'use strict'; const db = require('../db'); module.exports = { index: (session, cb) => { db.models.song.find({}, (err, songs) => { if (err) throw err; cb(songs); }); }, update: (session, song, cb) => { db.models.song.findOneAndUpdate({ id: song.id }, song, { upsert: true }, (err, updatedSong) => { if (err) throw err; cb(updatedSong); }); }, remove: (session, song, cb) => { db.models.song.find({ id: song.id }).remove().exec(); } };