rename.rb

class DirectoryRenamer
  def initialize(file)
    @base_name = File.basename(file)
  end
  
  def file_name_is_valid(base_name)
    @base_name.start_with?('11') &&
    @base_name.start_with?('--') &&
    @base_name.include?(" ") &&
  end

  def get_file_full_name(base_name)
    no_dash   = @base_name.gsub('-', ' ')
    no_dash.split(/ /)[0..1].join(' ')
  end
  
  def rename_file(full_name)
    begin
      File.rename(@base_name, full_name)
      puts "Renaming #{@base_name} to #{full_name}"
    rescue
      print "File #{@base_name} is in use and was skipped."
    end
  end
end

def rename_all
  dir = Dir.open(__dir__)
  puts "Renaming folders..."
  
  dir.each do |file|
    renamer = DirectoryRenamer.new(file)
    
    next unless File.directory?(file)
    next unless file_name_is_valid(base_name)
    
    full_name = renamer.get_file_full_name(base_name)
    rename_file(full_name)
  end
end

rename_all