name: lint

on:
  pull_request:

permissions:
  contents: read

jobs:
  clang-format:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0

    - name: Install clang-format
      run: |
        sudo install -D -m 0644 support/llvm-snapshot.gpg.key \
          /etc/apt/keyrings/apt.llvm.org.asc
        codename=$(lsb_release -cs)
        echo "deb [signed-by=/etc/apt/keyrings/apt.llvm.org.asc]" \
             "https://apt.llvm.org/$codename/" \
             "llvm-toolchain-$codename-21 main" \
          | sudo tee /etc/apt/sources.list.d/llvm.list
        sudo apt-get update
        sudo apt-get install -y clang-format-21

    - name: Run clang-format
      run: |
        find include src -name '*.h' -o -name '*.cc' | \
          xargs clang-format-21 -i -style=file -fallback-style=none
        git diff --exit-code

  cmake-format:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0

    - name: Install cmake-format
      run: pip install --require-hashes -r support/cmake-format-requirements.txt

    - name: Run cmake-format
      run: |
        find . -name CMakeLists.txt -o -name '*.cmake' | \
          xargs cmake-format -i
        git diff --exit-code