name: CMake on multiple platforms

on:
  push:
    tags: 
      - "v*"
  workflow_dispatch:

jobs:
  build:
    runs-on: ${{ matrix.os }}

    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-latest, windows-latest, macos-latest, ubuntu-latest]
        build_type: [Release]
        c_compiler: [gcc, clang, cl, emcc]
        include:
          - os: windows-latest
            c_compiler: cl
            cpp_compiler: cl
            platform: Windows
          - os: ubuntu-latest
            c_compiler: gcc
            cpp_compiler: g++
            platform: Linux-gcc
          - os: ubuntu-latest
            c_compiler: clang
            cpp_compiler: clang++
            platform: Linux-clang
          - os: macos-latest
            c_compiler: clang
            cpp_compiler: clang++
            platform: MacOS
          - os: ubuntu-latest
            c_compiler: emcc
            cpp_compiler: em++
            build_type: Release
            platform: Web
        exclude:
          - os: windows-latest
            c_compiler: gcc
          - os: windows-latest
            c_compiler: clang
          - os: windows-latest
            c_compiler: emcc
          - os: ubuntu-latest
            c_compiler: cl
          - os: macos-latest
            c_compiler: gcc
          - os: macos-latest
            c_compiler: cl
          - os: macos-latest
            c_compiler: emcc

    steps:
    - uses: actions/checkout@v4

    - name: Set reusable strings
      id: strings
      shell: bash
      run: |
        echo "build-output-dir=${{ github.workspace }}/build" >> "$GITHUB_OUTPUT"

    - name: Cache CMake files
      uses: actions/cache@v3
      with:
        path: |
          ~/.cmake
          ${{ github.workspace }}/build/_deps
        key: ${{ runner.os }}-cmake-${{ matrix.c_compiler }}-${{ hashFiles('**/CMakeLists.txt', '**/*.cmake') }}
        restore-keys: |
          ${{ runner.os }}-cmake-${{ matrix.c_compiler }}-
          ${{ runner.os }}-cmake-

    - name: Cache emsdk
      if: matrix.c_compiler == 'emcc'
      uses: actions/cache@v3
      with:
        path: |
          emsdk-cache
        key: ${{ runner.os }}-emsdk-${{ hashFiles('.github/workflows/**') }}
        restore-keys: |
          ${{ runner.os }}-emsdk-

    - name: Setup Emscripten
      if: matrix.c_compiler == 'emcc'
      uses: mymindstorm/setup-emsdk@v12
      with:
        actions-cache-folder: emsdk-cache

    - name: Configure CMake
      run: >
        cmake -B ${{ steps.strings.outputs.build-output-dir }}
        -DCMAKE_CXX_COMPILER=${{ matrix.cpp_compiler }}
        -DCMAKE_C_COMPILER=${{ matrix.c_compiler }}
        -DCMAKE_BUILD_TYPE=${{ matrix.build_type }}
        ${{ matrix.c_compiler == 'emcc' && '-DPLATFORM=Web' || '' }}
        -S ${{ github.workspace }}

    - name: Build
      run: cmake --build ${{ steps.strings.outputs.build-output-dir }} --config ${{ matrix.build_type }}

    - name: Test
      working-directory: ${{ steps.strings.outputs.build-output-dir }}
      run: ctest --build-config ${{ matrix.build_type }}

    - name: Upload Web Build
      if: matrix.platform == 'Web'
      uses: actions/upload-artifact@v4
      with:
        name: ${{ matrix.platform }}-build
        path: ${{ steps.strings.outputs.build-output-dir }}/*.html

    - name: Upload Windows Build
      if: matrix.platform == 'Windows'
      uses: actions/upload-artifact@v4
      with:
        name: ${{ matrix.platform }}-build
        path: ${{ steps.strings.outputs.build-output-dir }}/${{ matrix.build_type }}/*.exe

    - name: Upload Linux Build
      if: contains(matrix.platform, 'Linux')
      uses: actions/upload-artifact@v4
      with:
        name: ${{ matrix.platform }}-build
        path: ${{ steps.strings.outputs.build-output-dir }}/*
        exclude: |
          **/*.cmake
          **/*.txt
          **/*.json
          **/*.a
          **/*.o
          **/*.d
          **/*.make
          **/*.internal
          **/*.marks
          **/Makefile
          **/.ninja*
          **/*.ninja
          **/CMakeFiles/**

    - name: Upload MacOS Build
      if: matrix.platform == 'MacOS'
      uses: actions/upload-artifact@v4
      with:
        name: ${{ matrix.platform }}-build
        path: ${{ steps.strings.outputs.build-output-dir }}/*
        exclude: |
          **/*.cmake
          **/*.txt
          **/*.json
          **/*.a
          **/*.o
          **/*.d
          **/*.make
          **/*.internal
          **/*.marks
          **/Makefile
          **/.ninja*
          **/*.ninja
          **/CMakeFiles/**