support creating post with applied tags

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

@@ -101,12 +101,13 @@ namespace Discord
         /// <param name="stickers">A collection of stickers to send with the message.</param>
         /// <param name="embeds">A array of <see cref="Embed"/>s to send with this response. Max 10.</param>
         /// <param name="flags">A message flag to be applied to the sent message, only <see cref="MessageFlags.SuppressEmbeds"/> is permitted.</param>
+        /// <param name="tags">An array of <see cref="ForumTag"/> to be applied to the post.</param>
         /// <returns>
         ///     A task that represents the asynchronous creation operation.
         /// </returns>
         Task<IThreadChannel> CreatePostAsync(string title, ThreadArchiveDuration archiveDuration = ThreadArchiveDuration.OneDay, int? slowmode = null,
             string text = null, Embed embed = null, RequestOptions options = null, AllowedMentions allowedMentions = null,
-            MessageComponent components = null, ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None);
+            MessageComponent components = null, ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None, ForumTag[] tags = null);
 
         /// <summary>
         ///     Creates a new post (thread) within the forum.
@@ -127,13 +128,14 @@ namespace Discord
         /// <param name="stickers">A collection of stickers to send with the file.</param>
         /// <param name="embeds">A array of <see cref="Embed"/>s to send with this response. Max 10.</param>
         /// <param name="flags">A message flag to be applied to the sent message, only <see cref="MessageFlags.SuppressEmbeds"/> is permitted.</param>
+        /// <param name="tags">An array of <see cref="ForumTag"/> to be applied to the post.</param>
         /// <returns>
         ///     A task that represents the asynchronous creation operation.
         /// </returns>
         Task<IThreadChannel> CreatePostWithFileAsync(string title, string filePath, ThreadArchiveDuration archiveDuration = ThreadArchiveDuration.OneDay,
             int? slowmode = null, string text = null, Embed embed = null, RequestOptions options = null, bool isSpoiler = false,
             AllowedMentions allowedMentions = null, MessageComponent components = null,
-            ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None);
+            ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None, ForumTag[] tags = null);
 
         /// <summary>
         ///     Creates a new post (thread) within the forum.
@@ -155,13 +157,14 @@ namespace Discord
         /// <param name="stickers">A collection of stickers to send with the file.</param>
         /// <param name="embeds">A array of <see cref="Embed"/>s to send with this response. Max 10.</param>
         /// <param name="flags">A message flag to be applied to the sent message, only <see cref="MessageFlags.SuppressEmbeds"/> is permitted.</param>
+        /// <param name="tags">An array of <see cref="ForumTag"/> to be applied to the post.</param>
         /// <returns>
         ///     A task that represents the asynchronous creation operation.
         /// </returns>
         public Task<IThreadChannel> CreatePostWithFileAsync(string title, Stream stream, string filename, ThreadArchiveDuration archiveDuration = ThreadArchiveDuration.OneDay,
             int? slowmode = null, string text = null, Embed embed = null, RequestOptions options = null, bool isSpoiler = false,
             AllowedMentions allowedMentions = null, MessageComponent components = null,
-            ISticker[] stickers = null, Embed[] embeds = null,MessageFlags flags = MessageFlags.None);
+            ISticker[] stickers = null, Embed[] embeds = null,MessageFlags flags = MessageFlags.None, ForumTag[] tags = null);
 
         /// <summary>
         ///     Creates a new post (thread) within the forum.
@@ -181,12 +184,13 @@ namespace Discord
         /// <param name="stickers">A collection of stickers to send with the file.</param>
         /// <param name="embeds">A array of <see cref="Embed"/>s to send with this response. Max 10.</param>
         /// <param name="flags">A message flag to be applied to the sent message, only <see cref="MessageFlags.SuppressEmbeds"/> is permitted.</param>
+        /// <param name="tags">An array of <see cref="ForumTag"/> to be applied to the post.</param>
         /// <returns>
         ///     A task that represents the asynchronous creation operation.
         /// </returns>
         public Task<IThreadChannel> CreatePostWithFileAsync(string title, FileAttachment attachment, ThreadArchiveDuration archiveDuration = ThreadArchiveDuration.OneDay,
             int? slowmode = null, string text = null, Embed embed = null, RequestOptions options = null, AllowedMentions allowedMentions = null,
-            MessageComponent components = null, ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None);
+            MessageComponent components = null, ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None, ForumTag[] tags = null);
 
