name: CI
on:
  push:
    branches:
      - main
  pull_request:
  workflow_dispatch:

jobs:
  build:
    strategy:
      fail-fast: false
      matrix:
        cache_nonce: [ 0 ] # Allows for easily busting actions/cache caches
        target:
          - os: linux
            cpu: amd64
          # - os: linux
          #   cpu: i386
          - os: macos
            cpu: amd64
          - os: windows
            cpu: amd64
          # - os: windows
          #   cpu: i386
        nim_branch: [version-1-2, version-1-6]
        cov_branch: [version-1-6]
        include:
          - target:
              os: linux
            builder: ubuntu-latest
            shell: bash --noprofile --norc -eo pipefail
          - target:
              os: macos
            builder: macos-latest
            shell: bash --noprofile --norc -eo pipefail
          - target:
              os: windows
            builder: windows-latest
            shell: msys2

    defaults:
      run:
        shell: ${{ matrix.shell }} {0}

    name: '${{ matrix.target.os }}-${{ matrix.target.cpu }} (Nim ${{ matrix.nim_branch }})'
    runs-on: ${{ matrix.builder }}
    timeout-minutes: 80
    steps:
      - name: Checkout sources
        uses: actions/checkout@v3

      - name: APT (Linux amd64)
        if: runner.os == 'Linux' && matrix.target.cpu == 'amd64'
        run: |
          sudo apt-fast update -qq
          sudo DEBIAN_FRONTEND='noninteractive' apt-fast install \
            --no-install-recommends -yq lcov

      - name: APT (Linux i386)
        if: runner.os == 'Linux' && matrix.target.cpu == 'i386'
        run: |
          sudo dpkg --add-architecture i386
          sudo apt-fast update -qq
          sudo DEBIAN_FRONTEND='noninteractive' apt-fast install \
            --no-install-recommends -yq gcc-multilib g++-multilib

      - name: Homebrew (macOS)
        if: runner.os == 'macOS'
        run: |
          brew install libomp

      - name: MSYS2 (Windows amd64)
        if: runner.os == 'Windows' && matrix.target.cpu == 'amd64'
        uses: msys2/setup-msys2@v2
        with:
          msystem: UCRT64
          install: >
            base-devel
            git
            mingw-w64-ucrt-x86_64-toolchain
            mingw-w64-ucrt-x86_64-cmake
            mingw-w64-ucrt-x86_64-ntldd-git

      - name: MSYS2 (Windows i386)
        if: runner.os == 'Windows' && matrix.target.cpu == 'i386'
        uses: msys2/setup-msys2@v2
        with:
          msystem: MINGW32
          install: >
            base-devel
            git
            mingw-w64-i686-toolchain
            mingw-w64-i686-cmake
            mingw-w64-i686-ntldd-git

      - name: Derive environment variables
        run: |
          quote () {
            local quoted=${1//\'/\'\\\'\'};
            printf "'%s'" "$quoted"
          }

          if [[ '${{ matrix.target.cpu }}' == 'amd64' ]]; then
            PLATFORM=x64
          else
            PLATFORM=x86
          fi
          echo "PLATFORM=${PLATFORM}" >> ${GITHUB_ENV}

          # Stack usage on Linux amd64
          if [[ '${{ runner.os }}' == 'Linux' && '${{ matrix.target.cpu }}' == 'amd64' ]]; then
            NIMFLAGS="${NIMFLAGS} -d:limitStackUsage"
            echo "NIMFLAGS=${NIMFLAGS}" >> $GITHUB_ENV
          fi

          # Disable ADX on Linux i386
          if [[ '${{ runner.os }}' == 'Linux' && '${{ matrix.target.cpu }}' == 'i386' ]]; then
            CFLAGS="${CFLAGS} -m32 -mno-adx"
            echo "CFLAGS=${CFLAGS}" >> ${GITHUB_ENV}
            CXXFLAGS="${CXXFLAGS} -m32 -mno-adx"
            echo "CXXFLAGS=${CXXFLAGS}" >> ${GITHUB_ENV}
            mkdir -p external/bin
            cat << EOF > external/bin/gcc
          #!/bin/bash
          exec $(which gcc) -m32 -mno-adx "\$@"
          EOF
            cat << EOF > external/bin/g++
          #!/bin/bash
          exec $(which g++) -m32 -mno-adx "\$@"
          EOF
            chmod 755 external/bin/gcc external/bin/g++
            echo "$(pwd)/external/bin" >> ${GITHUB_PATH}
            NIMFLAGS="${NIMFLAGS} $(quote "--passC:'-m32 -mno-adx' -d:LeopardCmakeFlags='-DCMAKE_BUILD_TYPE=Release -DCMAKE_C_COMPILER=$(pwd)/external/bin/gcc -DCMAKE_CXX_COMPILER=$(pwd)/external/bin/g++'")"
            echo "NIMFLAGS=${NIMFLAGS}" >> $GITHUB_ENV
          fi

