version: 2
jobs:
  # =======================================================================================
  # Python 3.6 testing.
  # =======================================================================================
  test-3.6:
    docker:
      - image: python:3.6
    working_directory: ~/spleeter
    steps:
      - checkout
      - restore_cache:
          key: models-{{ checksum "spleeter/model/__init__.py" }}
      - run:
          name: install ffmpeg
          command: apt-get update && apt-get install -y ffmpeg
      - run:
          name: install python dependencies
          command: pip install -r requirements.txt && pip install pytest pytest-xdist
      - run:
          name: run tests
          command: make test
      - save_cache:
          key: models-{{ checksum "spleeter/model/__init__.py" }}
          paths:
            - "pretrained_models"
  # =======================================================================================
  # Python 3.7 testing.
  # =======================================================================================
  test-3.7:
    docker:
      - image: python:3.7
    working_directory: ~/spleeter
    steps:
      - checkout
      - restore_cache:
          key: models-{{ checksum "spleeter/model/__init__.py" }}
      - run:
          name: install ffmpeg
          command: apt-get update && apt-get install -y ffmpeg
      - run:
          name: install python dependencies
          command: pip install -r requirements.txt && pip install pytest pytest-xdist
      - run:
          name: run tests
          command: make test
      - save_cache:
          key: models-{{ checksum "spleeter/model/__init__.py" }}
          paths:
            - "pretrained_models"
  # =======================================================================================
  # Source distribution packaging.
  # =======================================================================================
  sdist:
    docker:
      - image: python:3
    steps:
      - checkout
      - run:  
          name: package source distribution
          command: make build
      - save_cache:
          key: sdist-{{ .Branch }}-{{ checksum "setup.py" }}
          paths:
            - dist
  # =======================================================================================
  # PyPi deployment.
  # =======================================================================================
  pypi-deploy:
    docker:
      - image: python:3
    steps:
      - checkout
      - restore_cache:
          key: sdist-{{ .Branch }}-{{ checksum "setup.py" }}
      - run:
          name: upload to PyPi
          # TODO: Infer destination regarding of branch.
          #       - master => production PyPi
          #       - other => testing PyPi
          command: make deploy
  # =======================================================================================
  # Conda distribution.
  # =======================================================================================
  conda-forge-deploy:
    docker:
      - image: python:3
    steps:
      - run:
          name: install dependencies
          command: apt-get update && apt-get install -y git openssl hub
      - run:
          name: checkout feedstock
          command: make feedstock
  # =======================================================================================
  # Docker build.
  # =======================================================================================
  docker-conda-cpu:
    docker:
      - image: docker:17.05.0-ce-git
    steps:
      - setup_remote_docker:
          docker_layer_caching: true
      - run:
          name: build image
          command: docker build -t spleeter:conda -f docker/cpu/conda.dockerfile .
  docker-conda-cpu-2stems:
    docker:
      - image: docker:17.05.0-ce-git
    steps:
      - setup_remote_docker:
          docker_layer_caching: true
      - run:
          name: build image
          command: docker build -t spleeter:2-stems-conda -f docker/cpu/conda-2stems.dockerfile .
  docker-conda-cpu-4stems:
    docker:
      - image: docker:17.05.0-ce-git
    steps:
      - setup_remote_docker:
          docker_layer_caching: true
      - run:
          name: build image
          command: docker build -t spleeter:4-stems-conda -f docker/cpu/conda-4stems.dockerfile .
  docker-conda-cpu-5stems:
    docker:
      - image: docker:17.05.0-ce-git
    steps:
      - setup_remote_docker:
          docker_layer_caching: true
      - run:
          name: build image
          command: docker build -t spleeter:5-stems-conda -f docker/cpu/conda-5stems.dockerfile .
  docker-3.6-cpu:
    docker:
      - image: docker:17.05.0-ce-git
    steps:
      - setup_remote_docker:
          docker_layer_caching: true
      - run:
          name: build image
          command: docker build -t spleeter:3.6 -f docker/cpu/python-3.6.dockerfile .
