name: CI

env:
  LLVM_VERSION_WINDOWS: 9.0.0

on: [push, pull_request]

jobs:
  build:
    name: ${{ matrix.name }}
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        # Github Actions requires a single row to be added to the build matrix.
        # See https://help.github.com/en/articles/workflow-syntax-for-github-actions.
        name: [
          windows-clang-cl,
        ]
        include:
          - name: windows-clang-cl
            os: windows-latest
            compiler: clang-cl
    steps:
    - name: Checkout repository
      uses: actions/checkout@v1
      with:
        fetch-depth: 1
    - name: Setup Bazel
      shell: bash
      env:
        BAZEL_CACHE_CREDENTIAL_B64: ${{ secrets.BAZEL_CACHE_CREDENTIAL_B64 }}
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      run: ./ci/travis/install-bazel.sh
    - name: Install C/C++ toolchains
      if: matrix.compiler == 'clang' || matrix.compiler == 'clang-cl'
      shell: bash
      run: |
        set -euo pipefail
        if [ "${OSTYPE}" = "msys" ]; then
          export MSYS2_ARG_CONV_EXCL="*"  # Don't let MSYS2 attempt to auto-translate arguments that look like paths
          # Ideally we should be able to use the Chocolatey package manager:
          #   choco install --no-progress llvm
          # However, it frequently gives HTTP 503 errors, so we just download and install manually.
          urldir="https://releases.llvm.org"
          arch=64
          if [ "${HOSTTYPE}" = "${HOSTTYPE%64}" ]; then arch=32; fi
          target="./LLVM-${LLVM_VERSION_WINDOWS}-win${arch}.exe"
          curl -s -L -R -o "${target}" "http://releases.llvm.org/${LLVM_VERSION_WINDOWS}/${target##*/}"
          chmod +x "${target}"
          "${target}" /S
          rm -f -- "${target}"
        elif 1>&- command -v pacman; then
          sudo pacman -S --needed --noconfirm --noprogressbar clang
        elif 1>&- command -v apt-get; then
          sudo apt-get -q -y install clang
        fi
    - name: Install MSYS2 (only needed if some shell commands are missing)
      if: false && runner.os == 'Windows'
      uses: numworks/setup-msys2@v1
      with:
        update: false
    - name: Perform build
      shell: bash
      run: |
        set -euo pipefail
        main() {
          if [ "${OSTYPE}" = "msys" ]; then
            export MSYS2_ARG_CONV_EXCL="*"  # Don't let MSYS2 attempt to auto-translate arguments that look like paths
            local latest_python_bin=""
            for latest_python_bin in /proc/registry/HKEY_LOCAL_MACHINE/Software/Python/PythonCore/*/InstallPath/@; do
              if [ -f "${latest_python_bin}" ]; then
                latest_python_bin="$(tr -d '\0' < "${latest_python_bin}")"
                latest_python_bin="${latest_python_bin}\\"
              else
                latest_python_bin=""
              fi
            done
            latest_python_bin="${latest_python_bin}python.exe"
            if [ -f "${latest_python_bin}" ]; then
              export PYTHON2_BIN_PATH="${latest_python_bin}" PYTHON3_BIN_PATH="${latest_python_bin}"
            fi
          fi
          # NOTE: Only options that are _user preferences_ (i.e. not repository-specific) should go here.
          # These are options that people may disagree on having on their own machines, but which are useful for our builds.
          bazel_output_root="${HOME}/bazel"
          if [ "${OSTYPE}" = "msys" ]; then
            bazel_output_root="$(cygpath -w -- "${bazel_output_root}")"
          fi
          local startflags=()
          startflags+=(--batch)
          startflags+=(--nodeep_execroot)
          #startflags+=(--output_user_root="${bazel_output_root}")
          local cmdflags=()
          cmdflags+=(--attempt_to_print_relative_paths)
          cmdflags+=(--color=yes)
          cmdflags+=(--experimental_repository_cache_hardlinks)
          cmdflags+=(--experimental_ui_deduplicate)
          cmdflags+=(--incompatible_strict_action_env)
          cmdflags+=(--keep_going)
          cmdflags+=(--per_file_copt="-\\.(asm|S)$@-fansi-escape-codes")
          cmdflags+=(--per_file_copt="-\\.(asm|S)$@-fcolor-diagnostics")
          cmdflags+=(--show_progress_rate_limit=5)
          cmdflags+=(--show_task_finish)
          cmdflags+=(--show_timestamps)
          cmdflags+=(--symlink_prefix=/)
          cmdflags+=(--verbose_failures)
          local packages=()
          packages+=("//:ray_pkg")
          bazel "${startflags[@]}" build "${cmdflags[@]}" "${packages[@]}" "$@"
        }
        main "$@"