index.js

require("dotenv").config();
const Discord = require("discord.js");
const client = new Discord.Client();
const { promisify } = require("util");
const readdir = promisify(require("fs").readdir);
const firestoreutils = require("./firestoreutils");
client.commands = new Map();
const TOKEN = process.env.TOKEN;
const PREFIX = process.env.PREFIX;
console.info("Using prefix: " + PREFIX);

// FIRESTORE SETUP
const admin = require("firebase-admin");

// const serviceAccount = require("./../beerbot-295821-f6a45f63797f.json");
const parsedCredentials = JSON.parse(process.env.GOOGLE_CREDENTIALS);

console.info("Connecting to firebase. . . .");
admin.initializeApp({
  credential: admin.credential.cert(parsedCredentials),
});

const db = admin.firestore();
// END FIRESTORE SETUP

console.info("Logging into discord with token. . .")
client.login(TOKEN);

client.on("ready", () => {
  console.info(`Logged in as ${client.user.tag}!`);
  // register all our chat commands from the /commands folder
  readdir("./commands/", (error, files) => {
    if (error) throw error;
    files.forEach((file) => {
      if (!file.endsWith(".js")) return; // make sure the file is what you are looking for
      try {
        const properties = require(`./commands/${file}`);
        client.commands.set(properties.help.name, properties);
      } catch (err) {
        throw err;
      }
    });
  });
});

client.on("message", (msg) => {
  if (!msg.guild) return; // exit if the message does not have a guild
  if ((msg.author.username === "Beerform")) {
    try {
      firestoreutils.setBeerRatingFromForm(msg, db);
    } catch (e) {
      // uh oh - most likely this was a problem parsing the response
      msg.channel.send("Uh Oh - something went wrong. . .")
    }
  }
  if (msg.author.bot) return; // exit if the message author is a bot
  var userMention = msg.mentions.members.first();
  // remove the prefix and map each arg to an array
  const args = msg.content
    .slice(PREFIX.length)
    .trim()
    .split(/ +/g)
    .map(Function.prototype.call, String.prototype.trim);
  const command = args.shift().toLowerCase();
  const cmd = client.commands.get(command);
  if (!cmd) {
    // the message is not a command we know of
    // check for user mention functionality
    if (userMention) {
      // for some reason sometimes when beerbot is mentioned the username that comes through is "Beerform"
      // this is bandage fix for now - not sure why this is happening
      var isBotMention =
        userMention.user.username === "beerbot" ||
        userMention.user.username === "Beerform";
      if (isBotMention && msg.content.toLowerCase().includes("how do i make")) {
        const howdoimakecmd = client.commands.get("howdoimake");
        howdoimakecmd.run(
          client,
          msg,
          args.slice(args.indexOf("make") + 1),
          db
        );
      } else if (args[0] === "🍻") {
        // there's at least one mentioned user and a cheers emoji
        const cheercmd = client.commands.get("cheer");
        cheercmd.run(client, msg, args, db);
      }
    }
  } else {
    // run the command
    cmd.run(client, msg, args, db);
  }
});