                                {
+                                    <div class="chatlog__embed-color-pill" style="background-color: rgba(@embed.Color.Value.R, @embed.Color.Value.G, @embed.Color.Value.B, @embed.Color.Value.A)"></div>
+                                }
+                                else
+                                {
+                                    <div class="chatlog__embed-color-pill chatlog__embed-color-pill--default"></div>
+                                }
 
-                            <div class="chatlog__embed-content-container">
-                                <div class="chatlog__embed-content">
-                                    <div class="chatlog__embed-text">
-                                        @{/* Embed author */}
-                                        @if (embed.Author is not null)
-                                        {
-                                            <div class="chatlog__embed-author">
-                                                @if (!string.IsNullOrWhiteSpace(embed.Author.IconUrl))
-                                                {
-                                                    <img class="chatlog__embed-author-icon" src="@await ResolveUrlAsync(embed.Author.IconProxyUrl ?? embed.Author.IconUrl)" alt="Author icon" loading="lazy" onerror="this.style.visibility='hidden'">
-                                                }
+                                <div class="chatlog__embed-content-container">
+                                    <div class="chatlog__embed-content">
+                                        <div class="chatlog__embed-text">
+                                            @{/* Embed author */}
+                                            @if (embed.Author is not null)
+                                            {
+                                                <div class="chatlog__embed-author-container">
+                                                    @if (!string.IsNullOrWhiteSpace(embed.Author.IconUrl))
+                                                    {
+                                                        <img class="chatlog__embed-author-icon" src="@await ResolveAssetUrlAsync(embed.Author.IconProxyUrl ?? embed.Author.IconUrl)" alt="Author icon" loading="lazy" onerror="this.style.visibility='hidden'">
+                                                    }
 
-                                                @if (!string.IsNullOrWhiteSpace(embed.Author.Name))
-                                                {
-                                                    <span class="chatlog__embed-author-name">
-                                                        @if (!string.IsNullOrWhiteSpace(embed.Author.Url))
+                                                    @if (!string.IsNullOrWhiteSpace(embed.Author.Name))
+                                                    {
+                                                        if (!string.IsNullOrWhiteSpace(embed.Author.Url))
                                                         {
-                                                            <a class="chatlog__embed-author-name-link" href="@embed.Author.Url">@embed.Author.Name</a>
+                                                            <a class="chatlog__embed-author-link" href="@embed.Author.Url">
+                                                                <div class="chatlog__embed-author">@embed.Author.Name</div>
+                                                            </a>
                                                         }
                                                         else
                                                         {
-                                                            @embed.Author.Name
+                                                            <div class="chatlog__embed-author">@embed.Author.Name</div>
                                                         }
-                                                    </span>
-                                                }
-                                            </div>
-                                        }
+                                                    }
+                                                </div>
+                                            }
 
-                                        @{/* Embed title */}
-                                        @if (!string.IsNullOrWhiteSpace(embed.Title))
+                                            @{/* Embed title */}
+                                            @if (!string.IsNullOrWhiteSpace(embed.Title))
+                                            {
+                                                <div class="chatlog__embed-title">
+                                                    @if (!string.IsNullOrWhiteSpace(embed.Url))
+                                                    {
+                                                        <a class="chatlog__embed-title-link" href="@embed.Url">
+                                                            <div class="chatlog__markdown chatlog__markdown-preserve"><!--wmm:ignore-->@Html.Raw(await FormatEmbedMarkdownAsync(embed.Title))<!--/wmm:ignore--></div>
+                                                        </a>
+                                                    }
+                                                    else
+                                                    {
+                                                        <div class="chatlog__markdown chatlog__markdown-preserve"><!--wmm:ignore-->@Html.Raw(await FormatEmbedMarkdownAsync(embed.Title))<!--/wmm:ignore--></div>
+                                                    }
+                                                </div>
+                                            }
+
+                                            @{/* Embed description */}
+                                            @if (!string.IsNullOrWhiteSpace(embed.Description))
+                                            {
+                                                <div class="chatlog__embed-description">
+                                                    <div class="chatlog__markdown chatlog__markdown-preserve"><!--wmm:ignore-->@Html.Raw(await FormatEmbedMarkdownAsync(embed.Description))<!--/wmm:ignore--></div>
+                                                </div>
+                                            }
+
+                                            @{/* Embed fields */}
+                                            @if (embed.Fields.Any())
+                                            {
+                                                <div class="chatlog__embed-fields">
+                                                    @foreach (var field in embed.Fields)
+                                                    {
+                                                        <div class="chatlog__embed-field @(field.IsInline ? "chatlog__embed-field--inline" : null)">
+                                                            @if (!string.IsNullOrWhiteSpace(field.Name))
+                                                            {
+                                                                <div class="chatlog__embed-field-name">
+                                                                    <div class="chatlog__markdown chatlog__markdown-preserve"><!--wmm:ignore-->@Html.Raw(await FormatEmbedMarkdownAsync(field.Name))<!--/wmm:ignore--></div>
+                                                                </div>
+                                                            }
+
+                                                            @if (!string.IsNullOrWhiteSpace(field.Value))
+                                                            {
+                                                                <div class="chatlog__embed-field-value">
+                                                                    <div class="chatlog__markdown chatlog__markdown-preserve"><!--wmm:ignore-->@Html.Raw(await FormatEmbedMarkdownAsync(field.Value))<!--/wmm:ignore--></div>
+                                                                </div>
+                                                            }
+                                                        </div>
+                                                    }
+                                                </div>
+                                            }
+                                        </div>
+
+                                        @{/* Embed content */}
+                                        @if (embed.Thumbnail is not null && !string.IsNullOrWhiteSpace(embed.Thumbnail.Url))
                                         {
-                                            <div class="chatlog__embed-title">
-                                                @if (!string.IsNullOrWhiteSpace(embed.Url))
-                                                {
-                                                    <a class="chatlog__embed-title-link" href="@embed.Url">
-                                                        <div class="markdown preserve-whitespace">@Raw(FormatEmbedMarkdown(embed.Title))</div>
-                                                    </a>
-                                                }
-                                                else
-                                                {
-                                                    <div class="markdown preserve-whitespace">@Raw(FormatEmbedMarkdown(embed.Title))</div>
-                                                }
-                                            </div>
-                                        }
-
-                                        @{/* Embed description */}
-                                        @if (!string.IsNullOrWhiteSpace(embed.Description))
-                                        {
-                                            <div class="chatlog__embed-description">
-                                                <div class="markdown preserve-whitespace">@Raw(FormatEmbedMarkdown(embed.Description))</div>
-                                            </div>
-                                        }
-
-                                        @{/* Embed fields */}
-                                        @if (embed.Fields.Any())
-                                        {
-                                            <div class="chatlog__embed-fields">
-                                                @foreach (var field in embed.Fields)
-                                                {
-                                                    <div class="chatlog__embed-field @(field.IsInline ? "chatlog__embed-field--inline" : null)">
-                                                        @if (!string.IsNullOrWhiteSpace(field.Name))
-                                                        {
-                                                            <div class="chatlog__embed-field-name">
-                                                                <div class="markdown preserve-whitespace">@Raw(FormatEmbedMarkdown(field.Name))</div>
-                                                            </div>
-                                                        }
-
-                                                        @if (!string.IsNullOrWhiteSpace(field.Value))
-                                                        {
-                                                            <div class="chatlog__embed-field-value">
-                                                                <div class="markdown preserve-whitespace">@Raw(FormatEmbedMarkdown(field.Value))</div>
-                                                            </div>
-                                                        }
-                                                    </div>
-                                                }
+                                            <div class="chatlog__embed-thumbnail-container">
+                                                <a class="chatlog__embed-thumbnail-link" href="@await ResolveAssetUrlAsync(embed.Thumbnail.ProxyUrl ?? embed.Thumbnail.Url)">
+                                                    <img class="chatlog__embed-thumbnail" src="@await ResolveAssetUrlAsync(embed.Thumbnail.ProxyUrl ?? embed.Thumbnail.Url)" alt="Thumbnail" loading="lazy">
+                                                </a>
                                             </div>
                                         }
                                     </div>
 
