name: PyTorch & Conda

# see: https://help.github.com/en/actions/reference/events-that-trigger-workflows
on:  # Trigger the workflow on push or pull request, but only for the master branch
  push:
    branches: [ master, "release/*" ]
  pull_request:
    branches: [master, "release/*"]

jobs:
  conda:
    runs-on: ubuntu-20.04
    container: pytorchlightning/pytorch_lightning:base-conda-py${{ matrix.python-version }}-torch${{ matrix.pytorch-version }}
    strategy:
      fail-fast: false
      matrix:
        # os: [ubuntu-20.04]
        python-version: [3.7]
        pytorch-version: [1.4, 1.5, 1.6, 1.7, 1.8, 1.9]

    # Timeout: https://stackoverflow.com/a/59076067/4521646
    timeout-minutes: 35
    steps:
    - uses: actions/checkout@v2

    - name: Update dependencies
      run: |
        conda info
        conda list
        # adjust versions according installed Torch version
        python ./requirements/adjust_versions.py requirements/extra.txt
        python ./requirements/adjust_versions.py requirements/examples.txt
        pip install --requirement requirements/devel.txt --upgrade-strategy only-if-needed
        pip list

    - name: Pull checkpoints from S3
      run: |
        # enter legacy and update checkpoints from S3
        cd legacy
        curl https://pl-public-data.s3.amazonaws.com/legacy/checkpoints.zip --output checkpoints.zip
        unzip -o checkpoints.zip
        ls -l checkpoints/

    - name: Tests
      run: |
        # NOTE: run coverage on tests does not propagare faler status for Win, https://github.com/nedbat/coveragepy/issues/1003
        coverage run --source pytorch_lightning -m pytest pytorch_lightning tests -v --durations=50 --junitxml=junit/test-results-${{ runner.os }}-torch${{ matrix.pytorch-version }}.xml
      shell: bash -l {0}

    - name: Upload pytest results
      uses: actions/upload-artifact@v2
      with:
        name: pytest-results-${{ runner.os }}-${{ matrix.python-version }}-${{ matrix.requires }}
        path: junit/test-results-${{ runner.os }}-${{ matrix.python-version }}-${{ matrix.requires }}.xml
      if: failure()

    - name: Statistics
      if: success()
      run: |
        coverage report
        coverage xml

    - name: Upload coverage to Codecov
      uses: codecov/codecov-action@v1
      if: always()
      # see: https://github.com/actions/toolkit/issues/399
      continue-on-error: true
      with:
        token: ${{ secrets.CODECOV_TOKEN }}
        file: coverage.xml
        flags: cpu,pytest,torch${{ matrix.pytorch-version }}
        name: CPU-coverage
        fail_ci_if_error: false