deploy-github-page.yml

name: Build and Deploy

on:
  workflow_dispatch:
  push:
    branches:
    - main
    
permissions:
  contents: read
  pages: write
  id-token: write
    
jobs:
  build:
    runs-on: ${{ matrix.os }}

    strategy:
      fail-fast: false
      matrix:
        include:
          - name: Github-page
            os: ubuntu-24.04
            emsdk_ver: "3.1.45"
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
        
      - name: install mamba
        uses: mamba-org/setup-micromamba@main
        with:
          init-shell: bash

      - name: Setup default Build Type on *nux
        if: ${{ runner.os != 'windows' }}
        run: |
          echo "ncpus=$(nproc --all)" >> $GITHUB_ENV
          
      - name: Setup emsdk
        shell: bash -l {0}
        run: |
          cd $HOME
          git clone https://github.com/emscripten-core/emsdk.git
          cd emsdk
          ./emsdk install  ${{ matrix.emsdk_ver }}    

      - name: Build xeus-cpp
        shell: bash -l {0}
        run: |
          $HOME/emsdk/emsdk activate ${{matrix.emsdk_ver}}
          source $HOME/emsdk/emsdk_env.sh
          micromamba create -f environment-wasm-host.yml --platform=emscripten-wasm32
          
          mkdir build
          pushd build

          export PREFIX=$MAMBA_ROOT_PREFIX/envs/xeus-cpp-wasm-host 
          echo "PREFIX=$PREFIX" >> $GITHUB_ENV
          export CMAKE_PREFIX_PATH=$PREFIX
          export CMAKE_SYSTEM_PREFIX_PATH=$PREFIX
          export SYSROOT_PATH=$HOME/emsdk/upstream/emscripten/cache/sysroot

          emcmake cmake \
            -DCMAKE_BUILD_TYPE=Release                        \
            -DCMAKE_PREFIX_PATH=$PREFIX                       \
            -DCMAKE_INSTALL_PREFIX=$PREFIX                    \
            -DXEUS_CPP_EMSCRIPTEN_WASM_BUILD=ON               \
            -DCMAKE_FIND_ROOT_PATH_MODE_PACKAGE=ON            \
            -DSYSROOT_PATH=$SYSROOT_PATH                      \
            ..
          emmake make -j  ${{ env.ncpus }} install

      - name: Jupyter Lite integration 
        shell: bash -l {0}
        run: |
          micromamba create -n xeus-lite-host jupyterlite-core
          micromamba activate xeus-lite-host
          python -m pip install jupyterlite-xeus
          jupyter lite build --XeusAddon.prefix=${{ env.PREFIX }} --output-dir dist
          cp $PREFIX/bin/xcpp.data dist/extensions/@jupyterlite/xeus/static
          cp $PREFIX/lib/libclangCppInterOp.so dist/extensions/@jupyterlite/xeus/static
          mkdir -p dist/files
          mv notebooks dist/files
          mv README.md dist/files

      - name: Upload artifact
        uses: actions/upload-pages-artifact@v3
        with:
          path: ./dist

  deploy:
    needs: build
    permissions:
      pages: write
      id-token: write
    environment:
      name: github-pages
      url: ${{ steps.deployment.outputs.page_url }}
    runs-on: ubuntu-24.04
    steps:
      - name: Deploy to GitHub Pages
        id: deployment
        uses: actions/deploy-pages@v4