-                                    @{/* Embed content */}
-                                    @if (embed.Thumbnail is not null && !string.IsNullOrWhiteSpace(embed.Thumbnail.Url))
+                                    @{/* Embed images */}
+                                    @if (embed.Images.Any())
                                     {
-                                        <div class="chatlog__embed-thumbnail-container">
-                                            <a class="chatlog__embed-thumbnail-link" href="@await ResolveUrlAsync(embed.Thumbnail.ProxyUrl ?? embed.Thumbnail.Url)">
-                                                <img class="chatlog__embed-thumbnail" src="@await ResolveUrlAsync(embed.Thumbnail.ProxyUrl ?? embed.Thumbnail.Url)" alt="Thumbnail" loading="lazy">
-                                            </a>
+                                        <div class="chatlog__embed-images @(embed.Images.Count == 1 ? "chatlog__embed-images--single" : null)">
+                                            @foreach (var image in embed.Images)
+                                            {
+                                                if (!string.IsNullOrWhiteSpace(image.Url))
+                                                {
+                                                    <div class="chatlog__embed-image-container">
+                                                        <a class="chatlog__embed-image-link" href="@await ResolveAssetUrlAsync(image.ProxyUrl ?? image.Url)">
+                                                            <img class="chatlog__embed-image" src="@await ResolveAssetUrlAsync(image.ProxyUrl ?? image.Url)" alt="Image" loading="lazy">
+                                                        </a>
+                                                    </div>
+                                                }
+                                            }
+                                        </div>
+                                    }
+
+                                    @{/* Embed footer & icon */}
+                                    @if (embed.Footer is not null || embed.Timestamp is not null)
+                                    {
+                                        <div class="chatlog__embed-footer">
+                                            @{/* Footer icon */}
+                                            @if (!string.IsNullOrWhiteSpace(embed.Footer?.IconUrl))
+                                            {
+                                                <img class="chatlog__embed-footer-icon" src="@await ResolveAssetUrlAsync(embed.Footer.IconProxyUrl ?? embed.Footer.IconUrl)" alt="Footer icon" loading="lazy">
+                                            }
+
+                                            <span class="chatlog__embed-footer-text">
+                                                @{/* Footer text */}
+                                                @if (!string.IsNullOrWhiteSpace(embed.Footer?.Text))
+                                                {
+                                                    @embed.Footer.Text
+                                                }
+
+                                                @if (!string.IsNullOrWhiteSpace(embed.Footer?.Text) && embed.Timestamp is not null)
+                                                {
+                                                    @(" • ")
+                                                }
+
+                                                @{/* Embed timestamp */}
+                                                @if (embed.Timestamp is not null)
+                                                {
+                                                    @FormatDate(embed.Timestamp.Value)
+                                                }
+                                            </span>
                                         </div>
                                     }
                                 </div>
-
-                                @{/* Embed image */}
-                                @if (embed.Image is not null && !string.IsNullOrWhiteSpace(embed.Image.Url))
-                                {
-                                    <div class="chatlog__embed-image-container">
-                                        <a class="chatlog__embed-image-link" href="@await ResolveUrlAsync(embed.Image.ProxyUrl ?? embed.Image.Url)">
-                                            <img class="chatlog__embed-image" src="@await ResolveUrlAsync(embed.Image.ProxyUrl ?? embed.Image.Url)" alt="Image" loading="lazy">
-                                        </a>
-                                    </div>
-                                }
-
-                                @{/* Embed footer & icon */}
-                                @if (embed.Footer is not null || embed.Timestamp is not null)
-                                {
-                                    <div class="chatlog__embed-footer">
-                                        @{/* Footer icon */}
-                                        @if (!string.IsNullOrWhiteSpace(embed.Footer?.IconUrl))
-                                        {
-                                            <img class="chatlog__embed-footer-icon" src="@await ResolveUrlAsync(embed.Footer.IconProxyUrl ?? embed.Footer.IconUrl)" alt="Footer icon" loading="lazy">
-                                        }
-
-                                        <span class="chatlog__embed-footer-text">
-                                            @{/* Footer text */}
-                                            @if (!string.IsNullOrWhiteSpace(embed.Footer?.Text))
-                                            {
-                                                @embed.Footer.Text
-                                            }
-
-                                            @if (!string.IsNullOrWhiteSpace(embed.Footer?.Text) && embed.Timestamp is not null)
-                                            {
-                                                @(" • ")
-                                            }
-
-                                            @{/* Embed timestamp */}
-                                            @if (embed.Timestamp is not null)
-                                            {
-                                                @FormatDate(embed.Timestamp.Value)
-                                            }
-                                        </span>
-                                    </div>
-                                }
                             </div>
+                        }
+                    }
+
+                    @{/* Stickers */}
+                    @foreach (var sticker in message.Stickers)
+                    {
+                        <div class="chatlog__sticker" title="@sticker.Name">
+                            @if (sticker.Format is StickerFormat.Png or StickerFormat.PngAnimated)
+                            {
+                                <img class="chatlog__sticker--media" src="@await ResolveAssetUrlAsync(sticker.SourceUrl)" alt="Sticker">
+                            }
+                            else if (sticker.Format == StickerFormat.Lottie)
+                            {
+                                <div class="chatlog__sticker--media" data-source="@await ResolveAssetUrlAsync(sticker.SourceUrl)"></div>
+                            }
                         </div>
                     }
-                }
 
-                @{/* Stickers */}
-                @foreach (var sticker in message.Stickers)
-                {
-                    <div class="chatlog__sticker" title="@sticker.Name">
-                        @if (sticker.Format is StickerFormat.Png or StickerFormat.PngAnimated)
-                        {
-                            <img class="chatlog__sticker--media" src="@(await ResolveUrlAsync(sticker.SourceUrl))" alt="Sticker">
-                        }
-                        else if (sticker.Format == StickerFormat.Lottie)
-                        {
-                            <div class="chatlog__sticker--media" data-source="@(await ResolveUrlAsync(sticker.SourceUrl))"></div>
-                        }
-                    </div>
-                }
-
-                @{/* Message reactions */}
-                @if (message.Reactions.Any())
-                {
-                    <div class="chatlog__reactions">
-                        @foreach (var reaction in message.Reactions)
-                        {
-                            <div class="chatlog__reaction" title="@reaction.Emoji.Code">
-                                <img class="emoji emoji--small" alt="@reaction.Emoji.Name" src="@await ResolveUrlAsync(reaction.Emoji.ImageUrl)" loading="lazy">
-                                <span class="chatlog__reaction-count">@reaction.Count</span>
-                            </div>
-                        }
-                    </div>
-                }
-            </div>
-        }
+                    @{/* Message reactions */}
+                    @if (message.Reactions.Any())
+                    {
+                        <div class="chatlog__reactions">
+                            @foreach (var reaction in message.Reactions)
+                            {
+                                <div class="chatlog__reaction" title="@reaction.Emoji.Code">
+                                    <img class="chatlog__emoji chatlog__emoji--small" alt="@reaction.Emoji.Name" src="@await ResolveAssetUrlAsync(reaction.Emoji.ImageUrl)" loading="lazy">
+                                    <span class="chatlog__reaction-count">@reaction.Count</span>
+                                </div>
+                            }
+                        </div>
+                    }
+                </div>
+            }
+        </div>
     </div>
+}
 </div>

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

@@ -1,19 +0,0 @@
-using DiscordChatExporter.Core.Exporting.Writers.MarkdownVisitors;
-
-namespace DiscordChatExporter.Core.Exporting.Writers.Html;
-
-internal class MessageGroupTemplateContext
-{
-    public ExportContext ExportContext { get; }
-
-    public MessageGroup MessageGroup { get; }
-
-    public MessageGroupTemplateContext(ExportContext exportContext, MessageGroup messageGroup)
-    {
-        ExportContext = exportContext;
-        MessageGroup = messageGroup;
-    }
-
-    public string FormatMarkdown(string? markdown, bool isJumboAllowed = true) =>
-        HtmlMarkdownVisitor.Format(ExportContext, markdown ?? "", isJumboAllowed);
-}

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

@@ -1,13 +1,23 @@
-@using DiscordChatExporter.Core.Exporting.Writers.Html;
+@using System.Threading
+@using DiscordChatExporter.Core.Exporting
 
-@namespace DiscordChatExporter.Core.Exporting.Writers.Html
-@inherits MiniRazor.TemplateBase<PostambleTemplateContext>
+@inherits RazorBlade.HtmlTemplate
 
