name: Backport merged pull request
on:
  pull_request:
    types: [closed]
  issue_comment:
    types: [created]
permissions:
  contents: write # so it can comment
  pull-requests: write # so it can create pull requests
jobs:
  backport:
    name: Backport pull request
    runs-on: ubuntu-latest

    # Only run when pull request is merged
    # or when a comment containing `/backport` is created by someone other than the 
    # https://github.com/backport-action bot user (user id: 97796249). Note that if you use your
    # own PAT as `github_token`, that you should replace this id with yours.
    if: >
      (
        github.event_name == 'pull_request' &&
        github.event.pull_request.merged
      ) || (
        github.event_name == 'issue_comment' &&
        github.event.issue.pull_request &&
        github.event.comment.user.id != 97796249 &&
        contains(github.event.comment.body, '/backport')
      )
    steps:
      - uses: actions/checkout@v3
      - name: Create backport pull requests
        uses: korthout/backport-action@v1
        with:
          # Optional
          # Token to authenticate requests to GitHub
          # github_token: ${{ secrets.GITHUB_TOKEN }}

          # Optional
          # Working directory for the backport action
          # github_workspace: ${{ github.workspace }}

          # Optional
          # Regex pattern to match github labels
          # Must contain a capture group for the target branch
          # label_pattern: ^backport ([^ ]+)$

          # Optional
          # Template used as description in the pull requests created by this action.
          # Placeholders can be used to define variable values.
          # These are indicated by a dollar sign and curly braces (`${placeholder}`).
          # Please refer to this action's README for all available placeholders.
          # pull_description: |-
          #   # Description
          #   Backport of #${pull_number} to `${target_branch}`.

          # Optional
          # Template used as the title in the pull requests created by this action.
          # Placeholders can be used to define variable values.
          # These are indicated by a dollar sign and curly braces (`${placeholder}`).
          # Please refer to this action's README for all available placeholders.
          # pull_title: "[Backport ${target_branch}] ${pull_title}"