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import axios from "axios";
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import { Client, CommandInteraction, GuildMember, Intents, Message } from "discord.js";
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import { EventEmitter } from "events";
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import * as http from "http";
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import { Command } from "./Command.js";
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import { CommandManager } from "../managers/CommandManager.js";
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import { OperationSuccess, PermissionsError } from "../errors.js";
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import { HelpMessage } from "./Help.js";
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import { SystemMessageManager } from "../managers/SystemMessage.js";
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import { CommandMessageStructure } from "../types/Command.js";
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import { InitOptions } from "../types/Bot.js";
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import { HelpMessageParams } from "../types/HelpMessage.js";
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import { applicationState } from "../state.js";
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export declare interface Bot {
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on(event: "READY", listener: Function): this;
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on(event: "MESSAGE", listener: (m: Message) => void): this;
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on(event: "COMMAND", listener: (m: Message | CommandInteraction, cmdMsg: CommandMessageStructure) => void): this;
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on(event: "ERROR", listener: (e: any) => void): this;
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}
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/**
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* @class Class that represents your bot instance
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* @extends {EventEmitter}
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* @exports
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*/
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export class Bot extends EventEmitter {
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/**
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* Bot name
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* @type {string}
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*/
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public readonly name: string;
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/**
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* Discord.js {@link Client} instance
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* @type {Client}
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*/
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public readonly client: Client;
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/**
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* Instance command manager
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* @type {CommandManager}
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*/
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public readonly commands: CommandManager;
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/**
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* Discord bot token
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* @type {string}
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*/
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public readonly token: string;
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/**
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* Discord API application ID
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* @type {string}
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*/
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public readonly applicationId: string;
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/**
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* Built-in messages configuration
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* @type {Object}
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*/
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public readonly messages: {
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/**
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* Help message configuration
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* @type {HelpMessageParams}
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*/
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help: HelpMessageParams;
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/**
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* {@link SystemMessageManager} storing messages' configuration
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* @type {SystemMessageManager}
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*/
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system: SystemMessageManager;
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};
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/**
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* @constructor
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* @param {InitOptions} options - instance properties ({@link InitOptions})
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*/
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constructor(options: InitOptions) {
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super();
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this.name = options.name;
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this.client = new Client(
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options.clientOptions || {
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intents: [
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Intents.FLAGS.GUILDS,
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Intents.FLAGS.GUILD_BANS,
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Intents.FLAGS.GUILD_EMOJIS_AND_STICKERS,
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Intents.FLAGS.GUILD_INTEGRATIONS,
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Intents.FLAGS.GUILD_INVITES,
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Intents.FLAGS.GUILD_MEMBERS,
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Intents.FLAGS.GUILD_MESSAGES,
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Intents.FLAGS.GUILD_MESSAGE_REACTIONS,
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Intents.FLAGS.GUILD_MESSAGE_TYPING,
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Intents.FLAGS.GUILD_PRESENCES,
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Intents.FLAGS.GUILD_VOICE_STATES,
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Intents.FLAGS.GUILD_WEBHOOKS,
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Intents.FLAGS.DIRECT_MESSAGES,
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Intents.FLAGS.DIRECT_MESSAGE_REACTIONS,
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Intents.FLAGS.DIRECT_MESSAGE_TYPING,
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],
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}
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);
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this.commands = new CommandManager(options.prefix, options.parameterSeparator);
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this.token = options.token;
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this.applicationId = options.applicationId;
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this.messages = {
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help: {
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enabled: true,
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title: "Help",
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description: "List of all available commands",
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color: "#ff5500",
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usage: "[command name (optional)]",
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bottomText: "List of all available commands",
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visible: true,
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},
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system: new SystemMessageManager(this.name),
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};
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}
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/**
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* @method
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* Starts your Discord bot
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* @param {number} [port] - if specified, the app will create a http server that will be listening on the specified port
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* @param {boolean} [register=true] - if *true* or *undefined*, the bot will register all slash commands in Discord API
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* @returns {Promise<boolean>} whether this operation has been completed successfully
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*/
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public async start(port?: number, register?: boolean): Promise<boolean> {
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try {
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console.log(`\nBot name: ${this.name}`);
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console.log(`Prefix: ${this.commands.prefix || "/ (only slash commands)"} \n`);
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if (this.token === "") {
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throw new ReferenceError('No token specified. Please pass your Discord application token as an argument to the "start" method or in the constructor');
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}
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if (port) {
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process.stdout.write(`Creating http server on port ${port}... `);
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http.createServer().listen(port);
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console.log("✔");
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}
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if (this.messages.help.enabled === true) {
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const helpMsg: Command = new HelpMessage(this.commands, this.messages.help, this.name);
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this.commands.add(helpMsg);