-@{/* Close elements opened by preamble */}
+@functions {
+    public required ExportContext ExportContext { get; init; }
+
+    public required long MessagesWritten { get; init; }
+}
+
+@{
+    /* Close elements opened by preamble */
+}
+<!--wmm:ignore-->
 </div>
+<!--/wmm:ignore-->
 
 <div class="postamble">
-    <div class="postamble__entry">Exported @Model.MessagesWritten.ToString("N0") message(s)</div>
+    <div class="postamble__entry">Exported @MessagesWritten.ToString("N0") message(s)</div>
 </div>
 
 </body>

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

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

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

@@ -1,19 +0,0 @@
-using DiscordChatExporter.Core.Exporting.Writers.MarkdownVisitors;
-
-namespace DiscordChatExporter.Core.Exporting.Writers.Html;
-
-internal class PreambleTemplateContext
-{
-    public ExportContext ExportContext { get; }
-
-    public string ThemeName { get; }
-
-    public PreambleTemplateContext(ExportContext exportContext, string themeName)
-    {
-        ExportContext = exportContext;
-        ThemeName = themeName;
-    }
-
-    public string FormatMarkdown(string? markdown, bool isJumboAllowed = true) =>
-        HtmlMarkdownVisitor.Format(ExportContext, markdown ?? "", isJumboAllowed);
-}

DiscordChatExporter.Core/Exporting/Writers/HtmlMessageWriter.cs

@@ -1,10 +1,12 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
 using DiscordChatExporter.Core.Discord.Data;
 using DiscordChatExporter.Core.Exporting.Writers.Html;
+using WebMarkupMin.Core;
 
 namespace DiscordChatExporter.Core.Exporting.Writers;
 
@@ -13,7 +15,8 @@ internal class HtmlMessageWriter : MessageWriter
     private readonly TextWriter _writer;
     private readonly string _themeName;
 
-    private readonly List<Message> _messageGroupBuffer = new();
+    private readonly HtmlMinifier _minifier = new();
+    private readonly List<Message> _messageGroup = new();
 
     public HtmlMessageWriter(Stream stream, ExportContext context, string themeName)
         : base(stream, context)
@@ -22,27 +25,78 @@ internal class HtmlMessageWriter : MessageWriter
         _themeName = themeName;
     }
 
-    public override async ValueTask WritePreambleAsync(CancellationToken cancellationToken = default)
+    private bool CanJoinGroup(Message message)
     {
-        var templateContext = new PreambleTemplateContext(Context, _themeName);
+        // If the group is empty, any message can join it
+        if (_messageGroup.LastOrDefault() is not { } lastMessage)
+            return true;
 
-        // We are not writing directly to output because Razor
-        // does not actually do asynchronous writes to stream.
+        // Reply messages cannot join existing groups because they need to appear first
+        if (message.Kind == MessageKind.Reply)
+            return false;
+
+        // Grouping for system notifications
+        if (message.Kind.IsSystemNotification())
+        {
+            // Can only be grouped with other system notifications
+            if (!lastMessage.Kind.IsSystemNotification())
+                return false;
+        }
+        // Grouping for normal messages
+        else
+        {
+            // Can only be grouped with other normal messages
+            if (lastMessage.Kind.IsSystemNotification())
+                return false;
+
+            // Messages must be within 7 minutes of each other
+            if ((message.Timestamp - lastMessage.Timestamp).Duration().TotalMinutes > 7)
+                return false;
+
+            // Messages must be from the same author
+            if (message.Author.Id != lastMessage.Author.Id)
+                return false;
+
+            // If the user changed their name after the last message, their new messages
+            // cannot join an existing group.
+            if (!string.Equals(message.Author.FullName, lastMessage.Author.FullName, StringComparison.Ordinal))
+                return false;
+        }
+
+        return true;
+    }
+
+    // Use <!--wmm:ignore--> to preserve blocks of code inside the templates
+    private string Minify(string html) => _minifier
+        .Minify(html, false)
+        .MinifiedContent;
+
+    public override async ValueTask WritePreambleAsync(
+        CancellationToken cancellationToken = default)
+    {
         await _writer.WriteLineAsync(
-            await PreambleTemplate.RenderAsync(templateContext, cancellationToken)
+            Minify(
+                await new PreambleTemplate
+                {
+                    ExportContext = Context,
+                    ThemeName = _themeName
+                }.RenderAsync(cancellationToken)
+            )
         );
     }
 
     private async ValueTask WriteMessageGroupAsync(
-        MessageGroup messageGroup,
+        IReadOnlyList<Message> messages,
         CancellationToken cancellationToken = default)
     {
-        var templateContext = new MessageGroupTemplateContext(Context, messageGroup);
-
-        // We are not writing directly to output because Razor
-        // does not actually do asynchronous writes to stream.
         await _writer.WriteLineAsync(
-            await MessageGroupTemplate.RenderAsync(templateContext, cancellationToken)
+            Minify(
+                await new MessageGroupTemplate
+                {
+                    ExportContext = Context,
+                    Messages = messages
+                }.RenderAsync(cancellationToken)
+            )
         );
     }
 
@@ -52,38 +106,35 @@ internal class HtmlMessageWriter : MessageWriter
     {
         await base.WriteMessageAsync(message, cancellationToken);
 
-        // If message group is empty or the given message can be grouped, buffer the given message
-        if (!_messageGroupBuffer.Any() || MessageGroup.CanJoin(_messageGroupBuffer.Last(), message))
+        // If the message can be grouped, buffer it for now
+        if (CanJoinGroup(message))
         {
-            _messageGroupBuffer.Add(message);
+            _messageGroup.Add(message);
         }
         // Otherwise, flush the group and render messages
         else
         {
-            await WriteMessageGroupAsync(MessageGroup.Join(_messageGroupBuffer), cancellationToken);
+            await WriteMessageGroupAsync(_messageGroup, cancellationToken);
 
-            _messageGroupBuffer.Clear();
-            _messageGroupBuffer.Add(message);
+            _messageGroup.Clear();
+            _messageGroup.Add(message);
         }
     }
 
     public override async ValueTask WritePostambleAsync(CancellationToken cancellationToken = default)
     {
         // Flush current message group
-        if (_messageGroupBuffer.Any())
-        {
-            await WriteMessageGroupAsync(
-                MessageGroup.Join(_messageGroupBuffer),
-                cancellationToken
-            );
-        }
+        if (_messageGroup.Any())
+            await WriteMessageGroupAsync(_messageGroup, cancellationToken);
 
-        var templateContext = new PostambleTemplateContext(Context, MessagesWritten);
-
-        // We are not writing directly to output because Razor
-        // does not actually do asynchronous writes to stream.
         await _writer.WriteLineAsync(
-            await PostambleTemplate.RenderAsync(templateContext, cancellationToken)
+            Minify(
+                await new PostambleTemplate
+                {
+                    ExportContext = Context,
+                    MessagesWritten = MessagesWritten
+                }.RenderAsync(cancellationToken)
+            )
         );
     }
 

DiscordChatExporter.Core/Exporting/Writers/JsonMessageWriter.cs

@@ -20,6 +20,7 @@ internal class JsonMessageWriter : MessageWriter
     {
         _writer = new Utf8JsonWriter(stream, new JsonWriterOptions
         {
+            // https://github.com/Tyrrrz/DiscordChatExporter/issues/450
             Encoder = JavaScriptEncoder.UnsafeRelaxedJsonEscaping,
             Indented = true,
             // Validation errors may mask actual failures
@@ -28,8 +29,10 @@ internal class JsonMessageWriter : MessageWriter
         });
     }
 
-    private string FormatMarkdown(string? markdown) =>
-        PlainTextMarkdownVisitor.Format(Context, markdown ?? "");
+    private ValueTask<string> FormatMarkdownAsync(
+        string markdown,
+        CancellationToken cancellationToken = default) =>
+        PlainTextMarkdownVisitor.FormatAsync(Context, markdown, cancellationToken);
 
     private async ValueTask WriteAttachmentAsync(
         Attachment attachment,
@@ -38,7 +41,7 @@ internal class JsonMessageWriter : MessageWriter
         _writer.WriteStartObject();
 
