name: Commit message format check
on:
  # ATTENTION: See https://securitylab.github.com/research/github-actions-preventing-pwn-requests/
  # re security implications of using this trigger; in particular, no code from PR branches must
  # be executed in any flows triggered by it
  pull_request_target:
    branches: [ master ]

jobs:
  build:
    name: Commit message
    runs-on: ubuntu-latest
    steps:
      - name: Commit messages in format DBZ-xxx
        env:
          BASE_REF: ${{ github.base_ref }}
        run: |
          ! git log --format='format:%s' refs/remotes/origin/$BASE_REF.. | tail -n +2 | grep -Ev '^(DBZ-[[:digit:]]+)|(\[release\])|(\[jenkins-jobs\])|(\[docs\]) '
      - name: Create Comment
        if: ${{ failure() }}
        uses: peter-evans/create-or-update-comment@v1
        with:
          issue-number: ${{ github.event.pull_request.number }}
          body: |
            Hi @${{ github.event.pull_request.user.login }}, thanks for your contribution. Please prefix the commit message(s) with the [DBZ-xxx JIRA issue key](https://github.com/debezium/debezium/blob/master/CONTRIBUTE.md#making-changes).