const { Command } = require('discord-akairo'); const util = require('util'); const exec = util.promisify(require('child_process').exec); const youtubedl = require('youtube-dl'); const os = require('os'); 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', type: 'string', }, { id: 'raw', type: 'flag', flag: '--raw' } ], description: { content: 'Transform the audio into midi --raw to get the .mid file', usage: '[link to video/music/whatever you want to be midi]', examples: ['https://www.youtube.com/watch?v=kXYiU_JCYtU'] } }); } async exec(message, args) { let Attachment = (message.attachments).array(); let url = args.link; // Get attachment link if (Attachment[0] && !args.link) { url = Attachment[0].url; } let input = `${os.tmpdir()}/${message.id}.mp4`; 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) '); if (url) { return youtubedl.exec(url, ['--format=mp4', '-o', input], {}, function(err) { if (err) { console.error(err); loadingmsg.delete(); return message.channel.send('An error has occured, I can\'t download from the link you provided.'); } else { // Convert to wav exec(`ffmpeg -i ${input} ${input2}`) .then(() => { midify(); }) .catch(err => { console.error(err); return message.channel.send('Oh no! an error has occured during the conversion, are you sure it is a valid file?'); }); } }); } else { return message.channel.send('You need a valid video link!'); } function midify() { // wav to midi exec(`waon -i ${input2} -o ${output}`) .then(() => { 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 occured! perhaps the file is too big?'); }); } // midi to mp3 so we can listen from discord exec(`timidity ${output} -Ow -o - | ffmpeg -i - -acodec libmp3lame -ab 64k ${output2}`) .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 occured! perhaps the file is too big?'); }); }) .catch(err => { console.error(err); return message.channel.send('Oh no! an error has occured during the conversion, are you sure it is a valid file?'); }); }) .catch(err => { console.error(err); return message.channel.send('Oh no! an error has occured during the conversion, are you sure it is a valid file?'); }); } } } module.exports = midifyCommand;