build.yml

name: Build
on:
  pull_request:
  push:
    branches:
      - main
    tags:
      - "v*.*.*"

jobs:
  build:
    runs-on: ${{ matrix.os }}
    continue-on-error: true
    strategy:
      matrix:
        include:
          - os: ubuntu-latest
            artifact: "linux-x64"
            ocaml-compiler: "ocaml-variants.5.2.0+options,ocaml-option-flambda"
            triplet: "x64-linux"
          - os: windows-latest
            artifact: "windows-x64"
            ocaml-compiler: "ocaml-variants.5.2.0+options,ocaml-option-flambda"
            triplet: "x64-mingw-static"
          - os: macos-latest
            artifact: "macos-arm64"
            ocaml-compiler: "ocaml-variants.5.2.0+options,ocaml-option-flambda"
            triplet: "arm64-osx"
          - os: macos-13
            artifact: "macos-x64"
            ocaml-compiler: "ocaml-variants.5.2.0+options,ocaml-option-flambda"
            triplet: "x64-osx"
    defaults:
      run:
        shell: bash
    steps:
      - uses: actions/checkout@v2.3.2

      - if: runner.os == 'Windows'
        run: |
          rm -rf $(which pkg-config)
          choco install pkgconfiglite

      - run: gcc --version

      - uses: lukka/get-cmake@latest
      - name: Setup anew (or from cache) vcpkg (and does not build any package)
        uses: lukka/run-vcpkg@v11
        env:
          VCPKG_DEFAULT_TRIPLET: ${{ matrix.triplet }}
          VCPKG_DEFAULT_HOST_TRIPLET: ${{ matrix.triplet }}
          VCPKG_BUILD_TYPE: release
        with:
          runVcpkgInstall: true
          runVcpkgFormatString: '["install", "--clean-after-build"]'

      - name: Set pkg-config path on Unix
        if: runner.os != 'Windows'
        run: |
          ls "${GITHUB_WORKSPACE}/vcpkg_installed/${VCPKG_DEFAULT_TRIPLET}/lib/pkgconfig"
          echo "PKG_CONFIG_PATH=${GITHUB_WORKSPACE}/vcpkg_installed/${VCPKG_DEFAULT_TRIPLET}/lib/pkgconfig" >> $GITHUB_ENV

      - name: Set pkg-config path on Unix
        shell: bash
        if: runner.os  == 'Windows'
        run: |
          echo "PKG_CONFIG_PATH=${GITHUB_WORKSPACE}\vcpkg_installed\\${VCPKG_DEFAULT_TRIPLET}\lib\pkgconfig" >> $GITHUB_ENV

      - shell: bash
        run: |
          echo "LIBPNG_CFLAGS=$(pkg-config --cflags libspng_static)" >> $GITHUB_ENV
          echo "LIBPNG_LIBS=$(pkg-config --libs libspng_static)" >> $GITHUB_ENV
          echo "LIBTIFF_LIBS=$(pkg-config --libs libtiff-4)" >> $GITHUB_ENV
          echo "LIBTIFF_CFLAGS=$(pkg-config --cflags libtiff-4)" >> $GITHUB_ENV
          echo "LIBJPEG_CFLAGS=$(pkg-config --cflags libturbojpeg)" >> $GITHUB_ENV
          echo "LIBJPEG_LIBS=$(pkg-config --libs libturbojpeg)" >> $GITHUB_ENV

      - uses: ocaml/setup-ocaml@v3
        with:
          ocaml-compiler: ${{ matrix.ocaml-compiler }}
          opam-disable-sandboxing: true
          dune-cache: false

      - run: opam exec -- opam install . --deps-only --with-test
      - run: opam exec -- dune build --verbose

      - run: opam exec -- dune exec ODiffBin -- --version 
      - run: opam exec -- dune runtest

      - if: failure()
        uses: actions/upload-artifact@v4
        with:
          name: test_images
          path: _build/default/test/test_images

      - name: Set up Node.js
        uses: actions/setup-node@v4
        with:
          node-version: '20'
          cache: 'npm'
          cache-dependency-path: 'package-lock.json'

      - name: Install node deps
        run: npm ci
      - name: e2e test
        run: npm test
        
      - name: Build release binary
        # this is needed because now ocaml's internal cygwin will be used on windows
        # which breaks normal line endings
        env:
          SHELLOPTS: igncr
        run: |
          opam exec -- dune clean && \
          opam exec -- dune build --release && \
          cp "_build/default/bin/ODiffBin.exe" "odiff-${{ matrix.artifact }}.exe"

      - if: always()
        uses: actions/upload-artifact@v4
        with:
          if-no-files-found: error
          name: odiff-${{ matrix.artifact }}.exe
          path: odiff-${{ matrix.artifact }}.exe
          retention-days: 14

  publish:
    name: Publish release
    needs: [build]
    if: startsWith(github.ref, 'refs/tags/')
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v1

      - name: Download built binaries
        uses: actions/download-artifact@v4
        with:
          pattern: odiff-*.exe
          merge-multiple: true
          path: npm_package/raw_binaries

      - name: Set up Node.js
        uses: actions/setup-node@v4
        with:
          node-version: '20'
          cache: 'npm'
          always-auth: true
          registry-url: 'https://registry.npmjs.org'
          cache-dependency-path: 'package-lock.json'

      - name: Publish npm package
        working-directory: npm_package
        run: npm publish
        env:
          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
          
      - name: Create github release
        uses: softprops/action-gh-release@v1
        with:
          files: "npm_package/raw_binaries/*"
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}