name: CI

on:
  push:
    branches:
      - "master"
  pull_request:
    branches:
      - "master"
  schedule:
    # Nightly tests run on master by default:
    #   Scheduled workflows run on the latest commit on the default or base branch.
    #   (from https://help.github.com/en/actions/reference/events-that-trigger-workflows#scheduled-events-schedule)
    - cron: "0 0 * * *"


jobs:
  unix:
    runs-on: ${{ matrix.os }}
    name: ${{ matrix.name }}
    env:
      CCACHE_BASEDIR: "${{ github.workspace }}"
      CCACHE_DIR: "${{ github.workspace }}/.ccache"
      CCACHE_COMPRESS: true
      CCACHE_COMPRESSLEVEL: 6
      CCACHE_MAXSIZE: 400M
    strategy:
      fail-fast: false
      matrix:
        include:
          - name: Linux CUDA 10.0
            os: ubuntu-latest
            python-version: "3.7"
            cuda-version: "10.0"
            OPENCL: false
            CMAKE_FLAGS: |
              -DOPENMM_BUILD_CUDA_TESTS=OFF \
              -DOPENMM_BUILD_OPENCL_TESTS=OFF \
              -DOPENMM_BUILD_CPU_LIB=OFF \
              -DOPENMM_BUILD_PYTHON_WRAPPERS=OFF \
              -DOPENMM_BUILD_REFERENCE_TESTS=OFF \
              -DOPENMM_BUILD_SERIALIZATION_TESTS=OFF \
              -DOPENMM_BUILD_C_AND_FORTRAN_WRAPPERS=OFF \
              -DOPENMM_BUILD_EXAMPLES=OFF \
              -DOPENCL_LIBRARY=/usr/local/cuda-10.0/lib64/libOpenCL.so \
              -DCUDA_CUDART_LIBRARY=/usr/local/cuda-10.0/lib64/libcudart.so \
              -DCUDA_NVCC_EXECUTABLE=/usr/local/cuda-10.0/bin/nvcc \
              -DCUDA_SDK_ROOT_DIR=/usr/local/cuda-10.0/ \
              -DCUDA_TOOLKIT_INCLUDE=/usr/local/cuda-10.0/include \
              -DCUDA_TOOLKIT_ROOT_DIR=/usr/local/cuda-10.0/ \

          - name: Linux CUDA 11.2
            os: ubuntu-latest
            python-version: "3.7"
            OPENCL: false
            cuda-version: "11.2"
            CMAKE_FLAGS: |
              -DOPENMM_BUILD_CUDA_TESTS=OFF \
              -DOPENMM_BUILD_OPENCL_TESTS=OFF \
              -DOPENMM_BUILD_CPU_LIB=OFF \
              -DOPENMM_BUILD_PYTHON_WRAPPERS=OFF \
              -DOPENMM_BUILD_REFERENCE_TESTS=OFF \
              -DOPENMM_BUILD_SERIALIZATION_TESTS=OFF \
              -DOPENMM_BUILD_C_AND_FORTRAN_WRAPPERS=OFF \
              -DOPENMM_BUILD_EXAMPLES=OFF \
              -DOPENCL_LIBRARY=/usr/local/cuda-11.2/lib64/libOpenCL.so \
              -DCUDA_CUDART_LIBRARY=/usr/local/cuda-11.2/lib64/libcudart.so \
              -DCUDA_NVCC_EXECUTABLE=/usr/local/cuda-11.2/bin/nvcc \
              -DCUDA_SDK_ROOT_DIR=/usr/local/cuda-11.2/ \
              -DCUDA_TOOLKIT_INCLUDE=/usr/local/cuda-11.2/include \
              -DCUDA_TOOLKIT_ROOT_DIR=/usr/local/cuda-11.2/ \

