#!/bin/sh

usage () {
  printf "Usage: build-umd <argument>\n"
}

# use zopfli for better compression if available
gzip () {
  zopfli -h 2>/dev/null
  if [ $? -eq 0 ]; then
    zopfli "$1" -i1000 -c
  else
    gzip -c "$1"
  fi
}

build_dev () {
  mkdir -p dist/
  NODE_ENV=development browserify index.js \
    --standalone=choo \
    -t envify \
    -g yo-yoify \
    -g es2020 \
    > dist/choo.js
}

build_min () {
  mkdir -p dist/
  NODE_ENV=production browserify index.js \
    --standalone=choo \
    -t envify \
    -g unassertify \
    -g yo-yoify \
    -g es2020 \
    -g uglifyify \
    -t envify \
    -p bundle-collapser/plugin \
    | uglifyjs \
    > dist/choo.min.js
}

build_gz () {
  build_min
  gzip dist/choo.min.js > dist/choo.min.js.gz
  cp dist/choo.min.js.gz dist/choo.gz
}

# parse CLI flags
while true; do
  case "$1" in
    -h|--help) usage && exit 1 ;;
    -- ) shift; break ;;
    * ) break ;;
  esac
done

case "$1" in
  d|dev) shift; build_dev "$@" ;;
  m|min) shift; build_min "$@" ;;
  g|gzip) shift; build_gz "$@" ;;
  *) shift; build_min "$@" ;;
esac