Haha-Yes/commands/fun/midify.js

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const { Command } = require('discord-akairo');
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const attachment = require('../../utils/attachment');
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const util = require('util');
const exec = util.promisify(require('child_process').exec);
const downloader = require('../../utils/download');
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const os = require('os');
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const ffmpeg = require('fluent-ffmpeg');
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class midifyCommand extends Command {
constructor() {
super('midify', {
aliases: ['midify', 'wav2midi', 'w2m', 'mp32midi', 'm2m', 'sound2midi', 's2m'],
category: 'fun',
clientPermissions: ['SEND_MESSAGES', 'ATTACH_FILES'],
args: [
{
id: 'link',
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type: 'url',
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match: 'rest'
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},
{
id: 'raw',
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match: 'flag',
flag: ['--raw']
},
{
id: 'noteblock',
match: 'flag',
flag: ['--noteblock']
},
{
id: 'voice',
match: 'flag',
flag: ['--voice']
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}
],
description: {
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content: 'Transform the audio into midi --raw to get the .mid file',
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usage: '[link to video/music/whatever you want to be midi]',
examples: ['https://www.youtube.com/watch?v=kXYiU_JCYtU']
}
});
}
async exec(message, args) {
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let url;
if (args.link)
url = args.link.href;
else
url = await attachment(message);
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let input = `${os.tmpdir()}/${message.id}`;
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let input2 = `${os.tmpdir()}/${message.id}.wav`;
let output = `${os.tmpdir()}/${message.id}.mid`;
let output2 = `${os.tmpdir()}/${message.id}.mp3`;
let loadingmsg = await message.channel.send('Processing (this can take some time) <a:loadingmin:527579785212329984>');
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if (url) {
downloader(url, null, input)
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.on('error', (err) => {
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loadingmsg.delete();
return message.channel.send(err, { code: true });
})
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.on('end', output => {
// Convert to wav
ffmpeg()
.input(output)
.output(input2)
.on('end', () => {
midify();
})
.on('error', (err, stdout, stderr) => {
console.error(`${err}\n${stdout}\n${stderr}`);
return message.channel.send('Oh no! an error has occurred during the conversion, are you sure it is a valid file?');
})
.run();
});
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} else {
return message.channel.send('You need a valid video link!');
}
function midify() {
// wav to midi
exec(`waon -i ${input2} -o ${output}`)
.then(() => {
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if (args.raw) {
loadingmsg.delete();
return message.channel.send({files: [output]})
.catch(err => {
console.error(err);
loadingmsg.delete();
return message.channel.send('On no! an error just occurred! perhaps the file is too big?');
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});
}
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let option;
if (args.noteblock) {
option = '-c ./asset/timidity/config/noteblock.cfg';
} else if (args.voice) {
option = '-c ./asset/timidity/config/voice.cfg';
}
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// midi to mp3 so we can listen from discord
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exec(`timidity ${output} ${option} -Ow -o - | ffmpeg -i - -acodec libmp3lame -ab 64k ${output2}`)
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.then(() => {
loadingmsg.delete();
return message.channel.send({files: [output2]})
.catch(err => {
console.error(err);
loadingmsg.delete();
return message.channel.send('On no! an error just occurred! perhaps the file is too big?');
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});
})
.catch(err => {
console.error(err);
return message.channel.send('Oh no! an error has occurred during the conversion, are you sure it is a valid file?');
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});
})
.catch(err => {
console.error(err);
return message.channel.send('Oh no! an error has occurred during the conversion, are you sure it is a valid file?');
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});
}
}
}
module.exports = midifyCommand;