          - name: Linux AMD OpenCL
            os: ubuntu-latest
            python-version: "3.7"
            OPENCL: true
            cuda-version: ""
            CMAKE_FLAGS: |
              -DOPENMM_BUILD_OPENCL_LIB=ON \
              -DOPENMM_BUILD_OPENCL_TESTS=ON \
              -DOPENMM_BUILD_STATIC_LIB=OFF \
              -DOPENMM_BUILD_CPU_LIB=OFF \
              -DOPENMM_BUILD_REFERENCE_TESTS=OFF \
              -DOPENMM_BUILD_SERIALIZATION_TESTS=OFF \
              -DOPENMM_BUILD_PME_PLUGIN=OFF \
              -DOPENMM_BUILD_AMOEBA_PLUGIN=OFF \
              -DOPENMM_BUILD_PYTHON_WRAPPERS=OFF \
              -DOPENMM_BUILD_C_AND_FORTRAN_WRAPPERS=OFF \
              -DOPENMM_BUILD_EXAMPLES=OFF \
              -DOPENCL_INCLUDE_DIR=${GITHUB_WORKSPACE}/AMDAPPSDK/include \
              -DOPENCL_LIBRARY=${GITHUB_WORKSPACE}/AMDAPPSDK/lib/x86_64/libOpenCL.so \

          - name: Linux CPU Python 3.7 with static lib
            os: ubuntu-latest
            python-version: "3.7"
            OPENCL: false
            cuda-version: ""
            CC: $CCACHE/clang
            CXX: $CCACHE/clang++
            CMAKE_FLAGS: |
              -DOPENMM_BUILD_STATIC_LIB=ON \
              -DOPENMM_BUILD_OPENCL_LIB=OFF \
              -DOPENMM_BUILD_OPENCL_TESTS=OFF \

          - name: Linux CPU Python 3.7 with condaforge compilers
            python-version: "3.7"
            os: ubuntu-latest
            OPENCL: false
            cuda-version: ""
            compilers: conda-forge
            CMAKE_FLAGS: |
              -DOPENMM_BUILD_OPENCL_LIB=OFF \
              -DOPENMM_BUILD_OPENCL_TESTS=OFF \

          - name: Linux CPU Python 3.7
            python-version: "3.7"
            os: ubuntu-latest
            OPENCL: false
            cuda-version: ""
            CMAKE_FLAGS: |
              -DOPENMM_BUILD_OPENCL_LIB=OFF \
              -DOPENMM_BUILD_OPENCL_TESTS=OFF \

          - name: Linux CPU Python 3.11
            python-version: "3.11"
            os: ubuntu-latest
            OPENCL: false
            cuda-version: ""
            CMAKE_FLAGS: |
              -DOPENMM_BUILD_OPENCL_LIB=OFF \
              -DOPENMM_BUILD_OPENCL_TESTS=OFF \

          - name: Linux CPU Pypy 3.7
            python-version: "3.7.*=*pypy*"
            os: ubuntu-latest
            OPENCL: false
            cuda-version: ""
            CMAKE_FLAGS: |
              -DOPENMM_BUILD_OPENCL_LIB=OFF \
              -DOPENMM_BUILD_OPENCL_TESTS=OFF \

          - name: MacOS Intel CPU/OpenCL Python 3.11
            python-version: "3.11"
            os: macos-latest
            OPENCL: false
            cuda-version: ""
            CMAKE_FLAGS: |
              -DOPENMM_BUILD_OPENCL_LIB=ON \
              -DOPENMM_BUILD_OPENCL_TESTS=OFF \

          - name: MacOS M1 CPU arm64 Python 3.11
            python-version: "3.11"
            os: M1-arm64
            OPENCL: false
            cuda-version: ""
            compilers: conda-forge
            CMAKE_FLAGS: |
              -DOPENMM_BUILD_OPENCL_LIB=ON \
              -DOPENMM_BUILD_OPENCL_TESTS=OFF \


    steps:
      - uses: actions/checkout@v2

      - uses: conda-incubator/setup-miniconda@v2
        name: "Prepare base dependencies (M1)"
        if: matrix.os == 'M1-arm64'
        with:
          python-version: ${{ matrix.python-version }}
          activate-environment: build
          installer-url: https://github.com/conda-forge/miniforge/releases/latest/download/Miniforge3-MacOSX-arm64.sh#${{ github.run_number }}
          environment-file: devtools/ci/gh-actions/conda-envs/build-${{ matrix.os }}.yml
          auto-activate-base: false

      - uses: conda-incubator/setup-miniconda@v2
        name: "Prepare base dependencies"
        if: matrix.os != 'M1-arm64'
        with:
          python-version: ${{ matrix.python-version }}
          activate-environment: build
          environment-file: devtools/ci/gh-actions/conda-envs/build-${{ matrix.os }}.yml
          auto-activate-base: false

