Implement support for sending message attachments that are spoilers

src/Discord.Net.Commands/Extensions/MessageExtensions.cs

@@ -60,5 +60,10 @@ namespace Discord.Commands
             }
             return false;
         }
+        /// <summary>
+        ///     Gets wheter the message's attachments are spoilers or not.
+        /// </summary>
+        public static bool IsSpoiler(this IAttachment attachment)
+            => attachment.Filename.StartsWith("SPOILER_");
     }
 }

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

@@ -65,7 +65,7 @@ namespace Discord
         ///     A task that represents an asynchronous send operation for delivering the message. The task result
         ///     contains the sent message.
         /// </returns>
-        Task<IUserMessage> SendFileAsync(string filePath, string text = null, bool isTTS = false, Embed embed = null, RequestOptions options = null);
+        Task<IUserMessage> SendFileAsync(string filePath, string text = null, bool isTTS = false, Embed embed = null, RequestOptions options = null, bool isSpoiler = false);
         /// <summary>
         ///     Sends a file to this message channel with an optional caption.
         /// </summary>
@@ -95,7 +95,7 @@ namespace Discord
         ///     A task that represents an asynchronous send operation for delivering the message. The task result
         ///     contains the sent message.
         /// </returns>
-        Task<IUserMessage> SendFileAsync(Stream stream, string filename, string text = null, bool isTTS = false, Embed embed = null, RequestOptions options = null);
+        Task<IUserMessage> SendFileAsync(Stream stream, string filename, string text = null, bool isTTS = false, Embed embed = null, RequestOptions options = null, bool isSpoiler = false);
 
         /// <summary>
         ///     Gets a message from this message channel.

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

@@ -19,6 +19,7 @@ namespace Discord.API.Rest
         public Optional<string> Nonce { get; set; }
         public Optional<bool> IsTTS { get; set; }
         public Optional<Embed> Embed { get; set; }
+        public bool HasSpoiler { get; set; } = false;
 
         public UploadFileParams(Stream file)
         {
@@ -28,7 +29,10 @@ namespace Discord.API.Rest
         public IReadOnlyDictionary<string, object> ToDictionary()
         {
             var d = new Dictionary<string, object>();
-            d["file"] = new MultipartFile(File, Filename.GetValueOrDefault("unknown.dat"));
+            var filename = Filename.GetValueOrDefault("unknown.dat");
+            if (HasSpoiler && !filename.StartsWith("SPOILER_"))
+                filename = filename.Insert(0, "SPOILER_");
+            d["file"] = new MultipartFile(File, filename);
 
             var payload = new Dictionary<string, object>();
             if (Content.IsSpecified)
@@ -39,6 +43,8 @@ namespace Discord.API.Rest
                 payload["nonce"] = Nonce.Value;
             if (Embed.IsSpecified)
                 payload["embed"] = Embed.Value;
+            if (HasSpoiler)
+                payload["hasSpoiler"] = HasSpoiler.ToString();
 
             var json = new StringBuilder();
             using (var text = new StringWriter(json))

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

@@ -199,18 +199,18 @@ namespace Discord.Rest
         /// <exception cref="IOException">An I/O error occurred while opening the file.</exception>
         /// <exception cref="ArgumentOutOfRangeException">Message content is too long, length must be less or equal to <see cref="DiscordConfig.MaxMessageSize"/>.</exception>
         public static async Task<RestUserMessage> SendFileAsync(IMessageChannel channel, BaseDiscordClient client,
-            string filePath, string text, bool isTTS, Embed embed, RequestOptions options)
+            string filePath, string text, bool isTTS, Embed embed, RequestOptions options, bool isSpoiler)
         {
             string filename = Path.GetFileName(filePath);
             using (var file = File.OpenRead(filePath))
-                return await SendFileAsync(channel, client, file, filename, text, isTTS, embed, options).ConfigureAwait(false);
+                return await SendFileAsync(channel, client, file, filename, text, isTTS, embed, options, isSpoiler).ConfigureAwait(false);
         }
 
