version: 2

references:
  workspace_root: &workspace_root ~/brainspan

  attach_workspace: &attach_workspace
    attach_workspace:
      at: *workspace_root

defaults: &defaults
  working_directory: *workspace_root
  docker:
    - image: circleci/node:8

jobs:
  build:
    <<: *defaults
    steps:
      - checkout
      - run:
          name: Set up .npmrc
          command: "echo //registry.npmjs.org/:_authToken=${NPM_TOKEN} > .npmrc"
      - restore_cache:
          key: npm-dependency-cache-{{ checksum "package.json" }}
      - run: "npm install"
      - save_cache:
          key: npm-dependency-cache-{{ checksum "package.json" }}
          paths:
            - ./node_modules
      - persist_to_workspace:
          root: *workspace_root
          paths:
            - .
  test:
    <<: *defaults
    steps:
      - *attach_workspace
      - run:
          name: Tests
          command: npm run test:ci
      - store_artifacts:
          path: coverage
          prefix: coverage
  publish:
    <<: *defaults
    steps:
      - checkout
      - run:
          name: Set up .npmrc
          command: "echo //registry.npmjs.org/:_authToken=${NPM_TOKEN} > .npmrc"
      - deploy:
          name: NPM Publish
          command: npm publish

workflows:
  version: 2
  build_test:
    jobs:
      - build:
          filters:
            branches:
              only: /.*/
      - test:
          requires:
            - build
          filters:
            branches:
              only: /.*/
  publish:
    jobs:
      - publish:
          filters:
            branches:
              ignore: /.*/
            tags:
              only: /v[0-9]+(\.[0-9]+)*(-\d+)?/