      - name: "Install CUDA on Ubuntu (if needed)"
        if: matrix.cuda-version != '' && startsWith(matrix.os, 'ubuntu')
        env:
          CUDA_VERSION: ${{ matrix.cuda-version }}
        run: source devtools/ci/gh-actions/scripts/install_cuda.sh

      - name: "Install OpenCL on Ubuntu (if needed)"
        if: matrix.OPENCL == true && startsWith(matrix.os, 'ubuntu')
        run: source devtools/ci/gh-actions/scripts/install_amd_opencl.sh

      - name: "Install conda-forge compilers on Ubuntu or M1 (if needed)"
        if: matrix.compilers == 'conda-forge'
        shell: bash -l {0}
        run: conda install -c conda-forge compilers

      - name: "Set SDK on MacOS (if needed)"
        if: startsWith(matrix.os, 'macos')
        run: source devtools/ci/gh-actions/scripts/install_macos_sdk.sh

      - name: "Prepare ccache"
        id: prepare-ccache
        shell: bash -l {0}
        run: |
          echo "::set-output name=key::$(echo "${{ matrix.name }}" | tr -d ' .')"
          echo "::set-output name=timestamp::$(date +%Y%m%d-%H%M%S)"

          ccache -p
          ccache -z

      - name: "Restore ccache"
        uses: actions/cache@v1.1.0
        with:
          path: .ccache
          key: ccache-${{ secrets.CACHE_VERSION }}-${{ steps.prepare-ccache.outputs.key }}-${{ steps.prepare-ccache.outputs.timestamp }}
          restore-keys: |
            ccache-${{ secrets.CACHE_VERSION }}-${{ steps.prepare-ccache.outputs.key }}-

      - name: "Configure build with CMake (M1)"
        shell: bash -l {0}
        if: matrix.os == 'M1-arm64'
        run: |
          mkdir build
          cd build

          /usr/bin/arch -arch arm64 cmake .. \
            -DCMAKE_INSTALL_PREFIX=${CONDA_PREFIX} \
            -DCMAKE_PREFIX_PATH=${CONDA_PREFIX} \
            -DCMAKE_C_COMPILER_LAUNCHER=ccache \
            -DCMAKE_CXX_COMPILER_LAUNCHER=ccache \
            ${{ matrix.CMAKE_FLAGS }}

      - name: "Configure build with CMake"
        shell: bash -l {0}
        if: matrix.os != 'M1-arm64'
        run: |
          mkdir build
          cd build

          cmake .. \
            -DCMAKE_INSTALL_PREFIX=${CONDA_PREFIX} \
            -DCMAKE_PREFIX_PATH=${CONDA_PREFIX} \
            -DCMAKE_C_COMPILER_LAUNCHER=ccache \
            -DCMAKE_CXX_COMPILER_LAUNCHER=ccache \
            ${{ matrix.CMAKE_FLAGS }}

      - name: "Build OpenMM"
        shell: bash -l {0}
        run: |
          cd build
          make -j2 install

      - name: "Build Python wrappers"
        shell: bash -l {0}
        if: ${{ !contains(matrix.CMAKE_FLAGS, 'OPENMM_BUILD_PYTHON_WRAPPERS=OFF') }}
        run: |
          cd build
          make -j2 PythonInstall

      - name: "Check ccache performance"
        shell: bash -l {0}
        run: ccache -s

      - name: "Test OpenMM"
        shell: bash -l {0}
        id: testcore
        run: |
          set -x
          cd build
          python ../devtools/run-ctest.py --parallel 2 --timeout 600 --job-duration 900 --attempts 3

          if [[ ${{ matrix.os }} == ubuntu-* ]]; then SHLIB=so; else SHLIB=dylib; fi
          # This is always built
          test -f ${CONDA_PREFIX}/lib/libOpenMM.$SHLIB
          # With CUDA, we _expect_ CUDA plugins :)
          if [[ "${{ matrix.cuda-version }}" != "" ]]; then
            test -f ${CONDA_PREFIX}/lib/plugins/libOpenMMCUDA.$SHLIB
            # TODO: Check with Peter why this is not there. Maybe we need an extra flag?
            # test -f ${CONDA_PREFIX}/lib/plugins/libOpenMMCudaCompiler.$SHLIB
          fi
          # OpenCL should also be there for CUDA and, well, OpenCL
          if [[ "${{ matrix.cuda-version }}" != "" || ${{ matrix.OPENCL }} == true ]]; then
            test -f ${CONDA_PREFIX}/lib/plugins/libOpenMMOpenCL.$SHLIB
          # CPU builds should provide both CPU and PME
          else
            test -f ${CONDA_PREFIX}/lib/plugins/libOpenMMCPU.$SHLIB
            test -f ${CONDA_PREFIX}/lib/plugins/libOpenMMPME.$SHLIB
          fi

