const { Command } = require('discord-akairo'); const attachment = require('../../utils/attachment'); const util = require('util'); const exec = util.promisify(require('child_process').exec); const downloader = require('../../utils/download'); const os = require('os'); const ffmpeg = require('fluent-ffmpeg'); 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: 'url', match: 'rest' }, { id: 'raw', match: 'flag', flag: ['--raw'] }, { id: 'noteblock', match: 'flag', flag: ['--noteblock'] }, { id: 'voice', match: 'flag', flag: ['--voice'] } ], 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 url; if (args.link) url = args.link.href; else url = await attachment(message); let input = `${os.tmpdir()}/${message.id}`; 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) { downloader(url, null, input) .on('error', (err) => { loadingmsg.delete(); return message.channel.send(err, { code: true }); }) .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 occured during the conversion, are you sure it is a valid file?'); }) .run(); }); } 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?'); }); } let option; if (args.noteblock) { option = '-c ./asset/timidity/config/noteblock.cfg'; } else if (args.voice) { option = '-c ./asset/timidity/config/voice.cfg'; } // midi to mp3 so we can listen from discord exec(`timidity ${output} ${option} -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;