         _writer.WriteString("id", attachment.Id.ToString());
-        _writer.WriteString("url", await Context.ResolveMediaUrlAsync(attachment.Url, cancellationToken));
+        _writer.WriteString("url", await Context.ResolveAssetUrlAsync(attachment.Url, cancellationToken));
         _writer.WriteString("fileName", attachment.FileName);
         _writer.WriteNumber("fileSizeBytes", attachment.FileSize.TotalBytes);
 
@@ -50,29 +53,18 @@ internal class JsonMessageWriter : MessageWriter
         EmbedAuthor embedAuthor,
         CancellationToken cancellationToken = default)
     {
-        _writer.WriteStartObject("author");
+        _writer.WriteStartObject();
 
         _writer.WriteString("name", embedAuthor.Name);
         _writer.WriteString("url", embedAuthor.Url);
 
         if (!string.IsNullOrWhiteSpace(embedAuthor.IconUrl))
-            _writer.WriteString("iconUrl", await Context.ResolveMediaUrlAsync(embedAuthor.IconProxyUrl ?? embedAuthor.IconUrl, cancellationToken));
-
-        _writer.WriteEndObject();
-        await _writer.FlushAsync(cancellationToken);
-    }
-
-    private async ValueTask WriteEmbedThumbnailAsync(
-        EmbedImage embedThumbnail,
-        CancellationToken cancellationToken = default)
-    {
-        _writer.WriteStartObject("thumbnail");
-
-        if (!string.IsNullOrWhiteSpace(embedThumbnail.Url))
-            _writer.WriteString("url", await Context.ResolveMediaUrlAsync(embedThumbnail.ProxyUrl ?? embedThumbnail.Url, cancellationToken));
-
-        _writer.WriteNumber("width", embedThumbnail.Width);
-        _writer.WriteNumber("height", embedThumbnail.Height);
+        {
+            _writer.WriteString(
+                "iconUrl",
+                await Context.ResolveAssetUrlAsync(embedAuthor.IconProxyUrl ?? embedAuthor.IconUrl, cancellationToken)
+            );
+        }
 
         _writer.WriteEndObject();
         await _writer.FlushAsync(cancellationToken);
@@ -82,10 +74,15 @@ internal class JsonMessageWriter : MessageWriter
         EmbedImage embedImage,
         CancellationToken cancellationToken = default)
     {
-        _writer.WriteStartObject("image");
+        _writer.WriteStartObject();
 
         if (!string.IsNullOrWhiteSpace(embedImage.Url))
-            _writer.WriteString("url", await Context.ResolveMediaUrlAsync(embedImage.ProxyUrl ?? embedImage.Url, cancellationToken));
+        {
+            _writer.WriteString(
+                "url",
+                await Context.ResolveAssetUrlAsync(embedImage.ProxyUrl ?? embedImage.Url, cancellationToken)
+            );
+        }
 
         _writer.WriteNumber("width", embedImage.Width);
         _writer.WriteNumber("height", embedImage.Height);
@@ -98,12 +95,17 @@ internal class JsonMessageWriter : MessageWriter
         EmbedFooter embedFooter,
         CancellationToken cancellationToken = default)
     {
-        _writer.WriteStartObject("footer");
+        _writer.WriteStartObject();
 
         _writer.WriteString("text", embedFooter.Text);
 
         if (!string.IsNullOrWhiteSpace(embedFooter.IconUrl))
-            _writer.WriteString("iconUrl", await Context.ResolveMediaUrlAsync(embedFooter.IconProxyUrl ?? embedFooter.IconUrl, cancellationToken));
+        {
+            _writer.WriteString(
+                "iconUrl",
+                await Context.ResolveAssetUrlAsync(embedFooter.IconProxyUrl ?? embedFooter.IconUrl, cancellationToken)
+            );
+        }
 
         _writer.WriteEndObject();
         await _writer.FlushAsync(cancellationToken);
@@ -115,8 +117,8 @@ internal class JsonMessageWriter : MessageWriter
     {
         _writer.WriteStartObject();
 
-        _writer.WriteString("name", FormatMarkdown(embedField.Name));
-        _writer.WriteString("value", FormatMarkdown(embedField.Value));
+        _writer.WriteString("name", await FormatMarkdownAsync(embedField.Name, cancellationToken));
+        _writer.WriteString("value", await FormatMarkdownAsync(embedField.Value, cancellationToken));
         _writer.WriteBoolean("isInline", embedField.IsInline);
 
         _writer.WriteEndObject();
@@ -129,25 +131,46 @@ internal class JsonMessageWriter : MessageWriter
     {
         _writer.WriteStartObject();
 
-        _writer.WriteString("title", FormatMarkdown(embed.Title));
+        _writer.WriteString("title", await FormatMarkdownAsync(embed.Title ?? "", cancellationToken));
         _writer.WriteString("url", embed.Url);
         _writer.WriteString("timestamp", embed.Timestamp);
-        _writer.WriteString("description", FormatMarkdown(embed.Description));
+        _writer.WriteString("description", await FormatMarkdownAsync(embed.Description ?? "", cancellationToken));
 
         if (embed.Color is not null)
             _writer.WriteString("color", embed.Color.Value.ToHex());
 
         if (embed.Author is not null)
+        {
+            _writer.WritePropertyName("author");
             await WriteEmbedAuthorAsync(embed.Author, cancellationToken);
+        }
 
         if (embed.Thumbnail is not null)
-            await WriteEmbedThumbnailAsync(embed.Thumbnail, cancellationToken);
+        {
+            _writer.WritePropertyName("thumbnail");
+            await WriteEmbedImageAsync(embed.Thumbnail, cancellationToken);
+        }
 
-        if (embed.Image is not null)
-            await WriteEmbedImageAsync(embed.Image, cancellationToken);
+        // Legacy: backwards-compatibility for old embeds with a single image
+        if (embed.Images.Count > 0)
+        {
+            _writer.WritePropertyName("image");
+            await WriteEmbedImageAsync(embed.Images[0], cancellationToken);
+        }
 
         if (embed.Footer is not null)
+        {
+            _writer.WritePropertyName("footer");
             await WriteEmbedFooterAsync(embed.Footer, cancellationToken);
+        }
+
+        // Images
+        _writer.WriteStartArray("images");
+
+        foreach (var image in embed.Images)
+            await WriteEmbedImageAsync(image, cancellationToken);
+
+        _writer.WriteEndArray();
 
         // Fields
         _writer.WriteStartArray("fields");
@@ -170,7 +193,7 @@ internal class JsonMessageWriter : MessageWriter
         _writer.WriteString("id", sticker.Id.ToString());
         _writer.WriteString("name", sticker.Name);
         _writer.WriteString("format", sticker.Format.ToString());
-        _writer.WriteString("sourceUrl", await Context.ResolveMediaUrlAsync(sticker.SourceUrl, cancellationToken));
+        _writer.WriteString("sourceUrl", await Context.ResolveAssetUrlAsync(sticker.SourceUrl, cancellationToken));
 
         _writer.WriteEndObject();
         await _writer.FlushAsync(cancellationToken);
@@ -187,7 +210,7 @@ internal class JsonMessageWriter : MessageWriter
         _writer.WriteString("id", reaction.Emoji.Id.ToString());
         _writer.WriteString("name", reaction.Emoji.Name);
         _writer.WriteBoolean("isAnimated", reaction.Emoji.IsAnimated);
-        _writer.WriteString("imageUrl", await Context.ResolveMediaUrlAsync(reaction.Emoji.ImageUrl, cancellationToken));
+        _writer.WriteString("imageUrl", await Context.ResolveAssetUrlAsync(reaction.Emoji.ImageUrl, cancellationToken));
         _writer.WriteEndObject();
 
         _writer.WriteNumber("count", reaction.Count);
@@ -221,7 +244,7 @@ internal class JsonMessageWriter : MessageWriter
         _writer.WriteStartObject("guild");
         _writer.WriteString("id", Context.Request.Guild.Id.ToString());
         _writer.WriteString("name", Context.Request.Guild.Name);
-        _writer.WriteString("iconUrl", await Context.ResolveMediaUrlAsync(Context.Request.Guild.IconUrl, cancellationToken));
+        _writer.WriteString("iconUrl", await Context.ResolveAssetUrlAsync(Context.Request.Guild.IconUrl, cancellationToken));
         _writer.WriteEndObject();
 