      - name: "Test Python wrappers"
        shell: bash -l {0}
        if: ${{ !contains(matrix.CMAKE_FLAGS, 'OPENMM_BUILD_PYTHON_WRAPPERS=OFF') && (steps.testcore.outcome == 'failure' || steps.testcore.outcome == 'success') }}
        run: |
          set -x
          python -m openmm.testInstallation
          python -c "import openmm as mm; print('---Loaded---', *mm.pluginLoadedLibNames, '---Failed---', *mm.Platform.getPluginLoadFailures(), sep='\n')"
          cd build/python/tests
          python -m pytest -v -n 2

      - name: "Cleanup self-hosted runner (M1)"
        shell: bash -l {0}
        if: matrix.os == 'M1-arm64'
        run: |
          rm -rf /Users/runner/miniconda3/*

  windows:
    runs-on: windows-latest
    name: ${{ matrix.name }}
    env:
      # `make pythoninstall` will always put the files in the workspace unit
      # workaround: make sure conda envs are created in the same unit as workspace
      CONDA_ENVS_PATH: "D:/conda-envs"
      CCACHE_BASEDIR: "${{ github.workspace }}"
      CCACHE_DIR: "${{ github.workspace }}\\.ccache"
      CCACHE_COMPRESS: true
      CCACHE_COMPRESSLEVEL: 6
      CCACHE_MAXSIZE: 400M

    strategy:
      fail-fast: false
      matrix:
        include:
          - name: Windows CUDA 11.2 Python 3.11
            python-version: "3.11"
            cuda-version: "11.2"
            CMAKE_FLAGS: |
              -DCUDA_TOOLKIT_ROOT_DIR="%CUDA_TOOLKIT_ROOT_DIR%" ^
              -DOPENMM_BUILD_CUDA_TESTS=OFF ^
              -DOPENMM_BUILD_OPENCL_TESTS=OFF ^
              -DOPENMM_BUILD_CPU_LIB=ON ^
              -DOPENMM_BUILD_PYTHON_WRAPPERS=ON ^
              -DOPENMM_BUILD_REFERENCE_TESTS=ON ^
              -DOPENMM_BUILD_SERIALIZATION_TESTS=ON ^
              -DOPENMM_BUILD_C_AND_FORTRAN_WRAPPERS=ON ^
              -DOPENMM_BUILD_EXAMPLES=ON ^

    steps:
      - uses: actions/checkout@v2

      - uses: conda-incubator/setup-miniconda@v2
        name: "Prepare base dependencies"
        with:
          python-version: ${{ matrix.python-version }}
          activate-environment: build
          environment-file: devtools/ci/gh-actions/conda-envs/build-windows-latest.yml
          auto-activate-base: false

      - name: "Install CUDA (if needed)"
        shell: cmd /C call {0}
        if: matrix.cuda-version != ''
        env:
          CUDA_VERSION: ${{ matrix.cuda-version }}
        run: call devtools/ci/gh-actions/scripts/install_cuda.bat

      - name: "Prepare ccache"
        id: prepare-ccache
        shell: cmd /C call {0}
        run: |
          set name=${{ matrix.name }}
          set name=%name: =%
          set name=%name:.=%
          for /f "usebackq tokens=*" %%a in (`%CONDA_PREFIX%\Library\usr\bin\date.exe +%%Y%%m%%d-%%H%%M%%S`) do set "timestamp=%%a"

          echo ::set-output name=key::%name%
          echo ::set-output name=timestamp::%timestamp%

          ccache -p
          ccache -z

      - name: "Restore ccache"
        uses: actions/cache@v1.1.0
        with:
          path: .ccache
          key: ccache-${{ secrets.CACHE_VERSION }}-${{ steps.prepare-ccache.outputs.key }}-${{ steps.prepare-ccache.outputs.timestamp }}
          restore-keys: |
            ccache-${{ secrets.CACHE_VERSION }}-${{ steps.prepare-ccache.outputs.key }}-

