feat(Sticker): updates, sticker packs, and guild stickers

src/client/Client.js

@@ -14,6 +14,8 @@ const ClientPresence = require('../structures/ClientPresence');
 const GuildPreview = require('../structures/GuildPreview');
 const GuildTemplate = require('../structures/GuildTemplate');
 const Invite = require('../structures/Invite');
+const Sticker = require('../structures/Sticker');
+const StickerPack = require('../structures/StickerPack');
 const VoiceRegion = require('../structures/VoiceRegion');
 const Webhook = require('../structures/Webhook');
 const Widget = require('../structures/Widget');
@@ -304,6 +306,33 @@ class Client extends BaseClient {
     });
   }
 
+  /**
+   * Obtains a sticker from Discord.
+   * @param {Snowflake} id The sticker's id
+   * @returns {Promise<Sticker>}
+   * @example
+   * client.fetchSticker('id')
+   *   .then(sticker => console.log(`Obtained sticker with name: ${sticker.name}`))
+   *   .catch(console.error);
+   */
+  async fetchSticker(id) {
+    const data = await this.api.stickers(id).get();
+    return new Sticker(this, data);
+  }
+
+  /**
+   * Obtains the list of sticker packs available to Nitro subscribers from Discord.
+   * @returns {Promise<Collection<Snowflake, StickerPack>>}
+   * @example
+   * client.fetchPremiumStickerPacks()
+   *   .then(packs => console.log(`Available sticker packs are: ${packs.map(pack => pack.name).join(', ')}`))
+   *   .catch(console.error);
+   */
+  async fetchPremiumStickerPacks() {
+    const data = await this.api('sticker-packs').get();
+    return new Collection(data.sticker_packs.map(p => [p.id, new StickerPack(this, p)]));
+  }
+
   /**
    * Sweeps all text-based channels' messages and removes the ones older than the max message lifetime.
    * If the message has been edited, the time of the edit is used rather than the time of the original message.

src/client/actions/ActionsManager.js

@@ -47,6 +47,10 @@ class ActionsManager {
     this.register(require('./StageInstanceCreate'));
     this.register(require('./StageInstanceUpdate'));
     this.register(require('./StageInstanceDelete'));
+    this.register(require('./GuildStickerCreate'));
+    this.register(require('./GuildStickerDelete'));
+    this.register(require('./GuildStickerUpdate'));
+    this.register(require('./GuildStickersUpdate'));
   }
 
   register(Action) {

src/client/actions/GuildStickerCreate.js

@@ -0,0 +1,20 @@
+'use strict';
+
+const Action = require('./Action');
+const { Events } = require('../../util/Constants');
+
+class GuildStickerCreateAction extends Action {
+  handle(guild, createdSticker) {
+    const already = guild.stickers.cache.has(createdSticker.id);
+    const sticker = guild.stickers.add(createdSticker);
+    /**
+     * Emitted whenever a custom sticker is created in a guild.
+     * @event Client#stickerCreate
+     * @param {Sticker} sticker The sticker that was created
+     */
+    if (!already) this.client.emit(Events.GUILD_STICKER_CREATE, sticker);
+    return { sticker };
+  }
+}
+
+module.exports = GuildStickerCreateAction;

src/client/actions/GuildStickerDelete.js

@@ -0,0 +1,20 @@
+'use strict';
+
+const Action = require('./Action');
+const { Events } = require('../../util/Constants');
+
+class GuildStickerDeleteAction extends Action {
+  handle(sticker) {
+    sticker.guild.stickers.cache.delete(sticker.id);
+    sticker.deleted = true;
+    /**
+     * Emitted whenever a custom sticker is deleted in a guild.
+     * @event Client#stickerDelete
+     * @param {Sticker} sticker The sticker that was deleted
+     */
+    this.client.emit(Events.GUILD_STICKER_DELETE, sticker);
+    return { sticker };
+  }
+}
+
+module.exports = GuildStickerDeleteAction;

