name: Linux & Windows CMake Build

on:
  # Allow manual call
  workflow_dispatch:
  # Allow use in other workflows (such as release)
  worlflow_call:
    inputs:
      release:
        required: false
        type: bool
        default: false
      release_tag:
        required: false
        type: string
  # Run on push to main
  push:
    branches:
    - main
  # Run on PR to main
  pull_request:
    branches:
    - main

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

    strategy:
      # Set fail-fast to false to ensure that feedback is delivered for all matrix combinations. Consider changing this to true when your workflow is stable.
      fail-fast: false

      # Set up a matrix to run the following 3 configurations:
      # 1. <Windows, Release, latest MSVC compiler toolchain on the default runner image, default generator>
      # 2. <Linux, Release, latest GCC compiler toolchain on the default runner image, default generator>
      # 3. <Linux, Release, latest Clang compiler toolchain on the default runner image, default generator>
      #
      # To add more build types (Release, Debug, RelWithDebInfo, etc.) customize the build_type list.
      matrix:
        os: [ubuntu-latest, windows-latest]
        build_type: [Release]
        c_compiler: [gcc, cl]
        include:
          - os: windows-latest
            c_compiler: cl
            cpp_compiler: cl
          - os: ubuntu-latest
            c_compiler: gcc
            cpp_compiler: g++
        exclude:
          - os: windows-latest
            c_compiler: gcc
          - os: ubuntu-latest
            c_compiler: cl

    outputs:
      build_dir: ${{ steps.strings.outputs.build-output-dir }}

    steps:
    - uses: actions/checkout@v4

    - name: Set reusable strings
      # Turn repeated input strings (such as the build output directory) into step outputs. These step outputs can be used throughout the workflow file.
      id: strings
      shell: bash
      run: |
        echo "build-output-dir=${{ github.workspace }}/build" >> "$GITHUB_OUTPUT"

    - name: Configure CMake for Linux
      if: matrix.os == 'ubuntu-latest'
      # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.
      # See https://cmake.org/cmake/help/latest/variable/CMAKE_BUILD_TYPE.html?highlight=cmake_build_type
      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 }}
        -S ${{ github.workspace }}

    - name: Configure CMake for Windows x86
      if: matrix.os == 'windows-latest'
      # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.
      # See https://cmake.org/cmake/help/latest/variable/CMAKE_BUILD_TYPE.html?highlight=cmake_build_type
      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 }}
        -S ${{ github.workspace }}
        -A Win32 -T host=x86

    - name: Build
      # Build your program with the given configuration. Note that --config is needed because the default Windows generator is a multi-config generator (Visual Studio generator).
      run: cmake --build ${{ steps.strings.outputs.build-output-dir }} --config ${{ matrix.build_type }}

    # Upload non-release DLL to artifacts
    - name: Upload Windows DLL
      if: ${{ (matrix.os == 'windows-latest') && !(inputs.release) }}
      uses: actions/upload-artifact@v4
      with:
        name: libvocoder-win-x86
        path: ${{ steps.strings.outputs.build-output-dir }}/${{ matrix.build_type }}/libvocoder.dll

    # Upload non-release .SO to artifacts
    - name: Upload Linux SO
      if: if: ${{ (matrix.os == 'ubuntu-latest') && !(inputs.release) }}
      uses: actions/upload-artifact@v4
      with:
        name: libvocoder-linux
        path: ${{ steps.strings.outputs.build-output-dir }}/libvocoder.so

    # (Release-Only) Upload Release Windows .zip to release
    - name: Upload Windows DLL Release
      if: ${{ (matrix.os == 'windows-latest') && (inputs.release) }}
      env:
        GITHUB_TOKEN: ${{ github.token }}
      run: |
        cd ${{ steps.strings.outputs.build-output-dir }}/${{ matrix.build_type }}
        Compress-Archive -Path ./libvocoder.dll -Destination ./libvocoder-${{ inputs.release_tag }}-win-x86.zip
        gh release upload ${{ inputs.release_tag }} ./libvocoder-${{ inputs.release_tag }}-win-x86.zip

    # (Release-Only) Upload release linux .tar.gz to release
    - name: Upload Linux Release DLL
      if: ${{ (matrix.os == 'ubuntu-latest') && (inputs.release) }}
      env:
        GITHUB_TOKEN: ${{ github.token }}
      run: |
        cd ${{ steps.strings.outputs.build-output-dir }}
        tar -czvf ./libvocoder-${{ inputs.release_tag }}-linux.tar.gz ./libvocoder.so
        gh release upload ${{ inputs.release_tag }} ./libvocoder-${{ inputs.release_tag }}-linux.tar.gz