         /// <exception cref="ArgumentOutOfRangeException">Message content is too long, length must be less or equal to <see cref="DiscordConfig.MaxMessageSize"/>.</exception>
         public static async Task<RestUserMessage> SendFileAsync(IMessageChannel channel, BaseDiscordClient client,
-            Stream stream, string filename, string text, bool isTTS, Embed embed, RequestOptions options)
+            Stream stream, string filename, string text, bool isTTS, Embed embed, RequestOptions options, bool isSpoiler)
         {
-            var args = new UploadFileParams(stream) { Filename = filename, Content = text, IsTTS = isTTS, Embed = embed != null ? embed.ToModel() : Optional<API.Embed>.Unspecified };
+            var args = new UploadFileParams(stream) { Filename = filename, Content = text, IsTTS = isTTS, Embed = embed != null ? embed.ToModel() : Optional<API.Embed>.Unspecified, HasSpoiler = isSpoiler };
             var model = await client.ApiClient.UploadFileAsync(channel.Id, args, options).ConfigureAwait(false);
             return RestUserMessage.Create(client, channel, client.CurrentUser, model);
         }

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

@@ -42,12 +42,12 @@ namespace Discord.Rest
         ///     A task that represents an asynchronous send operation for delivering the message. The task result
         ///     contains the sent message.
         /// </returns>
-        new Task<RestUserMessage> SendFileAsync(string filePath, string text = null, bool isTTS = false, Embed embed = null, RequestOptions options = null);
+        new Task<RestUserMessage> SendFileAsync(string filePath, string text = null, bool isTTS = false, Embed embed = null, RequestOptions options = null, bool isSpoiler = false);
         /// <summary>
         ///     Sends a file to this message channel with an optional caption.
         /// </summary>
         /// <remarks>
-        ///     This method follows the same behavior as described in <see cref="IMessageChannel.SendFileAsync(Stream, string, string, bool, Embed, RequestOptions)"/>.
+        ///     This method follows the same behavior as described in <see cref="IMessageChannel.SendFileAsync(Stream, string, string, bool, Embed, RequestOptions, bool)"/>.
         ///     Please visit its documentation for more details on this method.
         /// </remarks>
         /// <param name="stream">The <see cref="Stream" /> of the file to be sent.</param>
@@ -60,7 +60,7 @@ namespace Discord.Rest
         ///     A task that represents an asynchronous send operation for delivering the message. The task result
         ///     contains the sent message.
         /// </returns>
-        new Task<RestUserMessage> SendFileAsync(Stream stream, string filename, string text = null, bool isTTS = false, Embed embed = null, RequestOptions options = null);
+        new Task<RestUserMessage> SendFileAsync(Stream stream, string filename, string text = null, bool isTTS = false, Embed embed = null, RequestOptions options = null, bool isSpoiler = false);
 
         /// <summary>
         ///     Gets a message from this message channel.

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

@@ -121,12 +121,12 @@ namespace Discord.Rest
         /// <exception cref="NotSupportedException"><paramref name="filePath" /> is in an invalid format.</exception>
         /// <exception cref="IOException">An I/O error occurred while opening the file.</exception>
         /// <exception cref="ArgumentOutOfRangeException">Message content is too long, length must be less or equal to <see cref="DiscordConfig.MaxMessageSize"/>.</exception>
-        public Task<RestUserMessage> SendFileAsync(string filePath, string text, bool isTTS = false, Embed embed = null, RequestOptions options = null)
-            => ChannelHelper.SendFileAsync(this, Discord, filePath, text, isTTS, embed, options);
+        public Task<RestUserMessage> SendFileAsync(string filePath, string text, bool isTTS = false, Embed embed = null, RequestOptions options = null, bool isSpoiler = false)
+            => ChannelHelper.SendFileAsync(this, Discord, filePath, text, isTTS, embed, options, isSpoiler);
         /// <inheritdoc />
         /// <exception cref="ArgumentOutOfRangeException">Message content is too long, length must be less or equal to <see cref="DiscordConfig.MaxMessageSize"/>.</exception>
-        public Task<RestUserMessage> SendFileAsync(Stream stream, string filename, string text, bool isTTS = false, Embed embed = null, RequestOptions options = null)
-            => ChannelHelper.SendFileAsync(this, Discord, stream, filename, text, isTTS, embed, options);
+        public Task<RestUserMessage> SendFileAsync(Stream stream, string filename, string text, bool isTTS = false, Embed embed = null, RequestOptions options = null, bool isSpoiler = false)
+            => ChannelHelper.SendFileAsync(this, Discord, stream, filename, text, isTTS, embed, options, isSpoiler);
 