         // Channel
@@ -262,7 +285,7 @@ internal class JsonMessageWriter : MessageWriter
         _writer.WriteBoolean("isPinned", message.IsPinned);
 
         // Content
-        _writer.WriteString("content", FormatMarkdown(message.Content));
+        _writer.WriteString("content", await FormatMarkdownAsync(message.Content, cancellationToken));
 
         // Author
         _writer.WriteStartObject("author");
@@ -272,7 +295,7 @@ internal class JsonMessageWriter : MessageWriter
         _writer.WriteString("nickname", Context.TryGetMember(message.Author.Id)?.Nick ?? message.Author.Name);
         _writer.WriteString("color", Context.TryGetUserColor(message.Author.Id)?.ToHex());
         _writer.WriteBoolean("isBot", message.Author.IsBot);
-        _writer.WriteString("avatarUrl", await Context.ResolveMediaUrlAsync(message.Author.AvatarUrl, cancellationToken));
+        _writer.WriteString("avatarUrl", await Context.ResolveAssetUrlAsync(message.Author.AvatarUrl, cancellationToken));
         _writer.WriteEndObject();
 
         // Attachments

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

@@ -3,6 +3,8 @@ using System.Linq;
 using System.Net;
 using System.Text;
 using System.Text.RegularExpressions;
+using System.Threading;
+using System.Threading.Tasks;
 using DiscordChatExporter.Core.Discord.Data;
 using DiscordChatExporter.Core.Markdown;
 using DiscordChatExporter.Core.Markdown.Parsing;
@@ -23,59 +25,91 @@ internal partial class HtmlMarkdownVisitor : MarkdownVisitor
         _isJumbo = isJumbo;
     }
 
-    protected override MarkdownNode VisitText(TextNode text)
+    protected override async ValueTask<MarkdownNode> VisitTextAsync(
+        TextNode text,
+        CancellationToken cancellationToken = default)
     {
         _buffer.Append(HtmlEncode(text.Text));
-        return base.VisitText(text);
+        return await base.VisitTextAsync(text, cancellationToken);
     }
 
-    protected override MarkdownNode VisitFormatting(FormattingNode formatting)
+    protected override async ValueTask<MarkdownNode> VisitFormattingAsync(
+        FormattingNode formatting,
+        CancellationToken cancellationToken = default)
     {
-        var (tagOpen, tagClose) = formatting.Kind switch
+        var (openingTag, closingTag) = formatting.Kind switch
         {
-            FormattingKind.Bold => ("<strong>", "</strong>"),
-            FormattingKind.Italic => ("<em>", "</em>"),
-            FormattingKind.Underline => ("<u>", "</u>"),
-            FormattingKind.Strikethrough => ("<s>", "</s>"),
+            FormattingKind.Bold => (
+                "<strong>",
+                "</strong>"
+            ),
+
+            FormattingKind.Italic => (
+                "<em>",
+                "</em>"
+            ),
+
+            FormattingKind.Underline => (
+                "<u>",
+                "</u>"
+            ),
+
+            FormattingKind.Strikethrough => (
+                "<s>",
+                "</s>"
+            ),
+
             FormattingKind.Spoiler => (
-                "<span class=\"spoiler-text spoiler-text--hidden\" onclick=\"showSpoiler(event, this)\">", "</span>"),
+                "<span class=\"chatlog__markdown-spoiler chatlog__markdown-spoiler--hidden\" onclick=\"showSpoiler(event, this)\">",
+                "</span>"
+            ),
+
             FormattingKind.Quote => (
-                "<div class=\"quote\"><div class=\"quote-border\"></div><div class=\"quote-content\">", "</div></div>"),
-            _ => throw new ArgumentOutOfRangeException(nameof(formatting.Kind))
+                "<div class=\"chatlog__markdown-quote\"><div class=\"chatlog__markdown-quote-border\"></div><div class=\"chatlog__markdown-quote-content\">",
+                "</div></div>"
+            ),
+
+            _ => throw new InvalidOperationException($"Unknown formatting kind '{formatting.Kind}'.")
         };
 
-        _buffer.Append(tagOpen);
-        var result = base.VisitFormatting(formatting);
-        _buffer.Append(tagClose);
+        _buffer.Append(openingTag);
+        var result = await base.VisitFormattingAsync(formatting, cancellationToken);
+        _buffer.Append(closingTag);
 
         return result;
     }
 
-    protected override MarkdownNode VisitInlineCodeBlock(InlineCodeBlockNode inlineCodeBlock)
+    protected override async ValueTask<MarkdownNode> VisitInlineCodeBlockAsync(
+        InlineCodeBlockNode inlineCodeBlock,
+        CancellationToken cancellationToken = default)
     {
         _buffer
-            .Append("<span class=\"pre pre--inline\">")
+            .Append("<code class=\"chatlog__markdown-pre chatlog__markdown-pre--inline\">")
             .Append(HtmlEncode(inlineCodeBlock.Code))
-            .Append("</span>");
+            .Append("</code>");
 
-        return base.VisitInlineCodeBlock(inlineCodeBlock);
+        return await base.VisitInlineCodeBlockAsync(inlineCodeBlock, cancellationToken);
     }
 
-    protected override MarkdownNode VisitMultiLineCodeBlock(MultiLineCodeBlockNode multiLineCodeBlock)
+    protected override async ValueTask<MarkdownNode> VisitMultiLineCodeBlockAsync(
+        MultiLineCodeBlockNode multiLineCodeBlock,
+        CancellationToken cancellationToken = default)
     {
         var highlightCssClass = !string.IsNullOrWhiteSpace(multiLineCodeBlock.Language)
             ? $"language-{multiLineCodeBlock.Language}"
             : "nohighlight";
 
         _buffer
-            .Append($"<div class=\"pre pre--multiline {highlightCssClass}\">")
+            .Append($"<code class=\"chatlog__markdown-pre chatlog__markdown-pre--multiline {highlightCssClass}\">")
             .Append(HtmlEncode(multiLineCodeBlock.Code))
-            .Append("</div>");
+            .Append("</code>");
 
-        return base.VisitMultiLineCodeBlock(multiLineCodeBlock);
+        return await base.VisitMultiLineCodeBlockAsync(multiLineCodeBlock, cancellationToken);
     }
 
-    protected override MarkdownNode VisitLink(LinkNode link)
+    protected override async ValueTask<MarkdownNode> VisitLinkAsync(
+        LinkNode link,
+        CancellationToken cancellationToken = default)
     {
         // Try to extract message ID if the link refers to a Discord message
         var linkedMessageId = Regex.Match(
@@ -89,36 +123,47 @@ internal partial class HtmlMarkdownVisitor : MarkdownVisitor
                 : $"<a href=\"{HtmlEncode(link.Url)}\">"
         );
 
-        var result = base.VisitLink(link);
+        var result = await base.VisitLinkAsync(link, cancellationToken);
         _buffer.Append("</a>");
 
         return result;
     }
 
-    protected override MarkdownNode VisitEmoji(EmojiNode emoji)
+    protected override async ValueTask<MarkdownNode> VisitEmojiAsync(
+        EmojiNode emoji,
+        CancellationToken cancellationToken = default)
     {
         var emojiImageUrl = Emoji.GetImageUrl(emoji.Id, emoji.Name, emoji.IsAnimated);
-        var jumboClass = _isJumbo ? "emoji--large" : "";
+        var jumboClass = _isJumbo ? "chatlog__emoji--large" : "";
 
-        _buffer
-            .Append($"<img loading=\"lazy\" class=\"emoji {jumboClass}\" alt=\"{emoji.Name}\" title=\"{emoji.Code}\" src=\"{emojiImageUrl}\">");
+        _buffer.Append(
+            $"<img " +
+            $"loading=\"lazy\" " +
+            $"class=\"chatlog__emoji {jumboClass}\" " +
+            $"alt=\"{emoji.Name}\" " +
+            $"title=\"{emoji.Code}\" " +
+            $"src=\"{await _context.ResolveAssetUrlAsync(emojiImageUrl, cancellationToken)}\"" +
+            $">"
+        );
 
-        return base.VisitEmoji(emoji);
+        return await base.VisitEmojiAsync(emoji, cancellationToken);
     }
 
