[Feature Request] Non-interactive mode

[anna-oake]

Thanks for the awesome tool!
I'm using it with my NixOS-based couch gaming PC.

I'd like to request a non-interactive mode.
The use case for me is to set it up as a oneshot systemd service that would run in background on each system boot.
This way link keys would always stay in sync without having to manually run the program.

It could be done with either environment variables (comfy to use in a systemd service):

• LINKWINBT_CONTROLLER=DE:AD:BE:EF:13:37
• LINKWINBT_DEVICE=B0:0B:CA:FE:69:67

Or via cmdline args, the same way as with -dry:
linkwinbt -controller DE:AD:BE:EF:13:37 -device B0:0B:CA:FE:69:67

The most important bit here is to allow passing all in these parameters, especially for device.
When all is passed, linkwinbt would iterate over all controllers/devices and sync their keys.

In my personal use case, non-interactive support for a single specific controller and all devices would be enough.
Some people might want all for controllers too.
Some might find it useful to be able to specify a fixed list comma-separated -controllers and -devices as well.

Go is my primary language and I would do a PR, but I'm not sure which way you'd prefer this to be implemented, if at all.

Thank you!

[vvoland]

Nice to hear it's useful! ❤️

The feature sounds good! I think both cmdline args and env variables are fine. They probably should be mutually exclusive to avoid confusion when both env var and cmd arg specify different values.