name: ci
on:
  push:
    branches:
      - master
  pull_request:
    branches:
      - master
jobs:
  test:
    runs-on: ${{ matrix.platform }}
    strategy:
      matrix:
        platform: [ubuntu-latest, windows-latest]
        python-version: [3.6, 3.7, 3.8, 3.9, 3.10.0-rc.2]

    env:
      PY_COLORS: 1

    steps:
      - uses: actions/checkout@v2

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

      # tox fails on Windows if version > 3.8.3
      - name: Install base dependencies - Windows
        if: matrix.platform == 'windows-latest'
        run: |
          python -m pip install --upgrade pip
          python -m pip install tox==3.8.3 sphinx

      - name: Install base dependencies - Ubuntu
        if: matrix.platform != 'windows-latest'
        run: |
          python -m pip install --upgrade pip
          python -m pip install tox sphinx

      - name: Install optional dependencies
        if: matrix.platform != 'windows-latest'
        run: |
          sudo apt update
          sudo apt install ffmpeg  # For replaygain

      - name: Test older Python versions with tox
        if: matrix.python-version != '3.9' && matrix.python-version != '3.10.0-rc.2'
        run: |
          tox -e py-test

      - name: Test latest Python version with tox and get coverage
        if: matrix.python-version == '3.9'
        run: |
          tox -vv -e py-cov

      - name: Test nightly Python version with tox
        if: matrix.python-version == '3.10.0-rc.2'
        # continue-on-error is not ideal since it doesn't give a visible
        # warning, but there doesn't seem to be anything better:
        # https://github.com/actions/toolkit/issues/399
        continue-on-error: true
        run: |
          tox -e py-test

      - name: Upload code coverage
        if: matrix.python-version == '3.9'
        run: |
          pip install codecov || true
          codecov || true

  test-docs:
    runs-on: ubuntu-latest

    env:
      PY_COLORS: 1

    steps:
      - uses: actions/checkout@v2

      - name: Set up Python 3.9
        uses: actions/setup-python@v2
        with:
          python-version: 3.9

      - name: Install base dependencies
        run: |
          python -m pip install --upgrade pip
          python -m pip install tox sphinx

      - name: Add problem matcher
        run: echo "::add-matcher::.github/sphinx-problem-matcher.json"

      - name: Build and check docs using tox
        run: tox -e docs

  lint:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v2

      - name: Set up Python 3.9
        uses: actions/setup-python@v2
        with:
          python-version: 3.9

      - name: Install base dependencies
        run: |
          python -m pip install --upgrade pip
          python -m pip install tox sphinx

      - name: Add problem matcher
        run: echo "::add-matcher::.github/flake8-problem-matcher.json"

      - name: Lint with flake8
        run: tox -e py-lint