Added the option to set overwrites on channel creation

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

@@ -0,0 +1,29 @@
+using Newtonsoft.Json;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Discord.API.Rest
+{
+    class CreateChannelPermissionsParams
+    {
+        [JsonProperty("id")]
+        public ulong Id { get; set; }
+        [JsonProperty("type")]
+        public string Type { get; }
+        [JsonProperty("allow")]
+        public ulong Allow { get; }
+        [JsonProperty("deny")]
+        public ulong Deny { get; }
+
+        public CreateChannelPermissionsParams(ulong id, string type, ulong allow, ulong deny)
+        {
+            Id = id;
+            Type = type;
+            Allow = allow;
+            Deny = deny;
+        }
+    }
+}

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

@@ -1,5 +1,6 @@
 #pragma warning disable CS1591
 using Newtonsoft.Json;
+using System.Collections.Generic;
 
 namespace Discord.API.Rest
 {
@@ -14,6 +15,8 @@ namespace Discord.API.Rest
         public Optional<ulong?> CategoryId { get; set; }
         [JsonProperty("position")]
         public Optional<int> Position { get; set; }
+        [JsonProperty("permission_overwrite")]
+        public Optional<IEnumerable<CreateChannelPermissionsParams>> PermissionOverwrite {get;set;}
 
         //Text channels
         [JsonProperty("topic")]

src/Discord.Net.Rest/Entities/Guilds/GuildHelper.cs

@@ -164,54 +164,63 @@ namespace Discord.Rest
         }
         /// <exception cref="ArgumentNullException"><paramref name="name"/> is <c>null</c>.</exception>
         public static async Task<RestTextChannel> CreateTextChannelAsync(IGuild guild, BaseDiscordClient client,
-            string name, RequestOptions options, Action<TextChannelProperties> func = null)
+            string name, RequestOptions options, Action<TextChannelProperties> func = null, IEnumerable<Overwrite> overwrites = null)
         {
             if (name == null) throw new ArgumentNullException(paramName: nameof(name));
 
             var props = new TextChannelProperties();
             func?.Invoke(props);
 
+            var perms = overwrites?.Select(perm => new CreateChannelPermissionsParams(perm.TargetId, perm.TargetType == PermissionTarget.Role ? "role" : "member", perm.Permissions.AllowValue, perm.Permissions.DenyValue));
+
             var args = new CreateGuildChannelParams(name, ChannelType.Text)
             {
                 CategoryId = props.CategoryId,
                 Topic = props.Topic,
                 IsNsfw = props.IsNsfw,
-                Position = props.Position
+                Position = props.Position,
+                PermissionOverwrite = new Optional<IEnumerable<CreateChannelPermissionsParams>>(perms)
             };
             var model = await client.ApiClient.CreateGuildChannelAsync(guild.Id, args, options).ConfigureAwait(false);
             return RestTextChannel.Create(client, guild, model);
         }
         /// <exception cref="ArgumentNullException"><paramref name="name"/> is <c>null</c>.</exception>
         public static async Task<RestVoiceChannel> CreateVoiceChannelAsync(IGuild guild, BaseDiscordClient client,
-            string name, RequestOptions options, Action<VoiceChannelProperties> func = null)
+            string name, RequestOptions options, Action<VoiceChannelProperties> func = null, IEnumerable<Overwrite> overwrites = null)
         {
             if (name == null) throw new ArgumentNullException(paramName: nameof(name));
 
             var props = new VoiceChannelProperties();
             func?.Invoke(props);
 
+            var perms = overwrites?.Select(perm => new CreateChannelPermissionsParams(perm.TargetId, perm.TargetType == PermissionTarget.Role ? "role" : "member", perm.Permissions.AllowValue, perm.Permissions.DenyValue));
+
             var args = new CreateGuildChannelParams(name, ChannelType.Voice)
             {
                 CategoryId = props.CategoryId,
                 Bitrate = props.Bitrate,
                 UserLimit = props.UserLimit,
-                Position = props.Position
+                Position = props.Position,
+                PermissionOverwrite = new Optional<IEnumerable<CreateChannelPermissionsParams>>(perms)
             };
             var model = await client.ApiClient.CreateGuildChannelAsync(guild.Id, args, options).ConfigureAwait(false);
             return RestVoiceChannel.Create(client, guild, model);
         }
         /// <exception cref="ArgumentNullException"><paramref name="name"/> is <c>null</c>.</exception>
         public static async Task<RestCategoryChannel> CreateCategoryChannelAsync(IGuild guild, BaseDiscordClient client,
-            string name, RequestOptions options, Action<GuildChannelProperties> func = null)
+            string name, RequestOptions options, Action<GuildChannelProperties> func = null, IEnumerable<Overwrite> overwrites = null)
         {
             if (name == null) throw new ArgumentNullException(paramName: nameof(name));
 
             var props = new GuildChannelProperties();
             func?.Invoke(props);
 
