class OrderStringAnalyzer
  attr_reader :order_string, :employee_recorder

  def initialize(order_string)
    @order_string = order_string
    @employee_recorder = EmployeeRecorder.new
    @execution_histories = []
  end

  def read_and_execute!
    @execution_histories =
      order_string.lines.map do |line|
        command, *args = line.split

        employee_recorder.public_send(command, *args)
      end
    nil
  end

  def execution_histories
    @execution_histories.compact
  end
end