latex-python-ci.yml

name: LaTeX + Python CI
on:
  pull_request:
    branches:
      - main
jobs:
  format-check:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Install latexindent binary
        run: |
          set -e
          curl -L -o latexindent-linux \
            https://github.com/cmhughes/latexindent.pl/releases/latest/download/latexindent-linux
          chmod +x latexindent-linux
          sudo mv latexindent-linux /usr/local/bin/latexindent
          echo "latexindent installed at:"
          which latexindent || echo "latexindent not found on PATH"

          echo "latexindent verbose version info:"
          latexindent -vv

      - name: Check LaTeX formatting with latexindent (dry-run)
        run: |
          set -e
          tmp_file="tmp_check_file"
          for ext in tex sty cls; do
            find . -name "*.${ext}" -type f -not -name "$tmp_file" | while read -r file; do
              latexindent -m -l=.latexindent.yml -o="$tmp_file" "$file"
              if ! diff -qZb "$file" "$tmp_file.${ext}" > /dev/null; then
                echo "::error file=$file::File is not properly formatted. Please run latexindent locally."
                rm -f "$tmp_file.${ext}"
                exit 1
              fi
              rm -f "$tmp_file.${ext}"
            done || exit 1
          done
          echo "All LaTeX files are properly formatted!"

      - name: Install Python format tools
        run: |
          set -e
          python -m pip install --upgrade pip
          pip install ruff

      - name: Check Python + Notebook formatting (Ruff)
        run: |
          set -e

          echo "Checking .py files formatting..."
          PY_FAILED=0
          for file in $(find . -name "*.py" -not -path "*/.*"); do
            if ! ruff format --check --config ./pyproject.toml "$file"; then
              echo "::error file=$file::Formatting check failed for $file."
              PY_FAILED=1
            fi
          done

          echo "Checking .ipynb files formatting..."
          NB_FAILED=0
          for file in $(find . -name "*.ipynb" -not -path "*/.*"); do
            if ! ruff format --check --config ./pyproject.toml "$file"; then
              echo "::error file=$file::Formatting check failed for $file."
              echo "TIP: There is likely a trailing newline at the end of a code cell."
              ruff format --diff --config ./pyproject.toml "$file"
              NB_FAILED=1
            fi
          done

          if [ $PY_FAILED -ne 0 ] || [ $NB_FAILED -ne 0 ]; then
            echo "Formatting check failed. You can check by running 'ruff format .' locally."
            exit 1
          fi
          
          echo "All files passed formatting!"

  build:
    needs: format-check
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        tex:
          - test/testLecture.tex
          - test/testExercise.tex
          - test/testExam.tex
    steps:
      - uses: actions/checkout@v4

      - name: Submodule-like setup
        run: |
          mkdir -p ../course_template
          rsync -av --exclude='.git' . ../course_template/
          mkdir -p ../../course_template
          ln -s "$PWD/theme" ../../course_template/theme || true
          ln -s "$PWD/style" ../../course_template/style || true

      - uses: xu-cheng/latex-action@v3
        with:
          root_file: ${{ matrix.tex }}
          args: -pdf -interaction=nonstopmode -halt-on-error -shell-escape