local awful = require("awful")
local wibox = require("wibox")

--local get_volume_cmd = "wpctl get-volume @DEFAULT_AUDIO_SINK@ | sed 's/Volume: //;s/0*\\.//'"
--local set_volume_cmd = "wpctl set-volume @DEFAULT_AUDIO_SINK@ %d%%%s" -- will be formatted
local get_volume_cmd = "wpctl get-volume @DEFAULT_AUDIO_SINK@"

local widget = {
	textbox = wibox.widget.textbox()
}

local updating = false
function update_volume()
	if updating then
		return
	end
	awful.spawn.easy_async(get_volume_cmd, function(vol)
		updating = true
		vol = vol:sub(8) * 100 -- skip `Volume: ` whos len is 8
		widget.textbox:set_text(math.floor(vol))
		updating = false
	end)
end

-- NOTE pulseaudio-utils (pactl) is still required due to the dependence on the
-- `pactl subscribe` command. in the future it would be advantageous to replace
-- this. currently it is (probably) only really possible with dbus.
awful.spawn.with_line_callback("pactl subscribe", { stdout = function(stdout)
	--update_volume()
end })

update_volume()

return widget.textbox