src/client/actions/GuildStickerUpdate.js

@@ -0,0 +1,20 @@
+'use strict';
+
+const Action = require('./Action');
+const { Events } = require('../../util/Constants');
+
+class GuildStickerUpdateAction extends Action {
+  handle(current, data) {
+    const old = current._update(data);
+    /**
+     * Emitted whenever a custom sticker is updated in a guild.
+     * @event Client#stickerUpdate
+     * @param {Sticker} oldSticker The old sticker
+     * @param {Sticker} newSticker The new sticker
+     */
+    this.client.emit(Events.GUILD_STICKER_UPDATE, old, current);
+    return { sticker: current };
+  }
+}
+
+module.exports = GuildStickerUpdateAction;

src/client/actions/GuildStickersUpdate.js

@@ -0,0 +1,34 @@
+'use strict';
+
+const Action = require('./Action');
+
+class GuildStickersUpdateAction extends Action {
+  handle(data) {
+    const guild = this.client.guilds.cache.get(data.guild_id);
+    if (!guild?.stickers) return;
+
+    const deletions = new Map(guild.stickers.cache);
+
+    for (const sticker of data.stickers) {
+      // Determine type of sticker event
+      const cachedSticker = guild.stickers.cache.get(sticker.id);
+      if (cachedSticker) {
+        deletions.delete(sticker.id);
+        if (!cachedSticker.equals(sticker)) {
+          // Sticker updated
+          this.client.actions.GuildStickerUpdate.handle(cachedSticker, sticker);
+        }
+      } else {
+        // Sticker added
+        this.client.actions.GuildStickerCreate.handle(guild, sticker);
+      }
+    }
+
+    for (const sticker of deletions.values()) {
+      // Sticker deleted
+      this.client.actions.GuildStickerDelete.handle(sticker);
+    }
+  }
+}
+
+module.exports = GuildStickersUpdateAction;

src/client/websocket/handlers/GUILD_STICKERS_UPDATE.js

@@ -0,0 +1,5 @@
+'use strict';
+
+module.exports = (client, packet) => {
+  client.actions.GuildStickersUpdate.handle(packet.d);
+};

src/errors/Messages.js

@@ -107,8 +107,9 @@ const Messages = {
 
   EMOJI_TYPE: 'Emoji must be a string or GuildEmoji/ReactionEmoji',
   EMOJI_MANAGED: 'Emoji is managed and has no Author.',
-  MISSING_MANAGE_EMOJIS_PERMISSION: guild =>
-    `Client must have Manage Emoji permission in guild ${guild} to see emoji authors.`,
+  MISSING_MANAGE_EMOJIS_AND_STICKERS_PERMISSION: guild =>
+    `Client must have Manage Emojis and Stickers permission in guild ${guild} to see emoji authors.`,
+  NOT_GUILD_STICKER: 'Sticker is a standard (non-guild) sticker and has no author.',
 
   REACTION_RESOLVE_USER: "Couldn't resolve the user id to remove from the reaction.",
 

src/index.js

@@ -45,6 +45,7 @@ module.exports = {
   GuildMemberManager: require('./managers/GuildMemberManager'),
   GuildMemberRoleManager: require('./managers/GuildMemberRoleManager'),
   GuildManager: require('./managers/GuildManager'),
+  GuildStickerManager: require('./managers/GuildStickerManager'),
   ReactionManager: require('./managers/ReactionManager'),
   ReactionUserManager: require('./managers/ReactionUserManager'),
   MessageManager: require('./managers/MessageManager'),

