main.yml

name: CI
on:

  workflow_dispatch:
  pull_request:
  push:
    branches:
     - main

  schedule:
    - cron: '0 2 * * *' # run at 2 AM UTC

jobs:
  emscripten_wasm_build:

    runs-on: ubuntu-latest

    strategy:
      fail-fast: false
      matrix:
        emsdk_ver: ["3.1.45"]

    steps:
      - uses: actions/checkout@v4

      - name: Get number of CPU cores
        uses: SimenB/github-actions-cpu-cores@v2

      - name: Install micromamba
        uses: mamba-org/setup-micromamba@v1
        with:
          environment-file: environment-wasm-build.yml
          environment-name: xeus-javascript-wasm-build

      ################################################################
      #  emsdk itself
      ################################################################
      - name: Setup emsdk
        shell: bash -l {0}
        run: |

          emsdk install ${{ matrix.emsdk_ver }}

      ################################################################
      # C++ build
      ################################################################
      - name: Build
        shell: bash -l {0}
        run: |

          emsdk activate ${{ matrix.emsdk_ver }}

          source $CONDA_EMSDK_DIR/emsdk_env.sh
          micromamba create -f environment-wasm-host.yml --platform=emscripten-wasm32

          mkdir build
          pushd build

          export EMPACK_PREFIX=$MAMBA_ROOT_PREFIX/envs/xeus-javascript-wasm-build
          export PREFIX=$MAMBA_ROOT_PREFIX/envs/xeus-javascript-wasm-host
          export CMAKE_PREFIX_PATH=$PREFIX
          export CMAKE_SYSTEM_PREFIX_PATH=$PREFIX

          emcmake cmake \
            -DCMAKE_BUILD_TYPE=Release                        \
            -DCMAKE_PREFIX_PATH=$PREFIX                       \
            -DCMAKE_INSTALL_PREFIX=$PREFIX                    \
            -DCMAKE_FIND_ROOT_PATH_MODE_PACKAGE=ON            \
            ..

          make -j${{ steps.cpu-cores.outputs.count }} install

      ################################################################
      # jupyterlite page
      ################################################################
      - name: Build jupyterlite page
        shell: bash -l {0}
        run: |
          export PREFIX=$MAMBA_ROOT_PREFIX/envs/xeus-javascript-wasm-host
          # build jupyterlite
          jupyter lite build  \
            --contents=notebooks \
            --XeusAddon.prefix=$PREFIX



      ################################################################
      # fix permissions
      ################################################################
      - name: Fix permissions
        run: |
          chmod -c -R +rX "build_wasm/_output/" | while read line; do
            echo "::warning title=Invalid file permissions automatically fixed::$line"
          done

      ################################################################
      # upload to github pages
      ################################################################
      - name: Upload Pages artifact
        uses: actions/upload-pages-artifact@v2
        with:
          path: _output

  # Deploy job (only for the repo and **not** for forks)

  deploy:
    # only run on main branch
    if: github.ref == 'refs/heads/main' && github.repository == 'jupyter-xeus/xeus-javascript'

    # Add a dependency to the build job
    needs: emscripten_wasm_build

    # Grant GITHUB_TOKEN the permissions required to make a Pages deployment
    permissions:
      contents: read   # to read the Pages artifact
      pages: write      # to deploy to Pages
      id-token: write   # to verify the deployment originates from an appropriate source

    # Deploy to the github-pages environment
    environment:
      name: github-pages
      url: ${{ steps.deployment.outputs.page_url }}

    # Specify runner + deployment step
    runs-on: ubuntu-latest
    steps:
      - name: Deploy to GitHub Pages
        id: deployment
        uses: actions/deploy-pages@v3 # or specific "vX.X.X" version tag for this action