bot.js

const Discord = require('discord.js');
const client = new Discord.Client();
const config = require("./config.json");
const ytdl = require("ytdl-core");

function getRandomIntInclusive(min, max) {
    min = Math.ceil(min);
    max = Math.floor(max);
    return Math.floor(Math.random() * (max - min + 1)) + min; //The maximum is inclusive and the minimum is inclusive
}

function mentionRandomPerson(message, onlyOnline){
    let guild = message.guild;
    let members = guild.members;
    let gm = members.random(1)[0].user;

    while (true){
        if (gm.bot) {
            console.log("Chose " + gm.username + ", but they're a bot.");
            members.delete(gm.id);
        }
        else if (gm.presence.status === "offline" && onlyOnline) {
            console.log("Chose " +gm.username+", but they're offline.");
            members.delete(gm.id);
        }
        else if (gm.presence.status === "dnd" && onlyOnline) {
            console.log("Chose " +gm.username+", but they're not to be disturbed.");
            members.delete(gm.id);
        }
        else if (gm.equals(message.author)) {
            console.log("Chose " +gm.username+", but they're the one who requested someone.");
            members.delete(gm.id);
        }
        else {
            console.log("Chose "+gm.username+"!");
            console.log();
            message.channel.send("<@" + gm.id + ">");
            break;
        }
        if (members.size === 0){
            console.log("Nobody to send the message to!");
            console.log();
            break;
        }
        gm = members.random(1)[0].user;
    }
}

function queueAudio(video, message){
    let vC = undefined;
    let info = undefined;

    try {
        config.music.queue.push(ytdl(video, {filter: 'audioonly'}));
    }
    catch(err){
        message.channel.send("That was either an invalid video or a playlist.");
    }

    if (config.music.queue.length > 1 || config.music.playing) {
        ytdl.getBasicInfo(video).then(v => {
            info = v.player_response.videoDetails.title.toString();
            message.channel.send("Queued " + info + ".");
            config.music.titles.push(info)
        });
    }
    else {
        ytdl.getBasicInfo(video).then( v => {
            info = v.player_response.videoDetails.title.toString();
            message.channel.send("Playing " + info + ".")});
    }
    //debugger;
    //console.log(config.music.playing);
    if (message.member.voiceChannel) {
        message.member.voiceChannel.join();
        if (!config.music.playing) {
            vC = client.voiceConnections.first();
            //
            jukeBox(vC);
        }
    } else {
        message.channel.send("You need to join a voice channel first!");
    }

}
function endOfStream(broadcast) {
    console.log("Stream ended, playing next song.");
    config.music.playing = false;
    jukeBox(broadcast);
}

function jukeBox(broadcast){
    if (config.music.queue.length === 0) { config.music.playing = false; return;}
    else if (!config.music.playing){
        config.music.playing = true;
        //console.log(config.music.playing);
        broadcast.playStream(config.music.queue.shift()).on("end", v => { endOfStream(broadcast);});
        broadcast.dispatcher.setVolume(config.music.volume/100.0);
        config.music.titles.shift();
    }
    return;
}

client.on('message', async message => {
    //debugger
    if (message.author.bot) return; //no bots

    if (message.content.indexOf(config.settings.prefix) === 0) {
        const args = message.content.slice(config.settings.prefix.length).trim().split(/ +/g);
        const command = args.shift().toLowerCase();

        if (command === "help"){
            let outMessage = "";
            outMessage += "Commands:```";
            if (config.settings.useVoice) {
                outMessage += (config.settings.prefix + "play: Plays a youtube link.\n");
                outMessage += (config.settings.prefix + "pause: Pauses the player.\n");
                outMessage += (config.settings.prefix + "resume: Resumes playback.\n");
                outMessage += (config.settings.prefix + "skip: Skips the current song.\n");
                outMessage += (config.settings.prefix + "leave: Leaves the voice channel.\n");
            }
            if(config.settings.useMemes){
                outMessage += (config.settings.prefix + "meme: Sends a meme in the channel\n");
            }
            outMessage += (config.settings.prefix + "anyone: Mentions anyone, even if they're offline.\n");
            outMessage += (config.settings.prefix + "someone: Mentions only people who are online.```");
            message.channel.send(outMessage);
        }

