main.yml

name: CI

on:
  push:
  workflow_dispatch:  # This allows you to manually trigger the workflow from the GitHub UI

jobs:
  prepare: # creates a timestamp once to be used on all matrix jobs
    runs-on: ubuntu-latest
    outputs:
      timestamp: ${{ steps.timestamp.outputs.timestamp }}
    steps:
      - name: Generate timestamp
        id: timestamp
        run: echo "::set-output name=timestamp::$(date +%Y%m%d%H%M%S)"

      - name: Save timestamp
        uses: actions/upload-artifact@v3
        with:
          name: timestamp
          path: ${{ steps.timestamp.outputs.timestamp }}
          
  build:
    needs: prepare
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-latest, macos-latest, windows-latest]
        include: 
        - os: ubuntu-latest
          CMAKE_ARGS: ""

        - os:  macos-latest
          CMAKE_ARGS: -DCMAKE_CXX_COMPILER=clang++ -DCMAKE_C_COMPILER=clang -DCMAKE_OSX_DEPLOYMENT_TARGET=10.9   

        - os: windows-latest
          CMAKE_ARGS: -G"Visual Studio 17 2022" -A"x64"

    steps:
    - name: Download timestamp
      uses: actions/download-artifact@v3
      with:
        name: timestamp

    - name: Read timestamp and create tag name
      id: set_env
      run: echo "TAG_NAME=$(cat timestamp)" >> $GITHUB_ENV
              
    - uses: actions/checkout@v4
      with:
        path: contrib
        
    - name: Setup cmake
      uses: jwlawson/actions-setup-cmake@v2
      with:
        cmake-version: '3.29.x'
        
    - name: Install prerequisites
      shell: bash
      run: |
         if [ "$RUNNER_OS" == "Linux" ]; then
              sudo apt-get -y install make autoconf automake tar patch libtool gcc
         elif [ "$RUNNER_OS" == "Windows" ]; then
              #choco install important_windows_software
              echo "Nothing to install"
         elif [ "$RUNNER_OS" == "macOS" ]; then
              brew install autoconf automake libtool
         else
              echo "$RUNNER_OS not supported"
              exit 1
         fi

    # https://github.com/marketplace/actions/visual-studio-shell
    - name: Set up Visual Studio shell
      uses: egor-tensin/vs-shell@v2
      with:
        arch: x64

#    - name: Print folder structure (Windows) for debugging
#      if: runner.os == 'Windows'
#      run: tree D:\ /f /a
#      shell: cmd

    # TODO use appropriate number of cores
    - name: Build contrib
      run: |
           mkdir "${{ github.workspace }}/contrib-build"
           cd "${{ github.workspace }}/contrib-build"
           cmake ${{matrix.CMAKE_ARGS}} -DBUILD_TYPE=ALL -DNUMBER_OF_JOBS=4 ${{ github.workspace }}/contrib
           cmake ${{matrix.CMAKE_ARGS}} -DBUILD_TYPE=OPENMP -DNUMBER_OF_JOBS=4 ${{ github.workspace }}/contrib

    - name: Configure Git for Tagging
      if: github.event_name == 'workflow_dispatch' # MANUAL RELEASE TRIGGER
      run: |
        git config --global user.name 'GitHub Actions'
        git config --global user.email 'actions@github.com'

#    - name: Create and Push Tag
#      if: github.event_name == 'workflow_dispatch' && runner.os == 'Windows' # MANUAL RELEASE TRIGGER
#      env:
#        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
#      run: |
#        cd "${{ github.workspace }}/contrib"
#        $TAG_NAME="release-" + (Get-Date -Format "yyyyMMddHHmmss")
#        echo "TAG_NAME=$TAG_NAME" >> $GITHUB_ENV
#        git tag $TAG_NAME
#        git push origin $TAG_NAME
#      shell: 'pwsh'
# should work with bash on windows as well, see below

    - name: Create and Push Tag
      if: github.event_name == 'workflow_dispatch' # MANUAL RELEASE TRIGGER
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      run: |
        cd "${{ github.workspace }}/contrib"
        git tag $TAG_NAME
        git push origin $TAG_NAME
      shell: 'bash'      

    # TODO hope that they finally release a decent uploading action.
    - name: Clean build and package
      shell: bash
      run: |
           cd "${{ github.workspace }}/contrib-build"
           rm -rf archives
           rm -rf src
           rm -rf CMakeFiles    
           # Creating a tar.gz archive of the contrib-build directory
           tar czf "contrib_build-${{ runner.os }}.tar.gz" $(ls -d lib) $(ls -d bin) $(ls -d include) $(ls -d share)           

    - name: Create Release
      if: github.event_name == 'workflow_dispatch'
      id: create_release
      uses: softprops/action-gh-release@v1
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      with:
        tag_name: ${{ env.TAG_NAME }}  # Explicitly specify the tag name for the release
        files: |
          ${{ github.workspace }}/contrib-build/contrib_build-${{runner.os}}.tar.gz

#    - uses: actions/upload-artifact@v4
#      if: github.event_name == 'workflow_dispatch'
#      with:
#        name: contrib-build-${{runner.os}}
#        path: ${{ github.workspace }}/contrib-build