bump-package.yml

name: Bump package version

on:
  workflow_call:
    inputs:
      workspace:
        required: true
        type: string
        description: 'Yarn workspace name'
      path:
        required: true
        type: string
        description: 'Package directory relative to repo root'

jobs:
  bump:
    runs-on: ubuntu-22.04
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
          repository: ${{ github.event.pull_request.head.repo.full_name }}
          ref: ${{ github.event.pull_request.head.ref }}

      - name: Check if package was modified and version needs bump
        id: check
        run: |
          # Exit cleanly if the package directory was not touched in this PR
          if git diff --quiet ${{ github.event.pull_request.base.sha }} HEAD -- ${{ inputs.path }}; then
            echo "No changes detected in ${{ inputs.path }}."
            echo "should-bump=false" >> $GITHUB_OUTPUT
            exit 0
          fi

          # Compare old (base) and new (HEAD) version strings
          OLD_VERSION=$(git show ${{ github.event.pull_request.base.sha }}:${{ inputs.path }}/package.json | jq -r '.version')
          NEW_VERSION=$(jq -r '.version' ${{ inputs.path }}/package.json)

          if [ "$OLD_VERSION" != "$NEW_VERSION" ]; then
            echo "Version already bumped by developer ($OLD_VERSION → $NEW_VERSION)."
            echo "should-bump=false" >> $GITHUB_OUTPUT
            exit 0
          fi

          echo "should-bump=true" >> $GITHUB_OUTPUT

      - name: Determine bump level from conventional commits
        id: level
        if: steps.check.outputs.should-bump == 'true'
        run: |
          # Gather full commit messages (subject + body) only for commits touching this package
          COMMITS=$(git log ${{ github.event.pull_request.base.sha }}..HEAD --format=%B -- ${{ inputs.path }})

          if echo "$COMMITS" | grep -qE '^[a-z]+(\([^)]+\))?!:'; then
            LEVEL=major
          elif echo "$COMMITS" | grep -qE 'BREAKING[- ]CHANGE'; then
            LEVEL=major
          elif echo "$COMMITS" | grep -qE '^feat(\([^)]*\))?:'; then
            LEVEL=minor
          else
            LEVEL=patch
          fi

          echo "level=$LEVEL" >> $GITHUB_OUTPUT
          echo "Bumping ${{ inputs.workspace }} with $LEVEL level"

      - uses: actions/setup-node@v4
        if: steps.check.outputs.should-bump == 'true'
        with:
          node-version-file: '.nvmrc'

      - run: corepack enable
        if: steps.check.outputs.should-bump == 'true'

      - run: yarn
        if: steps.check.outputs.should-bump == 'true'

      - name: Bump ${{ inputs.workspace }} version
        if: steps.check.outputs.should-bump == 'true'
        run: yarn workspace ${{ inputs.workspace }} version ${{ steps.level.outputs.level }}

      - uses: EndBug/add-and-commit@v9
        if: steps.check.outputs.should-bump == 'true'
        with:
          author_name: github-actions
          author_email: 41898282+github-actions[bot]@users.noreply.github.com
          message: 'chore: bump ${{ inputs.workspace }} version'
          pull: '--rebase --autostash'