name: Build Example PDF files

on: [push, pull_request]

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v4
      with:
        fetch-depth: 0 # otherwise, there would be errors pushing refs to the destination repository.
    - name: Setup pandoc
      env:
        PANDOC_VERSION: "3.5"
      run: |
        wget -qO- https://github.com/jgm/pandoc/releases/download/${PANDOC_VERSION}/pandoc-${PANDOC_VERSION}-linux-amd64.tar.gz | sudo tar xzf - --strip-components 1 -C /usr/local/
    - name: Setup TexLive
      env:
        REMOTE: http://mirror.ctan.org/systems/texlive/tlnet
        INSTALL: '/tmp/install-texlive'
      run: |
        mkdir -p ${INSTALL}
        curl -sSL ${REMOTE}/install-tl-unx.tar.gz | tar -xzv -C $INSTALL --strip-components=1
        sudo ${INSTALL}/install-tl -no-gui -profile .texlife.profile
        VERSION=$($INSTALL/install-tl --version | grep 'version' | grep -o '[0-9]\{4\}')
        PLATFORM=$($INSTALL/install-tl --print-platform)
        TEXLIVE_DIR="/usr/local/texlive/${VERSION}"
        TEXBIN="/usr/local/texlive/${VERSION}/bin/${PLATFORM}"
        echo "${TEXBIN}" >> $GITHUB_PATH
        sudo chown -hR $(whoami) "$TEXLIVE_DIR"
    - name: Initialization for tlmgr
      run: |
        sudo apt-get update -qq && sudo apt-get install xzdec -y
        tlmgr init-usertree
    - name: Setup fonts and image convertion tool
      run: sudo apt-get update -qq && sudo apt-get install fonts-noto-cjk poppler-utils -y
    - name: Setup Python
      uses: actions/setup-python@v5
      with:
        python-version: '3.13'
    - name: Install python filters
      run: |
        python -m pip install --upgrade pip
        pip install pandoc-latex-environment
    - name: Install LaTeX packages
      run: |
        tlmgr install adjustbox background bidi csquotes footmisc footnotebackref fvextra mdframed pagecolor sourcecodepro sourcesanspro titling ulem upquote xurl hardwrap catchfile
        # trial and error
        tlmgr install letltxmacro zref everypage framed collectbox
        # packages needed for the template
        tlmgr install xecjk filehook unicode-math ucharcat pagecolor babel-german ly1 mweights sourcecodepro sourcesanspro mdframed needspace fvextra footmisc footnotebackref background
        # packages only needed for some examples (that include packages via header-includes)
        tlmgr install awesomebox fontawesome5
        # packages only needed for some examples (example boxes-with-pandoc-latex-environment-and-tcolorbox)
        tlmgr install tcolorbox pgf etoolbox environ trimspaces
    - name: Build examples
      run: cd examples && bash build-examples.sh && cd ..
    - name: Add generated example files
      uses: actions/upload-artifact@v4
      with:
        name: build-files
        path: |
          examples/*/document.pdf
          examples/*/preview.png
    - name: Commit files
      run: |
        git config --local user.email "41898282+github-actions[bot]@users.noreply.github.com"
        git config --local user.name "github-actions[bot]"
        git commit -m "Add generated example files" -a
    - name: Push changes
      uses: ad-m/github-push-action@master
      if: github.event_name == 'push' && github.ref == 'refs/heads/master'
      with:
        github_token: ${{ secrets.GITHUB_TOKEN }}
        branch: ${{ github.ref }}