Add webhook message flags

src/Discord.Net.Webhook/DiscordWebhookClient.cs

@@ -87,8 +87,9 @@ namespace Discord.Webhook
         /// <summary> Sends a message to the channel for this webhook. </summary>
         /// <returns> Returns the ID of the created message. </returns>
         public Task<ulong> SendMessageAsync(string text = null, bool isTTS = false, IEnumerable<Embed> embeds = null,
-            string username = null, string avatarUrl = null, RequestOptions options = null, AllowedMentions allowedMentions = null, MessageComponent components = null)
-            => WebhookClientHelper.SendMessageAsync(this, text, isTTS, embeds, username, avatarUrl, allowedMentions, options, components);
+            string username = null, string avatarUrl = null, RequestOptions options = null, AllowedMentions allowedMentions = null,
+            MessageComponent components = null, MessageFlags flags = MessageFlags.None)
+            => WebhookClientHelper.SendMessageAsync(this, text, isTTS, embeds, username, avatarUrl, allowedMentions, options, components, flags);
 
         /// <summary>
         ///     Modifies a message posted using this webhook.
@@ -124,33 +125,35 @@ namespace Discord.Webhook
         public Task<ulong> SendFileAsync(string filePath, string text, bool isTTS = false,
             IEnumerable<Embed> embeds = null, string username = null, string avatarUrl = null,
             RequestOptions options = null, bool isSpoiler = false, AllowedMentions allowedMentions = null,
-            MessageComponent components = null)
+            MessageComponent components = null, MessageFlags flags = MessageFlags.None)
             => WebhookClientHelper.SendFileAsync(this, filePath, text, isTTS, embeds, username, avatarUrl,
-                allowedMentions, options, isSpoiler, components);
+                allowedMentions, options, isSpoiler, components, flags);
         /// <summary> Sends a message to the channel for this webhook with an attachment. </summary>
         /// <returns> Returns the ID of the created message. </returns>
         public Task<ulong> SendFileAsync(Stream stream, string filename, string text, bool isTTS = false,
             IEnumerable<Embed> embeds = null, string username = null, string avatarUrl = null,
             RequestOptions options = null, bool isSpoiler = false, AllowedMentions allowedMentions = null,
-            MessageComponent components = null)
+            MessageComponent components = null, MessageFlags flags = MessageFlags.None)
             => WebhookClientHelper.SendFileAsync(this, stream, filename, text, isTTS, embeds, username,
-                avatarUrl, allowedMentions, options, isSpoiler, components);
+                avatarUrl, allowedMentions, options, isSpoiler, components, flags);
 
         /// <summary> Sends a message to the channel for this webhook with an attachment. </summary>
         /// <returns> Returns the ID of the created message. </returns>
         public Task<ulong> SendFileAsync(FileAttachment attachment, string text, bool isTTS = false,
             IEnumerable<Embed> embeds = null, string username = null, string avatarUrl = null,
-            RequestOptions options = null, AllowedMentions allowedMentions = null, MessageComponent components = null)
+            RequestOptions options = null, AllowedMentions allowedMentions = null, MessageComponent components = null, 
+            MessageFlags flags = MessageFlags.None)
             => WebhookClientHelper.SendFileAsync(this, attachment, text, isTTS, embeds, username,
-                avatarUrl, allowedMentions, components, options);
+                avatarUrl, allowedMentions, components, options, flags);
 
         /// <summary> Sends a message to the channel for this webhook with an attachment. </summary>
         /// <returns> Returns the ID of the created message. </returns>
         public Task<ulong> SendFilesAsync(IEnumerable<FileAttachment> attachments, string text, bool isTTS = false,
             IEnumerable<Embed> embeds = null, string username = null, string avatarUrl = null,
-            RequestOptions options = null, AllowedMentions allowedMentions = null, MessageComponent components = null)
+            RequestOptions options = null, AllowedMentions allowedMentions = null, MessageComponent components = null, 
+            MessageFlags flags = MessageFlags.None)
             => WebhookClientHelper.SendFilesAsync(this, attachments, text, isTTS, embeds, username, avatarUrl,
-                allowedMentions, components, options);
+                allowedMentions, components, options, flags);
 
 
         /// <summary> Modifies the properties of this webhook. </summary>

src/Discord.Net.Webhook/WebhookClientHelper.cs

@@ -21,12 +21,14 @@ namespace Discord.Webhook
             return RestInternalWebhook.Create(client, model);
         }
         public static async Task<ulong> SendMessageAsync(DiscordWebhookClient client,
-            string text, bool isTTS, IEnumerable<Embed> embeds, string username, string avatarUrl, AllowedMentions allowedMentions, RequestOptions options, MessageComponent components)
+            string text, bool isTTS, IEnumerable<Embed> embeds, string username, string avatarUrl, 
+            AllowedMentions allowedMentions, RequestOptions options, MessageComponent components, MessageFlags flags)
         {
             var args = new CreateWebhookMessageParams
             {
                 Content = text,
-                IsTTS = isTTS
+                IsTTS = isTTS,
+                Flags = flags
             };
 
             if (embeds != null)
@@ -40,6 +42,9 @@ namespace Discord.Webhook
             if (components != null)
                 args.Components = components?.Components.Select(x => new API.ActionRowComponent(x)).ToArray();
 
