#!/usr/bin/env bash
set -eo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
cd $SCRIPT_DIR

function update-reveal-js(){
  pushd reveal.js/ > /dev/null
  git --work-tree="../$1/reveal.js" checkout HEAD -- .
  git checkout $(cat "../$1/reveal.js/VERSION" &> /dev/null || printf ".")
  git rev-parse HEAD > "../$1/VERSION"
  popd > /dev/null
}

[ -n "$1" ] || {
  echo "Missing folder name as argument."
  exit 1
}

outdir="$1"
mkdir -p "$outdir/reveal.js"
cp base.org "$outdir/index.org"
update-reveal-js $outdir