module RoomService

# File lib/room_service.rb, line 29
def const_missing(const_name)
  catch(:found) do
    standard_require_path = ActiveSupport::Inflector.underscore(const_name.to_s)
    nonstandard_but_annoyingly_common_require_path = standard_require_path.gsub(/_/, '')

    throw :found if try_require_for_const(const_name, standard_require_path)
    throw :found if try_require_for_const(const_name, nonstandard_but_annoyingly_common_require_path)

    if try_to_install_gem(standard_require_path) || try_to_install_gem(nonstandard_but_annoyingly_common_require_path)
      throw :found if try_require_for_const(const_name, standard_require_path)
      throw :found if try_require_for_const(const_name, nonstandard_but_annoyingly_common_require_path)
    end

    super(const_name)
  end

  const_get(const_name)
rescue Exception
  super(const_name)
end

# File lib/room_service.rb, line 5
def try_require_for_const(const_name, path)
  require path

  const_defined?(const_name)
rescue Exception
  false
end

# File lib/room_service.rb, line 13
def try_to_install_gem(gem_name)
  gems_installed = Gem.install(gem_name)

  gem = gems_installed.first
  gem_version = gem.version

  gemfile_entry = "gem '#{gem_name}', '#{gem_version}'"
  File.open('Gemfile', 'a') { |file| file.write "\n#{gemfile_entry}" }

  gem.activate rescue nil

  system 'bundle > /dev/null 2>&1'
rescue Exception
  false
end