         /// <summary>
         ///     Creates a new post (thread) within the forum.
@@ -204,14 +208,15 @@ namespace Discord
         /// </param>
         /// <param name="components">The message components to be included with this message. Used for interactions.</param>
         /// <param name="stickers">A collection of stickers to send with the file.</param>
-        /// <param name="embeds">A array of <see cref="Embed"/>s to send with this response. Max 10.</param>
+        /// <param name="embeds">An array of <see cref="Embed"/>s to send with this response. Max 10.</param>
         /// <param name="flags">A message flag to be applied to the sent message, only <see cref="MessageFlags.SuppressEmbeds"/> is permitted.</param>
+        /// <param name="tags">An array of <see cref="ForumTag"/> to be applied to the post.</param>
         /// <returns>
         ///     A task that represents the asynchronous creation operation.
         /// </returns>
         public Task<IThreadChannel> CreatePostWithFilesAsync(string title, IEnumerable<FileAttachment> attachments, ThreadArchiveDuration archiveDuration = ThreadArchiveDuration.OneDay,
             int? slowmode = null, string text = null, Embed embed = null, RequestOptions options = null, AllowedMentions allowedMentions = null,
-            MessageComponent components = null, ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None);
+            MessageComponent components = null, ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None, ForumTag[] tags = null);
 
         /// <summary>
         ///     Gets a collection of active threads within this forum channel.

src/Discord.Net.Rest/API/Rest/CreateMultipartPostAsync.cs

@@ -27,6 +27,7 @@ namespace Discord.API.Rest
         public Optional<ActionRowComponent[]> MessageComponent { get; set; }
         public Optional<MessageFlags?> Flags { get; set; }
         public Optional<ulong[]> Stickers { get; set; }
+        public Optional<ulong[]> TagIds { get; set; }
 
         public CreateMultipartPostAsync(params FileAttachment[] attachments)
         {
@@ -59,6 +60,8 @@ namespace Discord.API.Rest
                 message["sticker_ids"] = Stickers.Value;
             if (Flags.IsSpecified)
                 message["flags"] = Flags.Value;
+            if (TagIds.IsSpecified)
+                message["applied_tags"] = TagIds.Value;
 
             List<object> attachments = new();
 

src/Discord.Net.Rest/API/Rest/CreatePostParams.cs

@@ -21,5 +21,8 @@ namespace Discord.API.Rest
 
         [JsonProperty("message")]
         public ForumThreadMessage Message { get; set; }
+
+        [JsonProperty("applied_tags")]
+        public Optional<ulong[]> Tags { get; set; }
     }
 }

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

@@ -94,41 +94,43 @@ namespace Discord.Rest
             Update(model);
         }
 
-        /// <inheritdoc cref="IForumChannel.CreatePostAsync(string, ThreadArchiveDuration, int?, string, Embed, RequestOptions, AllowedMentions, MessageComponent, ISticker[], Embed[], MessageFlags)"/>
-        public Task<RestThreadChannel> CreatePostAsync(string title, ThreadArchiveDuration archiveDuration = ThreadArchiveDuration.OneDay, int? slowmode = null, string text = null, Embed embed = null, RequestOptions options = null, AllowedMentions allowedMentions = null, MessageComponent components = null, ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None)
-            => ThreadHelper.CreatePostAsync(this, Discord, title, archiveDuration, slowmode, text, embed, options, allowedMentions, components, stickers, embeds, flags);
+        /// <inheritdoc cref="IForumChannel.CreatePostAsync(string, ThreadArchiveDuration, int?, string, Embed, RequestOptions, AllowedMentions, MessageComponent, ISticker[], Embed[], MessageFlags, ForumTag[])"/>
+        public Task<RestThreadChannel> CreatePostAsync(string title, ThreadArchiveDuration archiveDuration = ThreadArchiveDuration.OneDay, int? slowmode = null, 
+            string text = null, Embed embed = null, RequestOptions options = null, AllowedMentions allowedMentions = null, MessageComponent components = null, ISticker[] stickers = null,
+            Embed[] embeds = null, MessageFlags flags = MessageFlags.None, ForumTag[] tags = null)
+            => ThreadHelper.CreatePostAsync(this, Discord, title, archiveDuration, slowmode, text, embed, options, allowedMentions, components, stickers, embeds, flags, tags?.Select(tag => tag.Id).ToArray());
 
