Check if it's needed to pass the gateway instance to a device implementation

[Rico]

At the moment we are using the information about the gateway inside the device class to calculate the proper gateway header etc. From a software design PoV (abstraction) this is bad, because the device should not care about what gateway is being used to control it.

pyBrematic/pyBrematic/devices/brennenstuhl/RCS1000N.py

Lines 72 to 77 in fd7e45e

 if isinstance(gateway, BrennenstuhlGateway): 
     head = self.headBSGW 
     tail = self.tailBSGW 
 elif isinstance(gateway, IntertechnoGateway): 
     head = self.headITGW 
     tail = self.tailITGW 

Now since I am looking closely at the PowerSwitch code and seeing that they have implemented it the same way, I am very curious if it would work the same by extracting this code into the gateway class.

While checking the PowerSwitch code I also noticed, that several header fields are set depending on the device itself in combination with a certain gateway. Now I am not sure if those variables are exchangeable and changing them wouldn't mess up everything, so I am very cautious about this issue.

Example:

$ grep -r "sSpeedConnAir = \""
bat/RC3500_A_IP44_DE.java:    private String sSpeedConnAir = "14";
bat/RC_AAA1000_A_IP44_Outdoor.java:    private String sSpeedConnAir = "14";
brennenstuhl/RCS1000NComfort.java:    private String sSpeedConnAir = "14";
brennenstuhl/RCS1044NComfort.java:    private String sSpeedConnAir = "14";
elro/AB440D_200W.java:    private String sSpeedConnAir = "14";
elro/AB440D_300W.java:    private String sSpeedConnAir = "14";
elro/AB440ID.java:    private String sSpeedConnAir = "14";
elro/AB440L.java:    private String sSpeedConnAir = "14";
elro/AB440S.java:    private String sSpeedConnAir = "14";
elro/AB440WD.java:    private String sSpeedConnAir = "14";
intertechno/CMR1000.java:    private String sSpeedConnAir = "140";
intertechno/IT1500.java:    private String sSpeedConnAir = "140";
intertechno/ITR1500.java:    private String sSpeedConnAir = "140";
mumbi/m_FS300.java:    private String sSpeedConnAir = "14";
pollin_electronic/Set2605.java:    private String sSpeedConnAir = "14";
rev/Ritter.java:    private String sSpeedConnAir = "14";
rev/Telecontrol.java:    private String sSpeedConnAir = "16";
universal/HX2262_Comp.java:    private String sSpeedConnAir = "140";
vivanco/FSS31000W.java:    private String sSpeedConnAir = "14";

And

$ grep -r "headITGW = \""
bat/RC3500_A_IP44_DE.java:    private String headITGW = "0,0,10,11200,350,26,0,";
bat/RC_AAA1000_A_IP44_Outdoor.java:    private String headITGW = "0,0,10,11200,350,26,0,";
brennenstuhl/RCS1000NComfort.java:    private String headITGW = "0,0,10,11200,350,26,0,";
brennenstuhl/RCS1044NComfort.java:    private String headITGW = "0,0,10,11200,350,26,0,";
elro/AB440D_200W.java:    private String headITGW = "0,0,10,11200,350,26,0,";
elro/AB440D_300W.java:    private String headITGW = "0,0,10,11200,350,26,0,";
elro/AB440ID.java:    private String headITGW = "0,0,10,11200,350,26,0,";
elro/AB440L.java:    private String headITGW = "0,0,10,11200,350,26,0,";
elro/AB440S.java:    private String headITGW = "0,0,10,11200,350,26,0,";
elro/AB440WD.java:    private String headITGW = "0,0,10,11200,350,26,0,";
intertechno/CMR1000.java:    private String headITGW = "0,0,6,11125,89,26,0,";
intertechno/IT1500.java:    private String headITGW = "0,0,6,11125,89,26,0,";
intertechno/ITR1500.java:    private String headITGW = "0,0,6,11125,89,26,0,";
mumbi/m_FS300.java:    private String headITGW = "0,0,10,11200,350,26,0,";
pollin_electronic/Set2605.java:    private String headITGW = "0,0,10,11200,350,26,0,";
rev/Ritter.java:    private String headITGW = "0,0,10,11200,350,26,0,";
rev/Telecontrol.java:    private String headITGW = "0,0,10,11200,350,26,0,";
universal/HX2262_Comp.java:    private String headITGW = "0,0,6,11125,89,26,0,";
vivanco/FSS31000W.java:    private String headITGW = "0,0,6,11200,350,26,0,";