build.yml

name: Build for Ubuntu-x64 and Windows-x64

on:
  workflow_dispatch:
    inputs:
      create_release:
        description: "Should a release be created?"
        required: true
        default: "false"
        type: choice
        options:
          - "true"
          - "false"
  push: 

permissions:
  contents: write

jobs:
  build:
    name: Build Binaries
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-latest, windows-latest]  # Windows and Linux builds
    outputs:
      linuxx64_artifact: ${{ steps.prepare_linux_artifact.outputs.linuxx64_build }}
      windowsx64_matlab_artifact: ${{ steps.prepare_windows_matlab_artifact.outputs.windowsx64_matlab_build }}
      windowsx64_octave_artifact: ${{ steps.prepare_windows_octave_artifact.outputs.windowsx64_octave_build }}
    steps:
      - name: Check out repository
        uses: actions/checkout@v4
      - name: Set up MATLAB
        uses: matlab-actions/setup-matlab@v2  
      - name: run build (Linux)
        if: runner.os == 'Linux'
        shell: bash
        run: |
          mkdir build
          cd build
          cmake .. -DCMAKE_BUILD_TYPE=Release 
          cmake --build . --config Release -j
      - name: run build (Windows)
        if: runner.os == 'Windows'
        shell: bash
        run: |
          mkdir build
          cd build
          cmake .. -DCMAKE_BUILD_TYPE=Release 
          cmake --build . --config Release -j
      - name: Prepare artifact (Linux)
        id: prepare_linux_artifact
        if: runner.os == 'Linux'
        shell: bash
        run: |
          mkdir -p artifacts
          name="MEXlibCZI-linux-x64-$(git describe --always)"
          mkdir -p artifacts/${name}
          cp build/MEXlibCZI/MEXlibCZI.mexa64 artifacts/${name}/
          echo "artifactName=${name}" >> "$GITHUB_ENV"
          echo "artifactPath=artifacts/${name}" >> "$GITHUB_ENV"
          echo "linuxx64_build=${name}" >> "$GITHUB_OUTPUT"
      - name: install Octave (Windows)
        if: runner.os == 'Windows'
        shell: bash
        run: |
          choco install octave --no-progress
          # I am not sure how to find the octave-cli-executable now, so we search for the link in the start menu
          search_dir="/c/ProgramData/Microsoft/Windows/Start Menu/Programs"
          octave_link=$(find "$search_dir" -type f -name "Octave*CLI*.lnk" 2>/dev/null)
          octave_link_windows_path=$(cygpath -w "$octave_link")
          echo "octave_link=$octave_link"
          echo "octave_link_windows_path=$octave_link_windows_path"
          echo "OCTAVECLI_LINK=$octave_link_windows_path" >> "$GITHUB_ENV"
      - name: install Octave (Linux)
        if: runner.os == 'Linux'
        shell: bash
        run: |
          sudo apt install octave
      - name: build Octave mex-file (Windows)
        if: runner.os == 'Windows'
        shell: cmd
        run: |
          REM We compile the mex file for Octave within Octave itself, this seems the easiest way. The
          REM downside is that installing octave takes a long time.
          REM Note that we are using cmd.exe here, because it can "execute" the .lnk file.
          "%OCTAVECLI_LINK%" --version
          REM echo "cd %GITHUB_WORKSPACE%/OctaveMex ,  mkoctfile --mex octavelibczi.c"
          set "GITHUB_WORKSPACE_FORWARD_SLASHES=%GITHUB_WORKSPACE:\=/%
          "%OCTAVECLI_LINK%" --eval "cd %GITHUB_WORKSPACE_FORWARD_SLASHES%/OctaveMex , mkoctfile --mex octavelibczi.c"
          # now, copy the libmexlibczi.dll to this folder
          cp build/MEXlibCZI/Release/libmexlibczi.dll %GITHUB_WORKSPACE%\OctaveMex
          dir %GITHUB_WORKSPACE%\OctaveMex
      - name: build Octave mex-file (Linux)
        if: runner.os == 'Linux'
        shell: cmd
        run: |
          cd OctaveMex
          octave --cli "mkoctfile --mex octavelibczi.c"
          cp build/MEXlibCZI/Release/libmexlibczi.so .
          ls 
      - name: Prepare MATLAB-mex artifact (Windows)
        id: prepare_windows_matlab_artifact
        if: runner.os == 'Windows'
        shell: bash
        run: |
          mkdir -p artifacts
          name="MATLAB-MEXlibCZI-windows-x64-$(git describe --always)"
          mkdir -p artifacts/${name}
          cp build/MEXlibCZI/Release/MEXlibCZI.mexw64 artifacts/${name}/
          echo "artifactName=${name}" >> "$GITHUB_ENV"
          echo "artifactPath=artifacts/${name}" >> "$GITHUB_ENV"
          echo "windowsx64_matlab_build=${name}" >> $GITHUB_OUTPUT
      - name: Upload MATLAB-mex artifacts
        uses: actions/upload-artifact@v4
        with:
          path: ${{ env.artifactPath }}/
          name: ${{ env.artifactName }}
      - name: Prepare Octave-mex artifact (Windows)
        id: prepare_windows_octave_artifact
        if: runner.os == 'Windows'
        shell: bash
        run: |
          mkdir -p artifacts
          name="Octave-MEXlibCZI-windows-x64-$(git describe --always)"
          mkdir -p artifacts/${name}
          cp $(cygpath "${GITHUB_WORKSPACE}")/libmexlibczi/libmexlibczi.dll artifacts/${name}/
          cp $(cygpath "${GITHUB_WORKSPACE}")/OctaveMex/octavelibczi.mex artifacts/${name}/
          echo "artifactName=${name}" >> "$GITHUB_ENV"
          echo "artifactPath=artifacts/${name}" >> "$GITHUB_ENV"
          echo "windowsx64_octave_build=${name}" >> $GITHUB_OUTPUT
      - name: Upload Octave-mex artifacts
        uses: actions/upload-artifact@v4
        if: runner.os == 'Windows'  # currently we only build Octave mex files on Windows
        with:
          path: ${{ env.artifactPath }}/
          name: ${{ env.artifactName }}

  release:
    name: Create GitHub Release
    runs-on: ubuntu-latest
    needs: build
    if: inputs.create_release == 'true'  # Only run if release is selected
    steps:
      - name: Check out repository
        uses: actions/checkout@v4
      - name: Download All Artifacts
        if: needs.build.outputs.linuxx64_artifact != '' || needs.build.outputs.windowsx64_matlab_artifact != ''
        uses: actions/download-artifact@v4
        with:
          path: ./artifacts  # download to a specific folder
      - name: Script to prepare release
        shell: bash
        run: |
          cd scripts
          mexlibczi_version=$(bash get_version.sh)
          cd ..
          git_version=$(git describe --always)
          echo "releaseName=version ${mexlibczi_version} (${git_version})" >> "$GITHUB_ENV"
          echo "tagName=v${mexlibczi_version}" >> "$GITHUB_ENV"

      - name: Release
        uses: softprops/action-gh-release@v2
        with:
          name: ${{ env.releaseName }}
          tag_name: ${{ env.tagName }}
          files: |
            ./artifacts/${{ needs.build.outputs.linuxx64_artifact }}/MEXlibCZI.mexa64
            ./artifacts/${{ needs.build.outputs.windowsx64_matlab_artifact }}/MEXlibCZI.mexw64
          prerelease: true