-    protected override MarkdownNode VisitMention(MentionNode mention)
+    protected override async ValueTask<MarkdownNode> VisitMentionAsync(
+        MentionNode mention,
+        CancellationToken cancellationToken = default)
     {
         if (mention.Kind == MentionKind.Everyone)
         {
             _buffer
-                .Append("<span class=\"mention\">")
+                .Append("<span class=\"chatlog__markdown-mention\">")
                 .Append("@everyone")
                 .Append("</span>");
         }
         else if (mention.Kind == MentionKind.Here)
         {
             _buffer
-                .Append("<span class=\"mention\">")
+                .Append("<span class=\"chatlog__markdown-mention\">")
                 .Append("@here")
                 .Append("</span>");
         }
@@ -129,18 +174,18 @@ internal partial class HtmlMarkdownVisitor : MarkdownVisitor
             var nick = member?.Nick ?? "Unknown";
 
             _buffer
-                .Append($"<span class=\"mention\" title=\"{HtmlEncode(fullName)}\">")
+                .Append($"<span class=\"chatlog__markdown-mention\" title=\"{HtmlEncode(fullName)}\">")
                 .Append('@').Append(HtmlEncode(nick))
                 .Append("</span>");
         }
         else if (mention.Kind == MentionKind.Channel)
         {
             var channel = mention.TargetId?.Pipe(_context.TryGetChannel);
-            var symbol = channel?.IsVoiceChannel == true ? "🔊" : "#";
+            var symbol = channel?.SupportsVoice == true ? "🔊" : "#";
             var name = channel?.Name ?? "deleted-channel";
 
             _buffer
-                .Append("<span class=\"mention\">")
+                .Append("<span class=\"chatlog__markdown-mention\">")
                 .Append(symbol).Append(HtmlEncode(name))
                 .Append("</span>");
         }
@@ -151,19 +196,22 @@ internal partial class HtmlMarkdownVisitor : MarkdownVisitor
             var color = role?.Color;
 
             var style = color is not null
-                ? $"color: rgb({color?.R}, {color?.G}, {color?.B}); background-color: rgba({color?.R}, {color?.G}, {color?.B}, 0.1);"
+                ? $"color: rgb({color.Value.R}, {color.Value.G}, {color.Value.B}); " +
+                  $"background-color: rgba({color.Value.R}, {color.Value.G}, {color.Value.B}, 0.1);"
                 : "";
 
             _buffer
-                .Append($"<span class=\"mention\" style=\"{style}\">")
+                .Append($"<span class=\"chatlog__markdown-mention\" style=\"{style}\">")
                 .Append('@').Append(HtmlEncode(name))
                 .Append("</span>");
         }
 
-        return base.VisitMention(mention);
+        return await base.VisitMentionAsync(mention, cancellationToken);
     }
 
-    protected override MarkdownNode VisitUnixTimestamp(UnixTimestampNode timestamp)
+    protected override async ValueTask<MarkdownNode> VisitUnixTimestampAsync(
+        UnixTimestampNode timestamp,
+        CancellationToken cancellationToken = default)
     {
         var dateString = timestamp.Date is not null
             ? _context.FormatDate(timestamp.Date.Value)
@@ -175,11 +223,11 @@ internal partial class HtmlMarkdownVisitor : MarkdownVisitor
             : "Invalid date";
 
         _buffer
-            .Append($"<span class=\"timestamp\" title=\"{HtmlEncode(longDateString)}\">")
+            .Append($"<span class=\"chatlog__markdown-timestamp\" title=\"{HtmlEncode(longDateString)}\">")
             .Append(HtmlEncode(dateString))
             .Append("</span>");
 
-        return base.VisitUnixTimestamp(timestamp);
+        return await base.VisitUnixTimestampAsync(timestamp, cancellationToken);
     }
 }
 
@@ -187,7 +235,11 @@ internal partial class HtmlMarkdownVisitor
 {
     private static string HtmlEncode(string text) => WebUtility.HtmlEncode(text);
 
-    public static string Format(ExportContext context, string markdown, bool isJumboAllowed = true)
+    public static async ValueTask<string> FormatAsync(
+        ExportContext context,
+        string markdown,
+        bool isJumboAllowed = true,
+        CancellationToken cancellationToken = default)
     {
         var nodes = MarkdownParser.Parse(markdown);
 
@@ -197,7 +249,8 @@ internal partial class HtmlMarkdownVisitor
 
         var buffer = new StringBuilder();
 
-        new HtmlMarkdownVisitor(context, buffer, isJumbo).Visit(nodes);
+        await new HtmlMarkdownVisitor(context, buffer, isJumbo)
+            .VisitAsync(nodes, cancellationToken);
 
         return buffer.ToString();
     }

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

@@ -1,4 +1,6 @@
 using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
 using DiscordChatExporter.Core.Markdown;
 using DiscordChatExporter.Core.Markdown.Parsing;
 using DiscordChatExporter.Core.Utils.Extensions;
@@ -16,13 +18,17 @@ internal partial class PlainTextMarkdownVisitor : MarkdownVisitor
         _buffer = buffer;
     }
 
-    protected override MarkdownNode VisitText(TextNode text)
+    protected override async ValueTask<MarkdownNode> VisitTextAsync(
+        TextNode text,
+        CancellationToken cancellationToken = default)
     {
         _buffer.Append(text.Text);
-        return base.VisitText(text);
+        return await base.VisitTextAsync(text, cancellationToken);
     }
 
-    protected override MarkdownNode VisitEmoji(EmojiNode emoji)
+    protected override async ValueTask<MarkdownNode> VisitEmojiAsync(
+        EmojiNode emoji,
+        CancellationToken cancellationToken = default)
     {
         _buffer.Append(
             emoji.IsCustomEmoji
@@ -30,10 +36,12 @@ internal partial class PlainTextMarkdownVisitor : MarkdownVisitor
                 : emoji.Name
         );
 
-        return base.VisitEmoji(emoji);
+        return await base.VisitEmojiAsync(emoji, cancellationToken);
     }
 
-    protected override MarkdownNode VisitMention(MentionNode mention)
+    protected override async ValueTask<MarkdownNode> VisitMentionAsync(
+        MentionNode mention,
+        CancellationToken cancellationToken = default)
     {
         if (mention.Kind == MentionKind.Everyone)
         {
@@ -52,13 +60,13 @@ internal partial class PlainTextMarkdownVisitor : MarkdownVisitor
         }
         else if (mention.Kind == MentionKind.Channel)
         {
-            var channel =mention.TargetId?.Pipe(_context.TryGetChannel);
+            var channel = mention.TargetId?.Pipe(_context.TryGetChannel);
             var name = channel?.Name ?? "deleted-channel";
 
             _buffer.Append($"#{name}");
 
             // Voice channel marker
-            if (channel?.IsVoiceChannel == true)
+            if (channel?.SupportsVoice == true)
                 _buffer.Append(" [voice]");
         }
         else if (mention.Kind == MentionKind.Role)
@@ -69,10 +77,12 @@ internal partial class PlainTextMarkdownVisitor : MarkdownVisitor
             _buffer.Append($"@{name}");
         }
 
-        return base.VisitMention(mention);
+        return await base.VisitMentionAsync(mention, cancellationToken);
     }
 
-    protected override MarkdownNode VisitUnixTimestamp(UnixTimestampNode timestamp)
+    protected override async ValueTask<MarkdownNode> VisitUnixTimestampAsync(
+        UnixTimestampNode timestamp,
+        CancellationToken cancellationToken = default)
     {
         _buffer.Append(
             timestamp.Date is not null
@@ -80,18 +90,22 @@ internal partial class PlainTextMarkdownVisitor : MarkdownVisitor
                 : "Invalid date"
         );
 
-        return base.VisitUnixTimestamp(timestamp);
+        return await base.VisitUnixTimestampAsync(timestamp, cancellationToken);
     }
 }
 
 internal partial class PlainTextMarkdownVisitor
 {
-    public static string Format(ExportContext context, string markdown)
+    public static async ValueTask<string> FormatAsync(
+        ExportContext context,
+        string markdown,
+        CancellationToken cancellationToken = default)
     {
         var nodes = MarkdownParser.ParseMinimal(markdown);
         var buffer = new StringBuilder();
 
