82 lines
2.3 KiB
JavaScript
82 lines
2.3 KiB
JavaScript
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"use strict";
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const util = require("util");
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/**
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* Provides utilities for working with many Discord structures
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* @prop {string} id A Discord snowflake identifying the object
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* @prop {Number} createdAt Timestamp of structure creation
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*/
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class Base {
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constructor(id) {
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if(id) {
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this.id = id;
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}
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}
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get createdAt() {
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return Base.getCreatedAt(this.id);
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}
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/**
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* Calculates the timestamp in milliseconds associated with a Discord ID/snowflake
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* @param {String} id The ID of a structure
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* @returns {Number}
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*/
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static getCreatedAt(id) {
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return Base.getDiscordEpoch(id) + 1420070400000;
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}
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/**
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* Gets the number of milliseconds since epoch represented by an ID/snowflake
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* @param {string} id The ID of a structure
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* @returns {number}
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*/
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static getDiscordEpoch(id) {
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return Math.floor(id / 4194304);
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}
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[util.inspect.custom]() {
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// http://stackoverflow.com/questions/5905492/dynamic-function-name-in-javascript
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const copy = new {[this.constructor.name]: class {}}[this.constructor.name]();
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for(const key in this) {
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if(this.hasOwnProperty(key) && !key.startsWith("_") && this[key] !== undefined) {
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copy[key] = this[key];
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}
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}
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return copy;
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}
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toString() {
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return `[${this.constructor.name} ${this.id}]`;
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}
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toJSON(props = []) {
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const json = {};
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if(this.id) {
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json.id = this.id;
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json.createdAt = this.createdAt;
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}
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for(const prop of props) {
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const value = this[prop];
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const type = typeof value;
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if(value === undefined) {
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continue;
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} else if(type !== "object" && type !== "function" && type !== "bigint" || value === null) {
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json[prop] = value;
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} else if(value.toJSON !== undefined) {
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json[prop] = value.toJSON();
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} else if(value.values !== undefined) {
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json[prop] = [...value.values()];
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} else if(type === "bigint") {
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json[prop] = value.toString();
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} else if(type === "object") {
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json[prop] = value;
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}
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}
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return json;
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}
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}
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module.exports = Base;
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