#!/usr/bin/env bash

# USAGE

# ./convertToTrayIcon <input png or icns> <outfilename>.png
# Example
# ./convertToTrayIcon ~/sample.icns ~/converted.png

set -e

SOURCE=$1
DEST=$2

if [ -z "${SOURCE}" ]; then
	echo "No source image specified"
	exit 1
fi

if [ -z "${DEST}" ]; then
	echo "No destination specified"
	exit 1
fi

NAME=$(basename "${SOURCE}")
EXT="${NAME##*.}"

if [ "${EXT}" == "png" ]; then
    cp "${SOURCE}" "${DEST}"
    exit 0
fi

sips --setProperty format png --resampleHeightWidth "256" "256" "${SOURCE}" --out "${DEST}"