phases:
###########################################
- phase: Linux
###########################################
  variables:
    PYTHON_VERSION: 3.6
    CONDA_ENV: test-env
  queue:
    name: 'Hosted Linux Preview'
    parallel: 9
    matrix:
      regular:
        TASK: regular
      mpi:
        TASK: mpi
        PYTHON_VERSION: 2.7
      pylint: 
        TASK: pylint
      inference:
        TASK: if-else
      sdist:
        TASK: sdist
        PYTHON_VERSION: 3.4
      bdist:
        TASK: bdist
        PYTHON_VERSION: 3.5
      gpu_1:
        TASK: gpu 
        METHOD: source
      gpu_2:
        TASK: gpu 
        METHOD: pip
  steps:
  - task: CondaEnvironment@0
    inputs:
      environmentName: $(CONDA_ENV)
      packageSpecs: 'python=$(PYTHON_VERSION)' # Optional
      createOptions: '-q'
  - script: | 
      sudo apt-get update
      export LGB_VER=$(head -n 1 VERSION.txt)
      export AMDAPPSDK=$HOME/AMDAPPSDK
      export LD_LIBRARY_PATH="$AMDAPPSDK/lib/x86_64:$LD_LIBRARY_PATH"
      export OPENCL_VENDOR_PATH=$AMDAPPSDK/etc/OpenCL/vendors
      if [[ $TASK == "mpi" ]]; then
          sudo apt-get install -y libopenmpi-dev openmpi-bin
      fi
      if [[ $TASK == "gpu" ]]; then
          sudo apt-get install --no-install-recommends -y ocl-icd-opencl-dev libboost-dev libboost-system-dev libboost-filesystem-dev
          wget -q https://github.com/Microsoft/LightGBM/releases/download/v2.0.12/AMD-APP-SDKInstaller-v3.0.130.136-GA-linux64.tar.bz2
          tar -xjf AMD-APP-SDK*.tar.bz2
          mkdir -p $OPENCL_VENDOR_PATH
          sh AMD-APP-SDK*.sh --tar -xf -C $AMDAPPSDK
          mv $AMDAPPSDK/lib/x86_64/sdk/* $AMDAPPSDK/lib/x86_64/
          echo libamdocl64.so > $OPENCL_VENDOR_PATH/amdocl64.icd
      fi
      bash .vsts-ci/test.sh
  - task: PublishBuildArtifacts@1
    inputs:
      pathtoPublish: '$(Build.ArtifactStagingDirectory)' 
      artifactName: PackageAssets
      artifactType: container
###########################################
- phase: MacOS
###########################################
  variables:
    PYTHON_VERSION: 3.6
    CONDA_ENV: test-env
  queue:
    name: 'Hosted macOS Preview'
    parallel: 3
    matrix:
      regular:
        TASK: regular
        PYTHON_VERSION: 2.7
      sdist:
        TASK: sdist
        PYTHON_VERSION: 3.4
      bdist:
        TASK: bdist
        PYTHON_VERSION: 3.5
  steps:
  - script: |
      test -n $CC  && unset CC
      test -n $CXX && unset CXX
      rm '/usr/local/include/c++'
      brew install gcc@8
      export CXX=g++-8
      export CC=gcc-8
      wget -O conda.sh https://repo.continuum.io/miniconda/Miniconda${PYTHON_VERSION:0:1}-latest-MacOSX-x86_64.sh
      bash conda.sh -b -p $HOME/miniconda
      export PATH=$HOME/miniconda/bin:$PATH
      conda config --set always_yes yes --set changeps1 no
      conda create -q -n $CONDA_ENV python=$PYTHON_VERSION
      source activate $CONDA_ENV
      export LGB_VER=$(head -n 1 VERSION.txt)
      bash .vsts-ci/test.sh
  - task: PublishBuildArtifacts@1
    inputs:
      pathtoPublish: '$(Build.ArtifactStagingDirectory)' 
      artifactName: PackageAssets
      artifactType: container
###########################################
- phase: Windows
###########################################
  variables:
    PYTHON_VERSION: 3.6
    CONDA_ENV: test-env
  queue:
    name: 'Hosted VS2017'
    parallel: 4
    matrix:
      regular:
        TASK: regular
      sdist:
        TASK: sdist
        PYTHON_VERSION: 2.7
      bdist:
        TASK: bdist
        PYTHON_VERSION: 3.5
      # mingw:
      #   TASK: mingw
  steps:
  - task: CondaEnvironment@0
    inputs:
      environmentName: $(CONDA_ENV)
      packageSpecs: 'python=$(PYTHON_VERSION)' # Optional
      createOptions: '-q'
  - powershell: |
      conda install -q -y -n $env:CONDA_ENV numpy nose scipy scikit-learn pandas matplotlib python-graphviz pytest
      if ("$env:TASK" -eq "regular") {
        mkdir build; cd build
        cmake -DCMAKE_GENERATOR_PLATFORM=x64 .. ; cmake --build . --target ALL_BUILD --config Release
        cd ../python-package; python setup.py install -p
        cd ..
