release.yml

# Purpose:
# Automatically bumps the project's patch version bi-weekly on Tuesdays.
#
# Details:
# - Triggered at 00:00 UTC every Tuesday; runs on even weeks of the year.
# - Sets up the environment by checking out the repo and setting up Node.js.
# - Bumps patch version using `npm version patch`, then creates a new branch 'release/x.x.x'.
# - Pushes changes and creates a PR to `main` using GitHub CLI.
# - Can also be triggered manually via `workflow_dispatch`.
name: Version Bump

on:
  workflow_dispatch: # Allow to manually trigger the workflow
  schedule:
    - cron: '0 0 * * 2' # At 00:00 UTC every Tuesday

jobs:
  version-bump:
    runs-on: ubuntu-latest

    steps:
      # Since cronjob syntax doesn't support bi-weekly schedule, we need to check if it's an even week or not
      - name: Check if it's an even week
        run: |
          WEEK_NUM=$(date +'%V')
          WEEK_NUM=$((10#$WEEK_NUM))
          if [ $((WEEK_NUM % 2)) -ne 0 ]; then
            echo "Odd week number ($WEEK_NUM), terminating job."
            exit 1
          fi

      - name: Check out the repository
        uses: actions/checkout@v4

      - name: Set up Node.js
        uses: actions/setup-node@v4
        with:
          node-version: '18'

      - name: Configure Git
        run: |
          git config --local user.email "action@github.com"
          git config --local user.name "GitHub Action"

      - name: Bump patch version
        run: |
          git fetch --prune --unshallow --tags --force
          NEW_VERSION=$(npm version patch)
          echo "New version: $NEW_VERSION"
          echo "NEW_VERSION=$NEW_VERSION" >> $GITHUB_ENV

      - name: Install npm dependencies
        run: npm install

      - name: Update CHANGELOG.md
        run: |
          npm run update-changelog
          git add CHANGELOG.md
          git commit -m "Update CHANGELOG for new version $NEW_VERSION"

      - name: Delete existing release tag
        run: |
          if git rev-parse $NEW_VERSION >/dev/null 2>&1; then
            git tag -d $NEW_VERSION
            git push origin :refs/tags/$NEW_VERSION
          fi

      - name: Delete existing release branch
        run: |
          if git ls-remote --heads origin release/${NEW_VERSION} | grep release/${NEW_VERSION}; then
            git push origin --delete release/${NEW_VERSION}
          fi

      - name: Create new release branch
        run: |
          NEW_BRANCH="release/${NEW_VERSION}"
          git checkout -b $NEW_BRANCH
          git push -u origin $NEW_BRANCH
          git push --tags
          gh pr create --base main --head $NEW_BRANCH --title "Release $NEW_VERSION [CHECK SEMVER BEFORE MERGE]" --body "This is an automated PR to update to version $NEW_VERSION. Please check [SemVer](https://semver.org/) for correct versioning before merging this PR."
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN}}