          # Disable ADX on Windows i386
          if [[ '${{ runner.os }}' == 'Windows' && '${{ matrix.target.cpu }}' == 'i386' ]]; then
            CFLAGS="${CFLAGS} -mno-adx"
            echo "CFLAGS=${CFLAGS}" >> ${GITHUB_ENV}
            CXXFLAGS="${CXXFLAGS} -mno-adx"
            echo "CXXFLAGS=${CXXFLAGS}" >> ${GITHUB_ENV}
            NIMFLAGS="${NIMFLAGS} --passC:-mno-adx"
            echo "NIMFLAGS=${NIMFLAGS}" >> $GITHUB_ENV
          fi

          # Enable OpenMP on macOS
          if [[ '${{ runner.os }}' == 'macOS' ]]; then
            libomp_lib_dir="$(brew --prefix)/opt/libomp/lib"
            llvm_dir="$(ls -d $(brew --prefix)/opt/llvm* | tail -1)"
            llvm_bin_dir="${llvm_dir}/bin"
            llvm_lib_dir="${llvm_dir}/lib"
            echo "${llvm_bin_dir}" >> ${GITHUB_PATH}
            echo "LDFLAGS=${LDFLAGS} -L${libomp_lib_dir} -L${llvm_lib_dir} -Wl,-rpath,${llvm_lib_dir}" >> ${GITHUB_ENV}
            NIMFLAGS="${NIMFLAGS} $(quote "-d:LeopardCmakeFlags='-DCMAKE_BUILD_TYPE=Release -DCMAKE_C_COMPILER=${llvm_bin_dir}/clang -DCMAKE_CXX_COMPILER=${llvm_bin_dir}/clang++' -d:LeopardExtraCompilerlags='-fopenmp' -d:LeopardExtraLinkerFlags='-fopenmp -L${libomp_lib_dir}'")"
            echo "NIMFLAGS=${NIMFLAGS}" >> $GITHUB_ENV
          fi

          # Use all available CPUs for build process
          ncpu=""
          case '${{ runner.os }}' in
          'Linux')
            ncpu=$(nproc)
            ;;
          'macOS')
            ncpu=$(sysctl -n hw.ncpu)
            ;;
          'Windows')
            ncpu=${NUMBER_OF_PROCESSORS}
            ;;
          esac
          [[ -z "$ncpu" || $ncpu -le 0 ]] && ncpu=1
          echo "ncpu=${ncpu}" >> ${GITHUB_ENV}

      - name: Restore Nim toolchain binaries from cache
        id: nim-cache
        uses: actions/cache@v3
        with:
          path: NimBinaries
          key: ${{ matrix.target.os }}-${{ matrix.target.cpu }}-nim-${{ matrix.nim_branch }}-cache_nonce:${{ matrix.cache_nonce }}

      - name: Build Nim and Codex dependencies
        run: |
          make -j${ncpu} CI_CACHE=NimBinaries NIM_COMMIT=${{ matrix.nim_branch }} ARCH_OVERRIDE=${PLATFORM} QUICK_AND_DIRTY_COMPILER=1 update
          echo
          ./env.sh nim --version

      # Rely on NodeJS LTS installed in GitHub Actions virtual environments
      - name: Start Ethereum node with Codex contracts
        working-directory: vendor/dagger-contracts
        run: |
          if [[ '${{ runner.os }}' == 'Windows' ]]; then
            export PATH="/c/Program Files/nodejs:${PATH}"
            export PATH="$(cygpath -u "$(npm --location=global prefix 2>/dev/null)"):${PATH}"
          fi
          echo node --version
          node --version
          echo npm --version
          npm --version 2>/dev/null
          echo
          npm install
          npm start &

      - name: Build and run Codex tests
        run: |
          make -j${ncpu} NIM_COMMIT="${{ matrix.nim_branch }}" testAll
          echo
          if [[ '${{ runner.os }}' == macOS ]]; then
            echo otool -L build/codex
            otool -L build/codex
          elif [[ '${{ runner.os }}' == 'Windows' ]]; then
            echo ntldd build/codex
            ntldd build/codex
          else
            echo ldd build/codex
            ldd build/codex
          fi

      - name: Generate coverage data (Linux amd64, Nim ${{ matrix.cov_branch }})
        if: runner.os == 'Linux' && matrix.target.cpu == 'amd64' && matrix.nim_branch == matrix.cov_branch
        run: |
          rm -rf build nimcache
          make -j${ncpu} NIM_COMMIT="${{ matrix.nim_branch }}" coverage

      - name: Upload coverage data to Codecov (Linux amd64, Nim ${{ matrix.cov_branch }})
        if: runner.os == 'Linux' && matrix.target.cpu == 'amd64' && matrix.nim_branch == matrix.cov_branch
        uses: codecov/codecov-action@v3
        with:
          directory: ./coverage/
          fail_ci_if_error: true
          files: ./coverage/coverage.f.info
          flags: unittests
          name: codecov-umbrella
          verbose: true