index.js

const fs = require('fs');
const Keyv = require('keyv');
const util = require('util');
const readline = require('readline');
const Discord = require('discord.js');
const {google} = require('googleapis');
const i18n = require("./lib/utils/i18n");
const { authorize } = require('./security/google');
const credentials = require('./credentials.json');
const { currency, prefix, token, language } = require('./config.json');
const rules = require('./commands/rules');

console.log(i18n.__('language.set'));

const client = new Discord.Client();
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);

	if (command.aliases) command.aliases.forEach(alias => client.commands.set(alias, command));
}

client.once('ready', () => {
	console.log('Ready!');
});

client.on('message', async message => {
	if (message.author != client.user) {
		const db = new Keyv('sqlite://db/' + message.guild.id + '.sqlite');

		let guildPrefix = (await db.get('config.prefix')) || prefix;
		if (!message.content.startsWith(guildPrefix) || message.author.bot) return;

		const args = message.content.slice(prefix.length).split(/ +/);
		const command = args.shift().toLowerCase();

		if (!client.commands.has(command)) return;

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

client.on('guildCreate', guild => {
	const db = new Keyv('sqlite://db/' + guild.id + '.sqlite');
});

client.on('guildMemberAdd', async guildMember => {
    const db = new Keyv('sqlite://db/' + guildMember.guild.id + '.sqlite');
	const role = await db.get('config.welcomeRole');

    if (role) {
        guildMember.roles.add(role)
        .catch((reason) => {
            console.error(reason);
            guildMember.guild.systemChannel.send('Hey! Bling-o-tron tried to set a role to a new user, but it failed. Please check that the bot role ("Bling-o-tron") is higher than the role the bot is trying to add.');
        });
	}
});

client.on('guildMemberUpdate', async (oldMember, member) => {
	if (oldMember.roles.cache.every(r => r.name != "Booster") && member.roles.cache.some(r => r.name == "Booster")) {
		member.send(`Hey ${member.displayName} ! You have been promoted to Booster, thus we would like you to check the community rules in the dedicated channel, or below because I just copied it for you !`);

		await rules.sendRules(member);
	}
})

authorize().then(() => {
	client.login(token);
}).catch(err => console.error(err));