         /// <inheritdoc cref="IForumChannel.CreatePostWithFileAsync(string, string, ThreadArchiveDuration, int?, string, Embed, RequestOptions, bool, AllowedMentions, MessageComponent, ISticker[], Embed[], MessageFlags)"/>
         public async Task<RestThreadChannel> CreatePostWithFileAsync(string title, string filePath, ThreadArchiveDuration archiveDuration = ThreadArchiveDuration.OneDay,
             int? slowmode = null, string text = null, Embed embed = null, RequestOptions options = null, bool isSpoiler = false,
             AllowedMentions allowedMentions = null, MessageComponent components = null,
-            ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None)
+            ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None, ForumTag[] tags = null)
         {
             using var file = new FileAttachment(filePath, isSpoiler: isSpoiler);
-            return await ThreadHelper.CreatePostAsync(this, Discord, title, new FileAttachment[] { file }, archiveDuration, slowmode, text, embed, options, allowedMentions, components, stickers, embeds, flags).ConfigureAwait(false);
+            return await ThreadHelper.CreatePostAsync(this, Discord, title, new FileAttachment[] { file }, archiveDuration, slowmode, text, embed, options, allowedMentions, components, stickers, embeds, flags, tags?.Select(tag => tag.Id).ToArray()).ConfigureAwait(false);
         }
 
         /// <inheritdoc cref="IForumChannel.CreatePostWithFileAsync(string, Stream, string, ThreadArchiveDuration, int?, string, Embed, RequestOptions, bool, AllowedMentions, MessageComponent, ISticker[], Embed[], MessageFlags)"/>
         public async Task<RestThreadChannel> CreatePostWithFileAsync(string title, Stream stream, string filename, ThreadArchiveDuration archiveDuration = ThreadArchiveDuration.OneDay,
             int? slowmode = null, string text = null, Embed embed = null, RequestOptions options = null, bool isSpoiler = false,
             AllowedMentions allowedMentions = null, MessageComponent components = null,
-            ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None)
+            ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None, ForumTag[] tags = null)
         {
             using var file = new FileAttachment(stream, filename, isSpoiler: isSpoiler);
-            return await ThreadHelper.CreatePostAsync(this, Discord, title, new FileAttachment[] { file }, archiveDuration, slowmode, text, embed, options, allowedMentions, components, stickers, embeds, flags).ConfigureAwait(false);
+            return await ThreadHelper.CreatePostAsync(this, Discord, title, new FileAttachment[] { file }, archiveDuration, slowmode, text, embed, options, allowedMentions, components, stickers, embeds, flags, tags?.Select(tag => tag.Id).ToArray()).ConfigureAwait(false);
         }
 
         /// <inheritdoc cref="IForumChannel.CreatePostWithFileAsync(string, FileAttachment, ThreadArchiveDuration, int?, string, Embed, RequestOptions, AllowedMentions, MessageComponent, ISticker[], Embed[], MessageFlags)"/>
         public Task<RestThreadChannel> CreatePostWithFileAsync(string title, FileAttachment attachment, ThreadArchiveDuration archiveDuration = ThreadArchiveDuration.OneDay,
             int? slowmode = null, string text = null, Embed embed = null, RequestOptions options = null, AllowedMentions allowedMentions = null,
-            MessageComponent components = null, ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None)
-            => ThreadHelper.CreatePostAsync(this, Discord, title, new FileAttachment[] { attachment }, archiveDuration, slowmode, text, embed, options, allowedMentions, components, stickers, embeds, flags);
+            MessageComponent components = null, ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None, ForumTag[] tags = null)
+            => ThreadHelper.CreatePostAsync(this, Discord, title, new FileAttachment[] { attachment }, archiveDuration, slowmode, text, embed, options, allowedMentions, components, stickers, embeds, flags, tags?.Select(tag => tag.Id).ToArray());
 
         /// <inheritdoc cref="IForumChannel.CreatePostWithFilesAsync(string, IEnumerable{FileAttachment}, ThreadArchiveDuration, int?, string, Embed, RequestOptions, AllowedMentions, MessageComponent, ISticker[], Embed[], MessageFlags)"/>
         public Task<RestThreadChannel> CreatePostWithFilesAsync(string title, IEnumerable<FileAttachment> attachments, ThreadArchiveDuration archiveDuration = ThreadArchiveDuration.OneDay,
             int? slowmode = null, string text = null, Embed embed = null, RequestOptions options = null, AllowedMentions allowedMentions = null,
-            MessageComponent components = null, ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None)
-            => ThreadHelper.CreatePostAsync(this, Discord, title, attachments, archiveDuration, slowmode, text, embed, options, allowedMentions, components, stickers, embeds, flags);
+            MessageComponent components = null, ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None, ForumTag[] tags = null)
+            => ThreadHelper.CreatePostAsync(this, Discord, title, attachments, archiveDuration, slowmode, text, embed, options, allowedMentions, components, stickers, embeds, flags, tags?.Select(tag => tag.Id).ToArray());
 
