name: CI

on:
  push:
    paths-ignore:
      - 'doc/**'
      - 'scripts/**'
      - 'LICENSE.txt'
      - 'README.md'
  pull_request:
    paths-ignore:
      - 'doc/**'
      - 'scripts/**'
      - 'LICENSE.txt'
      - 'README.md'

env:
  CTEST_OUTPUT_ON_FAILURE: ON
  CTEST_PARALLEL_LEVEL: 2

jobs:
  clang-tidy:
    if: github.event_name == 'push' || github.event.pull_request.head.repo.full_name != github.repository
    runs-on: ubuntu-22.04

    strategy:
      fail-fast: false
      matrix:
        flags: ["", "-D DOCTEST_CONFIG_DISABLE"]

    steps:
      - uses: actions/checkout@v2

      - name: Install
        run: sudo apt-get install -y ninja-build clang-tidy-14

      - name: Generate
        run: cmake -B build -S . -G Ninja -D CMAKE_CXX_COMPILER=clang++ -D CMAKE_EXPORT_COMPILE_COMMANDS=ON -D CMAKE_CXX_CLANG_TIDY="clang-tidy-14;-warnings-as-errors=*" -D CMAKE_CXX_FLAGS="${{ matrix.flags }} -Wno-unknown-pragmas"
        # (clang-diagnostic-)unknown-pragmas is disabled due to https://github.com/clangd/clangd/issues/1167

      - name: Build
        run: cmake --build build