#!/bin/sh
#TODO: help
mpc=mpc
dest=org.freedesktop.Notifications
opath=/org/freedesktop/Notifications
meth=$dest.Notify
idfile=~/tmp/mpc-notify.id

notify() {
	replaces_id=0
	if [ -e $idfile ]; then
		replaces_id=`cat $idfile`
	fi
	echo $(expr "$(gdbus call --session \
	--dest $dest --object-path $opath --method $meth \
	mpc $replaces_id audio-volume-high "${1:-$out1}" "${2:-$out2}" '[]' \
	'{"urgency": <byte 0>}' 3000)" : '(uint32 \([0-9]*\),)') > $idfile
}

getoutput() {
	#TODO test if not playing for some commands
	#if mpc -f '' status | awk 'NR==2' | grep -v '^\[playing\]'; then
	case "$1" in
		current)
			out1=`$mpc -f %artist% current`
			out2="`$mpc -f %title% current`\n`mpc -f %album% current`";;
		status)	out1=`$mpc current`
			out2=`$mpc -f '%album% (%date%)' status`;;
		*)	 return 1;;
	esac
	if [ -z "$out1$out2" ]; then
		out1='Stopped'
	fi
}

cmd=${1:-current}
case "$cmd" in
	-d|--daemon|idle|idleloop)
		cmd=${2:-current}
		$mpc idleloop player | while read -r x; do
			getoutput $cmd
			notify "$out1" "$out2"
		done
		return;;
	*)	getoutput $cmd || return 1;;
esac
notify "$out1" "$out2"