         /// <inheritdoc cref="IForumChannel.GetActiveThreadsAsync(RequestOptions)"/>
         public Task<IReadOnlyCollection<RestThreadChannel>> GetActiveThreadsAsync(RequestOptions options = null)
@@ -155,15 +157,15 @@ namespace Discord.Rest
             => await GetPrivateArchivedThreadsAsync(limit, before, options).ConfigureAwait(false);
         async Task<IReadOnlyCollection<IThreadChannel>> IForumChannel.GetJoinedPrivateArchivedThreadsAsync(int? limit, DateTimeOffset? before, RequestOptions options)
             => await GetJoinedPrivateArchivedThreadsAsync(limit, before, options).ConfigureAwait(false);
-        async Task<IThreadChannel> IForumChannel.CreatePostAsync(string title, ThreadArchiveDuration archiveDuration, int? slowmode, string text, Embed embed, RequestOptions options, AllowedMentions allowedMentions, MessageComponent components, ISticker[] stickers, Embed[] embeds, MessageFlags flags)
+        async Task<IThreadChannel> IForumChannel.CreatePostAsync(string title, ThreadArchiveDuration archiveDuration, int? slowmode, string text, Embed embed, RequestOptions options, AllowedMentions allowedMentions, MessageComponent components, ISticker[] stickers, Embed[] embeds, MessageFlags flags, ForumTag[] tags)
             => await CreatePostAsync(title, archiveDuration, slowmode, text, embed, options, allowedMentions, components, stickers, embeds, flags).ConfigureAwait(false);
-        async Task<IThreadChannel> IForumChannel.CreatePostWithFileAsync(string title, string filePath, ThreadArchiveDuration archiveDuration, int? slowmode, string text, Embed embed, RequestOptions options, bool isSpoiler, AllowedMentions allowedMentions, MessageComponent components, ISticker[] stickers, Embed[] embeds, MessageFlags flags)
+        async Task<IThreadChannel> IForumChannel.CreatePostWithFileAsync(string title, string filePath, ThreadArchiveDuration archiveDuration, int? slowmode, string text, Embed embed, RequestOptions options, bool isSpoiler, AllowedMentions allowedMentions, MessageComponent components, ISticker[] stickers, Embed[] embeds, MessageFlags flags, ForumTag[] tags)
             => await CreatePostWithFileAsync(title, filePath, archiveDuration, slowmode, text, embed, options, isSpoiler, allowedMentions, components, stickers, embeds, flags).ConfigureAwait(false);
-        async Task<IThreadChannel> IForumChannel.CreatePostWithFileAsync(string title, Stream stream, string filename, ThreadArchiveDuration archiveDuration, int? slowmode, string text, Embed embed, RequestOptions options, bool isSpoiler, AllowedMentions allowedMentions, MessageComponent components, ISticker[] stickers, Embed[] embeds, MessageFlags flags)
+        async Task<IThreadChannel> IForumChannel.CreatePostWithFileAsync(string title, Stream stream, string filename, ThreadArchiveDuration archiveDuration, int? slowmode, string text, Embed embed, RequestOptions options, bool isSpoiler, AllowedMentions allowedMentions, MessageComponent components, ISticker[] stickers, Embed[] embeds, MessageFlags flags, ForumTag[] tags)
             => await CreatePostWithFileAsync(title, stream, filename, archiveDuration, slowmode, text, embed, options, isSpoiler, allowedMentions, components, stickers, embeds, flags).ConfigureAwait(false);
-        async Task<IThreadChannel> IForumChannel.CreatePostWithFileAsync(string title, FileAttachment attachment, ThreadArchiveDuration archiveDuration, int? slowmode, string text, Embed embed, RequestOptions options, AllowedMentions allowedMentions, MessageComponent components, ISticker[] stickers, Embed[] embeds, MessageFlags flags)
+        async Task<IThreadChannel> IForumChannel.CreatePostWithFileAsync(string title, FileAttachment attachment, ThreadArchiveDuration archiveDuration, int? slowmode, string text, Embed embed, RequestOptions options, AllowedMentions allowedMentions, MessageComponent components, ISticker[] stickers, Embed[] embeds, MessageFlags flags, ForumTag[] tags)
             => await CreatePostWithFileAsync(title, attachment, archiveDuration, slowmode, text, embed, options, allowedMentions, components, stickers, embeds, flags).ConfigureAwait(false);
-        async Task<IThreadChannel> IForumChannel.CreatePostWithFilesAsync(string title, IEnumerable<FileAttachment> attachments, ThreadArchiveDuration archiveDuration, int? slowmode, string text, Embed embed, RequestOptions options, AllowedMentions allowedMentions, MessageComponent components, ISticker[] stickers, Embed[] embeds, MessageFlags flags)
+        async Task<IThreadChannel> IForumChannel.CreatePostWithFilesAsync(string title, IEnumerable<FileAttachment> attachments, ThreadArchiveDuration archiveDuration, int? slowmode, string text, Embed embed, RequestOptions options, AllowedMentions allowedMentions, MessageComponent components, ISticker[] stickers, Embed[] embeds, MessageFlags flags, ForumTag[] tags)
             => await CreatePostWithFilesAsync(title, attachments, archiveDuration, slowmode, text, embed, options, allowedMentions, components, stickers, embeds, flags);
 
