class ECMS
  # This method will add a skeleton erv to all air loops if requested.
  def apply_erv_ecm(model:, erv_package: nil)
    # If erv is nil.. do nothing.
    return if erv_package.nil? || erv_package == 'none' || erv_package == 'NECB_Default'

    erv_info = @standards_data['tables']['erv']['table'].detect { |item| item['erv_name'] == erv_package }
    # Check if we were able to get data.
    if erv_info.nil?
      # Get name of ERVs in erv.json.
      valid = @standards_data['tables']['erv']['table'].map { |x| x['erv_name'] }
      # tell user.
      raise("ERV package name #{erv_package} does not exist. must be #{valid} /n Stopping.")
    end

    # remove all existing ERVs
    model.getHeatExchangerAirToAirSensibleAndLatents.each(&:remove) if erv_info['application'] == 'Add_ERVs_To_All_Airloops'
    # add ervs
    # Adds default erv to all air_loops. This will be changed in the set efficiency methods.
    model.getAirLoopHVACs.each { |air_loop| air_loop_hvac_apply_energy_recovery_ventilator(air_loop, nil) } if erv_info['application'] == 'Add_ERVs_To_All_Airloops'
  end

  # This method will set the properties of the ERV that was added above. Must be run after the standard efficiency is complete as this will overwrite
  # those values. See data/erv.json to view/add different erv packages.
  def apply_erv_ecm_efficiency(model:, erv_package: nil)
    # If erv is nil.. do nothing.
    return if erv_package.nil? || erv_package == 'none' || erv_package == 'NECB_Default'

    # This calls the NECB2011 implementation of the method.
    model.getHeatExchangerAirToAirSensibleAndLatents.each { |erv| heat_exchanger_air_to_air_sensible_and_latent_apply_effectiveness(erv, erv_package) }
  end
end