         /// <inheritdoc />
         public Task DeleteMessageAsync(ulong messageId, RequestOptions options = null)
@@ -200,11 +200,11 @@ namespace Discord.Rest
         async Task<IReadOnlyCollection<IMessage>> IMessageChannel.GetPinnedMessagesAsync(RequestOptions options)
             => await GetPinnedMessagesAsync(options).ConfigureAwait(false);
         /// <inheritdoc />
-        async Task<IUserMessage> IMessageChannel.SendFileAsync(string filePath, string text, bool isTTS, Embed embed, RequestOptions options)
-            => await SendFileAsync(filePath, text, isTTS, embed, options).ConfigureAwait(false);
+        async Task<IUserMessage> IMessageChannel.SendFileAsync(string filePath, string text, bool isTTS, Embed embed, RequestOptions options, bool isSpoiler)
+            => await SendFileAsync(filePath, text, isTTS, embed, options, isSpoiler).ConfigureAwait(false);
         /// <inheritdoc />
-        async Task<IUserMessage> IMessageChannel.SendFileAsync(Stream stream, string filename, string text, bool isTTS, Embed embed, RequestOptions options)
-            => await SendFileAsync(stream, filename, text, isTTS, embed, options).ConfigureAwait(false);
+        async Task<IUserMessage> IMessageChannel.SendFileAsync(Stream stream, string filename, string text, bool isTTS, Embed embed, RequestOptions options, bool isSpoiler)
+            => await SendFileAsync(stream, filename, text, isTTS, embed, options, isSpoiler).ConfigureAwait(false);
         /// <inheritdoc />
         async Task<IUserMessage> IMessageChannel.SendMessageAsync(string text, bool isTTS, Embed embed, RequestOptions options)
             => await SendMessageAsync(text, isTTS, embed, options).ConfigureAwait(false);

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

@@ -123,12 +123,12 @@ namespace Discord.Rest
         /// <exception cref="NotSupportedException"><paramref name="filePath" /> is in an invalid format.</exception>
         /// <exception cref="IOException">An I/O error occurred while opening the file.</exception>
         /// <exception cref="ArgumentOutOfRangeException">Message content is too long, length must be less or equal to <see cref="DiscordConfig.MaxMessageSize"/>.</exception>
-        public Task<RestUserMessage> SendFileAsync(string filePath, string text, bool isTTS = false, Embed embed = null, RequestOptions options = null)
-            => ChannelHelper.SendFileAsync(this, Discord, filePath, text, isTTS, embed, options);
+        public Task<RestUserMessage> SendFileAsync(string filePath, string text, bool isTTS = false, Embed embed = null, RequestOptions options = null, bool isSpoiler = false)
+            => ChannelHelper.SendFileAsync(this, Discord, filePath, text, isTTS, embed, options, isSpoiler);
         /// <inheritdoc />
         /// <exception cref="ArgumentOutOfRangeException">Message content is too long, length must be less or equal to <see cref="DiscordConfig.MaxMessageSize"/>.</exception>
-        public Task<RestUserMessage> SendFileAsync(Stream stream, string filename, string text, bool isTTS = false, Embed embed = null, RequestOptions options = null)
-            => ChannelHelper.SendFileAsync(this, Discord, stream, filename, text, isTTS, embed, options);
+        public Task<RestUserMessage> SendFileAsync(Stream stream, string filename, string text, bool isTTS = false, Embed embed = null, RequestOptions options = null, bool isSpoiler = false)
+            => ChannelHelper.SendFileAsync(this, Discord, stream, filename, text, isTTS, embed, options, isSpoiler);
 