         #endregion

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

@@ -105,7 +105,10 @@ namespace Discord.Rest
             return RestThreadUser.Create(client, channel.Guild, model, channel);
         }
 
-        public static async Task<RestThreadChannel> CreatePostAsync(IForumChannel channel, BaseDiscordClient client, string title, ThreadArchiveDuration archiveDuration = ThreadArchiveDuration.OneDay, int? slowmode = null, string text = null, Embed embed = null, RequestOptions options = null, AllowedMentions allowedMentions = null, MessageComponent components = null, ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None)
+        public static async Task<RestThreadChannel> CreatePostAsync(IForumChannel channel, BaseDiscordClient client, string title,
+            ThreadArchiveDuration archiveDuration = ThreadArchiveDuration.OneDay, int? slowmode = null, string text = null, Embed embed = null,
+            RequestOptions options = null, AllowedMentions allowedMentions = null, MessageComponent components = null, ISticker[] stickers = null,
+            Embed[] embeds = null, MessageFlags flags = MessageFlags.None, ulong[] tagIds = null)
         {
             embeds ??= Array.Empty<Embed>();
             if (embed != null)
@@ -136,10 +139,12 @@ namespace Discord.Rest
                 Preconditions.AtMost(stickers.Length, 3, nameof(stickers), "A max of 3 stickers are allowed.");
             }
 
-
             if (flags is not MessageFlags.None and not MessageFlags.SuppressEmbeds)
                 throw new ArgumentException("The only valid MessageFlags are SuppressEmbeds and none.", nameof(flags));
 
+            if (channel.Flags.HasFlag(ChannelFlags.RequireTag))
+                throw new ArgumentException($"The channel {channel.Name} requires posts to have at least one tag.");
+
             var args = new CreatePostParams()
             {
                 Title = title,
@@ -153,7 +158,8 @@ namespace Discord.Rest
                     Flags = flags,
                     Components = components?.Components?.Any() ?? false ? components.Components.Select(x => new API.ActionRowComponent(x)).ToArray() : Optional<API.ActionRowComponent[]>.Unspecified,
                     Stickers = stickers?.Any() ?? false ? stickers.Select(x => x.Id).ToArray() : Optional<ulong[]>.Unspecified,
-                }
+                },
+                Tags = tagIds
             };
 
             var model = await client.ApiClient.CreatePostAsync(channel.Id, args, options).ConfigureAwait(false);
@@ -161,7 +167,9 @@ namespace Discord.Rest
             return RestThreadChannel.Create(client, channel.Guild, model);
         }
 
-        public static async Task<RestThreadChannel> CreatePostAsync(IForumChannel channel, BaseDiscordClient client, string title, IEnumerable<FileAttachment> attachments, ThreadArchiveDuration archiveDuration, int? slowmode, string text, Embed embed, RequestOptions options, AllowedMentions allowedMentions, MessageComponent components, ISticker[] stickers, Embed[] embeds, MessageFlags flags)
+        public static async Task<RestThreadChannel> CreatePostAsync(IForumChannel channel, BaseDiscordClient client, string title, IEnumerable<FileAttachment> attachments,
+            ThreadArchiveDuration archiveDuration, int? slowmode, string text, Embed embed, RequestOptions options, AllowedMentions allowedMentions, MessageComponent components,
+            ISticker[] stickers, Embed[] embeds, MessageFlags flags, ulong[] tagIds = null)
         {
             embeds ??= Array.Empty<Embed>();
             if (embed != null)
@@ -192,9 +200,11 @@ namespace Discord.Rest
                 Preconditions.AtMost(stickers.Length, 3, nameof(stickers), "A max of 3 stickers are allowed.");
             }
 
