name: Reusable Emscripten

on:
  workflow_call:

permissions: {}

env:
  FORCE_COLOR: 1

jobs:
  build-emscripten-reusable:
    name: 'build and test'
    runs-on: ubuntu-24.04
    timeout-minutes: 40
    steps:
    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
      with:
        persist-credentials: false
    - name: "Read Emscripten config"
      id: emscripten-config
      shell: python
      run: |
        import hashlib
        import json
        import os
        import tomllib
        from pathlib import Path

        config = tomllib.loads(Path("Platforms/emscripten/config.toml").read_text())
        h = hashlib.sha256()
        h.update(json.dumps(config["dependencies"], sort_keys=True).encode())
        h.update(Path("Platforms/emscripten/make_libffi.sh").read_bytes())
        h.update(b'1') # Update to explicitly bust cache
        emsdk_cache = Path(os.environ["RUNNER_TEMP"]) / "emsdk-cache"
        with open(os.environ["GITHUB_OUTPUT"], "a") as f:
            f.write(f"emscripten-version={config['emscripten-version']}\n")
            f.write(f"node-version={config['node-version']}\n")
            f.write(f"deps-hash={h.hexdigest()}\n")
        with open(os.environ["GITHUB_ENV"], "a") as f:
            f.write(f"EMSDK_CACHE={emsdk_cache}\n")
    - name: "Install Node.js"
      uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6.3.0
      with:
        node-version: ${{ steps.emscripten-config.outputs.node-version }}
    - name: "Cache Emscripten SDK"
      id: emsdk-cache
      uses: actions/cache@668228422ae6a00e4ad889ee87cd7109ec5666a7 # v5.0.4
      with:
        path: ${{ env.EMSDK_CACHE }}
        key: emsdk-${{ steps.emscripten-config.outputs.emscripten-version }}-${{ steps.emscripten-config.outputs.deps-hash }}
        restore-keys: emsdk-${{ steps.emscripten-config.outputs.emscripten-version }}
    - name: "Install Python"
      uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0
      with:
        python-version: '3.x'
    - name: "Runner image version"
      run: echo "IMAGE_OS_VERSION=${ImageOS}-${ImageVersion}" >> "$GITHUB_ENV"
    - name: "Install Emscripten"
      run: python3 Platforms/emscripten install-emscripten
    - name: "Configure build Python"
      run: python3 Platforms/emscripten configure-build-python -- --config-cache --with-pydebug
    - name: "Make build Python"
      run: python3 Platforms/emscripten make-build-python
    - name: "Make dependencies"
      run: >-
        python3 Platforms/emscripten make-dependencies
        ${{ steps.emsdk-cache.outputs.cache-hit == 'true' && '--check-up-to-date' || '' }}
    - name: "Configure host Python"
      run: python3 Platforms/emscripten configure-host --host-runner node -- --config-cache
    - name: "Make host Python"
      run: python3 Platforms/emscripten make-host
    - name: "Display build info"
      run: python3 Platforms/emscripten run --pythoninfo
    - name: "Test"
      run: python3 Platforms/emscripten run --test