package.sh

#!/bin/bash

# Purpose: To package a .js file that you have on GitHub
# for use in your website via CDN (i.e. production use),
# run this command: bash package.sh

# More info: SemVer: https://semver.org

LIBRARY_NAME=_2DNote
SOURCE_FILE=_2DNote.js # edit this!
MINIFIED_FILE=_2DNote.min.js # edit this!

# install minify if it's not available:
if ! [ -x "$(command -v minify)" ]; then npm i minify; fi
# minify the code:
minify $SOURCE_FILE > $MINIFIED_FILE

# get latest release number #.#.#:
git pull >/dev/null 2>&1 # (update just in case)
LATEST_RELEASE_VERSION="$(git describe --tags --abbrev=0)"
IFS='.' # delimiter
read -a VERSION_NUMBERS <<< "$LATEST_RELEASE_VERSION"
MAJOR=${VERSION_NUMBERS[0]}
MINOR=${VERSION_NUMBERS[1]}
PATCH=${VERSION_NUMBERS[2]}

echo
echo "Enter a number:"
echo
echo " 0 = Keep as version ${LATEST_RELEASE_VERSION}"
echo " 1 = Major breaking change? ($(($MAJOR+1)).0.0)"
echo " 2 = Minor enhancement? ($MAJOR.$(($MINOR+1)).0)"
echo " 3 = Backwards-compatible fix? ($MAJOR.$MINOR.$(($PATCH+1)))"
echo
read -p "(Choose 1/2/3): " -n 1 -r
echo
echo
if [[ $REPLY =~ ^1$ ]]; then
  echo "Changing MAJOR version:"
  MAJOR="$(($MAJOR+1))"
  MINOR=0
  PATCH=0
elif [[ $REPLY =~ ^2$ ]]; then
  echo "Changing MINOR version:"
  MINOR="$(($MINOR+1))"
  PATCH=0
elif [[ $REPLY =~ ^3$ ]]; then
  echo "Changing PATCH version:"
  PATCH="$(($PATCH+1))"
elif [[ $REPLY =~ ^[qQxXnN]$ ]]; then
  echo "Exiting."
  exit 1
else
  echo "Keeping as version ${LATEST_RELEASE_VERSION}"
fi

echo
echo "${LIBRARY_NAME} ${MAJOR}.${MINOR}.${PATCH} minified"
echo

# add version number to top of file:
sed -i '' '1i\
'//\ $LIBRARY_NAME\ ${MAJOR}.${MINOR}.${PATCH}'
' "${MINIFIED_FILE}"
# NOTE: the in-place parameter '' is required for Mac

# print out hash for use in integrity attribute:
echo sha384-$(cat "${MINIFIED_FILE}" | openssl dgst -sha384 -binary | openssl base64 -A)
echo
echo NOTE: Make sure to update the version in package.json
echo