index.js

/**
 * Module Imports
 */

const { Client, Collection } = require("discord.js");
const { readdirSync } = require("fs");
const { join } = require("path");
const { MessageEmbed } = require('discord.js');
const client = new Client({ disableMentions: "everyone" });
const {prefix, ownerId, coownerId} = require('./config.json');
client.commands = new Collection();
client.prefix = prefix;
const cooldowns = new Collection();
const escapeRegex = (str) => str.replace(/[.*+?^${}()|[\]\\]/g, "\\$&");

/**
 * Client Events
 * @todo Changing Status / 5000ms
 */
client.on("ready", () => {
  console.log(`${client.user.username} ready!`);
  client.user.setActivity(`to ${prefix}help`, {
    type: 'LISTENING'
  }, 'online')
});

/**
 * Command Handler
 */

const commandFiles = readdirSync(join(__dirname, "commands")).filter((file) => file.endsWith(".js"));
for (const file of commandFiles) {
  const command = require(join(__dirname, "commands", `${file}`));
  client.commands.set(command.name, command);
}

client.on("message", async (message) => {
  if (message.author.bot) return;


  const prefixRegex = new RegExp(`^(<@!?${client.user.id}>|${escapeRegex(prefix)})\\s*`);
  if (!prefixRegex.test(message.content)) return;

  const [, matchedPrefix] = message.content.match(prefixRegex);

  const args = message.content.slice(matchedPrefix.length).trim().split(/ +/);
  const commandName = args.shift().toLowerCase();

  const command =
    client.commands.get(commandName) ||
    client.commands.find((cmd) => cmd.aliases && cmd.aliases.includes(commandName));

  if (!command) return;

  if (!cooldowns.has(command.name)) {
    cooldowns.set(command.name, new Collection());
  }
  /**
   * DMOnly Commands > Mainly commands with permissions
   * @todo Renny: Add better messages
   */
  if (command.guildOnly && message.channel.type === 'dm') {
    const dmOnly = new MessageEmbed()
    dmOnly.setTitle('Guild Only Command')
    dmOnly.setDescription('This command can only be used in Servers/Guilds')
    dmOnly.addField('Try Using the command in a guild or server instead of Direct Messages', 'Feel this is a mistake? Report it to the developers!')
    dmOnly.setFooter('Thanks for using Cindy!', message.author.displayAvatarURL({
      dynamic: true
    }))
    message.author.send(dmOnly)
    return false;
  }
  /**
   * DevloperOnly
   * @todo Add better messages
   */
  if (command.ownerOnly && message.author.id !== ownerId || coownerId) {
    const devOnly = new MessageEmbed()
    devOnly.setTitle('Developer Only Command')
    devOnly.setDescription('This command can only be used by developers')
    devOnly.addField('Next time don\'t try to use a Developer Only Command', 'You won\'t be able to use it anyways')
    devOnly.setFooter('Thanks for using Cindy!', message.author.displayAvatarURL({
      dynamic: true
    }))
    devOnly.setColor('RANDOM')
    message.channel.send(devOnly)
    return false;
  }

  /**
   * Cooldowns
   * @todo Add Random embed titles?
   */
  const now = Date.now();
  const timestamps = cooldowns.get(command.name);
  const cooldownAmount = (command.cooldown || 3) * 1000;

  if (timestamps.has(message.author.id)) {
    const expirationTime = timestamps.get(message.author.id) + cooldownAmount;

    if (now < expirationTime) {
      const timeLeft = (expirationTime - now) / 1000;
      const cembed = new MessageEmbed()
      cembed.setTitle('Hey!, Slow it down')
      cembed.setDescription(`This command is on Cooldown`)
      cembed.addField(`Please wait ${timeLeft.toFixed(1)} more seconds for using the command.`, `The cooldown for the command is ${cooldownAmount/1000} second(s)`)
      cembed.setFooter(message.member.displayName, message.author.displayAvatarURL({
        dynamic: true
      }))
      cembed.setTimestamp()
      cembed.setColor("RANDOM");

      return message.channel.send(cembed);
    }
  }

  timestamps.set(message.author.id, now);
  setTimeout(() => timestamps.delete(message.author.id), cooldownAmount);

  try {
    command.execute(message, args);
  } catch (error) {
    console.error(error);
    const eembed = new MessageEmbed()
    eembed.setTitle('Error!')
    eembed.setDescription(`An error occured while using this command`)
    eembed.addField(`Please wait wait while the devs fix it!. If the error continues please contact the devs!`, `Sorry for the inconvienience`)
    eembed.setFooter(message.member.displayName, message.author.displayAvatarURL({
      dynamic: true
    }))
    eembed.setTimestamp()
    eembed.setColor("RANDOM");
    message.reply(eembed).catch(console.error);

  }
});