build-wasm-examples.yml

name: Build WASM Examples

on:
  workflow_dispatch:

env:
  PER_PAGE: 50

jobs:
  prepare-pages:
    name: Get Pages
    runs-on: ubuntu-latest
    outputs:
      pages: ${{ steps.pages.outputs.pages }}
    steps:
      - name: Checkout Bevy main branch
        uses: actions/checkout@v4
        with:
          repository: 'bevyengine/bevy'
          ref: 'latest'
      - name: Get Pages
        id: pages
        run: |
          example_count=`cat Cargo.toml | grep 'wasm = true' | wc -l`
          page_count=$((example_count / ${{ env.PER_PAGE }} + 1))
          echo "pages=`jq -n -c \"[range($page_count)]\"`" >> $GITHUB_OUTPUT
 
  wasm-examples:
    name: Build WASM Examples
    needs: prepare-pages
    runs-on: macos-latest
    strategy:
      matrix:
        page: ${{ fromJSON(needs.prepare-pages.outputs.pages) }}
        api: [webgl2, webgpu]
    steps:

      - name: Checkout Bevy latest tag
        uses: actions/checkout@v4
        with:
          repository: 'bevyengine/bevy'
          ref: 'latest'

      - name: Setup Rust
        uses: dtolnay/rust-toolchain@stable
        with:
          target: wasm32-unknown-unknown,x86_64-apple-darwin

      - name: Install WASM tooling
        run: |
          cargo install --force wasm-bindgen-cli
          mkdir ./binaryen
          wget -qO- https://github.com/WebAssembly/binaryen/releases/download/version_114/binaryen-version_114-x86_64-macos.tar.gz | tar xvz --strip-components 1 -C ./binaryen binaryen-version_114

      - name: Build WASM Examples
        run: |
          export PATH=$PATH:`pwd`/binaryen/bin
          cargo run -p example-showcase -- --per-page ${{ env.PER_PAGE }} --page ${{ matrix.page }} build-wasm-examples --content-folder wasm-examples --api ${{ matrix.api }} --website-hacks --optimize-size

      - name: Upload Generated Files
        uses: actions/upload-artifact@v4
        with:
          name: ${{ matrix.api }}-examples-${{ matrix.page }}
          path: wasm-examples

  cloudflare-upload:
      name: Upload to Cloudflare
      runs-on: ubuntu-latest
      needs: wasm-examples
      strategy:
        matrix:
          api: [webgl2, webgpu]  
      steps:
        
        - name: Download all artifacts
          uses: actions/download-artifact@v4

        - name: Group examples in one folder
          run: |
            mkdir ${{ matrix.api }}
            for file in ${{ matrix.api }}-examples-*
            do
              rsync -a $file/* ${{ matrix.api }}/
            done

        - name: Publish to Cloudflare Pages
          uses: cloudflare/pages-action@v1
          with:
            apiToken: ${{ secrets.CLOUDFLARE_PAGES }}
            accountId: 0e862a54d5c283c78d8d56adb6159df8
            projectName: bevy-${{ matrix.api }}-examples
            directory: ${{ matrix.api }}