        if (config.settings.useMemes && command === "meme") {
            message.channel.send('Here\'s your meme:', {file: config.settings.memes + 'meme('+getRandomIntInclusive(1,config.settings.memeCount)+').jpg'});
            return;
        }

        if (config.settings.useVoice) {
            if (command === "play") {
                let fileToPlay = "";
                for (let ii in args){
                    fileToPlay += args[ii];
                }
                queueAudio(fileToPlay, message);
                //message.channel.send("Playing "+fileToPlay+".");
                if (config.settings.logging) console.log(message.member.nickname +" requested the file "+fileToPlay);
                return;
            }
            else if (command === "pause") {
                client.voiceConnections.first().dispatcher.pause();
                message.channel.send("Paused. Use resume to continue playing.")
            }
            else if (command === "resume") client.voiceConnections.first().dispatcher.resume();
            else if (command === "skip") client.voiceConnections.first().dispatcher.end();
            else if (command === "leave") {
                let vc = message.member.voiceChannel;
                vc.leave();
                return;
            }
            else if (command === "volume") {
                let volume = args[0];
                config.settings.volume = volume;
                client.voiceConnections.first().dispatcher.setVolume(volume/100.0);
                if (volume > 100) message.channel.send("Volume set to "+volume+". `Warning: the audio may clip at this level.`");
                else message.channel.send("Volume set to "+volume+".");
                if (config.settings.logging) console.log(message.member.nickname +" changed the volume to " + config.settings.volume);
                return;
            }
            else if (command === "queue") {
                let outMessage = "";
                outMessage += "Queue:\n\n";
                for (let ii = 0; ii < config.music.titles.length; ii++) {
                    outMessage += ((ii + 1).toString() + ": " + config.music.titles[ii] + "\n");
                }
                message.channel.send(outMessage);
            }
            else {}
        }

        if (command === "anyone"){
            mentionRandomPerson(message, false);
            return;
        }
        else if (command === "someone"){
            mentionRandomPerson(message, true);
            return;
        }
        if (command === "prefix"){
            config.settings.prefix = args[0];
            return;
        }
    }
    else {
        let msg = message.content.toLowerCase();

        if (msg.includes("##")) return;

        if (message.isMentioned(client.users.get("435060306197086219"))) message.channel.send("That's me!");

        if (config.settings.useRawr) {
            if (msg.includes("rawr")) message.channel.send('XD');
            else if (msg.includes("owo")) message.channel.send('What\'s this?');
        }

        if (config.settings.useGaming) {
            if (msg.includes("fortnite")) message.channel.send('Fortnite is not relevant\.');
            else if (msg.includes("gmod") || msg.includes("garry\'s mod") || msg.includes("garrys mod") || msg.includes("g mod")) message.channel.send('Is it really Garry\'s Mod?');
            else if (msg.includes("factorio") && msg.includes("satis")) message.channel.send('The unholy combination');
            else if (msg.includes("satisfactory")) message.channel.send("Factorio 2: Electric Boogaloo");
            else if (msg.includes("factorio")) message.channel.send("Good game");
            else if (msg.includes("apex")) message.channel.send('Is Apex the *peak* of gaming?');
        }
    }
});

client.login(config.settings.token);

client.on('ready', () => {
    console.log(`Bot has started, with ${client.users.size} users, in ${client.channels.size} channels of ${client.guilds.size} servers.`);
    console.log('Using memes: '+config.settings.useMemes);
    console.log('Using gaming: '+config.settings.useGaming);
    console.log('Using voice: '+config.settings.useVoice);
    console.log('Using rawr: '+config.settings.useRawr);
    console.log('Using logging: '+ config.settings.logging);
    console.log();
    client.user.setActivity('God', { type: 'PLAYING' });
});

client.on("guildCreate", guild => {
    // This event triggers when the bot joins a guild.
    console.log(`New server joined: ${guild.name} (id: ${guild.id}). This guild has ${guild.memberCount} members!`);
});

client.on("guildDelete", guild => {
    // this event triggers when the bot is removed from a guild.
    console.log(`I have been removed from: ${guild.name} (id: ${guild.id})`);
});