#!/bin/sh
set -eu

usage() {
	cat <<-'EOF'
		boop [-m MESSAGE] -- COMMAND...
		boop -h
	EOF
}

help() {
	cat <<-'EOF'

		Options:
		  -m MESSAGE    text message of the desktop
		                notification (default: COMMAND)
		  -h, --help    show this message

		  COMMAND       the commands to be executed


		Examples:

		  Play the positive sound, using the command as message:

		    $ boop echo 123

		  Fail with the underlying 127 return code with the
		  message "ERROR":

		    $ boop -m ERROR ech 123
	EOF
}

for flag in "$@"; do
	case "$flag" in
		--)
			break
			;;
		--help)
			usage
			help
			exit
			;;
		*)
			;;
	esac
done

while getopts 'm:h' flag; do
	case "$flag" in
		m)
			MESSAGE="$OPTARG"
			;;
		h)
			usage
			help
			exit
			;;
		*)
			usage >&2
			exit 2
			;;
	esac
done
shift $((OPTIND - 1))


set +e
"$@"
STATUS=$?
set -e

if [ "$STATUS" = 0 ]; then
	N=0
else
	N=1
fi

CMD="$@"
msg -"$N" -bs -D "${MESSAGE:-$CMD}"

exit "$STATUS"