         /// <inheritdoc />
         public Task TriggerTypingAsync(RequestOptions options = null)
@@ -178,11 +178,11 @@ namespace Discord.Rest
         async Task<IReadOnlyCollection<IMessage>> IMessageChannel.GetPinnedMessagesAsync(RequestOptions options)
             => await GetPinnedMessagesAsync(options).ConfigureAwait(false);
 
-        async Task<IUserMessage> IMessageChannel.SendFileAsync(string filePath, string text, bool isTTS, Embed embed, RequestOptions options)
-            => await SendFileAsync(filePath, text, isTTS, embed, options).ConfigureAwait(false);
+        async Task<IUserMessage> IMessageChannel.SendFileAsync(string filePath, string text, bool isTTS, Embed embed, RequestOptions options, bool isSpoiler)
+            => await SendFileAsync(filePath, text, isTTS, embed, options, isSpoiler).ConfigureAwait(false);
 
-        async Task<IUserMessage> IMessageChannel.SendFileAsync(Stream stream, string filename, string text, bool isTTS, Embed embed, RequestOptions options)
-            => await SendFileAsync(stream, filename, text, isTTS, embed, options).ConfigureAwait(false);
+        async Task<IUserMessage> IMessageChannel.SendFileAsync(Stream stream, string filename, string text, bool isTTS, Embed embed, RequestOptions options, bool isSpoiler)
+            => await SendFileAsync(stream, filename, text, isTTS, embed, options, isSpoiler).ConfigureAwait(false);
         async Task<IUserMessage> IMessageChannel.SendMessageAsync(string text, bool isTTS, Embed embed, RequestOptions options)
             => await SendMessageAsync(text, isTTS, embed, options).ConfigureAwait(false);
 

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

@@ -129,13 +129,13 @@ namespace Discord.Rest
         /// <exception cref="NotSupportedException"><paramref name="filePath" /> is in an invalid format.</exception>
         /// <exception cref="IOException">An I/O error occurred while opening the file.</exception>
         /// <exception cref="ArgumentOutOfRangeException">Message content is too long, length must be less or equal to <see cref="DiscordConfig.MaxMessageSize"/>.</exception>
-        public Task<RestUserMessage> SendFileAsync(string filePath, string text, bool isTTS = false, Embed embed = null, RequestOptions options = null)
-            => ChannelHelper.SendFileAsync(this, Discord, filePath, text, isTTS, embed, options);
+        public Task<RestUserMessage> SendFileAsync(string filePath, string text, bool isTTS = false, Embed embed = null, RequestOptions options = null, bool isSpoiler = false)
+            => ChannelHelper.SendFileAsync(this, Discord, filePath, text, isTTS, embed, options, isSpoiler);
 
         /// <inheritdoc />
         /// <exception cref="ArgumentOutOfRangeException">Message content is too long, length must be less or equal to <see cref="DiscordConfig.MaxMessageSize"/>.</exception>
-        public Task<RestUserMessage> SendFileAsync(Stream stream, string filename, string text, bool isTTS = false, Embed embed = null, RequestOptions options = null)
-            => ChannelHelper.SendFileAsync(this, Discord, stream, filename, text, isTTS, embed, options);
+        public Task<RestUserMessage> SendFileAsync(Stream stream, string filename, string text, bool isTTS = false, Embed embed = null, RequestOptions options = null, bool isSpoiler = false)
+            => ChannelHelper.SendFileAsync(this, Discord, stream, filename, text, isTTS, embed, options, isSpoiler);
 
         /// <inheritdoc />
         public Task DeleteMessageAsync(ulong messageId, RequestOptions options = null)
@@ -266,12 +266,12 @@ namespace Discord.Rest
             => await GetPinnedMessagesAsync(options).ConfigureAwait(false);
 
