class Rubycritic::RevisionComparator

def analysed_files_before
  serializer = Serializer.new(revision_file)
  if File.file?(revision_file)
    serializer.load
  else
    analysed_files = FilesInitializer.init(["."])
    @source_control_system.travel_to_head do
      AnalysersRunner.new(analysed_files, @source_control_system).run
    end
    serializer.dump(analysed_files)
    analysed_files
  end
end

def initialize(analysed_files, source_control_system)
  @analysed_files_now = analysed_files
  @source_control_system = source_control_system
end

def revision_file
  @revision_file ||= File.join(
    ::Rubycritic.configuration.root,
    SNAPSHOTS_DIR_NAME,
    @source_control_system.head_reference
  )
end

def set_statuses
  SmellsStatusSetter.set(
    analysed_files_before.flat_map(&:smells),
    @analysed_files_now.flat_map(&:smells)
  )
end