Draw weapon while out of combat, if reticle sits on a hostile enemy

[SlippyCheeze]

I keep finding myself in the annoying "git gud" position of forgetting to draw my staff before I attack a hostile, so my first light/ability combo only fires off the later since the click pulls out the staff but doesn't attack.

I've had a look around, but can't find anything that delivers what I would prefer, which is:

While out of combat, if my reticle sits on a hostile target for a reasonable time (thinking 0.5 to 1 second) then I will automatically draw my weapon, if it is not already out.

Is there an addon that does this already, which I have missed?