Gruenbeck Softener SD21

Hi All,
I have recently installed a Gruenbeck SD21 water softener in my household. (

Unfortunatly it does not come with an local WebUI anymore, but uses the Gruenbeck Cloud which can be accessed via an Mobile App. I would like to integrate this into my openhab installation, however I can only find an JavaScript module for IOBroker ( and nothing for OpenHab. Is there an easy way to convert the IOBroker module to Openhab or some other way to make this running on OpenHab - maybe using the EXEC command?

Many thanks

Any updates here? Thanks