name: CI

on:
  push:
  pull_request:
  schedule:
    # Weekly, at 6:45 AM on Thursday (somewhat randomly chosen).
    - cron: '45 6 * * 4'
  workflow_dispatch:

env:
  PIP_DISABLE_PIP_VERSION_CHECK: 1
  PIP_NO_PYTHON_VERSION_WARNING: 1

jobs:
  test:
    strategy:
      matrix:
        python-version: ['3.4', '3.5', '3.6', '3.7', '3.8', '3.9', '3.10']
      # Random number to prevent exceeding the request frequency limit.
      max-parallel: 3
    # 3.4 is not available on Focal.
    runs-on: ubuntu-18.04
    name: 'Python ${{ matrix.python-version }}'
    steps:
      - name: Checkout
        uses: actions/checkout@v3
      - name: Set up Python
        uses: actions/setup-python@v4
        with:
          python-version: '${{ matrix.python-version }}'
      - name: Install dependencies
        run: pip install -q -r requirements.txt
      - name: Run tests
        run: ./test/bin/main.sh

  publish_pypi:
    needs: [test]
    runs-on: ubuntu-latest
    name: Publish
    steps:
      - name: Checkout
        uses: actions/checkout@v3
      - name: Set up Python
        uses: actions/setup-python@v4
        with:
          python-version: '3.10'
      - name: Verify package can be installed
        run: pip install -q .
      - name: Install package builder
        run: pip install -q --upgrade build
      - name: Build package
        run: python -m build
      - name: Publish as artifact
        uses: actions/upload-artifact@v3
        with:
          name: dist
          path: dist
          if-no-files-found: error
      - name: Publish to PyPI
        if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags/')
        uses: pypa/gh-action-pypi-publish@release/v1
        with:
          user: __token__
          password: '${{ secrets.PYPI_API_TOKEN }}'