+            if (flags is not MessageFlags.None and not MessageFlags.SuppressEmbeds)
+                throw new ArgumentException("The only valid MessageFlags are SuppressEmbeds and none.", nameof(flags));
+            
             var model = await client.ApiClient.CreateWebhookMessageAsync(client.Webhook.Id, args, options: options).ConfigureAwait(false);
             return model.Id;
         }
@@ -97,22 +102,27 @@ namespace Discord.Webhook
             await client.ApiClient.DeleteWebhookMessageAsync(client.Webhook.Id, messageId, options).ConfigureAwait(false);
         }
         public static async Task<ulong> SendFileAsync(DiscordWebhookClient client, string filePath, string text, bool isTTS,
-            IEnumerable<Embed> embeds, string username, string avatarUrl, AllowedMentions allowedMentions, RequestOptions options, bool isSpoiler, MessageComponent components)
+            IEnumerable<Embed> embeds, string username, string avatarUrl, AllowedMentions allowedMentions, RequestOptions options,
+            bool isSpoiler, MessageComponent components, MessageFlags flags = MessageFlags.None)
         {
             string filename = Path.GetFileName(filePath);
             using (var file = File.OpenRead(filePath))
-                return await SendFileAsync(client, file, filename, text, isTTS, embeds, username, avatarUrl, allowedMentions, options, isSpoiler, components).ConfigureAwait(false);
+                return await SendFileAsync(client, file, filename, text, isTTS, embeds, username, avatarUrl, allowedMentions, options, isSpoiler, components, flags).ConfigureAwait(false);
         }
         public static Task<ulong> SendFileAsync(DiscordWebhookClient client, Stream stream, string filename, string text, bool isTTS,
             IEnumerable<Embed> embeds, string username, string avatarUrl, AllowedMentions allowedMentions, RequestOptions options, bool isSpoiler,
-            MessageComponent components)
-            => SendFileAsync(client, new FileAttachment(stream, filename, isSpoiler: isSpoiler), text, isTTS, embeds, username, avatarUrl, allowedMentions, components, options);
+            MessageComponent components, MessageFlags flags)
+            => SendFileAsync(client, new FileAttachment(stream, filename, isSpoiler: isSpoiler), text, isTTS, embeds, username, avatarUrl, allowedMentions, components, options, flags);
 
-        public static Task<ulong> SendFileAsync(DiscordWebhookClient client, FileAttachment attachment, string text, bool isTTS, IEnumerable<Embed> embeds, string username, string avatarUrl, AllowedMentions allowedMentions, MessageComponent components, RequestOptions options)
-            => SendFilesAsync(client, new FileAttachment[] { attachment }, text, isTTS, embeds, username, avatarUrl, allowedMentions, components, options);
+        public static Task<ulong> SendFileAsync(DiscordWebhookClient client, FileAttachment attachment, string text, bool isTTS, 
+            IEnumerable<Embed> embeds, string username, string avatarUrl, AllowedMentions allowedMentions, 
+            MessageComponent components, RequestOptions options, MessageFlags flags)
+            => SendFilesAsync(client, new FileAttachment[] { attachment }, text, isTTS, embeds, username, avatarUrl, allowedMentions, components, options, flags);
 
         public static async Task<ulong> SendFilesAsync(DiscordWebhookClient client,
-            IEnumerable<FileAttachment> attachments, string text, bool isTTS, IEnumerable<Embed> embeds, string username, string avatarUrl, AllowedMentions allowedMentions, MessageComponent components, RequestOptions options)
+            IEnumerable<FileAttachment> attachments, string text, bool isTTS, IEnumerable<Embed> embeds, string username, 
+            string avatarUrl, AllowedMentions allowedMentions, MessageComponent components, RequestOptions options,
+            MessageFlags flags)
         {
             embeds ??= Array.Empty<Embed>();
            
@@ -141,7 +151,19 @@ namespace Discord.Webhook
                 }
             }
 
-            var args = new UploadWebhookFileParams(attachments.ToArray()) {AvatarUrl = avatarUrl, Username = username, Content = text, IsTTS = isTTS, Embeds = embeds.Any() ? embeds.Select(x => x.ToModel()).ToArray() : Optional<API.Embed[]>.Unspecified, AllowedMentions = allowedMentions?.ToModel() ?? Optional<API.AllowedMentions>.Unspecified, MessageComponents = components?.Components.Select(x => new API.ActionRowComponent(x)).ToArray() ?? Optional<API.ActionRowComponent[]>.Unspecified };
+            if (flags is not MessageFlags.None and not MessageFlags.SuppressEmbeds)
+                throw new ArgumentException("The only valid MessageFlags are SuppressEmbeds and none.", nameof(flags));
+
+            var args = new UploadWebhookFileParams(attachments.ToArray()) 
+            {
+                AvatarUrl = avatarUrl, 
+                Username = username, Content = text, 
+                IsTTS = isTTS, 
+                Embeds = embeds.Any() ? embeds.Select(x => x.ToModel()).ToArray() : Optional<API.Embed[]>.Unspecified, 
+                AllowedMentions = allowedMentions?.ToModel() ?? Optional<API.AllowedMentions>.Unspecified, 
+                MessageComponents = components?.Components.Select(x => new API.ActionRowComponent(x)).ToArray() ?? Optional<API.ActionRowComponent[]>.Unspecified,
+                Flags = flags
+            };
             var msg = await client.ApiClient.UploadWebhookFileAsync(client.Webhook.Id, args, options).ConfigureAwait(false);
             return msg.Id;
         }