name: tests

on: [push, pull_request]

jobs:
  test:
    strategy:
      matrix:
        python:
        # Build on pre-releases until stable, then stable releases.
        # actions/setup-python#213
        - ~3.7.0-0
        - ~3.10.0-0
        - ~3.11.0-0
        platform:
        - ubuntu-latest
        - macos-latest
        - windows-latest
    runs-on: ${{ matrix.platform }}
    steps:
      - uses: actions/checkout@v3
      - name: Setup Python
        uses: actions/setup-python@v3
        with:
          python-version: ${{ matrix.python }}
      - name: Install tox
        run: |
          python -m pip install tox
      - name: Run tests
        run: tox

  check:  # This job does nothing and is only used for the branch protection
    if: always()

    needs:
    - test

    runs-on: ubuntu-latest

    steps:
    - name: Decide whether the needed jobs succeeded or failed
      uses: re-actors/alls-green@release/v1
      with:
        jobs: ${{ toJSON(needs) }}

  release:
    needs:
    - check
    if: github.event_name == 'push' && contains(github.ref, 'refs/tags/')
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v3
      - name: Setup Python
        uses: actions/setup-python@v3
        with:
          python-version: "3.10"
      - name: Install tox
        run: |
          python -m pip install tox
      - name: Release
        run: tox -e release
        env:
          TWINE_PASSWORD: ${{ secrets.PYPI_TOKEN }}
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
