add `nsfw` to data model & internal methods; add missing property

src/Discord.Net.Core/Entities/Interactions/ApplicationCommandProperties.cs

@@ -83,6 +83,11 @@ namespace Discord
         /// </summary>
         public Optional<bool> IsDMEnabled { get; set; }
 
+        /// <summary>
+        ///     Gets or sets whether or not this command is age restricted.
+        /// </summary>
+        public Optional<bool> IsNsfw { get; set; }
+
         /// <summary>
         ///     Gets or sets the default permissions required by a user to execute this application command.
         /// </summary>

src/Discord.Net.Core/Entities/Interactions/IApplicationCommand.cs

@@ -42,6 +42,11 @@ namespace Discord
         /// </remarks>
         bool IsEnabledInDm { get; }
 
+        /// <summary>
+        ///     Indicates whether the command is age restricted.
+        /// </summary>
+        bool IsNsfw { get; }
+
         /// <summary>
         ///     Set of default <see cref="GuildPermission"/> required to invoke the command.
         /// </summary>

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

@@ -44,5 +44,8 @@ namespace Discord.API
 
         [JsonProperty("default_member_permissions")]
         public Optional<GuildPermission?> DefaultMemberPermission { get; set; }
+
+        [JsonProperty("nsfw")]
+        public Optional<bool?> Nsfw { get; set; }
     }
 }

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

@@ -35,9 +35,12 @@ namespace Discord.API.Rest
         [JsonProperty("default_member_permissions")]
         public Optional<GuildPermission?> DefaultMemberPermission { get; set; }
 
+        [JsonProperty("nsfw")]
+        public Optional<bool> Nsfw { get; set; }
+
         public CreateApplicationCommandParams() { }
         public CreateApplicationCommandParams(string name, string description, ApplicationCommandType type, ApplicationCommandOption[] options = null,
-            IDictionary<string, string> nameLocalizations = null, IDictionary<string, string> descriptionLocalizations = null)
+            IDictionary<string, string> nameLocalizations = null, IDictionary<string, string> descriptionLocalizations = null, bool nsfw = false)
         {
             Name = name;
             Description = description;
@@ -45,6 +48,7 @@ namespace Discord.API.Rest
             Type = type;
             NameLocalizations = nameLocalizations?.ToDictionary(x => x.Key, x => x.Value) ?? Optional<Dictionary<string, string>>.Unspecified;
             DescriptionLocalizations = descriptionLocalizations?.ToDictionary(x => x.Key, x => x.Value) ?? Optional<Dictionary<string, string>>.Unspecified;
+            Nsfw = nsfw;
         }
     }
 }

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

@@ -17,6 +17,12 @@ namespace Discord.API.Rest
         [JsonProperty("default_permission")]
         public Optional<bool> DefaultPermission { get; set; }
 
+        [JsonProperty("nsfw")]
+        public Optional<bool> Nsfw { get; set; }
+
+        [JsonProperty("default_member_permissions")]
+        public Optional<GuildPermission?> DefaultMemberPermission { get; set; }
+
         [JsonProperty("name_localizations")]
         public Optional<Dictionary<string, string>> NameLocalizations { get; set; }
 

src/Discord.Net.Rest/Entities/Interactions/InteractionHelper.cs

@@ -107,7 +107,8 @@ namespace Discord.Rest
 
                 // TODO: better conversion to nullable optionals
                 DefaultMemberPermission = arg.DefaultMemberPermissions.ToNullable(),
-                DmPermission = arg.IsDMEnabled.ToNullable() 
+                DmPermission = arg.IsDMEnabled.ToNullable(),
+                Nsfw = arg.IsNsfw.GetValueOrDefault(false),
             };
 
             if (arg is SlashCommandProperties slashProps)
@@ -147,8 +148,9 @@ namespace Discord.Rest
 
                     // TODO: better conversion to nullable optionals
                     DefaultMemberPermission = arg.DefaultMemberPermissions.ToNullable(),
-                    DmPermission = arg.IsDMEnabled.ToNullable()
-                };
+                    DmPermission = arg.IsDMEnabled.ToNullable(),
+                    Nsfw = arg.IsNsfw.GetValueOrDefault(false)
+                    };
 
                 if (arg is SlashCommandProperties slashProps)
                 {
@@ -190,7 +192,8 @@ namespace Discord.Rest
 
