Add default reaction emoji property

src/Discord.Net.Core/Entities/Channels/IForumChannel.cs

@@ -53,6 +53,15 @@ namespace Discord
         /// </returns>
         int DefaultSlowModeInterval { get; }
 
+        /// <summary>
+        /// 	Gets the emoji to show in the add reaction button on a thread in a forum channel
+        /// </summary>
+        /// <remarks>
+        ///     If the emoji is <see cref="Emote"/> only the <see cref="Emote.Id"/> will be populated.
+        ///     Use <see cref="IGuild.GetEmoteAsync"/> to get the emoji.
+        /// </remarks>
+        IEmote DefaultReactionEmoji { get; }
+
         /// <summary>
         ///     Modifies this forum channel.
         /// </summary>

src/Discord.Net.Rest/API/Common/Channel.cs

@@ -82,5 +82,8 @@ namespace Discord.API
 
         [JsonProperty("flags")]
         public Optional<ChannelFlags> Flags { get; set; }
+
+        [JsonProperty("default_reaction_emoji")]
+        public Optional<ForumReactionEmoji> DefaultReactionEmoji { get; set; }
     }
 }

src/Discord.Net.Rest/API/Common/ForumReactionEmoji.cs

@@ -0,0 +1,12 @@
+using Newtonsoft.Json;
+
+namespace Discord.API;
+
+public class ForumReactionEmoji
+{
+    [JsonProperty("emoji_id")]
+    public Optional<ulong> EmojiId { get; set; }
+
+    [JsonProperty("emoji_name")]
+    public Optional<string> EmojiName { get; set; }
+}

src/Discord.Net.Rest/Entities/Channels/RestForumChannel.cs

@@ -35,6 +35,9 @@ namespace Discord.Rest
         /// <inheritdoc/>
         public ulong? CategoryId { get; private set; }
 
+        /// <inheritdoc/>
+        public IEmote DefaultReactionEmoji { get; private set; }
+
         /// <inheritdoc/>
         public string Mention => MentionUtils.MentionChannel(Id);
 
@@ -67,6 +70,16 @@ namespace Discord.Rest
             Tags = model.ForumTags.GetValueOrDefault(Array.Empty<API.ForumTags>()).Select(
                 x => new ForumTag(x.Id, x.Name, x.EmojiId.GetValueOrDefault(null), x.EmojiName.GetValueOrDefault(), x.Moderated)
             ).ToImmutableArray();
+
+            if (model.DefaultReactionEmoji.IsSpecified)
+            {
+                if (model.DefaultReactionEmoji.Value.EmojiId.IsSpecified && model.DefaultReactionEmoji.Value.EmojiId.Value != 0)
+                    DefaultReactionEmoji = new Emote(model.DefaultReactionEmoji.Value.EmojiId.Value, null, false);
+                else if (model.DefaultReactionEmoji.Value.EmojiName.IsSpecified)
+                    DefaultReactionEmoji = new Emoji(model.DefaultReactionEmoji.Value.EmojiName.Value);
+                else
+                    DefaultReactionEmoji = null;
+            }
         }
 
         /// <inheritdoc/>

src/Discord.Net.WebSocket/Entities/Channels/SocketForumChannel.cs

@@ -39,6 +39,9 @@ namespace Discord.WebSocket
         /// <inheritdoc/>
         public ulong? CategoryId { get; private set; }
 
+        /// <inheritdoc/>
+        public IEmote DefaultReactionEmoji { get; private set; }
+
         /// <summary>
         ///     Gets the parent (category) of this channel in the guild's channel list.
         /// </summary>
@@ -73,6 +76,16 @@ namespace Discord.WebSocket
             Tags = model.ForumTags.GetValueOrDefault(Array.Empty<API.ForumTags>()).Select(
                 x => new ForumTag(x.Id, x.Name, x.EmojiId.GetValueOrDefault(null), x.EmojiName.GetValueOrDefault(), x.Moderated)
             ).ToImmutableArray();
+
+            if (model.DefaultReactionEmoji.IsSpecified)
+            {
+                if (model.DefaultReactionEmoji.Value.EmojiId.IsSpecified && model.DefaultReactionEmoji.Value.EmojiId.Value != 0)
+                    DefaultReactionEmoji = new Emote(model.DefaultReactionEmoji.Value.EmojiId.Value, null, false);
+                else if (model.DefaultReactionEmoji.Value.EmojiName.IsSpecified)
+                    DefaultReactionEmoji = new Emoji(model.DefaultReactionEmoji.Value.EmojiName.Value);
+                else
+                    DefaultReactionEmoji = null;
+            }
         }
 
         /// <inheritdoc />