#!/bin/sh

. "lib_common.sh"
. "lib_handle.sh"

help() {
cat << EOF
${progname}: Change volume
options:
 -i [Vol]        Increase volume by Vol
 -d [Vol]        Decrease volume by Vol
 -s [Vol]        Set volume to Vol
 -p              Show the current volume
 -t              Toggle between mute and unmute
 -h              Print this message and exit
EOF
exit 0
}

volume_handle check_program

[ $# != 1 ] && [ $# != 2 ] && invalid_use

while getopts "i:d:s:pth" option; do
	case "${option}" in
	i) run --reload-status volume_handle up "${OPTARG}"   ;;
	d) run --reload-status volume_handle down "${OPTARG}" ;;
	s) run --reload-status volume_handle set "${OPTARG}"  ;;
	t) run --reload-status volume_handle toggle           ;;
	p) volume_handle get-current ;;
	h) help ;;

	*) invalid_use -h ;;
	esac
done
invalid_use