I've added system buttons to config.yaml to turn my printers on/off.
There's actually more commands but this shows what's needed for the question.
- action: printer power on
command: sudo /usr/bin/hub-ctrl -h 1 -P 2 -p 1
name: Printer On
- action: printer power off
command: sudo /usr/bin/hub-ctrl -h 1 -P 2 -p 0
confirm: You are about to power off the printer.
name: Printer Off
I'm using the confirm so I don't accidentally shut the printer down while it's printing. Is it possible to create a custom command that only gives the confirmation dialog if the printer is currently printing?