  docker-3.6-cpu-2stems:
    docker:
      - image: docker:17.05.0-ce-git
    steps:
      - setup_remote_docker:
          docker_layer_caching: true
      - run:
          name: build image
          command: docker build -t spleeter:3.6-2stems -f docker/cpu/python-3.6-2stems.dockerfile .
  docker-3.6-cpu-4stems:
    docker:
      - image: docker:17.05.0-ce-git
    steps:
      - setup_remote_docker:
          docker_layer_caching: true
      - run:
          name: build image
          command: docker build -t spleeter:3.6-4stems -f docker/cpu/python-3.6-4stems.dockerfile .
  docker-3.6-cpu-5stems:
    docker:
      - image: docker:17.05.0-ce-git
    steps:
      - setup_remote_docker:
          docker_layer_caching: true
      - run:
          name: build image
          command: docker build -t spleeter:3.6-5stems -f docker/cpu/python-3.6-5stems.dockerfile .
  docker-3.7-cpu:
    docker:
      - image: docker:17.05.0-ce-git
    steps:
      - setup_remote_docker:
          docker_layer_caching: true
      - run:
          name: build image
          command: docker build -t spleeter:3.7 -f docker/cpu/python-3.7.dockerfile .
  docker-3.7-cpu-2stems:
    docker:
      - image: docker:17.05.0-ce-git
    steps:
      - setup_remote_docker:
          docker_layer_caching: true
      - run:
          name: build image
          command: docker build -t spleeter:3.7-2stems -f docker/cpu/python-3.7-2stems.dockerfile .
  docker-3.7-cpu-4stems:
    docker:
      - image: docker:17.05.0-ce-git
    steps:
      - setup_remote_docker:
          docker_layer_caching: true
      - run:
          name: build image
          command: docker build -t spleeter:3.7-4stems -f docker/cpu/python-3.7-4stems.dockerfile .
  docker-3.7-cpu-5stems:
    docker:
      - image: docker:17.05.0-ce-git
    steps:
      - setup_remote_docker:
          docker_layer_caching: true
      - run:
          name: build image
          command: docker build -t spleeter:3.7-5stems -f docker/cpu/python-3.7-5stems.dockerfile .
workflows:
  version: 2
  spleeter-release-pipeline:
    jobs:
      - test-3.6
      - test-3.7
      - sdist:
          requires:
            - test-3.6
            - test-3.7
      - pypi-deploy:
          filters:
            branches:
              only:
                - master
          requires:
            - sdist
      - conda-forge-deploy:
          filters:
            branches:
              only:
                - master
          requires:
            - pypi-deploy
      - hold:
          type: approval
          requires:
            - pypi-deploy
            - conda-forge-deploy
          filters:
            branches:
              only:
                - master
      - docker-conda-cpu:
          requires:
            - hold
          filters:
            branches:
              only:
                - master
      - docker-conda-cpu-2stems:
          requires:
            - docker-conda-cpu
          filters:
            branches:
              only:
                - master
      - docker-conda-cpu-4stems:
          requires:
            - docker-conda-cpu
          filters:
            branches:
              only:
                - master
      - docker-conda-cpu-5stems:
          requires:
            - docker-conda-cpu
          filters:
            branches:
              only:
                - master
      - docker-3.6-cpu:
          requires:
            - hold
          filters:
            branches:
              only:
                - master
      - docker-3.6-cpu-2stems:
          requires:
            - docker-3.6-cpu
          filters:
            branches:
              only:
                - master
      - docker-3.6-cpu-4stems:
          requires:
            - docker-3.6-cpu
          filters:
            branches:
              only:
                - master
      - docker-3.6-cpu-5stems:
          requires:
            - docker-3.6-cpu
          filters:
            branches:
              only:
                - master
      - docker-3.7-cpu:
          requires:
            - hold
          filters:
            branches:
              only:
                - master
      - docker-3.7-cpu-2stems:
          requires:
            - docker-3.7-cpu
          filters:
            branches:
              only:
                - master
      - docker-3.7-cpu-4stems:
          requires:
            - docker-3.7-cpu
          filters:
            branches:
              only:
                - master
      - docker-3.7-cpu-5stems:
          requires:
            - docker-3.7-cpu
          filters:
            branches:
              only:
                - master