#!/usr/bin/env clopper-ob-bash
##
# Sound controlls

set -eo pipefail

master-percentage() {
    amixer -D pulse get Master | grep -Pom 1 '(?<=\[)[0-9]+(?=%\])'
}

master-status() {
    amixer -D pulse get Master | grep -Pom 1 '(?<=\[)(on|off)(?=\]$)'
}

master-is-on() {
    [[ $(master-status) == 'on' ]]
}

increase-master() {
    declare master_percentage=''
    master_percentage="$(master-percentage)"
    [[ $master_percentage -le 100 ]] || return 1
    amixer -D pulse set Master $((master_percentage + 8))'%'
}

decrease-master() {
    declare master_percentage=''
    master_percentage="$(master-percentage)"
    [[ $master_percentage -ge 0 ]] || return 1
    amixer -D pulse set Master $((master_percentage - 8))'%'
}

disable-master() {
    amixer -D pulse set Master off
}

enable-master() {
    amixer -D pulse set Master on
}

notify-volume() {
    notify-send.sh -i "$(icon sound-up)" \
	   --replace-file="$HOME/.cache/clopper-ob/sound.id" \
	   "    $(bar $(($(master-percentage)/4)))"
    play-sound volume-change
}

case "$1" in
    +)
	increase-master
	notify-volume
	;;
    -)
	decrease-master
	notify-volume
	;;
    toggle)
	if master-is-on; then
	    disable-master
	    notify-send.sh -i "$(icon sound-off)" 'Muted' \
		--replace-file="$HOME/.cache/clopper-ob/sound.id"
	else
	    enable-master
	    notify-volume
	fi
	;;
esac