name: test pull requests

on:
  push:
    branches:
      - '!master'
  pull_request:

jobs:
  build:

    # There were errors on Mac that would lead to non-stop printing of
    # error messages forever instead of the job crashing. To prevent this,
    # a timeout is placed here (default value is otherwise 360min).
    # Usually, jobs currently run through in around 10min.
    timeout-minutes: 45

    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-latest, macos-latest, windows-latest]
        # see supported versions at
        # https://raw.githubusercontent.com/actions/python-versions/master/versions-manifest.json
        python-version: [2.7, 3.5, 3.6, 3.7, 3.8]
        # test only 2.7 and the latest 3.x on mac
        # test only the latest 3.x on windows
        exclude:
          - os: macos-latest
            python-version: 3.5
          - os: macos-latest
            python-version: 3.6
          - os: macos-latest
            python-version: 3.7
          - os: windows-latest
            python-version: 2.7  # causes a Shapely install error
          - os: windows-latest
            python-version: 3.5
          - os: windows-latest
            python-version: 3.6
          - os: windows-latest
            python-version: 3.7
    env:
      OS: ${{ matrix.os }}
      PYTHON: ${{ matrix.python-version }}
    steps:
    - uses: actions/checkout@v2

    # ----------------
    # Install python and base packages
    # ----------------
    - name: Set up Python ${{ matrix.python-version }} on ${{ runner.os }}
      uses: actions/setup-python@v2
      with:
        python-version: ${{ matrix.python-version }}

    - name: Display python version
      run: |
        python -c "import sys; print(sys.version)"

    - name: Display system information
      run : |
        python -c "import sys; print(sys.maxsize);"
        python -c "import platform; print(platform.uname());"
        python -c "import platform; print(platform.platform());"
        python -c "import platform; print(platform.architecture());"
        python -c "import platform; print(platform.processor());"
        python -c "import platform; print(platform.python_compiler());"

    - name: Upgrade basic packages
      run: |
        python -m pip install --upgrade pip setuptools wheel

    # ----------------
    # Set up pip cache
    # ----------------
    - name: Get Date
      id: get-date
      run: |
        echo "::set-output name=date::$(/bin/date -u "+%Y%m%d")"
      shell: bash

    - uses: actions/cache@v1
      if: startsWith(runner.os, 'Linux')
      with:
        path: ~/.cache/pip
        key: ${{ runner.os }}-pip-${{ steps.get-date.outputs.date }}-${{ hashFiles('**/requirements.txt') }}
        restore-keys: |
          ${{ runner.os }}-pip-

    - uses: actions/cache@v1
      if: startsWith(runner.os, 'macOS')
      with:
        path: ~/Library/Caches/pip
        key: ${{ runner.os }}-pip-${{ steps.get-date.outputs.date }}-${{ hashFiles('**/requirements.txt') }}
        restore-keys: |
          ${{ runner.os }}-pip-

    - uses: actions/cache@v1
      if: startsWith(runner.os, 'Windows')
      with:
        path: ~\AppData\Local\pip\Cache
        key: ${{ runner.os }}-pip-${{ steps.get-date.outputs.date }}-${{ hashFiles('**/requirements.txt') }}
        restore-keys: |
          ${{ runner.os }}-pip-

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

    - name: Install test dependencies
      run: |
        pip install --upgrade -r test/requirements.txt

    - name: Install further test tools
      run: |
        pip install coverage pytest-cov flake8

    # ----------------
    # Install library
    # ----------------
    - name: Install library
      run: |
        pip install .

    # ----------------
    # Run checks and tests
    # ----------------
    - name: Run flake8
      run: |
        flake8 . --count --select=E901,E999,F821,F822,F823 --show-source --statistics --exclude=".svn,CVS,.bzr,.hg,.git,__pycache__,poly_point_isect.py"

    - name: Run tests
      run: |
        python -m pytest --verbose --xdoctest-modules -s --durations=50 -Walways

    # ----------------
    # Code coverage reports
    # ----------------
    # Add 'coverage html -d out_foldername' to add html reports
    # Dont deactivate -Walways here, otherwise some tests fail as warnings
    # are no longer produced.
    - name: Generate code coverage report
      run: |
        coverage run --source imgaug -m pytest --verbose -Walways
        coverage xml
        coverage report

    #- name: Upload coverage report to codacy
    #  uses: codacy/codacy-coverage-reporter-action@master
    #  with:
    #    project-token: ${{ secrets.CODACY_TOKEN }}
    #    coverage-reports: coverage.xml

    - name: Upload coverage to Codecov
      uses: codecov/codecov-action@v1
      with:
        token: ${{ secrets.CODECOV_TOKEN }}
        file: ./coverage.xml
        flags: unittests
        # right now the env_vars argument causes a warning, see
        # https://github.com/codecov/codecov-action/issues/80
        #env_vars: OS,PYTHON
        name: codecov-umbrella
        fail_ci_if_error: false