name: Delete merged branch
on:
  pull_request:
    types:
      - closed

jobs:
  delete-branch:
    runs-on: ubuntu-latest
    permissions:
      contents: write
    if: github.event.pull_request.merged == true && github.event.pull_request.head.repo.full_name == github.repository
    steps:
      - name: Delete merged branch
        uses: actions/github-script@v8
        continue-on-error: true
        with:
          script: |
            github.rest.git.deleteRef({
              owner: context.repo.owner,
              repo: context.repo.repo,
              ref: `heads/${context.payload.pull_request.head.ref}`,
            })