name: Static Analysis

on:
  push:
    branches:
    - 'main'
    paths-ignore:
      - 'docs/**'
  pull_request:
    branches:
      - '**'
    paths-ignore:
      - 'docs/**'

permissions:
  contents: read

jobs:
  clang_tidy:
    name: Clang-Tidy
    runs-on: [runs-on, runner=16cpu-linux-x64, "run-id=${{ github.run_id }}", "extras=s3-cache"]
    container:
      image: px4io/px4-dev:v1.17.0-beta1
    steps:
    - uses: runs-on/action@v2
    - uses: actions/checkout@v4
      with:
        fetch-depth: 0
        fetch-tags: true

    - name: Configure Git Safe Directory
      run: git config --system --add safe.directory '*'

    - name: Restore Compiler Cache
      id: cc_restore
      uses: actions/cache/restore@v4
      with:
        path: ~/.ccache
        key: ccache-clang-tidy-${{ github.head_ref || github.ref_name }}
        restore-keys: |
          ccache-clang-tidy-${{ github.head_ref || github.ref_name }}-
          ccache-clang-tidy-main-
          ccache-clang-tidy-

    - name: Configure Compiler Cache
      run: |
        mkdir -p ~/.ccache
        echo "base_dir = ${GITHUB_WORKSPACE}" > ~/.ccache/ccache.conf
        echo "compression = true" >> ~/.ccache/ccache.conf
        echo "compression_level = 6" >> ~/.ccache/ccache.conf
        echo "max_size = 120M" >> ~/.ccache/ccache.conf
        echo "hash_dir = false" >> ~/.ccache/ccache.conf
        echo "compiler_check = content" >> ~/.ccache/ccache.conf
        ccache -s
        ccache -z

    - name: Run Clang-Tidy Analysis
      run: make -j16 clang-tidy

    - name: Compiler Cache Stats
      if: always()
      run: ccache -s

    - name: Save Compiler Cache
      if: always()
      uses: actions/cache/save@v4
      with:
        path: ~/.ccache
        key: ${{ steps.cc_restore.outputs.cache-primary-key }}