Applescript to quit nvALT when idle

nvALT-idle-quit

-- adapted from: https://culturedcode.com/forums/read.php?7,30174,30597


(*
save as 'stay open' Application and launch at startup
to run in background, change info.plist file to include
<key>LSBackgroundOnly</key>
<true/>
*)

global quit_after, check_every

set quit_after to 1200 -- seconds
set check_every to 30 -- seconds

-- keep dialogs below commented if info.plist has LSBackgroundOnly set to <true/>

(* display dialog "System Idle check is performed every " & check_every & " seconds. nvALT will be quit after " & quit_after / 60 & " minutes of system inactivity." *)

(* on reopen
display dialog "System Idle check is performed every " & check_every & " seconds. nvALT will be quit after " & quit_after / 60 & " minutes of system inactivity."
end reopen *)

on idle
  set idletime to do shell script "echo $((`ioreg -c IOHIDSystem | sed -e '/HIDIdleTime/ !{ d' -e 't' -e '}' -e 's/.* = //g' -e 'q'` / 1000000000))"
	if (idletime as integer) > quit_after then
		tell application "System Events"
			if ((name of processes) contains "nvALT") then
				tell application "nvALT" to quit
			end if
		end tell
	end if
	return check_every
end idle