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/**************************************************************************
*
* DLAP Bot: A Discord bot that plays local audio tracks.
* (C) Copyright 2022
* Programmed by Andrew Lee
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
***************************************************************************/
import {
createAudioPlayer,
createAudioResource,
getVoiceConnection,
joinVoiceChannel,
VoiceConnectionStatus
} from '@discordjs/voice';
import { MessageEmbed } from 'discord.js';
import { readdirSync, readFileSync, writeFile } from 'node:fs';
// import config from './config.json' assert {type: 'json'}
const { voiceChannel, statusChannel, shuffle, txtFile } = JSON.parse(readFileSync('./config.json'));
export const player = createAudioPlayer();
export let audio;
export const files = readdirSync('music');
let fileData;
export let currentTrack;
export let playerState;
export let isAudioStatePaused;
let totalTrack = files.length;
export async function voiceInit(bot) {
bot.channels.fetch(voiceChannel).then(async channel => {
const connection = joinVoiceChannel({
channelId: channel.id,
guildId: channel.guild.id,
adapterCreator: channel.guild.voiceAdapterCreator
});
connection.on(VoiceConnectionStatus.Ready, async() => {
console.log('Ready to blast some beats!');
return (shuffle === true) ? await shufflePlaylist(bot) : await orderPlaylist(bot);
});
connection.on(VoiceConnectionStatus.Destroyed, () => {
console.log('Destroyed the beats...');
});
player.on('error', error => {
console.error(error);
nextAudio(bot);
});
player.on('idle', () => {
console.log('Beat has finished playing, now playing next beat...');
nextAudio(bot);
});
return connection.subscribe(player);
}).catch(e => { console.error(e); });
}
function shuffleArray(array) {
for (let i = array.length - 1; i > 0; i--) {
const j = Math.floor(Math.random() * (i + 1));
[array[i], array[j]] = [array[j], array[i]];
}
}
export async function orderPlaylist(bot) {
console.log('Playing beats by order...');
currentTrack = 0;
console.log(files);
audio = files[currentTrack];
return await playAudio(bot);
}
export async function shufflePlaylist(bot) {
console.log('Shuffling beats...');
shuffleArray(files);
console.log('Playing beats by shuffle...');
currentTrack = 0;
console.log(files);
audio = files[currentTrack];
return await playAudio(bot);
}
export async function nextAudio(bot) {
totalTrack--;
if (currentTrack >= totalTrack) {
console.log('All beats in the playlist has finished, repeating beats...');
return (shuffle === true) ? await shufflePlaylist(bot) : await orderPlaylist(bot);
} else {
currentTrack++;
audio = files[currentTrack];
return await playAudio(bot);
}
}
export async function previousAudio(bot, interaction) {
if (currentTrack <= 0) {
return await interaction.reply({ content: 'You are at the beginning of the playlist, cannot go further than this', ephemeral: true });
} else {
await interaction.reply({ content: 'Playing previous music', ephemeral: true });
player.stop();
currentTrack--;
audio = files[currentTrack];
return await playAudio(bot);
}
}
export async function inputAudio(bot, integer) {
const inputFiles = readdirSync('music');
audio = inputFiles[integer];
return await playAudio(bot);
}
export async function playAudio(bot) {
const resource = createAudioResource('music/' + audio);
player.play(resource);
console.log('Now playing: ' + audio);
playerState = 'Playing';
isAudioStatePaused = false;
audio = audio.split('.').slice(0, -1).join('.');
if (txtFile === true) {
fileData = 'Now Playing: ' + audio;
writeFile('./now-playing.txt', fileData, (err) => {
if (err) { console.log(err); }
});
}
const statusEmbed = new MessageEmbed()
.addField('Now Playing', `${audio}`)
.setColor('#0066ff');
const channel = bot.channels.cache.get(statusChannel);
if (!channel) return console.error('The status channel does not exist! Skipping.');
return await channel.send({ embeds: [statusEmbed] });
}
export async function destroyAudio(interaction) {
if (txtFile === true) {
fileData = 'Now Playing: Nothing';
writeFile('now-playing.txt', fileData, (err) => {
if (err) { console.log(err); }
});
}
audio = 'Not Playing';
playerState = 'Stopped';
isAudioStatePaused = true;
const connection = getVoiceConnection(interaction.guild.id);
if (VoiceConnectionStatus.Ready) {
player.stop();
return connection.destroy();
}
}
export function audioState() {
if (isAudioStatePaused === false) {
isAudioStatePaused = true;
playerState = 'Paused';
} else if (isAudioStatePaused === true) {
isAudioStatePaused = false;
playerState = 'Playing';
}
}
export async function stopBot(bot, interaction) {
const statusEmbed = new MessageEmbed()
.setAuthor({ name: bot.user.username, iconURL: bot.user.avatarURL() })
.setDescription(`That's all folks! Powering down ${bot.user.username}...`)
.setColor('#0066ff');
const channel = bot.channels.cache.get(statusChannel);
if (!channel) return console.error('The status channel does not exist! Skipping.');
await channel.send({ embeds: [statusEmbed] });
console.log(`Powering off ${bot.user.username}...`);
await destroyAudio(interaction);
bot.destroy();
return process.exit(0);
}
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