#!/bin/bash
set -e
set +x

if [[ ("$1" == "-h") || ("$1" == "--help") ]]; then
  echo "usage: $(basename $0) [output-absolute-path]"
  echo
  echo "Generate distributable .zip archive from ./output folder that was previously built."
  echo
  exit 0
fi

ZIP_PATH=$1
if [[ $ZIP_PATH != /* ]]; then
  echo "ERROR: path $ZIP_PATH is not absolute"
  exit 1
fi
if [[ $ZIP_PATH != *.zip ]]; then
  echo "ERROR: path $ZIP_PATH must have .zip extension"
  exit 1
fi
if [[ -f $ZIP_PATH ]]; then
  echo "ERROR: path $ZIP_PATH exists; can't do anything."
  exit 1
fi
if ! [[ -d $(dirname $ZIP_PATH) ]]; then
  echo "ERROR: folder for path $($ZIP_PATH) does not exist."
  exit 1
fi

trap "cd $(pwd -P)" EXIT
cd "$(dirname $0)"

cp output/ffmpeg.zip $ZIP_PATH