Index.js

const Discord = require("discord.js");
const fs = require("fs")
const {stripIndent} = require("common-tags")
const config = require("./config.json");
const prefix = config.prefix;
const bot = new Discord.Client();
bot.commands = new Discord.Collection();


const mongoose = require("mongoose");

mongoose.connect("", {
  useNewUrlParser: true,
  useCreateIndex: true
})

const User = require("./models/users.js");

User.findOrCreate = async function (user) {
  if ([user.id, user.tag].some(p => typeof p !== "string"))
    throw new TypeError("User ID and tag must be a string")
    let resUser = await this.findOne({userID: user.id, guildID})

  if (!resUser) {
    console.log("User not in DB - creating the user.")
    resUser = new User({
      userID: user.id,
      tag: user.tag
    })
    await resUser.save()
    console.log("User created")

  }
  return resUser

}
bot.db = {
  User
}


//command handler
fs.readdir("./commands/", (err, files) => {

    if(err) console.log(err);
    let jsfile = files.filter(f => f.split(".").pop() === "js");
    if(jsfile.length <= 0){
      console.log("Couldn't find commands.");
      return;
    }

    jsfile.forEach((f, i) =>{
      let props = require(`./commands/${f}`);
      console.log(`${f} loaded!`);
      bot.commands.set(props.help.name, props);
    });
  });

//Ready Event
bot.on("ready" , async ()=> {
    console.log(`${bot.user.username} is online!\nIn ${bot.guilds.size} Guild!\nServing ${bot.users.size} users!`)

});

//Message Event
bot.on('message', message => {

    let sender = message.author;
    let msg = message.content.toUpperCase();
    let messageArray = message.content.split(" ");
    let args = messageArray.slice(1);
    let cmd = messageArray[0];
    let commandfile = bot.commands.get(cmd.slice(prefix.length));




//cmd handler
if(commandfile) commandfile.run(bot,message,args);
});

bot.on("messageDelete", (message) => {
  let chnl1 = bot.channels.find(c => c.name === "message-log")
  if (message.content.startsWith(prefix))
    return;
  if (message.author.id === bot.user.id)
    return;
  let msge = new Discord.RichEmbed()
    .setAuthor("Action | Message Delete", message.author.displayAvatarURL)
    .setDescription(stripIndent`
      **• Author:** ${message.author}
      **• Message:** ${message.content}
      **• Deleted in:** ${message.channel}
    `)
    .setColor(0xFFFF00)
    .setFooter(bot.user.username, bot.user.avatarURL)
    .setTimestamp();
  chnl1.send(msge)
});

bot.on("messageUpdate", (oldMessage, newMessage) => {
  if (oldMessage.content === newMessage.content)
    return
  let chnl1 = bot.channels.find(c => c.name === "message-log")
  let msge = new Discord.RichEmbed()
    .setAuthor("Action | Message Edit", oldMessage.author.displayAvatarURL)
    .setDescription(stripIndent`
      **• Author:** ${oldMessage.author}
      **• Old message:** ${oldMessage.content}
      **• New message:** ${newMessage.content}
      **• Edited in:** ${newMessage.channel}
    `)
    .setColor(0x1FF0B4)
    .setFooter(bot.user.username, bot.user.avatarURL)
    .setTimestamp();

  chnl1.send(msge);
});

bot.on("guildMemberAdd", member =>{

    let channel =  member.guild.channels.find(`name`, `member-log`);
    let aRole = (member.guild.roles.find("name", "Member"))
  if(!channel) return;
    let embed = new Discord.RichEmbed()
    .setColor("#39afdd")
    .setAuthor("Action | User Joined", member.user.displayAvatarURL)
    .setDescription(`
      **• User:** ${member.user}
      **• To get started:** Please read <#545675332225728514>
      **• Server IP ** 178.32.54.40:28195
    `)

    channel.send(embed);
    member.addRole(aRole);
    return;



});

bot.on("guildMemberRemove", member =>{

    let channel =  member.guild.channels.find(`name`, `member-log`);
    if(!channel) return;
    let embed = new Discord.RichEmbed()
    .setColor("#39afdd")
    .setAuthor("Action | User Left", member.user.displayAvatarURL)
    .setDescription(`
      **• User:** ${member.user}
    `)

    channel.send(embed);
    return;

});


bot.login(config.token);