name: Publish Python 🐍 distributions 📦 to PyPI

on:
  push:
    tags:
      - '*'

jobs:
  build-n-publish:
    name: Build and publish Python 🐍 distributions 📦 to PyPI
    runs-on: ubuntu-latest

    steps:
    - name: Checkout code
      uses: actions/checkout@v2

    - name: Set up Python
      uses: actions/setup-python@v2
      with:
        python-version: 3.8

    - name: Install dependencies
      run: |
        python -m pip install build towncrier

    - name: Generate release notes to "RELEASE_NOTES" Environment Variable
      run: |
        echo "RELEASE_NOTES=$(towncrier --draft | base64)" >> $GITHUB_ENV

    - name: Generate version notes with towncrier
      run: |
        towncrier --yes

    - name: Build a binary wheel and a source tarball
      run: |
        cd package
        python setup.py build

    - name: Publish distribution 📦 to PyPI
      run: |
        cd package
        pip install twine
        twine upload dist/*
      env:
        TWINE_USERNAME: __token__
        TWINE_PASSWORD: ${{ secrets.PYPI_API_TOKEN }}

    - name: Create Release
      uses: actions/create-release@v1
      env:
        GITHUB_TOKEN: ${{ secrets.RELEASE_TOKEN }}
      with:
        tag_name: ${{ github.ref }}
        release_name: Release ${{ github.ref }}
        body: ${{ env.RELEASE_NOTES | base64 --decode }}