################################################################################
# Build and Test tidy on the latest versions of all of the major platforms. 
#
#   - Build on multiple operating systems, and where possible, multiple
#     architectures. On Windows, we will also build and test MingGW in
#     addition to MSVC.
#
#   - Report the version number for each binary that is built.
#
#   - Run each binary against the regression test suite.
#
################################################################################

name: Build and Test

on:
  push:
    paths:
      - 'src/**'
      - 'include/**'
      - '.github/workflows/**'
  pull_request:
    paths:
      - 'src/**'
      - 'include/**'
      - '.github/workflows/**'

jobs:

  build_and_test:
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        include:

         ############################################################
         # Ubuntu latest is a normal build with nothing special that
         # really need be done.
         ############################################################
         - os: ubuntu-latest
           name: Standard
           cmake_command: "cmake ../.. -DCMAKE_BUILD_TYPE=Release"
           build_command: "cmake --build . --config Release"
           vers_command: "./tidy --version"
           test_command: "ruby test.rb test"

         ############################################################
         # On macOS, we'll build both architectures.
         ############################################################
         - os: macOS-latest
           name: X86_64 & Arm64
           cmake_command: "cmake ../.. -DCMAKE_BUILD_TYPE=Release '-DCMAKE_OSX_ARCHITECTURES=x86_64;arm64'"
           build_command: "cmake --build . --config Release"
           vers_command: "./tidy --version"
           test_command: "ruby test.rb test"

         ############################################################
         # The standard Windows build is perfectly vanilla, and as
         # of now is using MSVC 19.
         ############################################################
         - os: windows-latest
           name: MSVC
           cmake_command: "cmake ../.. -DCMAKE_BUILD_TYPE=Release"
           build_command: "cmake --build . --config Release"
           vers_command: "./tidy.exe --version"
           test_command: "ruby test.rb test"
           
         ############################################################
         # We'll also build using MinGW on Windows, because it's
         # always nice to support FOSS toolchains. While we could
         # do this another way, we'll use the windows-2016 runner
         # to distinguish it from the windows-latest runner.
         ############################################################
         - os: windows-2016
           name: MinGW
           cmake_command: "cmake ../.. -DCMAKE_BUILD_TYPE=Release -G 'MinGW Makefiles'"
           build_command: "cmake --build . --config Release"
           vers_command: "./tidy --version"
           test_command: "ruby test.rb test"
         
         ############################################################
         # We'll also build using Cygwin on Windows, because even
         # Windows people sometimes dislike Windows. While we could
         # do this another way, we'll use the windows-2019 runner to
         # distinguish it from the windows-latest runner.
         # Note: only the `tidy` target will be built (without the
         # man page) for this runner, because xltproc has issues
         # loading files in the virtual environment. The man page
         # is tested and builds perfectly fine on real installs.
         ############################################################
         - os: windows-2019
           name: Cygwin
           cmake_command: "cmake ../.. -DCMAKE_BUILD_TYPE=Release"
           build_command: "cmake --build . --target tidy --config Release"
           vers_command: "./tidy --version"
           test_command: "ruby test.rb test"

    steps:

    ############################################################
    # Checkput the repository.
    ############################################################
    - uses: actions/checkout@v2

    ############################################################
    # Install MinGW-w64 if needed for the current runner.
    ############################################################
    - name: Install MinGW-w64
      if: ${{matrix.os == 'windows-2016'}}
      uses: egor-tensin/setup-mingw@v2
      with:
        platform: x64
    
    ############################################################
    # Install Cygwin if needed for the current runner.
    ############################################################
    - name: Install Cygwin
      if: ${{matrix.os == 'windows-2019'}}
      uses: egor-tensin/setup-cygwin@v3
      with:
        platform: x64
        packages: make gcc-core gcc-g++ cmake
    
    ############################################################
    # Cmake and Make the project.
    ############################################################
    - name: Build
      working-directory: ${{github.workspace}}/build/cmake
      run: |
        ${{matrix.cmake_command}}
        ${{matrix.build_command}}
   
    ############################################################
    # Windows MSVC is the only oddball here; why does it 
    # install the binary into a subfolder, unlike all of the
    # other builds? Let's make everything else easier by 
    # relocating it to the same spot as all the other build
    # locations.
    ############################################################
    - name: Move the MSVC exe to someplace sensible
      if: ${{matrix.os == 'windows-latest'}}
      run: |
        move-item -path "${{github.workspace}}/build/cmake/Release/tidy.exe" -destination "${{github.workspace}}/build/cmake/"

    ############################################################
    # Just so that a human can make a quick sanity check.
    ############################################################
    - name: Show Version
      working-directory: ${{github.workspace}}/build/cmake
      run: |
        ${{matrix.vers_command}}

    ############################################################
    # Install Ruby for running our regression tests. It's quite
    # nice that this package is generic enough to work on all
    # of the different runners.
    ############################################################
    - uses: ruby/setup-ruby@v1
      with:
        ruby-version: 2.7
        bundler-cache: true
           
    ############################################################
    # Ensure that dependencies are met.
    ############################################################
    - name: Bundle Install 
      working-directory: ${{github.workspace}}/regression_testing
      run: |
        bundle install      

    ############################################################
    # Finally, check for regressions.
    ############################################################
    - name: Run Regression Test
      working-directory: ${{github.workspace}}/regression_testing
      run: |
        ${{matrix.test_command}}