ci.yml

name: CI
on: [push, pull_request]

jobs:
  build:
    strategy:
      fail-fast: false
      max-parallel: 20
      matrix:
        test_lang: [c, cpp]
        target:
          - os: linux
            cpu: amd64
          - os: linux
            cpu: i386
          - os: macos
            cpu: amd64
          - os: windows
            cpu: amd64
          - os: windows
            cpu: i386
        include:
          - target:
              os: linux
            builder: ubuntu-20.04
          - target:
              os: macos
            builder: macos-11
          - target:
              os: windows
            builder: windows-latest

    name: '${{ matrix.target.os }}-${{ matrix.target.cpu }}-${{ matrix.test_lang }}'
    runs-on: ${{ matrix.builder }}
    steps:
      - name: Checkout nimPNG
        uses: actions/checkout@v3
        with:
          path: nimPNG
          submodules: false

      - name: Install build dependencies (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 \
            libssl-dev:i386
          mkdir -p external/bin
          cat << EOF > external/bin/gcc
          #!/bin/bash
          exec $(which gcc) -m32 "\$@"
          EOF
          cat << EOF > external/bin/g++
          #!/bin/bash
          exec $(which g++) -m32 "\$@"
          EOF
          chmod 755 external/bin/gcc external/bin/g++
          echo '${{ github.workspace }}/external/bin' >> $GITHUB_PATH

      - name: Restore MinGW-W64 (Windows) from cache
        if: runner.os == 'Windows'
        id: windows-mingw-cache
        uses: actions/cache@v3
        with:
          path: external/mingw-${{ matrix.target.cpu }}
          key: 'mingw-${{ matrix.target.cpu }}'

      - name: Restore Nim DLLs dependencies (Windows) from cache
        if: runner.os == 'Windows'
        id: windows-dlls-cache
        uses: actions/cache@v3
        with:
          path: external/dlls-${{ matrix.target.cpu }}
          key: 'dlls-${{ matrix.target.cpu }}'

      - name: Install MinGW64 dependency (Windows)
        if: >
          steps.windows-mingw-cache.outputs.cache-hit != 'true' &&
          runner.os == 'Windows'
        shell: bash
        run: |
          mkdir -p external
          MINGW_BASE="https://github.com/brechtsanders/winlibs_mingw/releases/download/11.2.0-12.0.1-9.0.0-r1"
          if [[ '${{ matrix.target.cpu }}' == 'amd64' ]]; then
            MINGW_URL="$MINGW_BASE/winlibs-x86_64-posix-seh-gcc-11.2.0-mingw-w64-9.0.0-r1.7z"
            ARCH=64
          else
            MINGW_URL="$MINGW_BASE/winlibs-i686-posix-dwarf-gcc-11.2.0-mingw-w64-9.0.0-r1.7z"
            ARCH=32
          fi
          curl -L "$MINGW_URL" -o "external/mingw-${{ matrix.target.cpu }}.7z"
          7z x -y "external/mingw-${{ matrix.target.cpu }}.7z" -oexternal/
          mv external/mingw$ARCH external/mingw-${{ matrix.target.cpu }}

      - name: Install DLLs dependencies (Windows)
        if: >
          steps.windows-dlls-cache.outputs.cache-hit != 'true' &&
          runner.os == 'Windows'
        shell: bash
        run: |
          mkdir -p external
          curl -L "https://nim-lang.org/download/windeps.zip" -o external/windeps.zip
          7z x -y external/windeps.zip -oexternal/dlls-${{ matrix.target.cpu }}

      - name: Path to cached dependencies (Windows)
        if: >
          runner.os == 'Windows'
        shell: bash
        run: |
          echo '${{ github.workspace }}'"/external/mingw-${{ matrix.target.cpu }}/bin" >> $GITHUB_PATH
          echo '${{ github.workspace }}'"/external/dlls-${{ matrix.target.cpu }}" >> $GITHUB_PATH

