# Copyright (C) 2012-2024 Zammad Foundation, https://zammad-foundation.org/

# Classes that extend this module need a PREFIX constant.
module Sequencer::Mixin::PrefixedConstantize
  # Returns the class for a given name String independend of the prefix.
  #
  # @param [String] sequence the name String for the requested class
  #
  # @example
  #  Sequencer::Sequence.constantize('ExampleSequence')
  #  #=> Sequencer::Sequence::ExampleSequence
  #
  # @example
  #  Sequencer::Unit.constantize('Sequencer::Unit::Example::Unit')
  #  #=> Sequencer::Unit::Example::Unit
  #
  # @return [Object] the class for the given String
  def constantize(name_string)
    namespace(name_string).constantize
  end

  # Returns the complete class namespace for a given name String
  # independend of the prefix.
  #
  # @param [String] sequence the name String for the requested class namespace
  #
  # @example
  #  Sequencer::Sequence.namespace('ExampleSequence')
  #  #=> 'Sequencer::Sequence::ExampleSequence'
  #
  # @example
  #  Sequencer::Unit.namespace('Sequencer::Unit::Example::Unit')
  #  #=> 'Sequencer::Unit::Example::Unit'
  #
  # @return [String] the class namespace for the given String
  def namespace(name_string)
    prefix = const_get(:PREFIX)
    return name_string if name_string.start_with?(prefix)

    "#{prefix}#{name_string}"
  end
end