name: Linting
on: [push, pull_request]

jobs:
  iwyu:
    name: Include What You Use
    runs-on: ubuntu-latest
    container:
      image: debian:sid-slim
    steps:
      - name: Install dependencies
        run: |
          apt-get update
          apt-get install -y --no-install-recommends ca-certificates clang-14 cmake git iwyu libbenchmark-dev libcurl4-openssl-dev ninja-build zlib1g-dev

      - name: Checkout source
        uses: actions/checkout@v3
        with:
          submodules: true

      - name: "CMake Configure"
        run: cmake -GNinja -DRUN_IWYU=ON -DCMAKE_C_COMPILER=clang-14 -DCMAKE_CXX_COMPILER=clang++-14 -S ${GITHUB_WORKSPACE} -B ${GITHUB_WORKSPACE}/_build

      - name: Build
        run: cmake --build ${GITHUB_WORKSPACE}/_build 2>&1 | tee ${GITHUB_WORKSPACE}/output.txt

      - name: Check build output
        run: if egrep -q 'should (add|remove) these lines' ${GITHUB_WORKSPACE}/output.txt; then exit 1; fi

      #- name: "CMake Configure"
      #  run: cmake -GNinja -DCMAKE_EXPORT_COMPILE_COMMANDS=ON -S ${GITHUB_WORKSPACE} -B ${GITHUB_WORKSPACE}/_build

      #- name: "Run IWYU"
      #  run: iwyu_tool -p ${GITHUB_WORKSPACE}/_build core push pull -- -Xiwyu --mapping_file=${GITHUB_WORKSPACE}/cmake/googletest.imp -Xiwyu --no_fwd_decls 2>&1 | tee ${{ github.workspace }}/output.txt

  format:
    name: Clang Format
    runs-on: ubuntu-22.04
    steps:
      - name: Checkout source
        uses: actions/checkout@v3

      # clang-format comes pre-installed
      # https://github.com/actions/runner-images/blob/main/images/ubuntu/Ubuntu2204-Readme.md

      - name: Run clang-format
        run: find . -type f \( -name '*.c' -o -name '*.cc' -o -name '*.cpp' -o -name '*.cxx' -o -name '*.o' -o -name '*.h' -o -name '*.hpp' -o -name '*.hxx' \) -exec clang-format-15 -style=file -i {} \;

      - name: Check for changes
        run: git diff --exit-code