version: 2
jobs:
  build-website:
    # setting the working_directory along with the checkout path allows us to not have
    # to cd into the website/ directory for commands
    working_directory: ~/project/website
    docker:
      - image: hashicorp/middleman-hashicorp:0.3.35
    steps:
      - checkout:
          path: ~/project

      # restores gem cache
      - restore_cache:
          key: static-site-gems-v1-{{ checksum "Gemfile.lock" }}

      - run:
          name: install gems
          command: bundle check || bundle install --path vendor/bundle --retry=3

      # saves gem cache if we have changed the Gemfile
      - save_cache:
          key: static-site-gems-v1-{{ checksum "Gemfile.lock" }}
          paths:
            - ~/project/website/vendor/bundle

      - run:
          name: middleman build
          command: bundle exec middleman build

      - run:
          name: website deploy
          command: ./scripts/deploy.sh

  # build frontend yarn cache
  frontend-cache:
    docker:
      - image: circleci/node:8
    steps:
      - checkout
      
      # cache yarn deps
      - restore_cache:
          key: consul-ui-v1-{{ checksum "ui-v2/yarn.lock" }}
      
      - run:
          name: install yarn packages
          command: cd ui-v2 && yarn install
      
      - save_cache:
          key: consul-ui-v1-{{ checksum "ui-v2/yarn.lock" }}
          paths:
            - ui-v2/node_modules
  
  # build ember so frontend tests run faster
  ember-build:
    docker:
      - image: circleci/node:8
    steps:
      - checkout
      - restore_cache:
          key: consul-ui-v1-{{ checksum "ui-v2/yarn.lock" }}
      - run: cd ui-v2 && yarn build-ci --output-path=dist

      # saves the build to a workspace to be passed to a downstream job
      - persist_to_workspace:
          root: ui-v2
          paths:
            - dist

  # run ember frontend tests
  ember-test:
    docker:
      - image: circleci/node:8-browsers
    environment:
      EMBER_TEST_PARALLEL: true #enables test parallelization with ember-exam
      EMBER_TEST_REPORT: test-results/report.xml #outputs test report for CircleCI test summary
    parallelism: 4
    steps:
      - checkout
      - restore_cache:
          key: consul-ui-v1-{{ checksum "ui-v2/yarn.lock" }}
      - attach_workspace:
          at: ui-v2
      - run:
          working_directory: ui-v2
          command: node_modules/ember-cli/bin/ember exam --split=$CIRCLE_NODE_TOTAL --partition=`expr $CIRCLE_NODE_INDEX + 1` --path dist --silent -r xunit
      - store_test_results:
          path: ui-v2/test-results

workflows:
  version: 2
  website:
    jobs:
      - build-website:
          context: static-sites
          filters:
            branches:
              only: stable-website
  frontend:
    jobs:
      - frontend-cache
      - ember-build:
          requires:
            - frontend-cache
      - ember-test:
          requires:
            - ember-build