prepare_release.sh

#!/bin/bash

UPSTREAM_URL='git@github.com:TNG/momo-scheduler.git'
# default: not dry-run
DRY_RUN=0
UPSTREAM_BRANCH=main

set -eu

for arg in "$@"; do
  case $arg in
    --version=*)
      VERSION="${1#*=}"
      VERSION_PREFIXED="v${1#*=}"
      ;;
    --upstream=*)
      UPSTREAM_URL="${1#*=}"
      ;;
    --dry-run)
      DRY_RUN=1
      ;;
    *)
      printf "***************************\n"
      printf "* Error: Invalid argument.*\n"
      printf "***************************\n"
      exit 1
  esac
  shift
done

if [[ ! $VERSION =~ ^[0-9]*\.[0-9]*\.[0-9]*(-[A-Z0-9]*)?$ ]]; then
    echo "You have to provide a version as first parameter (without v-prefix, e.g. 0.14.0)"
    exit 1
fi

GIT_BRANCH=$(git rev-parse --abbrev-ref HEAD)
if [[ ! $GIT_BRANCH =~ $UPSTREAM_BRANCH ]]; then
    echo "You do not seem to be on the $UPSTREAM_BRANCH branch!"
    exit 1
fi

if [ -n "$(git status --porcelain)" ]; then
    echo "You have local changes!"
    if [[ $DRY_RUN = 0 ]]; then
      exit 1
    fi
fi

git pull "$UPSTREAM_URL" "$UPSTREAM_BRANCH"

RELEASE_BRANCH="$VERSION_PREFIXED-release"
git branch "$RELEASE_BRANCH"
git checkout "$RELEASE_BRANCH"

if [[ $DRY_RUN = 1 ]]; then
  echo "Preparing release of version $VERSION (dry-run)"
else
  echo "Preparing release of version $VERSION"
fi

echo "Updating version in package.json"
sed -i -e "s/\"version\":.*/\"version\":\ \"$VERSION\"\,/" package.json
npm install

echo "Linting, building and testing"
npm run lint
npm run build
npm run test

echo "Committing version change"
git add package.json package-lock.json
git commit -sm "chore: update version to $VERSION"

if [[ $DRY_RUN = 1 ]]; then
  echo "Pushing version to GitHub repository (dry-run)"
  git push --set-upstream "$UPSTREAM_URL" "$RELEASE_BRANCH" --dry-run
else
  echo "Pushing version to GitHub repository"
  git push --set-upstream "$UPSTREAM_URL" "$RELEASE_BRANCH"
fi

echo "Please merge $RELEASE_BRANCH into $UPSTREAM_BRANCH"

if [[ $DRY_RUN = 1 ]]; then
  echo "Run these commands to clean up: git checkout $UPSTREAM_BRANCH && git branch -D $RELEASE_BRANCH"
fi