                     // TODO: better conversion to nullable optionals
                     DefaultMemberPermission = arg.DefaultMemberPermissions.ToNullable(),
-                    DmPermission = arg.IsDMEnabled.ToNullable()
+                    DmPermission = arg.IsDMEnabled.ToNullable(),
+                    Nsfw = arg.IsNsfw.GetValueOrDefault(false)
                 };
 
                 if (arg is SlashCommandProperties slashProps)
@@ -252,7 +255,9 @@ namespace Discord.Rest
                         ? args.IsDefaultPermission.Value
                         : Optional<bool>.Unspecified,
                 NameLocalizations = args.NameLocalizations?.ToDictionary(),
-                DescriptionLocalizations = args.DescriptionLocalizations?.ToDictionary()
+                DescriptionLocalizations = args.DescriptionLocalizations?.ToDictionary(),
+                Nsfw = args.IsNsfw.GetValueOrDefault(false),
+                DefaultMemberPermission = args.DefaultMemberPermissions.ToNullable()
             };
 
             if (args is SlashCommandProperties slashProps)
@@ -312,7 +317,8 @@ namespace Discord.Rest
 
                 // TODO: better conversion to nullable optionals
                 DefaultMemberPermission = arg.DefaultMemberPermissions.ToNullable(),
-                DmPermission = arg.IsDMEnabled.ToNullable()
+                DmPermission = arg.IsDMEnabled.ToNullable(),
+                Nsfw = arg.IsNsfw.GetValueOrDefault(false)
             };
 
             if (arg is SlashCommandProperties slashProps)
@@ -347,7 +353,9 @@ namespace Discord.Rest
                         ? arg.IsDefaultPermission.Value
                         : Optional<bool>.Unspecified,
                 NameLocalizations = arg.NameLocalizations?.ToDictionary(),
-                DescriptionLocalizations = arg.DescriptionLocalizations?.ToDictionary()
+                DescriptionLocalizations = arg.DescriptionLocalizations?.ToDictionary(),
+                Nsfw = arg.IsNsfw.GetValueOrDefault(false),
+                DefaultMemberPermission = arg.DefaultMemberPermissions.ToNullable()
             };
 
             if (arg is SlashCommandProperties slashProps)

src/Discord.Net.Rest/Entities/Interactions/RestApplicationCommand.cs

@@ -30,6 +30,9 @@ namespace Discord.Rest
         /// <inheritdoc/>
         public bool IsEnabledInDm { get; private set; }
 
+        /// <inheritdoc/>
+        public bool IsNsfw { get; private set; }
+
         /// <inheritdoc/>
         public GuildPermissions DefaultMemberPermissions { get; private set; }
 
@@ -101,6 +104,7 @@ namespace Discord.Rest
             
             IsEnabledInDm = model.DmPermission.GetValueOrDefault(true).GetValueOrDefault(true);
             DefaultMemberPermissions = new GuildPermissions((ulong)model.DefaultMemberPermission.GetValueOrDefault(0).GetValueOrDefault(0));
+            IsNsfw = model.Nsfw.GetValueOrDefault(false).GetValueOrDefault(false);
         }
 
         /// <inheritdoc/>

src/Discord.Net.WebSocket/Entities/Interaction/SocketBaseCommand/SocketApplicationCommand.cs

@@ -39,6 +39,9 @@ namespace Discord.WebSocket
         /// <inheritdoc/>
         public bool IsEnabledInDm { get; private set; }
 
+        /// <inheritdoc/>
+        public bool IsNsfw { get; private set; }
+
         /// <inheritdoc/>
         public GuildPermissions DefaultMemberPermissions { get; private set; }
 
@@ -130,6 +133,7 @@ namespace Discord.WebSocket
 
             IsEnabledInDm = model.DmPermission.GetValueOrDefault(true).GetValueOrDefault(true);
             DefaultMemberPermissions = new GuildPermissions((ulong)model.DefaultMemberPermission.GetValueOrDefault(0).GetValueOrDefault(0));
+            IsNsfw = model.Nsfw.GetValueOrDefault(false).GetValueOrDefault(false);
         }
 
         /// <inheritdoc/>