name: macos

concurrency:
  group: macos-${{ github.head_ref || github.ref }}
  cancel-in-progress: true

on:
  push:
    branches:
      - master
      # Stable branches such as 0.56 or 1.0
      - '[0-9]+.[0-9]+'
    paths:
      - "mesonbuild/**"
      - "test cases/**"
      - "unittests/**"
      - ".github/workflows/macos.yml"
      - "run*tests.py"
  pull_request:
    paths:
      - "mesonbuild/**"
      - "test cases/**"
      - "unittests/**"
      - ".github/workflows/macos.yml"
      - "run*tests.py"

permissions:
  contents: read

jobs:
  unittests-appleclang:
    runs-on: macos-latest
    steps:
    - uses: actions/checkout@v4
    - run: |
        export PATH="$HOME/Library/Python/3.9/bin:$PATH"
        /usr/bin/python3 -m pip install --upgrade pip
        /usr/bin/python3 -m pip install pytest pytest-xdist pytest-subtests fastjsonschema
    - run: brew install pkg-config ninja llvm qt@5
    - env:
        CPPFLAGS: "-I/opt/homebrew/include"
        LDFLAGS: "-L/opt/homebrew/lib"
        MESON_CI_JOBNAME: unittests-appleclang
        MESON_UNIT_TEST_BACKEND: ninja
        HOMEBREW_NO_AUTO_UPDATE: 1
        # These cannot evaluate anything, so we cannot set PATH or SDKROOT here
      run: |
        export SDKROOT="$(xcodebuild -version -sdk macosx Path)"
        export PATH="$HOME/Library/Python/3.9/bin:$HOME/tools:/opt/homebrew/opt/qt@5/bin:/opt/homebrew/opt/llvm/bin:$PATH"
        export PKG_CONFIG_PATH="/Applications/Xcode.app/Contents/Developer/Library/Frameworks/Python3.framework/Versions/Current/lib/pkgconfig:/opt/homebrew/opt/qt@5/lib/pkgconfig:$PKG_CONFIG_PATH"
        /usr/bin/python3 ./run_unittests.py


  project-tests-appleclang:
    runs-on: macos-latest
    strategy:
      fail-fast: false
      matrix:
        include:
        - NAME: macos-clang
          unity: off
        - NAME: macos-clang-unity
          unity: on

    name: ${{ matrix.NAME }}
    env:
      MESON_CI_JOBNAME: ${{ matrix.NAME }}
      HOMEBREW_NO_AUTO_UPDATE: 1

    steps:
    - uses: actions/checkout@v4
    # Avoid picking up an older version of LLVM that does not work.
    - run: brew update
    # github actions overwrites brew's python. Force it to reassert itself, by running in a separate step.
    - name: unbreak python in github actions
      run: |
        find /usr/local/bin -lname '*/Library/Frameworks/Python.framework/*' -delete
        sudo rm -rf /Library/Frameworks/Python.framework/
        brew install --force python3 && brew unlink python3 && brew unlink python3 && brew link --overwrite python3
        # Delete nonsensical PEP 668 breakage. It is the wrong solution to the problem and isn't designed to be
        # productive -- only victim blaming -- however it bites particularly badly because this is a container/VM
        # See commit 5c479d7a13a518c18ccb4dc3b6bdd7bfc2a9bdb5 for a more thorough analysis.
        find /opt/homebrew/Cellar/python* -name EXTERNALLY-MANAGED -print0 | xargs -0 rm -vf
    # use python3 from homebrew because it is a valid framework, unlike the actions one:
    # https://github.com/actions/setup-python/issues/58
    - run: brew install pkg-config ninja llvm qt@5 boost ldc hdf5 openmpi lapack scalapack sdl2 boost-python3 gtk-doc zstd ncurses objfw libomp
    - run: |
        python3 -m pip install cython
    - env:
        CPPFLAGS: "-I/opt/homebrew/include"
        LDFLAGS: "-L/opt/homebrew/lib"
        MESON_ARGS: --unity=${{ matrix.unity }}
        XML_CATALOG_FILES: "/opt/homebrew/etc/xml/catalog"
        CI: 1
        # These cannot evaluate anything, so we cannot set PATH or SDKROOT here
      run: |
        export SDKROOT="$(xcodebuild -version -sdk macosx Path)"
        # Append LLVM's bin directory to PATH to prioritise Apple Clang over Homebrew Clang.
        # We need this to avoid objfw test failures.
        export PATH="$HOME/tools:/opt/homebrew/opt/qt@5/bin:/opt/homebrew/opt/ncurses/bin:$PATH:/opt/homebrew/opt/llvm/bin"
        export PKG_CONFIG_PATH="/opt/homebrew/opt/qt@5/lib/pkgconfig:/opt/homebrew/opt/lapack/lib/pkgconfig:/opt/homebrew/opt/ncurses/lib/pkgconfig:$PKG_CONFIG_PATH"
        ./run_project_tests.py --backend=ninja