name: CI (Emscripten)

on:
  workflow_call:

env:
  CTEST_OUTPUT_ON_FAILURE: 1

jobs:
  emscripten:
    name: CI

    runs-on: ubuntu-20.04
    container:
      # If you change this version, change the number in the cache step too.
      image: emscripten/emsdk:3.1.42

    steps:
    - name: Checkout
      if: github.event_name != 'workflow_dispatch'
      uses: actions/checkout@v4

    - name: Checkout (Manual)
      if: github.event_name == 'workflow_dispatch'
      uses: actions/checkout@v4
      with:
        ref: ${{ github.event.inputs.ref }}

    - name: Setup cache
      uses: actions/cache@v4
      with:
        path: /emsdk/upstream/emscripten/cache
        key: 3.1.42-${{ runner.os }}

    - name: Patch Emscripten to support LZMA
      run: |
        cd /emsdk/upstream/emscripten
        patch -p1 < ${GITHUB_WORKSPACE}/os/emscripten/emsdk-liblzma.patch

    - name: Build (host tools)
      run: |
        mkdir build-host
        cd build-host

        echo "::group::CMake"
        cmake .. -DOPTION_TOOLS_ONLY=ON
        echo "::endgroup::"

        echo "::group::Build"
        echo "Running on $(nproc) cores"
        cmake --build . -j $(nproc) --target tools
        echo "::endgroup::"

    - name: Install GCC problem matcher
      uses: ammaraskar/gcc-problem-matcher@master

    - name: Build
      run: |
        mkdir build
        cd build

        echo "::group::CMake"
        emcmake cmake .. -DHOST_BINARY_DIR=../build-host
        echo "::endgroup::"

        echo "::group::Build"
        echo "Running on $(nproc) cores"
        cmake --build . -j $(nproc) --target openttd
        echo "::endgroup::"