name: Publish to PyPI if new version

on:
  push:
    tags:
      - 'v*'

jobs:
  build-n-publish:
    name: Build and publish to TestPyPI and PyPI
    runs-on: ubuntu-18.04
    steps:
    - uses: actions/checkout@master
    - name: Set up Python 3
      uses: actions/setup-python@v1
      with:
        python-version: 3
    - name: Install pypa/build
      run: >-
        python -m
        pip install
        build
        --user
    - name: Build a binary wheel and a source tarball
      run: >-
        python -m
        build
        --sdist
        --wheel
        --outdir dist/
        .
    - name: Publish to Test PyPI
      uses: pypa/gh-action-pypi-publish@master
      with:
        skip_existing: true
        password: ${{ secrets.TESTPYPI_API_TOKEN }}
        repository_url: https://test.pypi.org/legacy/
    - name: Publish to PyPI
      if: startsWith(github.ref, 'refs/tags')
      uses: pypa/gh-action-pypi-publish@master
      with:
        password: ${{ secrets.PYPI_API_TOKEN }}