template.yml

name: Test template
on:
  push:
    branches: gh-pages
  pull_request:
jobs:
  check-template:
    name: ${{ matrix.lesson-name }} (${{ matrix.os-name }})
    if: github.repository == 'carpentries/styles'
    runs-on: ${{ matrix.os }}
    continue-on-error: ${{ matrix.experimental }}
    strategy:
      fail-fast: false
      matrix:
        lesson: [swcarpentry/shell-novice, datacarpentry/r-intro-geospatial, librarycarpentry/lc-git]
        os: [ubuntu-20.04, macos-latest, windows-latest]
        experimental: [false]
        include:
          - os: ubuntu-20.04
            os-name: Linux
          - os: macos-latest
            os-name: macOS
          - os: windows-latest
            os-name: Windows
          - lesson: swcarpentry/shell-novice
            lesson-name: (SWC) Shell novice
          - lesson: datacarpentry/r-intro-geospatial
            lesson-name: (DC) R Intro Geospatial
          - lesson: librarycarpentry/lc-git
            lesson-name: (LC) Intro to Git
          - lesson: datacarpentry/astronomy-python
            lesson-name: (DC) Foundations of Astronomical Data Science
            experimental: true
            os: ubuntu-20.04
            os-name: Linux
          - lesson: carpentries/lesson-example
            lesson-name: (CP) Lesson Example
            experimental: false
            os: ubuntu-20.04
            os-name: Linux
    defaults:
      run:
        shell: bash # forces 'Git for Windows' on Windows
    env:
      RSPM: 'https://packagemanager.rstudio.com/cran/__linux__/focal/latest'
    steps:
      - name: Set up Ruby
        uses: ruby/setup-ruby@v1
        with:
          ruby-version: '2.7'
          bundler-cache: true

      - name: Set up Python
        uses: actions/setup-python@v2
        with:
          python-version: '3.x'

      - name: Install GitHub Pages, Bundler, and kramdown gems
        run: |
          gem install github-pages bundler kramdown kramdown-parser-gfm

      - name: Install Python modules
        run: |
          if [[ $RUNNER_OS == macOS || $RUNNER_OS == Linux ]]; then
            python3 -m pip install --upgrade pip setuptools wheel pyyaml==5.3.1 requests
          elif [[ $RUNNER_OS == Windows ]]; then
            python -m pip install --upgrade pip setuptools wheel pyyaml==5.3.1 requests
          fi

      - name: Checkout the ${{ matrix.lesson }} lesson
        uses: actions/checkout@master
        with:
          repository: ${{ matrix.lesson }}
          path: lesson
          fetch-depth: 0

      - name: Sync lesson with carpentries/styles
        working-directory: lesson
        run: |
          echo "::group::Fetch Styles"
          if [[ -n "${{ github.event.pull_request.number }}" ]]
          then
            ref="refs/pull/${{ github.event.pull_request.number }}/head"
          else
            ref="gh-pages"
          fi

          git config --global user.email "team@carpentries.org"
          git config --global user.name "The Carpentries Bot"

          git remote add styles https://github.com/carpentries/styles.git
          git fetch styles $ref:styles-ref
          echo "::endgroup::"
          echo "::group::Synchronize Styles"
          # Sync up only if necessary
          if [[ $(git rev-list --count HEAD..styles-ref) != 0 ]]
          then

            # The merge command below might fail for lessons that use remote theme
            # https://github.com/carpentries/carpentries-theme
            echo "Testing merge using recursive strategy, accepting upstream changes without committing"
            if ! git merge -s recursive -Xtheirs --no-commit styles-ref
            then

              # Remove "deleted by us, unmerged" files from the staging area.
              # these are the files that were removed from the lesson
              # but are still present in the carpentries/styles repo
              echo "Removing previously deleted files"
              git rm $(git diff --name-only --diff-filter=DU)

              # If there are still "unmerged" files,
              # let's raise an error and look into this more closely
              if [[ -n $(git diff --name-only --diff-filter=U) ]]
              then
                echo "There were unmerged files in ${{ matrix.lesson-name }}:"
                echo "$(git diff --compact-summary --diff-filter=U)"
                exit 1
              fi
            fi

            echo "Committing changes"
            git commit -m "Sync lesson with carpentries/styles"
          fi
          echo "::endgroup::"

      - name: Look for R-markdown files
        id: check-rmd
        working-directory: lesson
        run: |
          echo "::set-output name=count::$(shopt -s nullglob; files=($(find . -iname '*.Rmd')); echo ${#files[@]})"

      - name: Set up R
        if: steps.check-rmd.outputs.count != 0
        uses: r-lib/actions/setup-r@master
        with:
          r-version: 'release'

      - name: Install needed packages
        if: steps.check-rmd.outputs.count != 0
        working-directory: lesson
        run: |
          source('bin/dependencies.R')
          install_required_packages(.libPaths()[1])
        shell: Rscript {0}

      - name: Query dependencies
        if: steps.check-rmd.outputs.count != 0
        working-directory: lesson
        run: |
          source('bin/dependencies.R')
          deps <- identify_dependencies()
          create_description(deps)
          use_bioc_repos()
          saveRDS(remotes::dev_package_deps(dependencies = TRUE), ".github/depends.Rds", version = 2)
          writeLines(sprintf("R-%i.%i", getRversion()$major, getRversion()$minor), ".github/R-version")
        shell: Rscript {0}

      - name: Restore Package Cache
        if: runner.os != 'Windows' && steps.check-rmd.outputs.count != 0
        uses: actions/cache@v2
        with:
          path: ${{ env.R_LIBS_USER }}
          key: ${{ runner.os }}-${{ hashFiles('.github/R-version') }}-1-${{ hashFiles('.github/depends.Rds') }}
          restore-keys: ${{ runner.os }}-${{ hashFiles('.github/R-version') }}-1-

      - name: Install stringi from source
        if: runner.os == 'Linux' && steps.check-rmd.outputs.count != 0
        run: install.packages('stringi', repos='https://cloud.r-project.org')
        shell: Rscript {0}

      - name: Install system dependencies for R packages
        if: runner.os == 'Linux' && steps.check-rmd.outputs.count != 0
        working-directory: lesson
        run: |
          while read -r cmd
          do
            eval sudo $cmd || echo "Nothing to update"
          done < <(Rscript -e 'cat(remotes::system_requirements("ubuntu", "20.04"), sep = "\n")')

      - run: make site
        working-directory: lesson

      - run: make lesson-check-all
        working-directory: lesson