Creating multiple unique alphanumeric codes with a single array in a Discord bot using Node.js

Other Questions Discord bot
1

I’m having trouble figuring out how to make my Discord bot generate several different random strings. Right now, when a user types %random, the bot only creates one string. But I want it to generate multiple unique codes. Here’s what my code looks like:

const { MessageEmbed } = require('discord.js');
const settings = require('../settings.json');

module.exports = {
  name: 'generatecode',
  description: 'Creates random alphanumeric codes',

  run(msg) {
    if (msg.channel.id !== settings.codeChannelId) {
      msg.channel.send(
        new MessageEmbed()
          .setColor(settings.colors.main)
          .setTitle('Incorrect Channel')
          .setDescription(`Please use <#${settings.codeChannelId}> to generate codes`)
          .setFooter(msg.author.tag, msg.author.displayAvatarURL({ dynamic: true, size: 64 }))
          .setTimestamp()
      );
      return;
    }

    const code = Math.random().toString(36).substring(7);
    msg.channel.send(
      new MessageEmbed()
        .setColor(settings.colors.main)
        .setTitle('Code Generated')
        .setDescription(`${code}\n${code}`)
        .setFooter(msg.author.tag, msg.author.displayAvatarURL({ dynamic: true, size: 64 }))
        .setTimestamp()
    );
  }
};

The bot sends an embed with the same code twice. How can I modify it to generate multiple different codes?

2

I’ve dealt with a similar issue when building my own Discord bot. Here’s what worked for me:

Instead of generating just one code, create an array to store multiple unique codes. You can use a loop to generate the desired number of codes, checking each new code against the existing ones to avoid duplicates.

Here’s a quick example of how you could modify your code:

const codes = [];
const numCodes = 5; // Number of codes to generate

while (codes.length < numCodes) {
  const newCode = Math.random().toString(36).substring(7);
  if (!codes.includes(newCode)) {
    codes.push(newCode);
  }
}

// Join the codes array into a string, with each code on a new line
const codeString = codes.join('\n');

// Use codeString in your embed description

This approach ensures you get the desired number of unique codes. You can adjust the ‘numCodes’ variable to generate as many codes as you need. Hope this helps!

3

yo, try using a loop to make multiple codes. somethin like:

let codes = [];
for (let i = 0; i < 5; i++) {
  codes.push(Math.random().toString(36).substring(7));
}

then join em with ‘\n’ in ur embed description. that shud give u diff codes each time

4

I’ve encountered this issue before when working on a similar project. One effective solution is to utilize the crypto module for enhanced randomness. Here’s a quick modification you could implement:

const crypto = require('crypto');

function generateUniqueCode(length = 7) {
  return crypto.randomBytes(length).toString('hex');
}

const codes = new Set();
while (codes.size < 5) {
  codes.add(generateUniqueCode());
}

const codeString = Array.from(codes).join('\n');

This approach uses cryptographically strong random values, which is ideal for generating unique codes. The Set data structure ensures no duplicates, and you can easily adjust the number and length of codes generated. Incorporate this into your existing code, replacing the description in your embed with codeString. This should solve your multiple unique code generation problem efficiently.