Add `DefaultSlowModeInterval` and `DefaultSlowModeInterval` properties to forum channels

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

@@ -35,6 +35,24 @@ namespace Discord
         /// </summary>
         IReadOnlyCollection<ForumTag> Tags { get; }
 
+        /// <summary>
+        /// Gets the current rate limit on creating posts in this forum channel.
+        /// </summary>
+        /// <returns>
+        ///     An <see cref="int"/> representing the time in seconds required before the user can send another
+        ///     message; <c>0</c> if disabled.
+        /// </returns>
+        int ThreadCreationInterval { get; }
+
+        /// <summary>
+        /// Gets the current default slow-mode delay for threads in this forum channel.
+        /// </summary>
+        /// <returns>
+        ///     An <see cref="int"/> representing the time in seconds required before the user can send another
+        ///     message; <c>0</c> if disabled.
+        /// </returns>
+        int DefaultSlowModeInterval { get; }
+
         /// <summary>
         ///     Creates a new post (thread) within the forum.
         /// </summary>

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

@@ -76,5 +76,8 @@ namespace Discord.API
 
         [JsonProperty("default_auto_archive_duration")]
         public Optional<ThreadArchiveDuration> AutoArchiveDuration { get; set; }
+
+        [JsonProperty("default_thread_rate_limit_per_user")]
+        public Optional<int> ThreadRateLimitPerUser { get; set; }
     }
 }

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

@@ -26,6 +26,12 @@ namespace Discord.Rest
         /// <inheritdoc/>
         public IReadOnlyCollection<ForumTag> Tags { get; private set; }
 
+        /// <inheritdoc/>
+        public int ThreadCreationInterval { get; private set; }
+
+        /// <inheritdoc/>
+        public int DefaultSlowModeInterval { get; private set; }
+
         /// <inheritdoc/>
         public string Mention => MentionUtils.MentionChannel(Id);
 
@@ -49,6 +55,12 @@ namespace Discord.Rest
             Topic = model.Topic.GetValueOrDefault();
             DefaultAutoArchiveDuration = model.AutoArchiveDuration.GetValueOrDefault(ThreadArchiveDuration.OneDay);
 
+            if (model.ThreadRateLimitPerUser.IsSpecified)
+                DefaultSlowModeInterval = model.ThreadRateLimitPerUser.Value;
+
+            if(model.SlowMode.IsSpecified)
+                ThreadCreationInterval = model.SlowMode.Value;
+
             Tags = model.ForumTags.GetValueOrDefault(Array.Empty<API.ForumTags>()).Select(
                 x => new ForumTag(x.Id, x.Name, x.EmojiId.GetValueOrDefault(null), x.EmojiName.GetValueOrDefault())
             ).ToImmutableArray();

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

@@ -27,6 +27,12 @@ namespace Discord.WebSocket
         /// <inheritdoc/>
         public IReadOnlyCollection<ForumTag> Tags { get; private set; }
 
+        /// <inheritdoc/>
+        public int ThreadCreationInterval { get; private set; }
+
+        /// <inheritdoc/>
+        public int DefaultSlowModeInterval { get; private set; }
+
         /// <inheritdoc/>
         public string Mention => MentionUtils.MentionChannel(Id);
 
@@ -46,6 +52,12 @@ namespace Discord.WebSocket
             Topic = model.Topic.GetValueOrDefault();
             DefaultAutoArchiveDuration = model.AutoArchiveDuration.GetValueOrDefault(ThreadArchiveDuration.OneDay);
 
+            if (model.ThreadRateLimitPerUser.IsSpecified)
+                DefaultSlowModeInterval = model.ThreadRateLimitPerUser.Value;
+
+            if (model.SlowMode.IsSpecified)
+                ThreadCreationInterval = model.SlowMode.Value;
+
             Tags = model.ForumTags.GetValueOrDefault(Array.Empty<API.ForumTags>()).Select(
                 x => new ForumTag(x.Id, x.Name, x.EmojiId.GetValueOrDefault(null), x.EmojiName.GetValueOrDefault())
             ).ToImmutableArray();