         /// <inheritdoc />
-        async Task<IUserMessage> IMessageChannel.SendFileAsync(string filePath, string text, bool isTTS, Embed embed, RequestOptions options)
-            => await SendFileAsync(filePath, text, isTTS, embed, options).ConfigureAwait(false);
+        async Task<IUserMessage> IMessageChannel.SendFileAsync(string filePath, string text, bool isTTS, Embed embed, RequestOptions options, bool isSpoiler)
+            => await SendFileAsync(filePath, text, isTTS, embed, options, isSpoiler).ConfigureAwait(false);
 
         /// <inheritdoc />
-        async Task<IUserMessage> IMessageChannel.SendFileAsync(Stream stream, string filename, string text, bool isTTS, Embed embed, RequestOptions options)
-            => await SendFileAsync(stream, filename, text, isTTS, embed, options).ConfigureAwait(false);
+        async Task<IUserMessage> IMessageChannel.SendFileAsync(Stream stream, string filename, string text, bool isTTS, Embed embed, RequestOptions options, bool isSpoiler)
+            => await SendFileAsync(stream, filename, text, isTTS, embed, options, isSpoiler).ConfigureAwait(false);
         /// <inheritdoc />
         async Task<IUserMessage> IMessageChannel.SendMessageAsync(string text, bool isTTS, Embed embed, RequestOptions options)
             => await SendMessageAsync(text, isTTS, embed, options).ConfigureAwait(false);

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

@@ -50,7 +50,7 @@ namespace Discord.WebSocket
         ///     A task that represents an asynchronous send operation for delivering the message. The task result
         ///     contains the sent message.
         /// </returns>
-        new Task<RestUserMessage> SendFileAsync(string filePath, string text = null, bool isTTS = false, Embed embed = null, RequestOptions options = null);
+        new Task<RestUserMessage> SendFileAsync(string filePath, string text = null, bool isTTS = false, Embed embed = null, RequestOptions options = null, bool isSpoiler = false);
         /// <summary>
         ///     Sends a file to this message channel with an optional caption.
         /// </summary>
@@ -68,7 +68,7 @@ namespace Discord.WebSocket
         ///     A task that represents an asynchronous send operation for delivering the message. The task result
         ///     contains the sent message.
         /// </returns>
-        new Task<RestUserMessage> SendFileAsync(Stream stream, string filename, string text = null, bool isTTS = false, Embed embed = null, RequestOptions options = null);
+        new Task<RestUserMessage> SendFileAsync(Stream stream, string filename, string text = null, bool isTTS = false, Embed embed = null, RequestOptions options = null, bool isSpoiler = false);
 
         /// <summary>
         ///     Gets a cached message from this channel.

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

@@ -139,12 +139,12 @@ namespace Discord.WebSocket
             => ChannelHelper.SendMessageAsync(this, Discord, text, isTTS, embed, options);
 
