name: CMake on multiple platforms

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

permissions:
  contents: write

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

    strategy:
      fail-fast: false
      matrix:
        include:
          - os: windows-latest
            c_compiler: cl
            cpp_compiler: cl
            platform: Windows
            artifact_name: windows
            build_type: Release

          - os: ubuntu-latest
            c_compiler: gcc
            cpp_compiler: g++
            platform: Linux
            artifact_name: linux
            build_type: Release

          - os: macos-latest
            c_compiler: clang
            cpp_compiler: clang++
            platform: MacOS
            artifact_name: macos
            build_type: Release

          - os: ubuntu-latest
            c_compiler: emcc
            cpp_compiler: em++
            platform: Web
            artifact_name: web
            build_type: Release

    steps:
    - uses: actions/checkout@v4

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

    - name: Install Linux Dependencies
      if: runner.os == 'Linux'
      run: |
        sudo apt-get update
        sudo apt-get install -y libasound2-dev mesa-common-dev libx11-dev libxrandr-dev libxi-dev xorg-dev libgl1-mesa-dev libglu1-mesa-dev vim-common

    - name: Install MacOS Dependencies
      if: runner.os == 'macOS'
      run: |
        brew install cmake
        xcode-select --install || true

    - name: Install Windows Dependencies
      if: runner.os == 'Windows'
      run: choco install vim -y
      shell: pwsh

    - name: Cache CMake files
      uses: actions/cache@v4
      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: Setup Emscripten
      if: matrix.c_compiler == 'emcc'
      uses: mymindstorm/setup-emsdk@v14
      with:
        version: latest

    - name: Setup Web Build Environment
      if: matrix.c_compiler == 'emcc'
      run: |
        mkdir -p ${{ steps.strings.outputs.build-output-dir }}/assets
        # cp -r assets/* ${{ steps.strings.outputs.build-output-dir }}/assets/

    - 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: Create Release ZIP (Windows)
      if: matrix.platform == 'Windows'
      run: |
        cd build/${{ matrix.build_type }}
        Compress-Archive -Path *.exe -DestinationPath ../../${{ matrix.artifact_name }}.zip
      shell: pwsh

    - name: Create Release ZIP (Web)
      if: matrix.platform == 'Web'
      run: |
        cd build
        zip -r ../${{ matrix.artifact_name }}.zip *.html *.js *.data *.wasm 2>/dev/null || true
      shell: bash

    - name: Create Release ZIP (Linux/macOS)
      if: matrix.platform == 'Linux' || matrix.platform == 'MacOS'
      run: |
        mkdir -p release_files
        cd build
        # Copy executable files (excluding libraries and build artifacts)
        for file in *; do
          if [ -f "$file" ] && [ -x "$file" ]; then
            case "$file" in
              *.so|*.a|*.dylib|*.sh) ;;
              *) cp "$file" ../release_files/ ;;
            esac
          fi
        done
        cd ../release_files
        if [ -n "$(ls -A 2>/dev/null)" ]; then
          zip ../${{ matrix.artifact_name }}.zip *
        fi
      shell: bash

    - name: Upload Build Artifacts
      uses: actions/upload-artifact@v4
      with:
        name: ${{ matrix.artifact_name }}
        path: ${{ matrix.artifact_name }}.zip