src/managers/GuildStickerManager.js

@@ -0,0 +1,161 @@
+'use strict';
+
+const CachedManager = require('./CachedManager');
+const { TypeError } = require('../errors');
+const MessagePayload = require('../structures/MessagePayload');
+const Sticker = require('../structures/Sticker');
+const Collection = require('../util/Collection');
+
+/**
+ * Manages API methods for Guild Stickers and stores their cache.
+ * @extends {CachedManager}
+ */
+class GuildStickerManager extends CachedManager {
+  constructor(guild, iterable) {
+    super(guild.client, Sticker, iterable);
+
+    /**
+     * The guild this manager belongs to
+     * @type {Guild}
+     */
+    this.guild = guild;
+  }
+
+  /**
+   * The cache of Guild Stickers
+   * @type {Collection<Snowflake, Sticker>}
+   * @name GuildStickerManager#cache
+   */
+
+  add(data, cache) {
+    return super.add(data, cache, { extras: [this.guild] });
+  }
+
+  /**
+   * Creates a new custom sticker in the guild.
+   * @param {BufferResolvable|Stream|FileOptions|MessageAttachment} file The file for the sticker
+   * @param {string} name The name for the sticker
+   * @param {string} tags The Discord name of a unicode emoji representing the sticker's expression
+   * @param {Object} [options] Options
+   * @param {?string} [options.description] The description for the sticker
+   * @param {string} [options.reason] Reason for creating the sticker
+   * @returns {Promise<Sticker>} The created sticker
+   * @example
+   * // Create a new sticker from a url
+   * guild.stickers.create('https://i.imgur.com/w3duR07.png', 'rip')
+   *   .then(sticker => console.log(`Created new sticker with name ${sticker.name}!`))
+   *   .catch(console.error);
+   * @example
+   * // Create a new sticker from a file on your computer
+   * guild.stickers.create('./memes/banana.png', 'banana')
+   *   .then(sticker => console.log(`Created new sticker with name ${sticker.name}!`))
+   *   .catch(console.error);
+   */
+  async create(file, name, tags, { description, reason } = {}) {
+    file = { ...(await MessagePayload.resolveFile(file)), key: 'file' };
+    if (!file) throw new TypeError('REQ_RESOURCE_TYPE');
+
+    const data = { name, tags, description: description ?? '' };
+
+    return this.client.api
+      .guilds(this.guild.id)
+      .stickers.post({ data, files: [file], reason, dontUsePayloadJSON: true })
+      .then(sticker => this.client.actions.GuildStickerCreate.handle(this.guild, sticker).sticker);
+  }
+
+  /**
+   * Data that resolves to give a Sticker object. This can be:
+   * * An Sticker object
+   * * A Snowflake
+   * @typedef {Sticker|Snowflake} StickerResolvable
+   */
+
+  /**
+   * Resolves an StickerResolvable to a Sticker object.
+   * @method resolve
+   * @memberof GuildStickerManager
+   * @instance
+   * @param {StickerResolvable} sticker The Sticker resolvable to identify
+   * @returns {?Sticker}
+   */
+
+  /**
+   * Resolves an StickerResolvable to an Sticker id string.
+   * @method resolveId
+   * @memberof GuildStickerManager
+   * @instance
+   * @param {StickerResolvable} sticker The Sticker resolvable to identify
+   * @returns {?Snowflake}
+   */
+
+  /**
+   * Edits a sticker.
+   * @param {StickerResolvable} sticker The sticker to edit
+   * @param {GuildStickerEditData} [data] The new data for the sticker
+   * @param {string} [reason] Reason for editing this sticker
+   * @returns {Promise<Sticker>}
+   */
+  async edit(sticker, data, reason) {
+    const stickerId = this.resolveId(sticker);
+    if (!stickerId) throw new TypeError('INVALID_TYPE', 'sticker', 'StickerResolvable');
+
+    const d = await this.client.api.guilds(this.guild.id).stickers(stickerId).patch({
+      data,
+      reason,
+    });
+
+    const existing = this.cache.get(stickerId);
+    if (existing) {
+      const clone = existing._clone();
+      clone._patch(d);
+      return clone;
+    }
+    return this.add(d);
+  }
+
+  /**
+   * Deletes a sticker.
+   * @param {StickerResolvable} sticker The sticker to delete
+   * @param {string} [reason] Reason for deleting this sticker
+   * @returns {Promise<void>}
+   */
+  async delete(sticker, reason) {
+    sticker = this.resolveId(sticker);
+    if (!sticker) throw new TypeError('INVALID_TYPE', 'sticker', 'StickerResolvable');
+
+    await this.client.api.guilds(this.guild.id).stickers(sticker).delete({ reason });
+  }
+
+  /**
+   * Obtains one or more stickers from Discord, or the sticker cache if they're already available.
+   * @param {Snowflake} [id] The Sticker's id
+   * @param {BaseFetchOptions} [options] Additional options for this fetch
+   * @returns {Promise<Sticker|Collection<Snowflake, Sticker>>}
+   * @example
+   * // Fetch all stickers from the guild
+   * message.guild.stickers.fetch()
+   *   .then(stickers => console.log(`There are ${stickers.size} stickers.`))
+   *   .catch(console.error);
+   * @example
+   * // Fetch a single sticker
+   * message.guild.stickers.fetch('222078108977594368')
+   *   .then(sticker => console.log(`The sticker name is: ${sticker.name}`))
+   *   .catch(console.error);
+   */
+  async fetch(id, { cache = true, force = false } = {}) {
+    if (id) {
+      if (!force) {
+        const existing = this.cache.get(id);
+        if (existing) return existing;
+      }
+      const sticker = await this.client.api.guilds(this.guild.id).stickers(id).get();
+      return this.add(sticker, cache);
+    }
+
+    const data = await this.client.api.guilds(this.guild.id).stickers.get();
+    const stickers = new Collection(data.map(sticker => [sticker.id, this.add(sticker, cache)]));
+    return stickers;
+  }
+}
+
+module.exports = GuildStickerManager;

