#!/bin/bash
pname="$(basename "$0")"
version=1.0.0

function usage(){
    printf "%s usage:\n" "${pname}"
    printf "    %s -h|--help|-v|--version\n" "${pname}"
    printf "    %s script.sh app-name\n" "${pname}"
}

if [ $# -eq 0 -o $# -gt 2 ] ; then
    usage
    exit 1
fi

case "$1" in
-h|--help|-help|help) usage ; exit 0 ;;
-v|--version)         printf "%s version %s\n" "${pname}" "${version}" ; exit 0 ;;
*) true ;;
esac

SCRIPTNAME="$1"
APPNAME="${2:-$(basename "$1" ".sh")}"
DIR="$APPNAME.app/Contents/MacOS"
PWD="$(pwd)"

if [ -a "${APPNAME}.app" ]; then
    echo "${PWD}/${APPNAME}.app already exists."
    exit 1
fi

mkdir -p "${DIR}"
cp "${SCRIPTNAME}" "$DIR/$APPNAME"
chmod +x "${DIR}/${APPNAME}"
echo "${PWD}/${APPNAME}.app"
exit 0