      - name: "Configure build with CMake"
        shell: cmd /C call {0}
        env:
          CMAKE_FLAGS: ${{ matrix.CMAKE_FLAGS }}
        run: |
          call "C:\Program Files\Microsoft Visual Studio\2022\Enterprise\VC\Auxiliary\Build\vcvarsall.bat" x64
          mkdir build
          cd build
          cmake -G "NMake Makefiles JOM" ^
                -DCMAKE_BUILD_TYPE=Release ^
                -DCMAKE_INSTALL_PREFIX=%CONDA_PREFIX%/Library ^
                -DCMAKE_PREFIX_PATH=%CONDA_PREFIX%/Library ^
                -DOPENCL_INCLUDE_DIR=%CONDA_PREFIX%/Library/include ^
                -DOPENCL_LIBRARY=%CONDA_PREFIX%/Library/lib/OpenCL.lib ^
                -DCMAKE_C_COMPILER_LAUNCHER=ccache ^
                -DCMAKE_CXX_COMPILER_LAUNCHER=ccache ^
                -DCMAKE_CXX_COMPILER=cl.exe ^
                -DCMAKE_C_COMPILER=cl.exe ^
                -DOPENMM_BUILD_EXAMPLES=OFF ^
                -DOPENMM_BUILD_OPENCL_TESTS=OFF ^
                %CMAKE_FLAGS%
                ..

      - name: "Build OpenMM"
        shell: cmd /C call {0}
        run: |
          call "C:\Program Files\Microsoft Visual Studio\2022\Enterprise\VC\Auxiliary\Build\vcvarsall.bat" x64
          cd build
          jom -j 2
          if errorlevel 1 exit 1
          jom -j 2 install
          if errorlevel 1 exit 1

      - name: "Build Python wrappers"
        shell: cmd /C call {0}
        if: ${{ !contains(matrix.CMAKE_FLAGS, 'OPENMM_BUILD_PYTHON_WRAPPERS=OFF') }}
        run: |
          call "C:\Program Files\Microsoft Visual Studio\2022\Enterprise\VC\Auxiliary\Build\vcvarsall.bat" x64
          cd build
          jom -j 2 PythonInstall

      - name: "Check ccache performance"
        shell: cmd /C call {0}
        run: ccache -s

      - name: "Test OpenMM"
        shell: cmd /C call {0}
        id: testcore
        run: |
          @echo on
          cd build
          python ..\devtools\run-ctest.py --parallel 2 --timeout 600 --job-duration 900 --attempts 3
          if errorlevel 1 exit 1

          if not exist %CONDA_PREFIX%/Library/lib/OpenMM.lib exit 1
          if not "${{ matrix.cuda-version }}" == "" (
            if not exist %CONDA_PREFIX%/Library/lib/plugins/OpenMMCUDA.lib exit 1
            if not exist %CONDA_PREFIX%/Library/lib/plugins/OpenMMOpenCL.lib exit 1
            if not exist %CONDA_PREFIX%/Library/lib/plugins/OpenMMCudaCompiler.lib exit 1
          ) else (
            if not exist %CONDA_PREFIX%/Library/lib/plugins/OpenMMCPU.lib exit 1
            if not exist %CONDA_PREFIX%/Library/lib/plugins/OpenMMPME.lib exit 1
          )

      - name: "Test Python wrappers"
        shell: cmd /C call {0}
        if: ${{ !contains(matrix.CMAKE_FLAGS, 'OPENMM_BUILD_PYTHON_WRAPPERS=OFF') && (steps.testcore.outcome == 'failure' || steps.testcore.outcome == 'success') }}
        run: |
          @echo on
          python -m openmm.testInstallation
          python -c "import openmm as mm; print('---Loaded---', *mm.pluginLoadedLibNames, '---Failed---', *mm.Platform.getPluginLoadFailures(), sep='\n')"
          cd build\python\tests
          python -m pytest -v -n 2

  docker:
    name: ${{ matrix.name }}
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        include:
          - name: PowerPC CPU/CUDA 10.2 Python 3.11 with condaforge compilers
            docker-image: quay.io/condaforge/linux-anvil-ppc64le-cuda:10.2
            python-version: "3.11"
            compilers: compilers

