release.sh

#!/bin/bash

DEV_BRANCH="dev"
MAIN_BRANCH="master"

set -e

release() {
  VERSION_NBR=$(cat VERSION)
  if [ -z "$VERSION_NBR" ]; then
    VERSION_NBR="0.0.1"
  fi

  NEW_VERSION=$1
  if [ -z "$NEW_VERSION" ]; then
    NEW_VERSION="${VERSION_NBR%.*}.$((${VERSION_NBR##*.} + 1))"
  fi

  echo "Attempt to release version $VERSION_NBR and start working for $NEW_VERSION"

  # detect current branch
  BRANCH=$(git rev-parse --abbrev-ref HEAD)

  if [[ "$BRANCH" != "$DEV_BRANCH" ]]; then
    echo "ERROR: Checkout $DEV_BRANCH branch before tagging."
    exit 1
  fi

  if [ -z "$(git status --porcelain)" ]; then
    git pull origin $DEV_BRANCH

    # if any changes have been pushed directly to main branch,
    # include them to dev branch as well
    git fetch origin $MAIN_BRANCH:$MAIN_BRANCH
    git merge $MAIN_BRANCH
    git push origin $DEV_BRANCH

    VERSION=v$VERSION_NBR
    git tag -a $VERSION -m "Version $VERSION"
    git push origin $DEV_BRANCH --tags

    git checkout "$DEV_BRANCH"
    echo $NEW_VERSION >VERSION
    # increase npm package version if node projects are found in this or subdirectories
    find . "$@" -iname 'package.json' -not -path '*/node_modules/*' -execdir npm --no-git-tag-version version $NEW_VERSION \;
    git add VERSION
    git commit -a -m "Start dev for v$NEW_VERSION."
    git push origin $DEV_BRANCH
  else
    echo "ERROR: Working directory is not clean, commit or stash changes."
  fi
}

printf "Checking changes between $MAIN_BRANCH and $DEV_BRANCH.\n"
printf "Gate workflows are: $GATE\n"
printf "Workflow badge template is: $WORKFLOW_BADGE\n"

set +e # ignore diff return code for now

# check if there other changes than version number between main and dev branch
# TODO: detect libs changes from package.json and do release if any
GREP_STR="VERSION\|.*package.*json\|.*yarn.*lock"
diff="$(git diff origin/$MAIN_BRANCH $DEV_BRANCH --name-only | grep -v $GREP_STR)"

set -e

if [ -z "$diff" ]; then
  printf "\nNo changes found. No need to release.\n"
  exit 0
fi

printf "\nDiff between $MAIN_BRANCH and $DEV_BRANCH: $diff\n"

workflows=$(echo "$GATE" | tr ',' ' ')

for workflow in $workflows; do
  badge_url=${WORKFLOW_BADGE/'WORKFLOW_NAME'/"$workflow"}
  printf "Fetch badge for $workflow from url $badge_url\n"
  badge=$(curl -s $badge_url)
  if [[ $(echo $badge | grep failing) ]]; then # check if required workflow is passing
    printf "\nBuild is not passing. Should not release changes.\n"
    exit 1
  fi
  if [[ $(echo $badge | grep 'Not Found') ]]; then # check if required workflow is found
    printf "\nBuild is not found. Should not release changes.\n"
    exit 1
  fi
done

release $1