version: 2
jobs:
  latest: &template
    docker:
      - image: circleci/node:10

    steps:
      - checkout

      # Restore any cached node_modules from the last
      # build, if package.json has the same checksum.
      - restore_cache:
          key: dependencies-{{ checksum "package.json" }}-{{ .Environment.CIRCLE_JOB }}

      - run:
          name: Install dependencies
          command: npm install --silent

      # Save the content of node_modules to cache for the next build.
      - save_cache:
          key: dependencies-{{ checksum "package.json" }}-{{ .Environment.CIRCLE_JOB }}
          paths:
            - node_modules

      - run:
          name: Test suite
          command: npm test -- --ci --reporters=jest-junit --runInBand --coverage
          environment:
            JEST_JUNIT_OUTPUT: test-results/jest/results.xml

      - run:
          name: Linting
          command: npm run lint -- --format junit -o test-results/eslint/results.xml

      - run:
          name: CLI smoke test
          command: node index.js -i tests/.test-data/tokens.yaml -o .circleci/output.json -o .circleci/output.css

      - run:
          name: Upload code coverage
          command: bash <(curl -s https://codecov.io/bash) -f ./coverage/lcov.info

      - store_test_results:
          path: test-results

  "node:10":
    <<: *template
    docker:
      - image: circleci/node:10

  "node:9":
    <<: *template
    docker:
      - image: circleci/node:9

  "node:8":
    <<: *template
    docker:
      - image: circleci/node:8

  "node:7":
    <<: *template
    docker:
      - image: circleci/node:7

workflows:
  version: 2
  build_and_test:
    jobs:
      - "latest"
      - "node:10"
      - "node:9"
      - "node:8"
      - "node:7"