name: test

on:
  pull_request:
    branches:
      - 'master'
    paths:
      - src/**
      - tests/**
      - config/**
      - .github/workflows/test.yml
  push:
    branches:
      - 'master'
    paths:
      - src/**
      - tests/**
      - config/**
      - .github/workflows/test.yml

jobs:
  test:
    strategy:
      matrix:
        include:
          - os: ubuntu-latest
            label: linux-64
            prefix: /usr/share/miniconda3/envs/test

    name: ${{ matrix.label }}
    runs-on: ${{ matrix.os }}
    steps:
      - uses: actions/checkout@v2

      - name: Install Environment Dependencies
        shell: bash -l {0}
        run: sudo apt-get -y install libimage-exiftool-perl

      - name: Setup Mambaforge
        uses: conda-incubator/setup-miniconda@v2
        with:
          miniforge-variant: Mambaforge
          miniforge-version: latest
          activate-environment: test
          use-mamba: true
          environment-file: config/environment.yml
          python-version: 3.8
          auto-activate-base: false
          use-only-tar-bz2: true

      - name: Set cache date
        run: echo "DATE=$(date +'%Y%m%d')" >> $GITHUB_ENV

      - uses: actions/cache@v2
        with:
          path: ${{ matrix.prefix }}
          key: ${{ matrix.label }}-conda-${{ hashFiles('config/environment.yml') }}-${{ env.DATE }}-${{ env.CACHE_NUMBER }}
        env:
          # Increase this value to reset cache if environment.yml has not changed
          CACHE_NUMBER: 0
        id: cache

      - name: Update environment
        run: mamba env update -n test -f config/environment.yml
        if: steps.cache.outputs.cache-hit != 'true'

      - name: Run Pytest
        shell: bash -l {0}        
        run: python -m pytest