         /// <inheritdoc />
-        public Task<RestUserMessage> SendFileAsync(string filePath, string text, bool isTTS = false, Embed embed = null, RequestOptions options = null)
-            => ChannelHelper.SendFileAsync(this, Discord, filePath, text, isTTS, embed, options);
+        public Task<RestUserMessage> SendFileAsync(string filePath, string text, bool isTTS = false, Embed embed = null, RequestOptions options = null, bool isSpoiler = false)
+            => ChannelHelper.SendFileAsync(this, Discord, filePath, text, isTTS, embed, options, isSpoiler);
         /// <inheritdoc />
         /// <exception cref="ArgumentOutOfRangeException">Message content is too long, length must be less or equal to <see cref="DiscordConfig.MaxMessageSize"/>.</exception>
-        public Task<RestUserMessage> SendFileAsync(Stream stream, string filename, string text, bool isTTS = false, Embed embed = null, RequestOptions options = null)
-            => ChannelHelper.SendFileAsync(this, Discord, stream, filename, text, isTTS, embed, options);
+        public Task<RestUserMessage> SendFileAsync(Stream stream, string filename, string text, bool isTTS = false, Embed embed = null, RequestOptions options = null, bool isSpoiler = false)
+            => ChannelHelper.SendFileAsync(this, Discord, stream, filename, text, isTTS, embed, options, isSpoiler);
         /// <inheritdoc />
         public Task DeleteMessageAsync(ulong messageId, RequestOptions options = null)
             => ChannelHelper.DeleteMessageAsync(this, messageId, Discord, options);
@@ -229,11 +229,11 @@ namespace Discord.WebSocket
         async Task<IReadOnlyCollection<IMessage>> IMessageChannel.GetPinnedMessagesAsync(RequestOptions options)
             => await GetPinnedMessagesAsync(options).ConfigureAwait(false);
         /// <inheritdoc />
-        async Task<IUserMessage> IMessageChannel.SendFileAsync(string filePath, string text, bool isTTS, Embed embed, RequestOptions options)
-            => await SendFileAsync(filePath, text, isTTS, embed, options).ConfigureAwait(false);
+        async Task<IUserMessage> IMessageChannel.SendFileAsync(string filePath, string text, bool isTTS, Embed embed, RequestOptions options, bool isSpoiler)
+            => await SendFileAsync(filePath, text, isTTS, embed, options, isSpoiler).ConfigureAwait(false);
         /// <inheritdoc />
-        async Task<IUserMessage> IMessageChannel.SendFileAsync(Stream stream, string filename, string text, bool isTTS, Embed embed, RequestOptions options)
-            => await SendFileAsync(stream, filename, text, isTTS, embed, options).ConfigureAwait(false);
+        async Task<IUserMessage> IMessageChannel.SendFileAsync(Stream stream, string filename, string text, bool isTTS, Embed embed, RequestOptions options, bool isSpoiler)
+            => await SendFileAsync(stream, filename, text, isTTS, embed, options, isSpoiler).ConfigureAwait(false);
         /// <inheritdoc />
         async Task<IUserMessage> IMessageChannel.SendMessageAsync(string text, bool isTTS, Embed embed, RequestOptions options)
             => await SendMessageAsync(text, isTTS, embed, options).ConfigureAwait(false);

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

@@ -167,11 +167,11 @@ namespace Discord.WebSocket
             => ChannelHelper.SendMessageAsync(this, Discord, text, isTTS, embed, options);
 
         /// <inheritdoc />
-        public Task<RestUserMessage> SendFileAsync(string filePath, string text, bool isTTS = false, Embed embed = null, RequestOptions options = null)
-            => ChannelHelper.SendFileAsync(this, Discord, filePath, text, isTTS, embed, options);
+        public Task<RestUserMessage> SendFileAsync(string filePath, string text, bool isTTS = false, Embed embed = null, RequestOptions options = null, bool isSpoiler = false)
+            => ChannelHelper.SendFileAsync(this, Discord, filePath, text, isTTS, embed, options, isSpoiler);
         /// <inheritdoc />
-        public Task<RestUserMessage> SendFileAsync(Stream stream, string filename, string text, bool isTTS = false, Embed embed = null, RequestOptions options = null)
-            => ChannelHelper.SendFileAsync(this, Discord, stream, filename, text, isTTS, embed, options);
+        public Task<RestUserMessage> SendFileAsync(Stream stream, string filename, string text, bool isTTS = false, Embed embed = null, RequestOptions options = null, bool isSpoiler = false)
+            => ChannelHelper.SendFileAsync(this, Discord, stream, filename, text, isTTS, embed, options, isSpoiler);
 
         /// <inheritdoc />
         public Task DeleteMessageAsync(ulong messageId, RequestOptions options = null)
@@ -293,11 +293,11 @@ namespace Discord.WebSocket
             => await GetPinnedMessagesAsync(options).ConfigureAwait(false);
 