-        new PlainTextMarkdownVisitor(context, buffer).Visit(nodes);
+        await new PlainTextMarkdownVisitor(context, buffer)
+            .VisitAsync(nodes, cancellationToken);
 
         return buffer.ToString();
     }

DiscordChatExporter.Core/Exporting/Writers/PlainTextMessageWriter.cs

@@ -19,8 +19,10 @@ internal class PlainTextMessageWriter : MessageWriter
         _writer = new StreamWriter(stream);
     }
 
-    private string FormatMarkdown(string? markdown) =>
-        PlainTextMarkdownVisitor.Format(Context, markdown ?? "");
+    private ValueTask<string> FormatMarkdownAsync(
+        string markdown,
+        CancellationToken cancellationToken = default) =>
+        PlainTextMarkdownVisitor.FormatAsync(Context, markdown, cancellationToken);
 
     private async ValueTask WriteMessageHeaderAsync(Message message)
     {
@@ -48,7 +50,9 @@ internal class PlainTextMessageWriter : MessageWriter
         {
             cancellationToken.ThrowIfCancellationRequested();
 
-            await _writer.WriteLineAsync(await Context.ResolveMediaUrlAsync(attachment.Url, cancellationToken));
+            await _writer.WriteLineAsync(
+                await Context.ResolveAssetUrlAsync(attachment.Url, cancellationToken)
+            );
         }
 
         await _writer.WriteLineAsync();
@@ -65,34 +69,73 @@ internal class PlainTextMessageWriter : MessageWriter
             await _writer.WriteLineAsync("{Embed}");
 
             if (!string.IsNullOrWhiteSpace(embed.Author?.Name))
+            {
                 await _writer.WriteLineAsync(embed.Author.Name);
+            }
 
             if (!string.IsNullOrWhiteSpace(embed.Url))
+            {
                 await _writer.WriteLineAsync(embed.Url);
+            }
 
             if (!string.IsNullOrWhiteSpace(embed.Title))
-                await _writer.WriteLineAsync(FormatMarkdown(embed.Title));
+            {
+                await _writer.WriteLineAsync(
+                    await FormatMarkdownAsync(embed.Title, cancellationToken)
+                );
+            }
 
             if (!string.IsNullOrWhiteSpace(embed.Description))
-                await _writer.WriteLineAsync(FormatMarkdown(embed.Description));
+            {
+                await _writer.WriteLineAsync(
+                    await FormatMarkdownAsync(embed.Description, cancellationToken)
+                );
+            }
 
             foreach (var field in embed.Fields)
             {
                 if (!string.IsNullOrWhiteSpace(field.Name))
-                    await _writer.WriteLineAsync(FormatMarkdown(field.Name));
+                {
+                    await _writer.WriteLineAsync(
+                        await FormatMarkdownAsync(field.Name, cancellationToken)
+                    );
+                }
 
                 if (!string.IsNullOrWhiteSpace(field.Value))
-                    await _writer.WriteLineAsync(FormatMarkdown(field.Value));
+                {
+                    await _writer.WriteLineAsync(
+                        await FormatMarkdownAsync(field.Value, cancellationToken)
+                    );
+                }
             }
 
             if (!string.IsNullOrWhiteSpace(embed.Thumbnail?.Url))
-                await _writer.WriteLineAsync(await Context.ResolveMediaUrlAsync(embed.Thumbnail.ProxyUrl ?? embed.Thumbnail.Url, cancellationToken));
+            {
+                await _writer.WriteLineAsync(
+                    await Context.ResolveAssetUrlAsync(
+                        embed.Thumbnail.ProxyUrl ?? embed.Thumbnail.Url,
+                        cancellationToken
+                    )
+                );
+            }
 
-            if (!string.IsNullOrWhiteSpace(embed.Image?.Url))
-                await _writer.WriteLineAsync(await Context.ResolveMediaUrlAsync(embed.Image.ProxyUrl ?? embed.Image.Url, cancellationToken));
+            foreach (var image in embed.Images)
+            {
+                if (!string.IsNullOrWhiteSpace(image.Url))
+                {
+                    await _writer.WriteLineAsync(
+                        await Context.ResolveAssetUrlAsync(
+                            image.ProxyUrl ?? image.Url,
+                            cancellationToken
+                        )
+                    );
+                }
+            }
 
             if (!string.IsNullOrWhiteSpace(embed.Footer?.Text))
+            {
                 await _writer.WriteLineAsync(embed.Footer.Text);
+            }
 
             await _writer.WriteLineAsync();
         }
@@ -111,7 +154,9 @@ internal class PlainTextMessageWriter : MessageWriter
         {
             cancellationToken.ThrowIfCancellationRequested();
 
-            await _writer.WriteLineAsync(await Context.ResolveMediaUrlAsync(sticker.SourceUrl, cancellationToken));
+            await _writer.WriteLineAsync(
+                await Context.ResolveAssetUrlAsync(sticker.SourceUrl, cancellationToken)
+            );
         }
 
         await _writer.WriteLineAsync();
@@ -133,7 +178,9 @@ internal class PlainTextMessageWriter : MessageWriter
             await _writer.WriteAsync(reaction.Emoji.Name);
 
             if (reaction.Count > 1)
+            {
                 await _writer.WriteAsync($" ({reaction.Count})");
+            }
 
             await _writer.WriteAsync(' ');
         }
@@ -148,13 +195,19 @@ internal class PlainTextMessageWriter : MessageWriter
         await _writer.WriteLineAsync($"Channel: {Context.Request.Channel.Category.Name} / {Context.Request.Channel.Name}");
 
         if (!string.IsNullOrWhiteSpace(Context.Request.Channel.Topic))
+        {
             await _writer.WriteLineAsync($"Topic: {Context.Request.Channel.Topic}");
+        }
 
         if (Context.Request.After is not null)
+        {
             await _writer.WriteLineAsync($"After: {Context.FormatDate(Context.Request.After.Value.ToDate())}");
+        }
 
         if (Context.Request.Before is not null)
+        {
             await _writer.WriteLineAsync($"Before: {Context.FormatDate(Context.Request.Before.Value.ToDate())}");
+        }
 
         await _writer.WriteLineAsync(new string('=', 62));
         await _writer.WriteLineAsync();
@@ -171,7 +224,11 @@ internal class PlainTextMessageWriter : MessageWriter
 
         // Content
         if (!string.IsNullOrWhiteSpace(message.Content))
-            await _writer.WriteLineAsync(FormatMarkdown(message.Content));
+        {
+            await _writer.WriteLineAsync(
+                await FormatMarkdownAsync(message.Content, cancellationToken)
+            );
+        }
 
         await _writer.WriteLineAsync();
 

DiscordChatExporter.Core/Markdown/EmojiNode.cs

@@ -6,13 +6,13 @@ namespace DiscordChatExporter.Core.Markdown;
 internal record EmojiNode(
     // Only present on custom emoji
     Snowflake? Id,
-    // Name of custom emoji (e.g. LUL) or actual representation of standard emoji (e.g. 🙂)
+    // Name of a custom emoji (e.g. LUL) or actual representation of a standard emoji (e.g. 🙂)
     string Name,
     bool IsAnimated) : MarkdownNode
 {
     public bool IsCustomEmoji => Id is not null;
 
-    // Name of custom emoji (e.g. LUL) or name of standard emoji (e.g. slight_smile)
+    // Name of a custom emoji (e.g. LUL) or name of a standard emoji (e.g. slight_smile)
     public string Code => IsCustomEmoji
         ? Name
         : EmojiIndex.TryGetCode(Name) ?? Name;

DiscordChatExporter.Core/Markdown/Parsing/MarkdownParser.cs

@@ -77,8 +77,9 @@ internal static partial class MarkdownParser
 
     // Capture any character until the end of the line
     // Opening 'greater than' character must be followed by whitespace
+    // Text content is optional
     private static readonly IMatcher<MarkdownNode> SingleLineQuoteNodeMatcher = new RegexMatcher<MarkdownNode>(
-        new Regex("^>\\s(.+\n?)", DefaultRegexOptions),
+        new Regex("^>\\s(.*\n?)", DefaultRegexOptions),
         (s, m) => new FormattingNode(FormattingKind.Quote, Parse(s.Relocate(m.Groups[1])))
     );
 