src/rest/APIRequest.js

@@ -43,8 +43,16 @@ class APIRequest {
     let body;
     if (this.options.files && this.options.files.length) {
       body = new FormData();
-      for (const file of this.options.files) if (file && file.file) body.append(file.name, file.file, file.name);
-      if (typeof this.options.data !== 'undefined') body.append('payload_json', JSON.stringify(this.options.data));
+      for (const file of this.options.files) {
+        if (file && file.file) body.append(file.key ?? file.name, file.file, file.name);
+      }
+      if (typeof this.options.data !== 'undefined') {
+        if (this.options.dontUsePayloadJSON) {
+          for (const [key, value] of Object.entries(this.options.data)) body.append(key, value);
+        } else {
+          body.append('payload_json', JSON.stringify(this.options.data));
+        }
+      }
       headers = Object.assign(headers, body.getHeaders());
       // eslint-disable-next-line eqeqeq
     } else if (this.options.data != null) {

src/structures/Guild.js

@@ -14,6 +14,7 @@ const GuildChannelManager = require('../managers/GuildChannelManager');
 const GuildEmojiManager = require('../managers/GuildEmojiManager');
 const GuildInviteManager = require('../managers/GuildInviteManager');
 const GuildMemberManager = require('../managers/GuildMemberManager');
+const GuildStickerManager = require('../managers/GuildStickerManager');
 const PresenceManager = require('../managers/PresenceManager');
 const RoleManager = require('../managers/RoleManager');
 const StageInstanceManager = require('../managers/StageInstanceManager');
@@ -404,6 +405,20 @@ class Guild extends AnonymousGuild {
         emojis: data.emojis,
       });
     }
+
+    if (!this.stickers) {
+      /**
+       * A manager of the stickers belonging to this guild
+       * @type {GuildStickerManager}
+       */
+      this.stickers = new GuildStickerManager(this);
+      if (data.stickers) for (const sticker of data.stickers) this.stickers.add(sticker);
+    } else if (data.stickers) {
+      this.client.actions.GuildStickersUpdate.handle({
+        guild_id: this.id,
+        stickers: data.stickers,
+      });
+    }
   }
 
   /**