62 lines
1.5 KiB
JavaScript
62 lines
1.5 KiB
JavaScript
'use strict';
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const BaseManager = require('./BaseManager');
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const { Error } = require('../errors');
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/**
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* Manages the API methods of a data model along with a collection of instances.
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* @extends {BaseManager}
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* @abstract
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*/
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class DataManager extends BaseManager {
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constructor(client, holds) {
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super(client);
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/**
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* The data structure belonging to this manager.
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* @name DataManager#holds
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* @type {Function}
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* @private
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* @readonly
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*/
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Object.defineProperty(this, 'holds', { value: holds });
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}
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/**
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* The cache of items for this manager.
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* @type {Collection}
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* @abstract
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*/
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get cache() {
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throw new Error('NOT_IMPLEMENTED', 'get cache', this.constructor.name);
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}
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/**
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* Resolves a data entry to a data Object.
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* @param {string|Object} idOrInstance The id or instance of something in this Manager
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* @returns {?Object} An instance from this Manager
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*/
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resolve(idOrInstance) {
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if (idOrInstance instanceof this.holds) return idOrInstance;
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if (typeof idOrInstance === 'string') return this.cache.get(idOrInstance) ?? null;
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return null;
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}
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/**
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* Resolves a data entry to an instance id.
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* @param {string|Object} idOrInstance The id or instance of something in this Manager
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* @returns {?Snowflake}
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*/
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resolveId(idOrInstance) {
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if (idOrInstance instanceof this.holds) return idOrInstance.id;
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if (typeof idOrInstance === 'string') return idOrInstance;
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return null;
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}
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valueOf() {
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return this.cache;
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}
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}
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module.exports = DataManager;
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