feat(GuildChannel): support conversion between text and news (#5022)

* feat(GuildChannel): support conversion between text and news

* fix(Typings): add type to ChannelData

* fix(GuildChannel): use ChannelUpdate action handler to change class type

* Update src/structures/TextChannel.js

Co-authored-by: Sugden <28943913+NotSugden@users.noreply.github.com>

* fix(Typings): re-use ChannelType from GuildCreateChannelOptions

* fix(Typings): only allow text-news conversion

* fix(Typings): exclude -> pick (vlads suggestion)

* fix(Typings): pick -> exclude in two other spots

Co-authored-by: Sugden <28943913+NotSugden@users.noreply.github.com>

src/structures/GuildChannel.js

@@ -6,6 +6,7 @@ const PermissionOverwrites = require('./PermissionOverwrites');
 const Role = require('./Role');
 const { Error, TypeError } = require('../errors');
 const Collection = require('../util/Collection');
+const { ChannelTypes } = require('../util/Constants');
 const Permissions = require('../util/Permissions');
 const Util = require('../util/Util');
 
@@ -294,6 +295,7 @@ class GuildChannel extends Channel {
    * The data for a guild channel.
    * @typedef {Object} ChannelData
    * @property {string} [name] The name of the channel
+   * @property {string} [type] The type of the the channel (only conversion between text and news is supported)
    * @property {number} [position] The position of the channel
    * @property {string} [topic] The topic of the text channel
    * @property {boolean} [nsfw] Whether the channel is NSFW
@@ -355,6 +357,7 @@ class GuildChannel extends Channel {
     const newData = await this.client.api.channels(this.id).patch({
       data: {
         name: (data.name || this.name).trim(),
+        type: data.type ? ChannelTypes[data.type.toUpperCase()] : this.type,
         topic: data.topic,
         nsfw: data.nsfw,
         bitrate: data.bitrate || this.bitrate,
@@ -367,9 +370,7 @@ class GuildChannel extends Channel {
       reason,
     });
 
-    const clone = this._clone();
+    return this.client.actions.ChannelUpdate.handle(newData).updated;
-    clone._patch(newData);
-    return clone;
   }
 
   /**

src/structures/TextChannel.js

@@ -86,6 +86,16 @@ class TextChannel extends GuildChannel {
     return this.edit({ nsfw }, reason);
   }
 
+  /**
+   * Sets the type of this channel (only conversion between text and news is supported)
+   * @param {string} type The new channel type
+   * @param {string} [reason] Reason for changing the channel's type
+   * @returns {Promise<GuildChannel>}
+   */
+  setType(type, reason) {
+    return this.edit({ type }, reason);
+  }
+
   /**
    * Fetches all webhooks for the channel.
    * @returns {Promise<Collection<Snowflake, Webhook>>}

typings/index.d.ts

@@ -1162,6 +1162,7 @@ declare module 'discord.js' {
       options?: { avatar?: BufferResolvable | Base64Resolvable; reason?: string },
     ): Promise<Webhook>;
     public setNSFW(nsfw: boolean, reason?: string): Promise<NewsChannel>;
+    public setType(type: Pick<typeof ChannelType, 'text' | 'news'>, reason?: string): Promise<GuildChannel>;
     public fetchWebhooks(): Promise<Collection<Snowflake, Webhook>>;
     public addFollower(channel: GuildChannelResolvable, reason?: string): Promise<NewsChannel>;
   }
@@ -1513,6 +1514,7 @@ declare module 'discord.js' {
     ): Promise<Webhook>;
     public setNSFW(nsfw: boolean, reason?: string): Promise<TextChannel>;
     public setRateLimitPerUser(rateLimitPerUser: number, reason?: string): Promise<TextChannel>;
+    public setType(type: Pick<typeof ChannelType, 'text' | 'news'>, reason?: string): Promise<GuildChannel>;
     public fetchWebhooks(): Promise<Collection<Snowflake, Webhook>>;
   }
 
@@ -2339,6 +2341,7 @@ declare module 'discord.js' {
 
   interface ChannelData {
     name?: string;
+    type?: Pick<typeof ChannelType, 'text' | 'news'>;
     position?: number;
     topic?: string;
     nsfw?: boolean;