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}
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applicationState.running = true;
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process.stdout.write("Connecting to Discord... ");
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this.client.login(this.token);
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this.client.on("ready", async () => {
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if (register === undefined || register === true) {
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console.log("✔");
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this.register();
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} else {
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console.log("✔\n");
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}
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this.emit("READY");
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});
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this.client.on("messageCreate", async (m) => {
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let cmdMsg: CommandMessageStructure | null = null;
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try {
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cmdMsg = this.commands.fetchFromMessage(m);
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if (cmdMsg) {
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this.emit("COMMAND", m, cmdMsg);
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await cmdMsg.command.start(m, cmdMsg.parameters);
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} else if (this.commands.prefix && m.content.startsWith(this.commands.prefix)) {
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this.emit("MESSAGE", m);
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await this.messages.system.send("NOT_FOUND", { phrase: m.content, user: m.member || undefined }, m);
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} else {
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this.emit("MESSAGE", m);
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}
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} catch (e) {
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if (e instanceof PermissionsError) {
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await this.messages.system.send(
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"PERMISSION",
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{
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user: m.member || undefined,
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command: cmdMsg?.command,
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},
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m
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);
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this.emit("ERROR", e);
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} else if (e instanceof OperationSuccess) {
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await this.messages.system.send("SUCCESS", undefined, m);
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} else {
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await this.messages.system.send(
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"ERROR",
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{
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command: cmdMsg?.command,
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user: m.member || undefined,
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error: e as Error,
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},
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m
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);
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this.emit("ERROR", e);
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}
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return;
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}
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});
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this.client.on("interactionCreate", async (i) => {
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let cmd: CommandMessageStructure | null = null;
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try {
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if (!i.isCommand()) return;
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cmd = this.commands.fetchFromInteraction(i);
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if (cmd) {
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this.emit("COMMAND", i, cmd);
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await cmd.command.start(i, cmd.parameters);
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} else {
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await this.messages.system.send(
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"NOT_FOUND",
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{
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phrase: i.commandName,
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user: i.member as GuildMember,
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},
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i as CommandInteraction
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);
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}
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} catch (e) {
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if (e instanceof PermissionsError) {
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await this.messages.system.send(
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"PERMISSION",
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{
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user: (i.member as GuildMember) || undefined,
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command: cmd?.command,
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},
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i as CommandInteraction
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);
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this.emit("ERROR", e);
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} else if (e instanceof OperationSuccess) {
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await this.messages.system.send("SUCCESS", undefined, i as CommandInteraction);
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} else {
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await this.messages.system.send(
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"ERROR",
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{
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command: cmd?.command,
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user: (i.member as GuildMember) || undefined,
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error: e as Error,
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},
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i as CommandInteraction
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);
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this.emit("ERROR", e);
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}
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return;
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}
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});
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return true;
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} catch (e) {
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console.log("❌");
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console.error(`[❌ ERROR] ${e}`);
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return false;
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}
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}
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/**
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* @method
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* Registers commands from {@link CommandManager} in Discord API
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* @returns {Promise<void>}
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*/
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public async register(): Promise<void> {
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process.stdout.write("Registering commands... ");
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await axios.put(
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`https://discord.com/api/v8/applications/${this.applicationId}/commands`,
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this.commands.list.filter((c) => !Array.isArray(c.guilds) && c.slash).map((c) => c.toObject()),
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{ headers: { Authorization: `Bot ${this.token}` } }
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);
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const guilds: any = {};
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await this.commands.list
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.filter((c) => Array.isArray(c.guilds) && c.guilds.length > 0)
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.map((c) => {
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c.guilds?.map(async (g) => {
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if (!(await this.client.guilds.fetch(g))) {
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throw new Error(`"${g}" for "${c.name}" command is not a valid guild ID`);
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}
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if (guilds[g]) {
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guilds[g].push(c.toObject());
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} else {
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guilds[g] = [];
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guilds[g].push(c.toObject());
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}
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});
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});
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for (let i in guilds) {
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await axios.put(`https://discord.com/api/v8/applications/${this.applicationId}/guilds/${i}/commands`, guilds[i], {
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headers: { Authorization: `Bot ${this.token}` },
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});
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}
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console.log("✔\n");
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}
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}
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export default Bot;
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