sisyphus/scripts/notify.sh

#!/usr/bin/env bash
# Show system status in notification, or your own message
# Syntaxis: notify [-vb] [-t <timeout>] [<title> <message>]

# Requirements: 
# - brightnessctl

panic () {
    >&2 echo "Syntaxis: notify [-vb] [<title> [<message>]]"
    exit 1
}

# Get options
while getopts ":bvt:" options; do
	case "${options}" in 
		b) 	
			value=$( brightnessctl | grep -o "[0-9]*%" | tr -d '%' )
			title="Brightness: ${value}%"
            category='sysinfo'
			;;
		v)
            # Get volume (don't use pamixer because that is way slower)
            value=$( pactl get-sink-volume @DEFAULT_SINK@ \
                | cut -d '/' -f2 \
                | grep -o '[0-9]*%' \
                | tr -d '%' )
            title="Volume: ${value}%"
            category='sysinfo'

            # If audio disabled, set value to zero.
            if [ "$( pactl get-sink-mute @DEFAULT_SINK@ )" == "Mute: yes" ] ; then 
                title="Volume: ${value}% (Disabled)"
                value=0
            fi
			;;
        t)  
            timeout="${OPTARG}"
            ;;
		*)	
            panic
			;;
	esac
done

shift $((OPTIND - 1))

# Check arguments
if [ $# -gt 2 ] ; then 
    panic
elif [ $# -gt 0 ] ; then
    title="${1}"
    message="${2:-}"
fi

# Build command string
arguments=""
if [[ ! -z "${category}" ]] ; then 
    arguments+=" -c ${category}"
fi
if [[ ! -z "${timeout}" ]] ; then 
    arguments+=" -t ${timeout}"
fi
if [[ ! -z "${value}" ]] ; then 
    arguments+=" -h int:value:${value}"
fi

notify-send "${title}" "${message}" ${arguments}