-- Toggle redshift when viewing videos with mpv

if os.execute("pgrep -x redshift >/dev/null") ~= 0
then
   return
end

-- Consider that redshift is enabled when starting
rs_enabled = true

function rs_toggle()
	os.execute("pkill -x -USR1 redshift")
end

function rs_disable()
	if rs_enabled
	then
		rs_toggle()
		rs_enabled = false
		mp.msg.log("info", "Disabling redshift")
	end
end

function rs_enable()
	if not rs_enabled
	then
		rs_toggle()
		rs_enabled = true
		mp.msg.log("info", "Reenabling redshift")
	end
end

function rs_handler()
	if mp.get_property("video") ~= "no"
	then
		rs_disable()
	else
		rs_enable()
	end
end

mp.register_event("file-loaded", rs_handler)
mp.register_event("shutdown", rs_enable)