@@ -86,7 +87,7 @@ internal static partial class MarkdownParser
     // This one is tricky as it ends up producing multiple separate captures which need to be joined
     private static readonly IMatcher<MarkdownNode> RepeatedSingleLineQuoteNodeMatcher =
         new RegexMatcher<MarkdownNode>(
-            new Regex("(?:^>\\s(.+\n?)){2,}", DefaultRegexOptions),
+            new Regex("(?:^>\\s(.*\n?)){2,}", DefaultRegexOptions),
             (_, m) =>
             {
                 var content = string.Concat(m.Groups[1].Captures.Select(c => c.Value));

DiscordChatExporter.Core/Markdown/Parsing/MarkdownVisitor.cs

@@ -1,56 +1,94 @@
 using System;
 using System.Collections.Generic;
+using System.Threading;
+using System.Threading.Tasks;
 
 namespace DiscordChatExporter.Core.Markdown.Parsing;
 
 internal abstract class MarkdownVisitor
 {
-    protected virtual MarkdownNode VisitText(TextNode text) =>
-        text;
+    protected virtual ValueTask<MarkdownNode> VisitTextAsync(
+        TextNode text,
+        CancellationToken cancellationToken = default) =>
+        new(text);
 
-    protected virtual MarkdownNode VisitFormatting(FormattingNode formatting)
+    protected virtual async ValueTask<MarkdownNode> VisitFormattingAsync(
+        FormattingNode formatting,
+        CancellationToken cancellationToken = default)
     {
-        Visit(formatting.Children);
+        await VisitAsync(formatting.Children, cancellationToken);
         return formatting;
     }
 
-    protected virtual MarkdownNode VisitInlineCodeBlock(InlineCodeBlockNode inlineCodeBlock) =>
-        inlineCodeBlock;
+    protected virtual ValueTask<MarkdownNode> VisitInlineCodeBlockAsync(
+        InlineCodeBlockNode inlineCodeBlock,
+        CancellationToken cancellationToken = default) =>
+        new(inlineCodeBlock);
 
-    protected virtual MarkdownNode VisitMultiLineCodeBlock(MultiLineCodeBlockNode multiLineCodeBlock) =>
-        multiLineCodeBlock;
+    protected virtual ValueTask<MarkdownNode> VisitMultiLineCodeBlockAsync(
+        MultiLineCodeBlockNode multiLineCodeBlock,
+        CancellationToken cancellationToken = default) =>
+        new(multiLineCodeBlock);
 
-    protected virtual MarkdownNode VisitLink(LinkNode link)
+    protected virtual async ValueTask<MarkdownNode> VisitLinkAsync(
+        LinkNode link,
+        CancellationToken cancellationToken = default)
     {
-        Visit(link.Children);
+        await VisitAsync(link.Children, cancellationToken);
         return link;
     }
 
-    protected virtual MarkdownNode VisitEmoji(EmojiNode emoji) =>
-        emoji;
+    protected virtual ValueTask<MarkdownNode> VisitEmojiAsync(
+        EmojiNode emoji,
+        CancellationToken cancellationToken = default) =>
+        new(emoji);
 
-    protected virtual MarkdownNode VisitMention(MentionNode mention) =>
-        mention;
+    protected virtual ValueTask<MarkdownNode> VisitMentionAsync(
+        MentionNode mention,
+        CancellationToken cancellationToken = default) =>
+        new(mention);
 
-    protected virtual MarkdownNode VisitUnixTimestamp(UnixTimestampNode timestamp) =>
-        timestamp;
+    protected virtual ValueTask<MarkdownNode> VisitUnixTimestampAsync(
+        UnixTimestampNode timestamp,
+        CancellationToken cancellationToken = default) =>
+        new(timestamp);
 
-    public MarkdownNode Visit(MarkdownNode node) => node switch
-    {
-        TextNode text => VisitText(text),
-        FormattingNode formatting => VisitFormatting(formatting),
-        InlineCodeBlockNode inlineCodeBlock => VisitInlineCodeBlock(inlineCodeBlock),
-        MultiLineCodeBlockNode multiLineCodeBlock => VisitMultiLineCodeBlock(multiLineCodeBlock),
-        LinkNode link => VisitLink(link),
-        EmojiNode emoji => VisitEmoji(emoji),
-        MentionNode mention => VisitMention(mention),
-        UnixTimestampNode timestamp => VisitUnixTimestamp(timestamp),
-        _ => throw new ArgumentOutOfRangeException(nameof(node))
-    };
+    public async ValueTask<MarkdownNode> VisitAsync(
+        MarkdownNode node,
+        CancellationToken cancellationToken = default) => node switch
+        {
+            TextNode text =>
+                await VisitTextAsync(text, cancellationToken),
 
-    public void Visit(IEnumerable<MarkdownNode> nodes)
+            FormattingNode formatting =>
+                await VisitFormattingAsync(formatting, cancellationToken),
+
+            InlineCodeBlockNode inlineCodeBlock =>
+                await VisitInlineCodeBlockAsync(inlineCodeBlock, cancellationToken),
+
+            MultiLineCodeBlockNode multiLineCodeBlock =>
+                await VisitMultiLineCodeBlockAsync(multiLineCodeBlock, cancellationToken),
+
+            LinkNode link =>
+                await VisitLinkAsync(link, cancellationToken),
+
+            EmojiNode emoji =>
+                await VisitEmojiAsync(emoji, cancellationToken),
+
+            MentionNode mention =>
+                await VisitMentionAsync(mention, cancellationToken),
+
+            UnixTimestampNode timestamp =>
+                await VisitUnixTimestampAsync(timestamp, cancellationToken),
+
+            _ => throw new ArgumentOutOfRangeException(nameof(node))
+        };
+
+    public async ValueTask VisitAsync(
+        IEnumerable<MarkdownNode> nodes,
+        CancellationToken cancellationToken = default)
     {
         foreach (var node in nodes)
-            Visit(node);
+            await VisitAsync(node, cancellationToken);
     }
 }

DiscordChatExporter.Core/Utils/Extensions/CollectionExtensions.cs

@@ -0,0 +1,18 @@
+using System.Collections.Generic;
+
+namespace DiscordChatExporter.Core.Utils.Extensions;
+
+public static class CollectionExtensions
+{
+    public static IEnumerable<T> Enumerate<T>(this T obj)
+    {
+        yield return obj;
+    }
+
+    public static IEnumerable<(T value, int index)> WithIndex<T>(this IEnumerable<T> source)
+    {
+        var i = 0;
+        foreach (var o in source)
+            yield return (o, i++);
+    }
+}

DiscordChatExporter.Core/Utils/Extensions/ExceptionExtensions.cs

@@ -0,0 +1,31 @@
+using System;
+using System.Collections.Generic;
+
+namespace DiscordChatExporter.Core.Utils.Extensions;
+
+public static class ExceptionExtensions
+{
+    private static void PopulateChildren(this Exception exception, ICollection<Exception> children)
+    {
+        if (exception is AggregateException aggregateException)
+        {
+            foreach (var innerException in aggregateException.InnerExceptions)
+            {
+                children.Add(innerException);
+                PopulateChildren(innerException, children);
+            }
+        }
+        else if (exception.InnerException is not null)
+        {
+            children.Add(exception.InnerException);
+            PopulateChildren(exception.InnerException, children);
+        }
+    }
+
+    public static IReadOnlyList<Exception> GetSelfAndChildren(this Exception exception)
+    {
+        var children = new List<Exception> {exception};
+        PopulateChildren(exception, children);
+        return children;
+    }
+}

DiscordChatExporter.Core/Utils/Extensions/HttpExtensions.cs

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

DiscordChatExporter.Core/Utils/Extensions/StringExtensions.cs

@@ -1,5 +1,7 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 using System.Text;
+using System.Text.RegularExpressions;
 
 namespace DiscordChatExporter.Core.Utils.Extensions;
 
@@ -25,6 +27,14 @@ public static class StringExtensions
         }
     }
 
+    public static string ToDashCase(this string str) =>
+        Regex.Replace(str, @"(\p{Ll})(\p{Lu})", "$1-$2");
+
+    public static T? ParseEnumOrNull<T>(this string str, bool ignoreCase = true) where T : struct, Enum =>
+        Enum.TryParse<T>(str, ignoreCase, out var result)
+            ? result
+            : null;
+
     public static StringBuilder AppendIfNotEmpty(this StringBuilder builder, char value) =>
         builder.Length > 0
             ? builder.Append(value)