          - name: PowerPC CPU Python 3.11 devtoolset-7 compilers
            docker-image: quay.io/condaforge/linux-anvil-ppc64le
            python-version: "3.11"
            compilers: devtoolset-7

          - name: ARM CPU Python 3.11 with condaforge compilers
            docker-image: quay.io/condaforge/linux-anvil-aarch64
            python-version: "3.11"
            compilers: compilers


    steps:
    - uses: actions/checkout@v2

    # Following bits adapted from conda-forge Azure configs.
    # If it stops working, check any feedstock with ppc64le or aarch64
    # enabled, and adapt from:
    #  .azure-pipelines/azure-pipelines-linux.yml
    #  .scripts/run_docker_build.sh
    #  .scripts/build_steps.sh

    - name: "Prepare docker"
      run: |
        docker run --rm --privileged multiarch/qemu-user-static:register --reset --credential yes
        ls /proc/sys/fs/binfmt_misc/

        docker info

        # In order for the conda-build process in the container to write to the mounted
        # volumes, we need to run with the same id as the host machine, which is
        # normally the owner of the mounted volumes, or at least has write permission
        export HOST_USER_ID=$(id -u)

        # Check if docker-machine is being used (normally on OSX) and get the uid from
        # the VM
        if hash docker-machine 2> /dev/null && docker-machine active > /dev/null; then
            export HOST_USER_ID=$(docker-machine ssh $(docker-machine active) id -u)
        fi

        echo "HOST_USER_ID=${HOST_USER_ID}" >> ${GITHUB_ENV}

    - name: "Prepare ccache"
      id: prepare-ccache
      shell: bash -l {0}
      run: |
        echo "::set-output name=key::$(echo "${{ matrix.name }}" | tr -d ' .')"
        echo "::set-output name=timestamp::$(date +%Y%m%d-%H%M%S)"

    - name: "Restore ccache"
      uses: actions/cache@v1.1.0
      with:
        path: .ccache
        key: ccache-${{ secrets.CACHE_VERSION }}-${{ steps.prepare-ccache.outputs.key }}-${{ steps.prepare-ccache.outputs.timestamp }}
        restore-keys: |
          ccache-${{ secrets.CACHE_VERSION }}-${{ steps.prepare-ccache.outputs.key }}-

    - name: Run docker
      env:
        PYTHON_VER: ${{ matrix.python-version }}
        DOCKER_IMAGE: ${{ matrix.docker-image }}
        COMPILERS: ${{ matrix.compilers }}
      run: |
        echo "::group::Start docker..."
        docker run \
          -v "${GITHUB_WORKSPACE}":/home/conda/workspace:rw,z \
          -e HOST_USER_ID \
          -e CPU_COUNT \
          -e PYTHON_VER \
          -e COMPILERS \
          ${DOCKER_IMAGE} \
          bash \
          /home/conda/workspace/devtools/ci/gh-actions/scripts/run_steps_inside_docker_image.sh

        test -f docker_steps_run_successfully


  docs:
    name: Docs
    env:
      CCACHE_BASEDIR: "${{ github.workspace }}"
      CCACHE_DIR: "${{ github.workspace }}/.ccache"
      CCACHE_COMPRESS: true
      CCACHE_COMPRESSLEVEL: 6
      CCACHE_MAXSIZE: 400M

    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2

      - uses: conda-incubator/setup-miniconda@v2
        name: "Prepare base dependencies"
        with:
          python-version: "3.7"
          activate-environment: build
          environment-file: devtools/ci/gh-actions/conda-envs/docs.yml
          auto-activate-base: false

      - name: "Install TeX"
        run: |
          set -x
          echo 'APT::Acquire::Retries "5";' | sudo tee /etc/apt/apt.conf.d/80-retries
          sudo apt-get install -y \
            latexmk \
            texlive-latex-recommended \
            texlive-fonts-recommended \
            texlive-latex-extra \
            texlive-xetex \
            fonts-freefont-otf

