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#!/usr/bin/env ruby
# frozen_string_literal: true
require 'pathname'
require 'open3'
# Renames music files in a directory according to the file's tags.
# Expects two arguments:
# - Path to the zip file with music files.
# - Music directory to extract songs into.
class Song
attr_reader :title, :track, :extension
def initialize(extension)
@extension = extension
end
def title=(title)
@title = title.strip
end
def track=(track)
@track = track.strip.split('/').first.rjust(2, '0')
end
def to_s
@track + ' - ' + @title + @extension
end
end
def find_unnamed_directory(parent_path)
parent_path.children.filter { |child| child.basename.to_s.start_with? '_' }.first
end
def extract_and_rename_archive(album_archive, music_directory)
artist_name, album_name = album_archive.basename('.zip').to_s.split(' - ')
system 'unzip', '-d', music_directory.to_path, album_archive.to_path, exception: true
artist_path = music_directory + artist_name
album_path = artist_path + album_name
source_artist_path = find_unnamed_directory music_directory
if artist_path.exist?
find_unnamed_directory(source_artist_path).rename album_path
source_artist_path.unlink
else
source_artist_path.rename artist_path
find_unnamed_directory(artist_path).rename album_path
end
album_path
end
def probe_song(song_path)
song = Song.new song_path.extname
Open3.popen3 'ffprobe', song_path.to_s do |_stdin, _stdout, stderr, _wait_pid|
while (line = stderr.gets)
key, value = line.split ':'
next if value.nil?
case key.strip.downcase
when 'title'
song.title = value if song.title.nil?
when 'track'
song.track = value if song.track.nil?
end
end
end
song
end
album_archive = Pathname.new ARGV[0]
music_directory = Pathname.new ARGV[1]
metadata = {}
album_path = extract_and_rename_archive album_archive, music_directory
Dir.each_child album_path do |filename|
song_path = album_path + filename
metadata[song_path] = probe_song(song_path).to_s
end
metadata.each_pair do |from, to|
File.rename(from, album_path + to)
end
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