-
             if (flags is not MessageFlags.None and not MessageFlags.SuppressEmbeds)
                 throw new ArgumentException("The only valid MessageFlags are SuppressEmbeds and none.", nameof(flags));
+            
+            if (channel.Flags.HasFlag(ChannelFlags.RequireTag))
+                throw new ArgumentException($"The channel {channel.Name} requires posts to have at least one tag.");
 
             var args = new CreateMultipartPostAsync(attachments.ToArray())
             {

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

@@ -97,41 +97,41 @@ namespace Discord.WebSocket
         public virtual Task ModifyAsync(Action<ForumChannelProperties> func, RequestOptions options = null)
             => ForumHelper.ModifyAsync(this, Discord, func, options);
 
-        /// <inheritdoc cref="IForumChannel.CreatePostAsync(string, ThreadArchiveDuration, int?, string, Embed, RequestOptions, AllowedMentions, MessageComponent, ISticker[], Embed[], MessageFlags)"/>
-        public Task<RestThreadChannel> CreatePostAsync(string title, ThreadArchiveDuration archiveDuration = ThreadArchiveDuration.OneDay, int? slowmode = null, string text = null, Embed embed = null, RequestOptions options = null, AllowedMentions allowedMentions = null, MessageComponent components = null, ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None)
-            => ThreadHelper.CreatePostAsync(this, Discord, title, archiveDuration, slowmode, text, embed, options, allowedMentions, components, stickers, embeds, flags);
+        /// <inheritdoc cref="IForumChannel.CreatePostAsync(string, ThreadArchiveDuration, int?, string, Embed, RequestOptions, AllowedMentions, MessageComponent, ISticker[], Embed[], MessageFlags, ForumTag[])"/>
+        public Task<RestThreadChannel> CreatePostAsync(string title, ThreadArchiveDuration archiveDuration = ThreadArchiveDuration.OneDay, int? slowmode = null, string text = null, Embed embed = null, RequestOptions options = null, AllowedMentions allowedMentions = null, MessageComponent components = null, ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None, ForumTag[] tags = null)
+            => ThreadHelper.CreatePostAsync(this, Discord, title, archiveDuration, slowmode, text, embed, options, allowedMentions, components, stickers, embeds, flags, tags?.Select(tag => tag.Id).ToArray());
 
-        /// <inheritdoc cref="IForumChannel.CreatePostWithFileAsync(string, string, ThreadArchiveDuration, int?, string, Embed, RequestOptions, bool, AllowedMentions, MessageComponent, ISticker[], Embed[], MessageFlags)"/>
+        /// <inheritdoc cref="IForumChannel.CreatePostWithFileAsync(string, string, ThreadArchiveDuration, int?, string, Embed, RequestOptions, bool, AllowedMentions, MessageComponent, ISticker[], Embed[], MessageFlags, ForumTag[])"/>
         public async Task<RestThreadChannel> CreatePostWithFileAsync(string title, string filePath, ThreadArchiveDuration archiveDuration = ThreadArchiveDuration.OneDay,
             int? slowmode = null, string text = null, Embed embed = null, RequestOptions options = null, bool isSpoiler = false,
             AllowedMentions allowedMentions = null, MessageComponent components = null,
-            ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None)
+            ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None, ForumTag[] tags = null)
         {
             using var file = new FileAttachment(filePath, isSpoiler: isSpoiler);
-            return await ThreadHelper.CreatePostAsync(this, Discord, title, new FileAttachment[] { file }, archiveDuration, slowmode, text, embed, options, allowedMentions, components, stickers, embeds, flags).ConfigureAwait(false);
+            return await ThreadHelper.CreatePostAsync(this, Discord, title, new FileAttachment[] { file }, archiveDuration, slowmode, text, embed, options, allowedMentions, components, stickers, embeds, flags, tags?.Select(tag => tag.Id).ToArray()).ConfigureAwait(false);
         }
 
