name: mcstas-testsuite
on:
  schedule:
    - cron: '00 02 * * *'  # 02:00 every day

  workflow_dispatch:
    inputs:
      manual-debugging:
        type: boolean
        description: Launch manual debugging tmate for inspection (automatic in case of errors)
        default: false

jobs:
  build:
    strategy:
      fail-fast: false
      matrix:
        include:
          - { os: ubuntu-latest, CC: clang,    CXX: clang++,    python: '3.11' }
  
    name: ${{ matrix.os }}.${{ matrix.CC }}.python-${{ matrix.python }}
    runs-on: ${{ matrix.os }}
    env:
      CC: ${{ matrix.CC }}
      CXX: ${{ matrix.CXX }}
    defaults:
      run:
        shell: bash -el {0}

    steps:
    - name: Checkout
      uses: actions/checkout@v4
      with:
        path: src

    - name: Setup python
      uses: actions/setup-python@v5
      with:
        python-version: ${{ matrix.python }}

    - name: Setup Bison (macOS)
      id: setup-flex-bison-macos
      if: runner.os == 'macOS'
      run: |
           brew install bison flex

    - name: Setup Bison (Windows)
      id: setup-flex-bison-Windows
      if: runner.os == 'Windows'
      run: |
           choco install winflexbison3

    - name: Setup OpenMPI (Linux)
      id: setup-openmpi-nexus-linux-gsl
      if: runner.os == 'Linux'
      run: |
           sudo apt -y install libopenmpi-dev libnexus-dev curl libgsl-dev
           sudo curl -O https://packages.mccode.org/debian/dists/stable/main/binary-amd64/mcpl-1.6.2-deb64.deb
           sudo curl -O https://packages.mccode.org/debian/dists/stable/main/binary-amd64/ncrystal-3.7.1-deb64.deb
           sudo dpkg -i mcpl-1.6.2-deb64.deb ncrystal-3.7.1-deb64.deb
           sudo apt-get -f install

    - name: Setup OpenMPI (macOS-12,13)
      id: setup-openmpi-macos
      if: runner.os == 'macOS' && matrix.os != 'macos-11'
      run: |
           set -e
           set -u
           set -x
           brew install openmpi

    - name: Check versions
      id: version-checks
      run: |
           which python3
           python3 --version
           which cmake
           cmake --version
           #NB: bison and flex in path are actually too old, on mac we
           #inject these via a brew keg later

    - name: Configure build and install mcstas
      id: mcstas-install
      run: |
           if [ "$RUNNER_OS" == "macOS" ]; then export SDKROOT=$(xcrun --sdk macosx --show-sdk-path); fi
           set -e
           set -u
           set -x
           mkdir build_mcstas
           cd build_mcstas
           export EXTRA_ARGS_FOR_CMAKE=""
           if [ "$RUNNER_OS" == "macOS" ]; then export EXTRA_ARGS_FOR_CMAKE="-DBISON_EXECUTABLE=/usr/local/opt/bison/bin/bison -DFLEX_EXECUTABLE=/usr/local/opt/flex/bin/flex"; fi
           if [ "$RUNNER_OS" == "Linux" ]; then export EXTRA_ARGS_FOR_CMAKE="-DNEXUSLIB=/usr/lib -DNEXUSINCLUDE=/usr/include/nexus"; fi
           cmake \
               -DCMAKE_INSTALL_PREFIX=../install_mcstas \
               -S ../src \
               -G "Unix Makefiles" \
               -DMCVERSION="3.99.99" \
               -DMCCODE_BUILD_CONDA_PKG=ON \
               -DBUILD_SHARED_LIBS=ON \
               -DCMAKE_INSTALL_LIBDIR=lib \
               -DCMAKE_BUILD_TYPE=Release \
               -DBUILD_MCSTAS=ON \
               -DMCCODE_USE_LEGACY_DESTINATIONS=OFF \
               -DBUILD_TOOLS=ON \
               -DENABLE_COMPONENTS=ON \
               -DENSURE_MCPL=ON \
               -DENSURE_NCRYSTAL=OFF \
               -DENABLE_CIF2HKL=OFF \
               -DENABLE_NEUTRONICS=OFF \
               ${EXTRA_ARGS_FOR_CMAKE}
           cmake --build . --config Release
           cmake --build . --target install --config Release
           export MCSTAS_EXECUTABLE="mcstas"
           export MCRUN_EXECUTABLE="mcrun"
           if [ "$RUNNER_OS" == "Windows" ];
           then
             export MCSTAS_EXECUTABLE="mcstas.exe"
             export MCRUN_EXECUTABLE="mcrun.bat"
           fi
           test -f "../install_mcstas/bin/${MCSTAS_EXECUTABLE}"
           test -f "../install_mcstas/bin/${MCRUN_EXECUTABLE}"
           test -f "../install_mcstas/share/mcstas/tools/Python/mccodelib/__init__.py"
           test -d "../install_mcstas/share/mcstas/resources/data"
           echo *******************************************************************************
           echo Resulting mccode_config.json:
           echo *******************************************************************************
           cat ../install_mcstas/share/mcstas/tools/Python/mccodelib/mccode_config.json
           echo *******************************************************************************

    - name: Pip install various
      id: pip-install
      run: |
           set -e
           set -u
           set -x
           python3 -mpip install PyYAML ply McStasscript
           if [ "$RUNNER_OS" != "Windows" ];
           then
             python3 -mpip install ncrystal
           fi

    - name: Test suite, 2-core MPI
      id: test-suite
      run: |
           set -e
           set -u
           set -x
           export PATH=$PWD/install_mcstas/bin/:$PATH
           mkdir run_test-suite && cd run_test-suite
           mctest --testdir $PWD --mpi=2 --suffix ${{ matrix.os }}

    - name: 'Tar output files'
      id: tar-package
      if: always()
      run: |
           set -e
           set -u
           set -x
           tar cvfz mcstas-${{ matrix.os }}.${{ matrix.CC }}.python-${{ matrix.python }}_output.tgz run_*

    - name: 'Upload Artifact'
      id: tar-upload
      uses: actions/upload-artifact@v4
      if: always()
      with:
        name: mcstas-artefacts-${{ matrix.os }}.${{ matrix.CC }}.python-${{ matrix.python }}
        path: "mcstas-${{ matrix.os }}.${{ matrix.CC }}.python-${{ matrix.python }}_output.tgz"

    - name: Setup tmate session for manual debugging
      uses: mxschmitt/action-tmate@v3
      if: always() && (inputs.manual-debugging == true && steps.tar-package.outcome != 'success')
      with:
        limit-access-to-actor: true
