name: Code Style Check

on:
  push:
  pull_request:

permissions:
  contents: read

jobs:
  clang-format:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Install clang-format
        run: |
          sudo apt-get update
          sudo apt-get install -y clang-format

      - name: Check C/C++ style
        shell: bash
        run: |
          set -euo pipefail

          mapfile -t files < <(
            git ls-files \
              '*.c' '*.h' '*.cc' '*.cpp' '*.cxx' '*.hpp' '*.hxx' \
              | grep -Ev '^(limine/|third_party/|build/|build-cmake/)' || true
          )

          if [[ ${#files[@]} -eq 0 ]]; then
            echo "No C/C++ files to check."
            exit 0
          fi

          for f in "${files[@]}"; do
            clang-format -i "$f"
          done

          if ! git diff --quiet -- "${files[@]}"; then
            echo "Code style check failed. Please run clang-format on changed files."
            echo ""
            git diff -- "${files[@]}"
            exit 1
          fi

          echo "Code style check passed."