-        /// <inheritdoc cref="IForumChannel.CreatePostWithFileAsync(string, Stream, string, ThreadArchiveDuration, int?, string, Embed, RequestOptions, bool, AllowedMentions, MessageComponent, ISticker[], Embed[], MessageFlags)"/>
+        /// <inheritdoc cref="IForumChannel.CreatePostWithFileAsync(string, Stream, string, ThreadArchiveDuration, int?, string, Embed, RequestOptions, bool, AllowedMentions, MessageComponent, ISticker[], Embed[], MessageFlags, ForumTag[])"/>
         public async Task<RestThreadChannel> CreatePostWithFileAsync(string title, Stream stream, string filename, ThreadArchiveDuration archiveDuration = ThreadArchiveDuration.OneDay,
             int? slowmode = null, string text = null, Embed embed = null, RequestOptions options = null, bool isSpoiler = false,
             AllowedMentions allowedMentions = null, MessageComponent components = null,
-            ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None)
+            ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None, ForumTag[] tags = null)
         {
             using var file = new FileAttachment(stream, filename, isSpoiler: isSpoiler);
-            return await ThreadHelper.CreatePostAsync(this, Discord, title, new FileAttachment[] { file }, archiveDuration, slowmode, text, embed, options, allowedMentions, components, stickers, embeds, flags).ConfigureAwait(false);
+            return await ThreadHelper.CreatePostAsync(this, Discord, title, new FileAttachment[] { file }, archiveDuration, slowmode, text, embed, options, allowedMentions, components, stickers, embeds, flags, tags?.Select(tag => tag.Id).ToArray()).ConfigureAwait(false);
         }
 
-        /// <inheritdoc cref="IForumChannel.CreatePostWithFileAsync(string, FileAttachment, ThreadArchiveDuration, int?, string, Embed, RequestOptions, AllowedMentions, MessageComponent, ISticker[], Embed[], MessageFlags)"/>
+        /// <inheritdoc cref="IForumChannel.CreatePostWithFileAsync(string, FileAttachment, ThreadArchiveDuration, int?, string, Embed, RequestOptions, AllowedMentions, MessageComponent, ISticker[], Embed[], MessageFlags, ForumTag[])"/>
         public Task<RestThreadChannel> CreatePostWithFileAsync(string title, FileAttachment attachment, ThreadArchiveDuration archiveDuration = ThreadArchiveDuration.OneDay,
             int? slowmode = null, string text = null, Embed embed = null, RequestOptions options = null, AllowedMentions allowedMentions = null,
-            MessageComponent components = null, ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None)
-            => ThreadHelper.CreatePostAsync(this, Discord, title, new FileAttachment[] { attachment }, archiveDuration, slowmode, text, embed, options, allowedMentions, components, stickers, embeds, flags);
+            MessageComponent components = null, ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None, ForumTag[] tags = null)
+            => ThreadHelper.CreatePostAsync(this, Discord, title, new FileAttachment[] { attachment }, archiveDuration, slowmode, text, embed, options, allowedMentions, components, stickers, embeds, flags, tags?.Select(tag => tag.Id).ToArray());
 
-        /// <inheritdoc cref="IForumChannel.CreatePostWithFilesAsync(string, IEnumerable{FileAttachment}, ThreadArchiveDuration, int?, string, Embed, RequestOptions, AllowedMentions, MessageComponent, ISticker[], Embed[], MessageFlags)"/>
+        /// <inheritdoc cref="IForumChannel.CreatePostWithFilesAsync(string, IEnumerable{FileAttachment}, ThreadArchiveDuration, int?, string, Embed, RequestOptions, AllowedMentions, MessageComponent, ISticker[], Embed[], MessageFlags, ForumTag[])"/>
         public Task<RestThreadChannel> CreatePostWithFilesAsync(string title, IEnumerable<FileAttachment> attachments, ThreadArchiveDuration archiveDuration = ThreadArchiveDuration.OneDay,
             int? slowmode = null, string text = null, Embed embed = null, RequestOptions options = null, AllowedMentions allowedMentions = null,
-            MessageComponent components = null, ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None)
-            => ThreadHelper.CreatePostAsync(this, Discord, title, attachments, archiveDuration, slowmode, text, embed, options, allowedMentions, components, stickers, embeds, flags);
+            MessageComponent components = null, ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None, ForumTag[] tags = null)
+            => ThreadHelper.CreatePostAsync(this, Discord, title, attachments, archiveDuration, slowmode, text, embed, options, allowedMentions, components, stickers, embeds, flags, tags?.Select(tag => tag.Id).ToArray());
 
