index.js

require('./server');

const { token } = process.env;

const fetch = require('node-fetch');
const Discord = require('discord.js');

const client = new Discord.Client();

const prefix = ';';

const moment = require('moment-timezone');

const got = require("got");

const mongo = require("mongodb");
const {
    Sequelize,
    DataTypes
} = require('sequelize');


const fs = require("fs");

const version = "1.0.0";

client.commands = new Discord.Collection();


client.commands = new Discord.Collection();
const commandFiles = fs.readdirSync('./commands').filter(file => file.endsWith('.js'));
for (const file of commandFiles) {
	const command = require(`./commands/${file}`);
	client.commands.set(command.name, command);
}

const cooldowns = new Discord.Collection();

client.on("ready", () => {
  console.log(`Logged in as ${client.user.tag}!`);
  client.user.setActivity(';help | v1.0.1', { type: 'LISTENING' })
});

client.on('message', message => {
	if (!message.content.startsWith(prefix) || message.author.bot) return;

	const args = message.content.slice(prefix.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 (command.guildOnly && message.channel.type === 'dm') {
	return message.reply('I can\'t execute that command inside DMs!');
}

	if (command.permissions) {
		const authorPerms = message.channel.permissionsFor(message.author);
		if (!authorPerms || !authorPerms.has(command.permissions)) {
			return message.channel.reply('You can not do this!');
		}
	}

	if (command.args && !args.length) {
    let reply = `You didn't provide any arguments, ${message.author}!`;

		if (command.usage) {
			reply += `\nThe proper usage would be: \`${prefix}${command.name} ${command.usage}\``;
		}

		return message.channel.send(reply);
	}

if (!cooldowns.has(command.name)) {
	cooldowns.set(command.name, new Discord.Collection());
}

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;
		return message.reply(`please wait ${timeLeft.toFixed(1)} more second(s) before reusing the \`${command.name}\` command.`);
	}
}
timestamps.set(message.author.id, now);
setTimeout(() => timestamps.delete(message.author.id), cooldownAmount);


  try {
    command.execute(message, args);
  } catch (error) {
	  console.error(error);
	  message.reply('there was an error trying to execute that command!');
  }

  
});

client.on('guildMemberAdd', member => {
  const channel = member.guild.channels.cache.find(ch => ch.name === 'member-log');
  if (!channel) return;
  channel.send(`Howdy ${member}! Welcome to the server.`);
});

client.login(token);