#!/bin/bash

vol=$(amixer get Master | grep "Mono: Playback" | sed -n 's/.*Mono: Playback [0-9]* \[\([0-9]*\)%\].*\[\(.*\)\]/\1 \2/p')
v=${vol%% *}   # Volume percentage
s=${vol#* }    # Volume status (on/off)

if [[ $v == '0' ]]; then
    s="empty";
    ico="";
elif [[ "$s" == "on" ]]; then
    s="low";
    ico="";
    if [[ $v -gt 35 ]]; then
    s="med";
    ico=""; fi
    if [[ $v -gt 50 ]]; then
    s="high";
    ico=""; fi
    if [[ $v -gt 80 ]]; then
    s="vhigh";
    ico=""; fi
    if [[ $v -eq 100 ]]; then
    s="full";
    ico=""; fi
else
    ico="";
fi

echo "{\"level\":\"$v\",\"status\":\"$s\",\"icon\":\"$ico\"}"