Implement attachment flags.

See discord/discord-api-docs#6272.

Backend/Remora.Discord.API.Abstractions/API/Objects/Messages/AttachmentFlags.cs

@@ -0,0 +1,39 @@
+//
+//  AttachmentFlags.cs
+//
+//  Author:
+//       Jarl Gullberg <[email protected]>
+//
+//  Copyright (c) Jarl Gullberg
+//
+//  This program is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU Lesser General Public License as published by
+//  the Free Software Foundation, either version 3 of the License, or
+//  (at your option) any later version.
+//
+//  This program is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU Lesser General Public License for more details.
+//
+//  You should have received a copy of the GNU Lesser General Public License
+//  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+
+using System;
+using JetBrains.Annotations;
+
+namespace Remora.Discord.API.Abstractions.Objects;
+
+/// <summary>
+/// Enumerates various flags applied to an attachment.
+/// </summary>
+[PublicAPI]
+[Flags]
+public enum AttachmentFlags
+{
+    /// <summary>
+    /// The attachment has been edited using the remix feature.
+    /// </summary>
+    IsRemix = 1 << 2
+}

Backend/Remora.Discord.API.Abstractions/API/Objects/Messages/IAttachment.cs

@@ -94,6 +94,11 @@ public interface IAttachment : IPartialAttachment
     /// </summary>
     new Optional<byte[]> Waveform { get; }
 
+    /// <summary>
+    /// Gets the flags applied to the attachment.
+    /// </summary>
+    new Optional<AttachmentFlags> Flags { get; }
+
     /// <inheritdoc/>
     Optional<Snowflake> IPartialAttachment.ID => this.ID;
 
@@ -129,4 +134,7 @@ public interface IAttachment : IPartialAttachment
 
     /// <inheritdoc/>
     Optional<byte[]> IPartialAttachment.Waveform => this.Waveform;
+
+    /// <inheritdoc/>
+    Optional<AttachmentFlags> IPartialAttachment.Flags => this.Flags;
 }

Backend/Remora.Discord.API.Abstractions/API/Objects/Messages/IPartialAttachment.cs

@@ -65,4 +65,7 @@ public interface IPartialAttachment
 
     /// <inheritdoc cref="IAttachment.Waveform"/>
     Optional<byte[]> Waveform { get; }
+
+    /// <inheritdoc cref="IAttachment.Flags"/>
+    Optional<AttachmentFlags> Flags { get; }
 }

Backend/Remora.Discord.API/API/Objects/Messages/Attachment.cs

@@ -44,5 +44,6 @@ public record Attachment
     Optional<int?> Width,
     Optional<bool> IsEphemeral,
     Optional<TimeSpan> Duration,
-    Optional<byte[]> Waveform
+    Optional<byte[]> Waveform,
+    Optional<AttachmentFlags> Flags
 ) : IAttachment;

Backend/Remora.Discord.API/API/Objects/Messages/PartialAttachment.cs

@@ -44,5 +44,6 @@ public record PartialAttachment
     Optional<int?> Width = default,
     Optional<bool> IsEphemeral = default,
     Optional<TimeSpan> Duration = default,
-    Optional<byte[]> Waveform = default
+    Optional<byte[]> Waveform = default,
+    Optional<AttachmentFlags> Flags = default
 ) : IPartialAttachment;

Tests/Remora.Discord.Tests/Samples/Objects/ATTACHMENT/ATTACHMENT.json

@@ -10,5 +10,6 @@
   "width": 1,
   "ephemeral": true,
   "duration_secs": 10,
-  "waveform": "bm9uZQ=="
+  "waveform": "bm9uZQ==",
+  "flags": 0
 }

Tests/Remora.Discord.Tests/Samples/Objects/ATTACHMENT/ATTACHMENT.nulls.json

@@ -8,5 +8,8 @@
   "proxy_url": "https://www.example.org",
   "height": null,
   "width": null,
-  "ephemeral": true
-}
+  "ephemeral": true,
+  "duration_secs": 10,
+  "waveform": "bm9uZQ==",
+  "flags": 0
+}