feat: support for message create nonce and enforce_nonce

DisCatSharp/Entities/Message/DiscordMessage.cs

@@ -286,6 +286,12 @@ public IReadOnlyList<DiscordReaction> Reactions
 	[JsonProperty("nonce", NullValueHandling = NullValueHandling.Ignore)]
 	public string Nonce { get; internal set; }
 
+	/// <summary>
+	/// Gets whether the <see cref="Nonce"/> is enforced to be validated.
+	/// </summary>
+	[JsonProperty("enforce_nonce", NullValueHandling = NullValueHandling.Ignore)]
+	public bool EnforceNonce { get; internal set; }
+
 	/// <summary>
 	/// Gets whether the message is pinned.
 	/// </summary>

DisCatSharp/Entities/Message/DiscordMessageBuilder.cs

@@ -111,6 +111,38 @@ public DiscordEmbed Embed
 	/// </summary>
 	public bool FailOnInvalidReply { get; set; }
 
+	/// <summary>
+	/// Gets the nonce for the message.
+	/// </summary>
+	public string? Nonce { get; internal set; }
+
+	/// <summary>
+	/// Gets whether to enforce the nonce.
+	/// </summary>
+	public bool EnforceNonce { get; internal set; }
+
+	/// <summary>
+	/// Sets the nonce for the message.
+	/// </summary>
+	/// <param name="nonce">The nonce for the message. Max 25 chars.</param>
+	/// <returns>The current builder to be chained.</returns>
+	public DiscordMessageBuilder WithNonce(string nonce)
+	{
+		this.Nonce = nonce;
+		return this;
+	}
+
+	/// <summary>
+	/// Whether to enforce the nonce.
+	/// </summary>
+	/// <param name="enforceNonce">Controls the nonce enforcement.</param>
+	/// <returns>The current builder to be chained.</returns>
+	public DiscordMessageBuilder WithEnforceNonce(bool enforceNonce)
+	{
+		this.EnforceNonce = enforceNonce;
+		return this;
+	}
+
 	/// <summary>
 	/// Sets the Content of the Message.
 	/// </summary>
@@ -430,6 +462,8 @@ public void Clear()
 		this.Sticker = null;
 		this.AttachmentsInternal.Clear();
 		this.KeepAttachmentsInternal = false;
+		this.Nonce = null;
+		this.EnforceNonce = false;
 	}
 
 	/// <summary>
@@ -451,6 +485,9 @@ internal void Validate(bool isModify = false)
 
 			if (this.Components.Any(c => c.Components.Count > 5))
 				throw new InvalidOperationException("Action rows can only have 5 components");
+
+			if (this.EnforceNonce && string.IsNullOrEmpty(this.Nonce))
+				throw new InvalidOperationException("Nonce enforcement is enabled, but no nonce is set.");
 		}
 	}
 }

DisCatSharp/Net/Abstractions/Rest/RestChannelPayloads.cs

@@ -311,6 +311,18 @@ internal sealed class RestChannelMessageCreatePayload : RestChannelMessageEditPa
 	/// </summary>
 	[JsonProperty("message_reference", NullValueHandling = NullValueHandling.Ignore)]
 	public InternalDiscordMessageReference? MessageReference { get; set; }
+
+	/// <summary>
+	/// Gets or sets the nonce sent with the message.
+	/// </summary>
+	[JsonProperty("nonce", NullValueHandling = NullValueHandling.Ignore)]
+	public string Nonce { get; internal set; }
+
+	/// <summary>
+	/// Gets or sets whether to enforce the <see cref="Nonce"/> to be validated.
+	/// </summary>
+	[JsonProperty("enforce_nonce", NullValueHandling = NullValueHandling.Ignore)]
+	public bool EnforceNonce { get; internal set; }
 }
 
 /// <summary>

DisCatSharp/Net/Rest/DiscordApiClient.cs

@@ -2739,7 +2739,9 @@ internal async Task<DiscordMessage> CreateMessageAsync(ulong channelId, DiscordM
 			IsTts = builder.IsTts,
 			HasEmbed = builder.Embeds != null,
 			Embeds = builder.Embeds,
-			Components = builder.Components
+			Components = builder.Components,
+			Nonce = builder.Nonce,
+			EnforceNonce = builder.EnforceNonce
 		};
 
 		if (builder.ReplyId != null)