      - name: "Prepare ccache"
        id: prepare-ccache
        shell: bash -l {0}
        run: |
          echo "::set-output name=key::$(echo "${{ matrix.name }}" | tr -d ' .')"
          echo "::set-output name=timestamp::$(date +%Y%m%d-%H%M%S)"

          ccache -p
          ccache -z

      - name: "Restore ccache"
        uses: actions/cache@v1.1.0
        with:
          path: .ccache
          key: ccache-${{ secrets.CACHE_VERSION }}-${{ steps.prepare-ccache.outputs.key }}-${{ steps.prepare-ccache.outputs.timestamp }}
          restore-keys: |
            ccache-${{ secrets.CACHE_VERSION }}-${{ steps.prepare-ccache.outputs.key }}-

      - name: "Configure build with CMake"
        shell: bash -l {0}
        run: |
          mkdir build
          cd build
          cmake .. \
            -DCMAKE_INSTALL_PREFIX=${CONDA_PREFIX} \
            -DCMAKE_PREFIX_PATH=${CONDA_PREFIX} \
            -DCMAKE_C_COMPILER_LAUNCHER=ccache \
            -DCMAKE_CXX_COMPILER_LAUNCHER=ccache \
            -DOPENMM_GENERATE_API_DOCS=ON \
            -DOPENMM_BUILD_PYTHON_WRAPPERS=ON \
            -DOPENMM_BUILD_OPENCL_LIB=OFF \
            -DOPENMM_BUILD_REFERENCE_TESTS=OFF \
            -DOPENMM_BUILD_CPU_TESTS=OFF \
            -DOPENMM_BUILD_CUDA_TESTS=OFF \
            -DOPENMM_BUILD_OPENCL_TESTS=OFF \
            -DOPENMM_BUILD_SERIALIZATION_TESTS=OFF \
            -DOPENMM_BUILD_C_AND_FORTRAN_WRAPPERS=OFF \
            -DOPENMM_BUILD_EXAMPLES=OFF

      - name: Build docs
        shell: bash -l {0}
        run: |
          set -x
          cd build
          make -j2 install PythonInstall
          make -j2 sphinxhtml
          make -j2 sphinxpdf
          make -j2 C++ApiDocs
          make -j2 PythonApiDocs
          mkdir -p api-docs
          mv sphinx-docs/userguide/html api-docs/userguide
          mv sphinx-docs/userguide/latex/*.pdf api-docs/userguide/
          mv sphinx-docs/developerguide/html api-docs/developerguide
          mv sphinx-docs/developerguide/latex/*.pdf api-docs/developerguide/
          mv api-python api-docs
          mv api-c++ api-docs

      - name: "Check ccache performance"
        shell: bash -l {0}
        run: ccache -s

      - name: "Deploy docs (only on master)"
        if: ${{ github.ref == 'refs/heads/master' && github.event_name != 'schedule' }}
        uses: jakejarvis/s3-sync-action@master
        with:
          args: --acl public-read --follow-symlinks --delete
        env:
          AWS_S3_BUCKET: ${{ secrets.AWS_S3_BUCKET }}
          AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
          AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
          AWS_REGION: 'us-west-1'
          SOURCE_DIR: 'build/api-docs'
          DEST_DIR: 'development'

      - name: Check 404s
        shell: bash -l {0}
        env:
          # Pipe-seperated list of domains to skip
          SKIP_DOMAIN: support.amd.com|www.pnas.org|doi.org
        run: |
          set +e
          # Linkinator accepts regex for its --skip argument, so we
          # should pre-process the domains into the relevant pattern
          SKIP_REGEX=$(python -c "print(
            '^(https?://)?([a-zA-Z0-9\-_.]+\.)?', # Optionally match protocol and subdomains
            '(',                                  # Open sub-pattern for domain names
              '$SKIP_DOMAIN'.replace('.', '\.'),     # Escape out periods
            ')',                                  # Close sub-pattern of domains
            '(/.*)?$',                            # only match if this is the end of the domain name
            sep='',                               # Concatenate the above strings exactly
            end=''                                # No newline at end of print()
          )")
          for d in api-c++ api-python developerguide userguide; do
            echo "::group:: Check ${d}"
            npx linkinator@3.0.0 ./${d}/ --recurse --timeout=20000 --skip "$SKIP_REGEX" --server-root ./build/api-docs --verbosity error
            ((exitcode+=$?))
            echo "::endgroup::"
          done
          echo "::group:: Check README"
          npx linkinator@3.0.0 ./README.md --markdown --skip "$SKIP_REGEX"
          ((exitcode+=$?))
          echo "::endgroup::"
          exit $exitcode