sync-music-db

keep music metadata in sync with a sqlite database. watches a directory for changes, and updates a sqlite table with relevant id3 (or other metadata formats).

this module is intended to be used with media players, but is appropriate for anything that relies on a music library.

install

$ npm install sync-music-db sqlite

sqlite is a peerDependency. this module doesn't explicitly require it, but it takes a sqlite db instance in its constructor.

example

const SyncMusicDb = require('./');
const sqlite = require('sqlite');

(async () => {
    const db = await sqlite.open('./example.sqlite');
    const syncMusicDb = new SyncMusicDb({ db, dir: './test/_music' });

    await syncMusicDb.createTable();

    console.time('sync');

    syncMusicDb
        .on('ready', () => console.timeEnd('sync'))
        .on('add', track => console.log(`${track.title} added`))
        .on('remove', path => console.log(`${path} removed`))
        .on('error', err => console.error(err))
        .refresh();
})();

api

SyncMusicDb.TRACK_ATTRS

the columns in the tracks table.

[
    'path', 'mtime', 'title', 'artist', 'album', 'year', 'duration', 'track_no',
    'tags', 'is_vbr', 'bitrate', 'codec', 'container'
]

syncMusicDb = new SyncMusicDb({ db, dir, tableName = 'tracks', delay = 1000, ignoreExt = true })

create an EventEmitter to sync the specified dir directory to a sqlite db instance.

tableName specifies which table has SyncMusicDb.TRACK_ATTRS.

delay specifies how long to wait for file changes (in ms) before reading them.

ignoreExt specifies whether to ignore non-media extensions.

async syncMusicDb.createTable()

create the tracks table in the sqliteDb instance.

syncMusicDb.refresh()

do an initial sync with the specified dir and begin watching it for new changes.

async syncMusicDb.close()

stop syncing and watching dir.

syncMusicDb.on('synced', isSynced => {})

is sqliteDb up-to-date with dir?

syncMusicDb.on('ready', () => {})

the initial sync has finished (from a .refresh call).

syncMusicDb.on('add', track => {})

track has been added or updated.

syncMusicDb.on('remove', path => {})

path has been removed.

syncMusicDb.isReady

is syncMusicDb listening to live dir changes (after initial scan)?

syncMusicDb.isSynced

is all the metadata from dir stored in db?

license

LGPL-3.0+