name: Backport PRs

on:
  pull_request:
    types: [closed, labeled]

jobs:
  backport:
    name: Create backport PRs
    runs-on: ubuntu-latest

    if: >
      (
        github.event_name == 'pull_request' &&
        github.event.pull_request.merged
      )
    steps:
      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2

      - name: Create backport PRs
        uses: korthout/backport-action@c656f5d5851037b2b38fb5db2691a03fa229e3b2 # v4.0.1
        with:
          pull_description: |-
            # Description
            Backport of #${pull_number} to `${target_branch}`.

            # Original description

            ${pull_description}
          pull_title: ${pull_title} (backport ${target_branch})
          add_author_as_assignee: true
          copy_assignees: true
          copy_requested_reviewers: true
          copy_labels_pattern: '.*'
          experimental: >
            {
              "conflict_resolution": "draft_commit_conflicts"
            }