         /// <inheritdoc />
-        async Task<IUserMessage> IMessageChannel.SendFileAsync(string filePath, string text, bool isTTS, Embed embed, RequestOptions options)
-            => await SendFileAsync(filePath, text, isTTS, embed, options).ConfigureAwait(false);
+        async Task<IUserMessage> IMessageChannel.SendFileAsync(string filePath, string text, bool isTTS, Embed embed, RequestOptions options, bool isSpoiler)
+            => await SendFileAsync(filePath, text, isTTS, embed, options, isSpoiler).ConfigureAwait(false);
         /// <inheritdoc />
-        async Task<IUserMessage> IMessageChannel.SendFileAsync(Stream stream, string filename, string text, bool isTTS, Embed embed, RequestOptions options)
-            => await SendFileAsync(stream, filename, text, isTTS, embed, options).ConfigureAwait(false);
+        async Task<IUserMessage> IMessageChannel.SendFileAsync(Stream stream, string filename, string text, bool isTTS, Embed embed, RequestOptions options, bool isSpoiler)
+            => await SendFileAsync(stream, filename, text, isTTS, embed, options, isSpoiler).ConfigureAwait(false);
         /// <inheritdoc />
         async Task<IUserMessage> IMessageChannel.SendMessageAsync(string text, bool isTTS, Embed embed, RequestOptions options)
             => await SendMessageAsync(text, isTTS, embed, options).ConfigureAwait(false);

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

@@ -165,13 +165,13 @@ namespace Discord.WebSocket
             => ChannelHelper.SendMessageAsync(this, Discord, text, isTTS, embed, options);
 
         /// <inheritdoc />
-        public Task<RestUserMessage> SendFileAsync(string filePath, string text, bool isTTS = false, Embed embed = null, RequestOptions options = null)
-            => ChannelHelper.SendFileAsync(this, Discord, filePath, text, isTTS, embed, options);
+        public Task<RestUserMessage> SendFileAsync(string filePath, string text, bool isTTS = false, Embed embed = null, RequestOptions options = null, bool isSpoiler = false)
+            => ChannelHelper.SendFileAsync(this, Discord, filePath, text, isTTS, embed, options, isSpoiler);
 
         /// <inheritdoc />
         /// <exception cref="ArgumentOutOfRangeException">Message content is too long, length must be less or equal to <see cref="DiscordConfig.MaxMessageSize"/>.</exception>
-        public Task<RestUserMessage> SendFileAsync(Stream stream, string filename, string text, bool isTTS = false, Embed embed = null, RequestOptions options = null)
-            => ChannelHelper.SendFileAsync(this, Discord, stream, filename, text, isTTS, embed, options);
+        public Task<RestUserMessage> SendFileAsync(Stream stream, string filename, string text, bool isTTS = false, Embed embed = null, RequestOptions options = null, bool isSpoiler = false)
+            => ChannelHelper.SendFileAsync(this, Discord, stream, filename, text, isTTS, embed, options, isSpoiler);
 
         /// <inheritdoc />
         public Task DeleteMessagesAsync(IEnumerable<IMessage> messages, RequestOptions options = null)
@@ -302,11 +302,11 @@ namespace Discord.WebSocket
             => await GetPinnedMessagesAsync(options).ConfigureAwait(false);
 
         /// <inheritdoc />
-        async Task<IUserMessage> IMessageChannel.SendFileAsync(string filePath, string text, bool isTTS, Embed embed, RequestOptions options)
-            => await SendFileAsync(filePath, text, isTTS, embed, options).ConfigureAwait(false);
+        async Task<IUserMessage> IMessageChannel.SendFileAsync(string filePath, string text, bool isTTS, Embed embed, RequestOptions options, bool isSpoiler)
+            => await SendFileAsync(filePath, text, isTTS, embed, options, isSpoiler).ConfigureAwait(false);
         /// <inheritdoc />
-        async Task<IUserMessage> IMessageChannel.SendFileAsync(Stream stream, string filename, string text, bool isTTS, Embed embed, RequestOptions options)
-            => await SendFileAsync(stream, filename, text, isTTS, embed, options).ConfigureAwait(false);
+        async Task<IUserMessage> IMessageChannel.SendFileAsync(Stream stream, string filename, string text, bool isTTS, Embed embed, RequestOptions options, bool isSpoiler)
+            => await SendFileAsync(stream, filename, text, isTTS, embed, options, isSpoiler).ConfigureAwait(false);
         /// <inheritdoc />
         async Task<IUserMessage> IMessageChannel.SendMessageAsync(string text, bool isTTS, Embed embed, RequestOptions options)
             => await SendMessageAsync(text, isTTS, embed, options).ConfigureAwait(false);