version: 2

workspace_root: &workspace_root
  ~/zerobounce

defaults: &defaults
  working_directory: *workspace_root
  docker:
    - image: circleci/ruby:2.4

attach_workspace: &attach_workspace
  attach_workspace:
    at: *workspace_root

restore_repo: &restore_repo
  restore_cache:
    name: Restore repository
    keys:
      - v1-repo-{{ .Branch }}-{{ .Revision }}

restore_gems: &restore_gems
  restore_cache:
    name: Restore gems
    keys:
      - v1-zerobounce-{{ checksum "Gemfile.lock" }}

jobs:
  checkout-code:
    <<: *defaults
    steps:
      - checkout
      - save_cache:
          key: v1-repo-{{ .Branch }}-{{ .Revision }}
          paths:
            - *workspace_root

  bundle-dependencies:
    <<: *defaults
    steps:
      - *restore_repo
      - *restore_gems
      - run:
          name: Install Bundler dependencies
          command: |
            bin/bundle install --path=vendor/bundle \
                               --jobs=4 \
                               --retry=3
      - run:
          name: Setup Code Climate test-reporter
          command: |
            mkdir -p tmp/
            curl -L https://codeclimate.com/downloads/test-reporter/test-reporter-latest-linux-amd64 > ./tmp/cc-test-reporter
            chmod +x ./tmp/cc-test-reporter
      - save_cache:
          key: v1-zerobounce-{{ checksum "Gemfile.lock" }}
          paths:
            - vendor/bundle
      - persist_to_workspace:
          root: *workspace_root
          paths:
            - vendor/bundle
            - tmp/cc-test-reporter

  run-specs:
    <<: *defaults
    parallelism: 2
    steps:
      - *restore_repo
      - *attach_workspace
      - run:
          name: Set bundler path
          command: bin/bundle --path vendor/bundle
      - run:
          name: Run tests
          command: |
            bin/bundle exec rspec --profile 10 \
                                  --format RspecJunitFormatter \
                                  --out test_results/rspec.xml \
                                  --format progress \
                                  $(circleci tests glob "spec/**/*_spec.rb" | circleci tests split --split-by=timings)
            ./tmp/cc-test-reporter format-coverage \
                                   -t simplecov \
                                   -o tmp/codeclimate.${CIRCLE_NODE_INDEX}.json \
                                   ${CIRCLE_ARTIFACTS}/coverage/.resultset.json
      - persist_to_workspace:
          root: *workspace_root
          paths:
            - tmp
      - store_test_results:
          path: test_results
      - store_artifacts:
          path: test_results
          destination: test-results
      - store_artifacts:
          path: coverage
          destination: test-coverage

  upload-coverage:
    <<: *defaults
    steps:
      - *attach_workspace
      - run:
          name: Upload coverage results to Code Climate
          command: |
            ./tmp/cc-test-reporter sum-coverage tmp/codeclimate.*.json -p 2 -o tmp/codeclimate.total.json
            ./tmp/cc-test-reporter upload-coverage -i tmp/codeclimate.total.json

  run-rubocop:
    <<: *defaults
    steps:
      - *restore_repo
      - *attach_workspace
      - run:
          name: Set bundler path
          command: bin/bundle --path vendor/bundle
      - run:
          name: Run rubocop
          command: bin/bundle exec rubocop

workflows:
  version: 2
  build-test:
    jobs:
      - checkout-code
      - bundle-dependencies:
          requires:
            - checkout-code
      - run-rubocop:
          requires:
            - bundle-dependencies
      - run-specs:
          requires:
            - bundle-dependencies
      - upload-coverage:
          requires:
            - run-specs