name: Publish package
# Publish to PyPI when new release on GitHub, if tests pass
on:
  release:
    types: [created]
  workflow_dispatch:
  # Manual trigger in case the release needs to be rerun

jobs:

  tests:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        python-version: [3.7, 3.8, 3.9]

    steps:
    - uses: actions/checkout@v2
    - name: Set up Python ${{ matrix.python-version }}
      uses: actions/setup-python@v2
      with:
        python-version: ${{ matrix.python-version }}

    - name: Install dependencies
      run: |
        python -m pip install --upgrade pip
        pip install pytest flake8
        pip install .

    - name: Check code style with flake8 (lint)
      run: |
        # warnings if there are Python syntax errors or undefined names 
        # (remove --exit-zero to fail when syntax error)
        flake8 . --count --exit-zero --select=E9,F63,F7,F82 --show-source --statistics
        # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
        flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics

    - name: Test with pytest
      run: pytest

  
  publish:
    needs: [ tests ]
    runs-on: ubuntu-latest

    steps:
    - 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 --upgrade pip
        pip install setuptools wheel twine
        python setup.py sdist bdist_wheel

    - name: Build and publish to PyPI
      env:
        TWINE_USERNAME: ${{ secrets.PYPI_USERNAME }}
        TWINE_PASSWORD: ${{ secrets.PYPI_PASSWORD }}
      run: |
        python setup.py sdist bdist_wheel
        twine upload dist/*