A role promotion cmd I wrote for the official Discord Server of the YT channel "Marmeladenoma"

promote.js

//Promote command plugin by https://github.com/HerrEurobeat
//This code isn't really customizeable because it is only needed for a specific use case
//Made for the Discord Bot of the official Discord Server of the YouTube channel "Marmeladenoma": https://www.youtube.com/channel/UCSSUG_vo76v04FKRnsWavMA

module.exports.run = async (bot, msg, args) => {
    const config = require("./config.json")

    if (args.length < 2) return bot.createMessage(msg.channel.id, "Fehler: Dir scheint ein Argument zu fehlen. Bitte achte auf die korrekte Eingabe.\nSyntax: !promote @Nutzer Rollenname");
    if (msg.mentions.length < 1) return bot.createMessage(msg.channel.id, `Fehler: Der Nutzer "${args[0]}" konnte leider nicht gefunden werden.`)

    var authorRoles = msg.member.roles
    var userToPromote = msg.channel.guild.members.find(member => member.id == msg.mentions[0].id)
    var providedRole = msg.channel.guild.roles.find(role => role.name == args.slice(1).join(" "))

    if (!providedRole) return bot.createMessage(msg.channel.id, `Fehler: Die Rolle "${args.slice(1).join(" ")}" konnte leider nicht gefunden werden.`)
    if (userToPromote.roles.includes(providedRole.id)) return bot.createMessage(msg.channel.id, "Fehler: Der Nutzer besitzt die Rolle bereits.")
    
    let rolePermissions = { //Key role can give user x each of it's value roles (role ids must be string because they are greater than 2^53 lol)
        "755850280704278581": ["742339559639220284", "755841728950566994", "755842335467765881", "752826814656806942", "742339559639220284", "751100852814479480", "742339302780043325", "755842335467765881", "742339477451702334", "755864075623202896"], //Admin
        "755864075623202896": ["742339477451702334"],
        "755850280704278581": ["751100852814479480", "742339302780043325"],
        "755842335467765881": ["752826814656806942"],
        "755841728950566994": ["742339559639220284"]
    }

    let allowedRoles = [] //Array that gets populated by the loop below that will contain all roles the user is allowed to give others

    //The loop is necessary because if a user has multiple key roles he would only have permissions for the values of the first key that gets found by includes()
    Object.keys(rolePermissions).forEach((e, i) => {
        if (authorRoles.includes(e)) {
            Object.values(rolePermissions)[i].forEach(f => { //oh no a loop inside a loop
                allowedRoles.push(f)
            }) } })

    if (allowedRoles.includes(providedRole.id)) { //Permission granted
        userToPromote.addRole(providedRole.id, `Promotion authorised by ${msg.author.username}#${msg.author.discriminator}`)
            .then(() => { //Add Role!
            bot.createMessage(msg.channel.id, `Dem Nutzer ${userToPromote.user.username}#${userToPromote.user.discriminator} wurde die Rolle ${providedRole.name} erfolgreich hinzugefügt.`) })
            .catch(err => {
                return bot.createMessage(msg.channel.id, `Fehler beim Hinzufügen der Rolle.\n||Error: ${err}||`) }) //err.stack would return the full error stack if needed
    } else {
        return bot.createMessage(msg.channel.id, "Fehler: Es scheint als hättest du keine Berechtigung diese Rolle zu vergeben.") }

    //Log the action
    bot.createMessage(config.promoteLogChannel, {
        embed: {
            color: parseInt(config.color.padStart(6, '0'),16),
            title: "Neue Beförderung",
            description: `**${msg.author.username}#${msg.author.discriminator}** hat dem Nutzer **${userToPromote.user.username}#${userToPromote.user.discriminator}** die Rolle **${providedRole.name}** zugewiesen.`,
            footer: {
                text: 'Promote Plugin by 3urobeat#0975' //meinen Namen kannst du hier auch entfernen wenn du möchtest
            },
            timestamp: new Date().toISOString()
        },
        content: "||<@231827708198256642>||"
    })
}