132 lines
3.5 KiB
JavaScript
132 lines
3.5 KiB
JavaScript
'use strict';
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const GuildEmoji = require('./GuildEmoji');
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const ReactionEmoji = require('./ReactionEmoji');
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const ReactionUserManager = require('../managers/ReactionUserManager');
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const Util = require('../util/Util');
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/**
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* Represents a reaction to a message.
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*/
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class MessageReaction {
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constructor(client, data, message) {
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/**
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* The client that instantiated this message reaction
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* @name MessageReaction#client
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* @type {Client}
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* @readonly
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*/
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Object.defineProperty(this, 'client', { value: client });
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/**
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* The message that this reaction refers to
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* @type {Message}
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*/
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this.message = message;
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/**
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* Whether the client has given this reaction
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* @type {boolean}
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*/
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this.me = data.me;
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/**
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* A manager of the users that have given this reaction
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* @type {ReactionUserManager}
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*/
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this.users = new ReactionUserManager(this, this.me ? [client.user] : []);
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this._emoji = new ReactionEmoji(this, data.emoji);
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this._patch(data);
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}
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_patch(data) {
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if ('count' in data) {
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/**
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* The number of people that have given the same reaction
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* @type {?number}
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*/
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this.count ??= data.count;
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}
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}
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/**
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* Removes all users from this reaction.
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* @returns {Promise<MessageReaction>}
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*/
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async remove() {
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await this.client.api
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.channels(this.message.channelId)
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.messages(this.message.id)
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.reactions(this._emoji.identifier)
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.delete();
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return this;
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}
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/**
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* The emoji of this reaction. Either a {@link GuildEmoji} object for known custom emojis, or a {@link ReactionEmoji}
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* object which has fewer properties. Whatever the prototype of the emoji, it will still have
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* `name`, `id`, `identifier` and `toString()`
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* @type {GuildEmoji|ReactionEmoji}
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* @readonly
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*/
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get emoji() {
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if (this._emoji instanceof GuildEmoji) return this._emoji;
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// Check to see if the emoji has become known to the client
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if (this._emoji.id) {
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const emojis = this.message.client.emojis.cache;
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if (emojis.has(this._emoji.id)) {
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const emoji = emojis.get(this._emoji.id);
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this._emoji = emoji;
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return emoji;
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}
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}
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return this._emoji;
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}
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/**
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* Whether or not this reaction is a partial
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* @type {boolean}
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* @readonly
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*/
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get partial() {
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return this.count === null;
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}
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/**
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* Fetch this reaction.
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* @returns {Promise<MessageReaction>}
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*/
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async fetch() {
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const message = await this.message.fetch();
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const existing = message.reactions.cache.get(this.emoji.id ?? this.emoji.name);
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// The reaction won't get set when it has been completely removed
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this._patch(existing ?? { count: 0 });
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return this;
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}
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toJSON() {
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return Util.flatten(this, { emoji: 'emojiId', message: 'messageId' });
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}
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_add(user) {
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if (this.partial) return;
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this.users.cache.set(user.id, user);
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if (!this.me || user.id !== this.message.client.user.id || this.count === 0) this.count++;
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this.me ||= user.id === this.message.client.user.id;
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}
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_remove(user) {
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if (this.partial) return;
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this.users.cache.delete(user.id);
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if (!this.me || user.id !== this.message.client.user.id) this.count--;
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if (user.id === this.message.client.user.id) this.me = false;
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if (this.count <= 0 && this.users.cache.size === 0) {
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this.message.reactions.cache.delete(this.emoji.id ?? this.emoji.name);
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}
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}
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}
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module.exports = MessageReaction;
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