name: Python sanity

on: [pull_request]

jobs:
  build:
    name: Running sanity tests
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        python-version: [2.7, 3.8]

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

    - name: Get pip cache dir
      id: pip-cache
      run: |
        python -m pip install --upgrade pip
        echo "::set-output name=dir::$(pip cache dir)"

    - name: pip cache
      uses: actions/cache@v2
      with:
        path: ${{ steps.pip-cache.outputs.dir }}
        key: ${{ runner.os }}-pip-${{ matrix.python-version }}-${{ hashFiles('**/requirements-dev.txt') }}
        restore-keys: |
          ${{ runner.os }}-pip-${{ matrix.python-version }}-

    - name: Install dependencies
      run: |
        pip install -r requirements-dev.txt

    - name: Lint with flake8
      id: flake8
      run: |
        rm -f flake8.output
        flake8 . --statistics --output-file=flake8.output \
        && echo "::set-output name=lint::ok" \
        || echo "::set-output name=lint::error"
        cat flake8.output | awk -F: '{ if ($0 ~ /^\./) { gsub(/^[ \t]+/,"",$4); print "::error file=" $1 ",line=" $2 ",col=" $3 "::" $4 } else { print $0 } }'

        flake8 . --select=E9,F63,F7,F82 \
        && echo "::set-output name=syntax::ok" \
        || echo "::set-output name=syntax::error"

    - name: Run tests
      id: tests
      if: ${{ steps.flake8.outputs.syntax == 'ok' }}
      run: |
        coverage run
        coverage report

    - name: Upload coverage report to Codecov
      if: ${{ steps.tests.conclusion == 'success' }}
      env:
        CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
      run: |
        coverage xml
        bash <(curl -s https://codecov.io/bash) \
        || echo "::warning ::Codecov upload failed"

    - name: Error on flake8
      if: ${{ steps.flake8.outputs.lint != 'ok' }}
      run: |
        flake8 . --count --statistics --exit-zero --quiet
        echo "::error ::Please correct flake8 warnings and errors"
        exit 1