class IDRAC::Client

def get_firmware_version
  response = authenticated_request(:get, "/redfish/v1/Managers/iDRAC.Embedded.1?$select=FirmwareVersion")
  
  if response.status == 200
    begin
      data = JSON.parse(response.body)
      return data["FirmwareVersion"]
    rescue JSON::ParserError
      raise Error, "Failed to parse firmware version response: #{response.body}"
    end
  else
    # Try again without the $select parameter for older firmware
    response = authenticated_request(:get, "/redfish/v1/Managers/iDRAC.Embedded.1")
    
    if response.status == 200
      begin
        data = JSON.parse(response.body)
        return data["FirmwareVersion"]
      rescue JSON::ParserError
        raise Error, "Failed to parse firmware version response: #{response.body}"
      end
    else
      raise Error, "Failed to get firmware version. Status code: #{response.status}"
    end
  end
end