version: 2.1
commands:
  restore_cached_venv:
    description: "Restores a cached venv"
    parameters:
      reqs_checksum:
        type: string
        default: "1234"
      venv_name:
        type: string
        default: "default-name"
    steps:
      - restore_cache:
          keys:
            - << parameters.venv_name >>-venv-<< parameters.reqs_checksum >>
            # fallback to using the latest cache if no exact match is found
            - << parameters.venv_name >>-venv-
  save_cached_venv:
    description: "Saves a venv into a cache"
    parameters:
      reqs_checksum:
        type: string
        default: "1234"
      venv_path:
        type: string
        default: "venv"
      venv_name:
        type: string
        default: "default-name"
    steps:
      - save_cache:
          key: << parameters.venv_name >>-venv-<< parameters.reqs_checksum >>
          paths: << parameters.venv_path >>
jobs:
  checkout_specs:
    docker:
      - image: circleci/python:3.6
    working_directory: ~/specs-repo
    steps:
      # Restore git repo at point close to target branch/revision, to speed up checkout
      - restore_cache:
          keys:
            - v1-specs-repo-{{ .Branch }}-{{ .Revision }}
            - v1-specs-repo-{{ .Branch }}-
            - v1-specs-repo-
      - checkout
      - run:
          name: Clean up git repo to reduce cache size
          command: git gc
      # Save the git checkout as a cache, to make cloning next time faster.
      - save_cache:
          key: v1-specs-repo-{{ .Branch }}-{{ .Revision }}
          paths:
            - ~/specs-repo
  install_env:
    docker:
      - image: circleci/python:3.6
    working_directory: ~/specs-repo
    steps:
      - restore_cache:
          key: v1-specs-repo-{{ .Branch }}-{{ .Revision }}
      - restore_cached_venv:
          venv_name: v1-pyspec
          reqs_checksum: '{{ checksum "test_libs/pyspec/requirements.txt" }}-{{ checksum "test_libs/pyspec/requirements-testing.txt" }}'
      - run:
          name: Install pyspec requirements
          command: make install_test && make install_lint
      - save_cached_venv:
          venv_name: v1-pyspec
          reqs_checksum: '{{ checksum "test_libs/pyspec/requirements.txt" }}-{{ checksum "test_libs/pyspec/requirements-testing.txt" }}'
          venv_path: ./test_libs/pyspec/venv
  test:
    docker:
      - image: circleci/python:3.6
    working_directory: ~/specs-repo
    steps:
      - restore_cache:
          key: v1-specs-repo-{{ .Branch }}-{{ .Revision }}
      - restore_cached_venv:
          venv_name: v1-pyspec
          reqs_checksum: '{{ checksum "test_libs/pyspec/requirements.txt" }}-{{ checksum "test_libs/pyspec/requirements-testing.txt" }}'
      - run:
          name: Run py-tests
          command: make citest
      - store_test_results:
          path: test_libs/pyspec/test-reports
  lint:
    docker:
      - image: circleci/python:3.6
    working_directory: ~/specs-repo
    steps:
      - restore_cache:
          key: v1-specs-repo-{{ .Branch }}-{{ .Revision }}
      - restore_cached_venv:
          venv_name: v1-pyspec
          reqs_checksum: '{{ checksum "test_libs/pyspec/requirements.txt" }}-{{ checksum "test_libs/pyspec/requirements-testing.txt" }}'
      - run:
          name: Run linter
          command: make lint
workflows:
  version: 2.1
  test_spec:
    jobs:
      - checkout_specs
      - install_env:
          requires:
            - checkout_specs
      - test:
          requires:
            - install_env
      - lint:
          requires:
            - test