name: Close master-targeted PRs
on:
  pull_request:
    branches:
      - 'master'

jobs:
  docs:
    name: PR Check
    runs-on: ubuntu-20.04

    concurrency: 
      group: pr
      cancel-in-progress: true

    steps:
      - name: Setup PHP
        uses: shivammathur/setup-php@v2
        with:
          php-version: '8.0'

      - name: Checkout D++
        uses: actions/checkout@v2
        with:
          submodules: recursive

      - name: Close master target PRs
        run: php buildtools/close-master-pr.php
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}