name: Build and upload to PyPI

# Build on every branch push, tag push, and pull request change:
on: [push, pull_request]

jobs:
  build_wheels:
    name: Build wheels on ${{ matrix.os }}
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-latest, macos-latest, windows-latest]

    steps:
      - uses: actions/checkout@v2

      - name: Build wheels
        uses: pypa/cibuildwheel@v2.5.0
        env:
          CIBW_ARCHS_WINDOWS: "auto"
          CIBW_ARCHS_LINUX: "auto"
          CIBW_ARCHS_MACOS: "all"

      - uses: actions/upload-artifact@v2
        with:
          path: ./wheelhouse/*.whl

  build_sdist:
    name: Build source distribution
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2

      - name: Build sdist
        run: pipx run build --sdist

      - uses: actions/upload-artifact@v2
        with:
          path: dist/*.tar.gz

  upload_pypi:
    needs: [build_wheels, build_sdist]
    runs-on: ubuntu-latest
    if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags/')
    steps:
      - uses: actions/download-artifact@v2
        with:
          name: artifact
          path: dist

      - uses: pypa/gh-action-pypi-publish@v1.4.2
        with:
          user: __token__
          password: ${{ secrets.pypi_password }}
