Support for heat pumps

[rappenze]

The current implementation of PyViCare supports only gas heatings. The ViCare API is available as well for heat pumps from Viessmann, but there are some differences in the available API methods.

This pull request does the following:

• Refactoring of the ViCareSession into ViCareSession and ViCareService, where ViCareService contains the logic to access the API (this is the common code shared by gas heating and heat pumps) and the ViCareSession which contains the API methods for gas heatings. ViCareSession is 100% compatible with the previous Version.

• New class ViCareHeatPumpSession which contains the API methods for heat pumps.

Would be great if you can accept this pull request and push to PyPi.org, the I will do next step by creating a pull request to https://github.com/oischinger/ha_vicare so we can support it as well in home assistant.

Code tested for heat pump only as I do not have access to a Viessmann gas heating.

[michelde]

I have a Vitocal 333-G BWT 331.B08 and it also works with mine. Great enhancement.

[vandenberghev]

Hi @somm15, any idea when you could integrate this PR and update the PyPI package?

[somm15]

I'll have a look tonight. Sorry, I didn't receive any notification for the PR...

[somm15]

I did merge your PR.
Thanks for the refactoring.

However, I had to refactor quite a lot. 90% of the code was common with the gaz boiler.
So the new structure is:

• PyViCareDevice.py contains the class Device
• PyViCareGazBoiler extends the Device class and adds gaz specific features, the class in named GazBoiler
• PyViCareHeatPump extends the Device class and adds heat pump specific features, the class in named HeatPump

ViCareSession is just there because of legacy and is deprecated.

Naming of classes is now a little more coherent. I don't plan changing it in the future.
Note that you now have to import using:

from PyViCare.PyViCareDevice import Device
from PyViCare.PyViCareGazBoiler import GazBoiler
from PyViCare.PyViCareService import ViCareService
from PyViCare.PyViCare import ViCareSession

In the future, I plan to make:
Service --> Installations --> Gateways --> Devices (HeatPump or GazBoiler)
Just initiating the service will create the sub components. This will be more convenient for big installations.