Fix polybar battery module

Signed-off-by: Severin Kaderli <severin@kaderli.dev>

system/.config/polybar/config

@@ -191,7 +191,7 @@ interval = 60
 [module/battery]
 type = internal/battery
 full-at = 99
-battery = BAT0
+battery = ${env:POLYBAR_BATTERY}
 adapter = AC
 time-format = %H:%M
 

system/.config/polybar/launch

@@ -18,6 +18,11 @@ killall -q polybar
 # Wait until the processes have been shut down
 while pgrep -x polybar >/dev/null; do sleep 1; done
 
+if [ "${IS_WORK}" = "1" ]; then
+    POLYBAR_BATTERY="BAT1"
+else
+    POLYBAR_BATTERY="BAT0"
+fi
 
 # Launch bar1 and bar2
 polybar top &