draft-and-bump.yml

# This workflow broadly does 3 tasks-
# (1) Create/Update Release drafts
# (2) Auto Label PR's
# (3) Bump Version

# The update_release_draft job handles the first two tasks, on the basis of event which triggered workflow.
# (1) if push to master by merging PR.
# (2) if pull request opened, reopended, or synchronized (commit push)

# The bump-version job handles the third task. It bumps the version of the rockspec if
# - PR is merged to master with label - "publish"

name: Draft and Bump

on:
  push:
    branches:
      - master
  # pull_request event is required only for autolabeler
  pull_request:
    types: [opened, reopened, synchronize]

jobs:
  update-release-draft:
    runs-on: ubuntu-latest

    outputs:
      tag-name: ${{ steps.release-drafter.outputs.tag_name }}

    steps:
      - id: release-drafter
        uses: release-drafter/release-drafter@v5
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

  bump-version:
    runs-on: ubuntu-latest

    needs: [update-release-draft]

    steps:
    - name: Check Publish label
      id: check-publish-label
      # If target branch is "master", only then run this step
      if: ${{ github.ref == 'refs/heads/master' }}
      uses: shioyang/check-pr-labels-on-push-action@v1.0.3
      with:
        github-token: ${{ secrets.GITHUB_TOKEN }}
        labels: '["publish"]'

    - name: Checkout repo
      # If target branch is "master" and PR has label "publish", only then run this step
      if: ${{ steps.check-publish-label.outputs.result == 'true' && github.ref == 'refs/heads/master' }}
      uses: actions/checkout@v2
      with:
        token: ${{ secrets.COMMIT_ACCESS_TOKEN }}

    - name: Bump Version
      if: ${{ steps.check-publish-label.outputs.result == 'true' && github.ref == 'refs/heads/master' }}
      run: .ci/scripts/bump-rockspec.sh ${{ needs.update-release-draft.outputs.tag-name }}