Add a file name to images.(ImageMagick)

add_filename.rb

def get_files_from_ARGV(recursive: true)
  files = ARGV.map do |path|
    path = File.expand_path(path)

    if File.directory?(path)
      if recursive
        Dir.glob(File.join(path, '**', '*'))
      else
        Dir.glob(File.join(path, '*'))
      end

    elsif File.file?(path)
      path
    else
      puts("Not exists file: #{path}")
    end
  end

  raise('ARGV empty') if ARGV.empty?

  files.flatten.compact.sort.reject { |e| File.directory?(e) }
end

def add_file_name
  font_path = '/System/Library/Fonts/Helvetica.ttc'
  pointsize = '30'

  get_files_from_ARGV.each do |file|
    puts(file)
    file_name = File.basename(file, '.*')
    outfile = File.join(File.dirname(file), file_name + '-caption' + File.extname(file))

    cmd = ['convert', '-font', font_path, '-pointsize', pointsize,
           '-gravity', 'south', '-annotate', '0' , file_name, file, outfile]
    system(*cmd)
  end
end

add_file_name