      - name: Setup environment
        shell: bash
        run: echo '${{ github.workspace }}/nim/bin' >> $GITHUB_PATH

      - name: Get latest Nim commit hash
        id: versions
        shell: bash
        run: |
          getHash() {
            git ls-remote "https://github.com/$1" "${2:-HEAD}" | cut -f 1
          }
          nimHash=$(getHash nim-lang/Nim devel)
          csourcesHash=$(getHash nim-lang/csources_v2)
          echo "nimHash=$nimHash" >> $GITHUB_OUTPUT
          echo "csourcesHash=$csourcesHash" >> $GITHUB_OUTPUT

      - name: Restore prebuilt Nim from cache
        id: nim-cache
        uses: actions/cache@v3
        with:
          path: nim
          key: 'nim-${{ matrix.target.os }}-${{ matrix.target.cpu }}-${{ steps.versions.outputs.nimHash }}'

      - name: Restore prebuilt csources from cache
        if: steps.nim-cache.outputs.cache-hit != 'true'
        id: csources-cache
        uses: actions/cache@v3
        with:
          path: csources/bin
          key: 'csources-${{ matrix.target.os }}-${{ matrix.target.cpu }}-${{ steps.versions.outputs.csourcesHash }}'

      - name: Checkout Nim csources
        if: >
          steps.csources-cache.outputs.cache-hit != 'true' &&
          steps.nim-cache.outputs.cache-hit != 'true'
        uses: actions/checkout@v3
        with:
          repository: nim-lang/csources_v2
          path: csources
          ref: ${{ steps.versions.outputs.csources }}

      - name: Checkout Nim
        if: steps.nim-cache.outputs.cache-hit != 'true'
        uses: actions/checkout@v3
        with:
          repository: nim-lang/Nim
          path: nim
          ref: ${{ steps.versions.outputs.nim }}

      - name: Build Nim and associated tools
        if: steps.nim-cache.outputs.cache-hit != 'true'
        shell: bash
        run: |
          ncpu=
          ext=
          case '${{ runner.os }}' in
          'Linux')
            ncpu=$(nproc)
            ;;
          'macOS')
            ncpu=$(sysctl -n hw.ncpu)
            ;;
          'Windows')
            ncpu=$NUMBER_OF_PROCESSORS
            ext=.exe
            ;;
          esac
          [[ -z "$ncpu" || $ncpu -le 0 ]] && ncpu=1
          if [[ ! -e csources/bin/nim$ext ]]; then
            make -C csources -j $ncpu CC=gcc ucpu='${{ matrix.target.cpu }}'
          else
            echo 'Using prebuilt csources'
          fi
          cp -v csources/bin/nim$ext nim/bin
          cd nim
          nim c koch
          ./koch boot -d:release
          ./koch nimble -d:release
          # clean up to save cache space
          rm koch
          rm -rf nimcache
          rm -rf dist
          rm -rf .git

      - name: Run nimPNG tests
        shell: bash
        working-directory: nimPNG
        run: |
          nimble install -y --depsOnly
          env TEST_LANG="${{ matrix.test_lang }}" nimble test

      #- name: Setup VCC (Windows-i386)
      #  if: runner.os == 'Windows' && matrix.target.cpu == 'i386'
      #  uses: ilammy/msvc-dev-cmd@v1.5.0
      #  with:
      #    arch: amd64_x86
      #
      #- name: Setup VCC (Windows-amd64)
      #  if: runner.os == 'Windows' && matrix.target.cpu == 'amd64'
      #  uses: ilammy/msvc-dev-cmd@v1.5.0
      #  with:
      #    arch: x64
      #
      #- name: Test using VCC
      #  if: runner.os == 'Windows'
      #  shell: cmd
      #  working-directory: nimPNG
      #  run: |
      #    env TEST_LANG="${{ matrix.test_lang }}" nimble testvcc