Organize MP3s Ruby Script

_organize_mp3s.rb

# Organize MP3s by Brett Chalupa
#
# Pre-reqs:
# 1. Ruby v2+
# 2. gem install id3tag
#
# This script loops through a directory of mp3 files, like a an archive
# download from YouTube Music, and organizes them into the following structure
# in the folder:
#
# ARTIST/ALBUM/00 - TITLE.mp3
#
# Use https://musicbrainz.org to fetch metadata en masse for files if it's
# lacking in your archive.
#
# Run the script in the directory of your mp3s with:
#
# ruby _organize_mp3s.rb
#
# If two files have the same name and MP3 metadata for artist, album, and track,
# they'll get overwritten, thus cleaning up duplicates.
#
# Problematic file and directory chars are also stripped out.
#

require "id3tag"
require "fileutils"

Dir.each_child(".") do |child|
  next if File.directory?(child)
  next unless child =~ /.+(.mp3)$/i

  begin
    file = File.open(child, 'rb')
    tag = ID3Tag.read(file)

    if tag.artist.nil? || tag.album.nil? || tag.title.nil?
      puts "Skipping #{child}, missing metadata"
      next
    end

    def char_scrub(str)
      str.gsub(/\!|\(|\)|\'|\//,'_')
    end

    dir = "#{char_scrub(tag.artist)}/#{char_scrub(tag.album)}"
    FileUtils.mkdir_p(dir)
    name = ""
    if tag.track_nr
      name += "#{tag.track_nr.split("/").first.rjust(2, "0")} - "
    end
    name = "#{name}#{tag.title}.mp3"
    FileUtils.mv(child, "#{dir}/#{char_scrub(name)}")
  rescue => e
    puts "🚨 rescued error"
    puts e
    next
  end
end