+            var perms = overwrites?.Select(perm => new CreateChannelPermissionsParams(perm.TargetId, perm.TargetType == PermissionTarget.Role ? "role" : "member", perm.Permissions.AllowValue, perm.Permissions.DenyValue));
+
             var args = new CreateGuildChannelParams(name, ChannelType.Category)
             {
-                Position = props.Position
+                Position = props.Position,
+                PermissionOverwrite = new Optional<IEnumerable<CreateChannelPermissionsParams>>(perms)
             };
 
             var model = await client.ApiClient.CreateGuildChannelAsync(guild.Id, args, options).ConfigureAwait(false);

src/Discord.Net.Rest/Entities/Guilds/RestGuild.cs

@@ -450,8 +450,8 @@ namespace Discord.Rest
         ///     A task that represents the asynchronous creation operation. The task result contains the newly created
         ///     text channel.
         /// </returns>
-        public Task<RestTextChannel> CreateTextChannelAsync(string name, Action<TextChannelProperties> func = null, RequestOptions options = null)
-            => GuildHelper.CreateTextChannelAsync(this, Discord, name, options, func);
+        public Task<RestTextChannel> CreateTextChannelAsync(string name, Action<TextChannelProperties> func = null, RequestOptions options = null, IEnumerable<Overwrite> overwritePermissions = null)
+            => GuildHelper.CreateTextChannelAsync(this, Discord, name, options, func, overwritePermissions);
         /// <summary>
         ///     Creates a voice channel with the provided name.
         /// </summary>
@@ -462,8 +462,8 @@ namespace Discord.Rest
         /// <returns>
         ///     The created voice channel.
         /// </returns>
-        public Task<RestVoiceChannel> CreateVoiceChannelAsync(string name, Action<VoiceChannelProperties> func = null, RequestOptions options = null)
-            => GuildHelper.CreateVoiceChannelAsync(this, Discord, name, options, func);
+        public Task<RestVoiceChannel> CreateVoiceChannelAsync(string name, Action<VoiceChannelProperties> func = null, RequestOptions options = null, IEnumerable<Overwrite> overwritePermissions = null)
+            => GuildHelper.CreateVoiceChannelAsync(this, Discord, name, options, func, overwritePermissions);
         /// <summary>
         ///     Creates a category channel with the provided name.
         /// </summary>
@@ -474,8 +474,8 @@ namespace Discord.Rest
         /// <returns>
         ///     The created category channel.
         /// </returns>
-        public Task<RestCategoryChannel> CreateCategoryChannelAsync(string name, Action<GuildChannelProperties> func = null, RequestOptions options = null)
-            => GuildHelper.CreateCategoryChannelAsync(this, Discord, name, options, func);
+        public Task<RestCategoryChannel> CreateCategoryChannelAsync(string name, Action<GuildChannelProperties> func = null, RequestOptions options = null, IEnumerable<Overwrite> overwritePermissions = null)
+            => GuildHelper.CreateCategoryChannelAsync(this, Discord, name, options, func, overwritePermissions);
 
         /// <summary>
         ///     Gets a collection of all the voice regions this guild can access.

src/Discord.Net.WebSocket/Entities/Guilds/SocketGuild.cs

@@ -581,8 +581,8 @@ namespace Discord.WebSocket
         ///     A task that represents the asynchronous creation operation. The task result contains the newly created
         ///     text channel.
         /// </returns>
-        public Task<RestTextChannel> CreateTextChannelAsync(string name, Action<TextChannelProperties> func = null, RequestOptions options = null)
-            => GuildHelper.CreateTextChannelAsync(this, Discord, name, options, func);
+        public Task<RestTextChannel> CreateTextChannelAsync(string name, Action<TextChannelProperties> func = null, RequestOptions options = null, IEnumerable<Overwrite> overwritePermissions = null)
+            => GuildHelper.CreateTextChannelAsync(this, Discord, name, options, func, overwritePermissions);
         /// <summary>
         ///     Creates a new voice channel in this guild.
         /// </summary>
@@ -594,8 +594,8 @@ namespace Discord.WebSocket
         ///     A task that represents the asynchronous creation operation. The task result contains the newly created
         ///     voice channel.
         /// </returns>
-        public Task<RestVoiceChannel> CreateVoiceChannelAsync(string name, Action<VoiceChannelProperties> func = null, RequestOptions options = null)
-            => GuildHelper.CreateVoiceChannelAsync(this, Discord, name, options, func);
+        public Task<RestVoiceChannel> CreateVoiceChannelAsync(string name, Action<VoiceChannelProperties> func = null, RequestOptions options = null, IEnumerable<Overwrite> overwritePermissions = null)
+            => GuildHelper.CreateVoiceChannelAsync(this, Discord, name, options, func, overwritePermissions);
         /// <summary>
         ///     Creates a new channel category in this guild.
         /// </summary>
@@ -607,8 +607,8 @@ namespace Discord.WebSocket
         ///     A task that represents the asynchronous creation operation. The task result contains the newly created
         ///     category channel.
         /// </returns>
-        public Task<RestCategoryChannel> CreateCategoryChannelAsync(string name, Action<GuildChannelProperties> func = null, RequestOptions options = null)
-            => GuildHelper.CreateCategoryChannelAsync(this, Discord, name, options, func);
+        public Task<RestCategoryChannel> CreateCategoryChannelAsync(string name, Action<GuildChannelProperties> func = null, RequestOptions options = null, IEnumerable<Overwrite> overwritePermissions = null)
+            => GuildHelper.CreateCategoryChannelAsync(this, Discord, name, options, func, overwritePermissions);
 
         internal SocketGuildChannel AddChannel(ClientState state, ChannelModel model)
         {