backport.yml

name: Backport
on:
  pull_request_target:
    types: [closed, labeled]

# WARNING:
# When extending this action, be aware that $GITHUB_TOKEN allows write access to
# the GitHub repository. This means that it should not evaluate user input in a
# way that allows code injection.

permissions:
  contents: read

jobs:
  backport:
    permissions:
      contents: write # for korthout/backport-action to create branch
      pull-requests: write # for korthout/backport-action to create PR to backport
    name: Backport Pull Request
    if: github.repository_owner == 'epics-extensions' && github.event.pull_request.merged == true && (github.event_name != 'labeled' || startsWith('backport', github.event.label.name))
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@d632683dd7b4114ad314bca15554477dd762a938 # v4.2.0
        with:
          ref: ${{ github.event.pull_request.head.sha }}
          # Credentials are needed to push to a remote branch,
          # before creating a pull request
          persist-credentials: true
      - name: Create backport PRs
        uses: korthout/backport-action@be567af183754f6a5d831ae90f648954763f17f5 # v3.1.0
        with:
          # Config README: https://github.com/korthout/backport-action#backport-action
          branch_name: backport/${pull_number}-to-${target_branch}
          copy_labels_pattern: 'severity:\ssecurity'
          pull_description: |-
            Bot-based backport to `${target_branch}`, triggered by a label in #${pull_number}.