Take absolute value of net metered channel

Previous versions of this integration were taking the polarized value
when net metering was on. Switching to taking the net value resulted in
some installations starting to report negative values. While that may
have been technically correct, Home Assistant expects positive values to
be flowing into the energy dashboard, so we'll take the absolute value.

custom_components/greeneye_monitor/manifest.json

@@ -10,5 +10,5 @@
   "issue_tracker": "https://github.com/jkeljo/hacs-greeneye-monitor/issues",
   "loggers": ["greeneye"],
   "requirements": ["greeneye_monitor==4.1"],
-  "version": "2023.09.03"
+  "version": "2023.9.4"
 }

custom_components/greeneye_monitor/sensor.py

@@ -363,6 +363,8 @@ def extra_state_attributes(self) -> dict[str, Any] | None:
         """Return total wattseconds in the state dictionary."""
         if self._net_metering:
             watt_seconds = self._sensor.net_watt_seconds
+            if watt_seconds:
+                watt_seconds = abs(watt_seconds)
         else:
             watt_seconds = self._sensor.absolute_watt_seconds
 
@@ -425,7 +427,8 @@ def __init__(
     def native_value(self) -> float | None:
         """Return the total number of kilowatt hours measured by this channel."""
         if self._net_metering:
-            return self._sensor.net_kilowatt_hours
+            net_kwh = self._sensor.net_kilowatt_hours
+            return abs(net_kwh) if net_kwh else None
         else:
             return self._sensor.absolute_kilowatt_hours