        pytest tests/c_api_test/test_.py
        cp Release/lib_lightgbm.dll $env:BUILD_ARTIFACTSTAGINGDIRECTORY
      } 
      elseif ("$env:TASK" -eq "sdist"){
        cd python-package; python setup.py sdist --formats gztar
        cd dist; pip install @(Get-ChildItem *.gz) -v 
        cd ../..
      }
      # elseif ("$env:TASK" -eq "mingw"){
      #   cd python-package; python setup.py sdist --formats gztar
      #   cd dist; pip install @(Get-ChildItem *.gz) --install-option=--mingw -v
      #   cd ../..
      # }
      else {
        cd python-package
        python setup.py bdist_wheel --plat-name=win-amd64 --universal
        cd dist; pip install @(Get-ChildItem *.whl)
        cp @(Get-ChildItem *.whl) $env:BUILD_ARTIFACTSTAGINGDIRECTORY
        cd ../..
      }
      pytest tests/python_package_test
      cd examples/python-guide
      @("import matplotlib", "matplotlib.use('Agg')") + (Get-Content "plot_example.py") | Set-Content "plot_example.py"
      (Get-Content "plot_example.py").replace('graph.render(view=True)', 'graph.render(view=False)') | Set-Content "plot_example.py"
      foreach ($file in @(Get-ChildItem *.py)) {
        python $file
        if ($LastExitCode -ne 0) { $host.SetShouldExit($LastExitCode) }
      }  # run all examples
  - task: PublishBuildArtifacts@1
    inputs:
      pathtoPublish: '$(Build.ArtifactStagingDirectory)' 
      artifactName: PackageAssets
      artifactType: container

################################################################################
- phase: Package
################################################################################
  dependsOn:
  - Linux
  - MacOS
  - Windows
  queue:
    name: 'Hosted VS2017'
  steps:
  # Download all agent packages from all previous phases
  - task: DownloadBuildArtifacts@0
    displayName: Download package assets
    inputs:
      artifactName: PackageAssets
      downloadPath: $(Build.SourcesDirectory)/binaries
  - powershell: |
      $client = new-object System.Net.WebClient
      $client.DownloadFile("https://dist.nuget.org/win-x86-commandline/latest/nuget.exe",".nuget/nuget.exe")
  - script: |
      cd .nuget
      python create_nuget.py %BUILD_SOURCESDIRECTORY%/binaries/PackageAssets
      nuget.exe pack LightGBM.nuspec
      xcopy *.nupkg %BUILD_ARTIFACTSTAGINGDIRECTORY%
  - task: PublishBuildArtifacts@1
    inputs:
      pathtoPublish: '$(Build.ArtifactStagingDirectory)' 
      artifactName: Nuget
      artifactType: container