         /// <inheritdoc cref="IForumChannel.GetActiveThreadsAsync(RequestOptions)"/>
         public Task<IReadOnlyCollection<RestThreadChannel>> GetActiveThreadsAsync(RequestOptions options = null)
@@ -158,15 +158,15 @@ namespace Discord.WebSocket
             => await GetPrivateArchivedThreadsAsync(limit, before, options).ConfigureAwait(false);
         async Task<IReadOnlyCollection<IThreadChannel>> IForumChannel.GetJoinedPrivateArchivedThreadsAsync(int? limit, DateTimeOffset? before, RequestOptions options)
             => await GetJoinedPrivateArchivedThreadsAsync(limit, before, options).ConfigureAwait(false);
-        async Task<IThreadChannel> IForumChannel.CreatePostAsync(string title, ThreadArchiveDuration archiveDuration, int? slowmode, string text, Embed embed, RequestOptions options, AllowedMentions allowedMentions, MessageComponent components, ISticker[] stickers, Embed[] embeds, MessageFlags flags)
+        async Task<IThreadChannel> IForumChannel.CreatePostAsync(string title, ThreadArchiveDuration archiveDuration, int? slowmode, string text, Embed embed, RequestOptions options, AllowedMentions allowedMentions, MessageComponent components, ISticker[] stickers, Embed[] embeds, MessageFlags flags, ForumTag[] tags)
             => await CreatePostAsync(title, archiveDuration, slowmode, text, embed, options, allowedMentions, components, stickers, embeds, flags).ConfigureAwait(false);
-        async Task<IThreadChannel> IForumChannel.CreatePostWithFileAsync(string title, string filePath, ThreadArchiveDuration archiveDuration, int? slowmode, string text, Embed embed, RequestOptions options, bool isSpoiler, AllowedMentions allowedMentions, MessageComponent components, ISticker[] stickers, Embed[] embeds, MessageFlags flags)
+        async Task<IThreadChannel> IForumChannel.CreatePostWithFileAsync(string title, string filePath, ThreadArchiveDuration archiveDuration, int? slowmode, string text, Embed embed, RequestOptions options, bool isSpoiler, AllowedMentions allowedMentions, MessageComponent components, ISticker[] stickers, Embed[] embeds, MessageFlags flags, ForumTag[] tags)
             => await CreatePostWithFileAsync(title, filePath, archiveDuration, slowmode, text, embed, options, isSpoiler, allowedMentions, components, stickers, embeds, flags).ConfigureAwait(false);
-        async Task<IThreadChannel> IForumChannel.CreatePostWithFileAsync(string title, Stream stream, string filename, ThreadArchiveDuration archiveDuration, int? slowmode, string text, Embed embed, RequestOptions options, bool isSpoiler, AllowedMentions allowedMentions, MessageComponent components, ISticker[] stickers, Embed[] embeds, MessageFlags flags)
+        async Task<IThreadChannel> IForumChannel.CreatePostWithFileAsync(string title, Stream stream, string filename, ThreadArchiveDuration archiveDuration, int? slowmode, string text, Embed embed, RequestOptions options, bool isSpoiler, AllowedMentions allowedMentions, MessageComponent components, ISticker[] stickers, Embed[] embeds, MessageFlags flags, ForumTag[] tags)
             => await CreatePostWithFileAsync(title, stream, filename, archiveDuration, slowmode, text, embed, options, isSpoiler, allowedMentions, components, stickers, embeds, flags).ConfigureAwait(false);
-        async Task<IThreadChannel> IForumChannel.CreatePostWithFileAsync(string title, FileAttachment attachment, ThreadArchiveDuration archiveDuration, int? slowmode, string text, Embed embed, RequestOptions options, AllowedMentions allowedMentions, MessageComponent components, ISticker[] stickers, Embed[] embeds, MessageFlags flags)
+        async Task<IThreadChannel> IForumChannel.CreatePostWithFileAsync(string title, FileAttachment attachment, ThreadArchiveDuration archiveDuration, int? slowmode, string text, Embed embed, RequestOptions options, AllowedMentions allowedMentions, MessageComponent components, ISticker[] stickers, Embed[] embeds, MessageFlags flags, ForumTag[] tags)
             => await CreatePostWithFileAsync(title, attachment, archiveDuration, slowmode, text, embed, options, allowedMentions, components, stickers, embeds, flags).ConfigureAwait(false);
-        async Task<IThreadChannel> IForumChannel.CreatePostWithFilesAsync(string title, IEnumerable<FileAttachment> attachments, ThreadArchiveDuration archiveDuration, int? slowmode, string text, Embed embed, RequestOptions options, AllowedMentions allowedMentions, MessageComponent components, ISticker[] stickers, Embed[] embeds, MessageFlags flags)
+        async Task<IThreadChannel> IForumChannel.CreatePostWithFilesAsync(string title, IEnumerable<FileAttachment> attachments, ThreadArchiveDuration archiveDuration, int? slowmode, string text, Embed embed, RequestOptions options, AllowedMentions allowedMentions, MessageComponent components, ISticker[] stickers, Embed[] embeds, MessageFlags flags, ForumTag[] tags)
             => await CreatePostWithFilesAsync(title, attachments, archiveDuration, slowmode, text, embed, options, allowedMentions, components, stickers, embeds, flags);
 
         #endregion