AwesomeWM Progressbar Volume Changer

awesome-volume.sh

#!/bin/bash

STEP="10" 
UNIT="%"  

SETVOL="/usr/bin/amixer -q sset Master"
STATE=$(amixer get Master | grep Left | egrep 'Playback.*?\[o' | egrep -o '\[o.+\]')

case "$1" in
    "up")
        if [[ $STATE == '[off]' ]]; then
            $SETVOL unmute
        fi
        $SETVOL $STEP$UNIT+
        ;;
  "mute")
        $SETVOL toggle
        ;;
  "down")
        $SETVOL $STEP$UNIT-
        ;;
esac

STATE=$(amixer get Master | grep Left | egrep 'Playback.*?\[o' | egrep -o '\[o.+\]')
VOLUME=$(amixer get Master | grep 'Front Left:' | grep -E -o "[0-9]+%" | tr -d %)

if [[ $VOLUME == 0 ]]; then
          ##echo 'volnotiicon="/usr/share/awesome/icons/noti/volbar/bar_00.png"' | awesome-client
        echo "volnoti('Volume', '🔈 0%', '□□□□□□□□□□')" | awesome-client
else
        ICON='🔉'
        if [[ $STATE == '[off]' ]]; then
            ICON='🔇'
        fi
        COUNT=$(echo "$VOLUME / 10 - 1" | bc)
        PROGRESS=""
        for (( i=0; i<10; i++))
        do
            if [ "$COUNT" -ge "$i" ]; then
                PROGRESS="$PROGRESS■"
            else
                PROGRESS="$PROGRESS□"
            fi
        done
        echo $VOL $PROGRESS
        echo "volnoti('Volume', '$ICON $VOLUME%', '$PROGRESS')" | awesome-client
fi

exit 0

rc.lua

-- Notifiction 
-- Add this to somewhere in beginning of your rc.lua
function closeLastNoti(title)
    screen = mouse.screen
    for p,pos in pairs(naughty.notifications[screen]) do
        for i,n in pairs(naughty.notifications[screen][p]) do
            if (n.width == 258) then -- to close only previous bright/vol notifications
                naughty.destroy(n)
            end
        end
    end
end
function volnoti(title, info, progress)
    closeLastNoti(title)
    naughty.notify{
        position = "bottom_right",
        -- fg = "#0a0a0b",
        -- bg = "#426797",
        timeout = 2,
        width = 256,
        title = title,
        text = "<span>" .. info .. " " .. progress .."</span>"
    }
end

-- GlobalKeys bind
-- Add this to your globalkeys table
    awful.key({}, "XF86AudioRaiseVolume", function () awful.util.spawn("bash /usr/local/bin/awesome-volume.sh up" ) end,
       "Volume up"),
    awful.key({}, "XF86AudioLowerVolume", function () awful.util.spawn("bash /usr/local/bin/awesome-volume.sh down") end,
       "Volume down"),
    awful.key({}, "XF86AudioMute",        function () awful.util.spawn("bash /usr/local/bin/awesome-volume.sh mute") end,
       "Volume mute"),