version: 2.0

jobs:
  bundle_dependencies:
    docker:
      - image: circleci/ruby:2.4-node
      - image: circleci/postgres:9.4.12-alpine
    steps:
      - checkout
      - restore_cache:
          keys:
            - v1-bundle-{{ checksum "Gemfile.lock" }}
            - v1-bundle-
      - run: bundle install --path vendor/bundle
      - save_cache:
          key: v1-bundle-{{ checksum "Gemfile.lock" }}
          paths:
            - ~/circleci-demo-workflows/vendor/bundle

  rake_test:
    docker:
      - image: circleci/ruby:2.4-node
      - image: circleci/postgres:9.4.12-alpine
    steps:
      - checkout
      - restore_cache:
          keys:
            - v1-bundle-{{ checksum "Gemfile.lock" }}
            - v1-bundle-
      - run: bundle --path vendor/bundle
      - run: bundle exec rake db:create db:schema:load
      - run:
          name: Run tests
          command: bundle exec rake

  precompile_assets:
    docker:
      - image: circleci/ruby:2.4-node
      - image: circleci/postgres:9.4.12-alpine
    steps:
      - checkout
      - restore_cache:
          keys:
            - v1-bundle-{{ checksum "Gemfile.lock" }}
            - v1-bundle-
      - run: bundle --path vendor/bundle
      - run:
          name: Precompile assets
          command: bundle exec rake assets:precompile
      - save_cache:
          key: v1-assets-{{ checksum ".circle-sha" }}
          paths:
            - ~/circleci-demo-workflows/public/assets

  deploy:
    machine:
        enabled: true
    steps:
      - checkout
      - restore_cache:
          keys:
            - v1-bundle-{{ checksum "Gemfile.lock" }}
            - v1-bundle-
      - restore_cache:
          keys:
            - v1-assets-{{ checksum ".circle-sha" }}
      - run:
          name: Deploy to heroku
          command: echo stub for Heroku deploy

workflows:
  version: 2
  blog-demo-1:
    jobs:
      - bundle_dependencies
      - rake_test:
          requires:
            - bundle_dependencies
      - precompile_assets:
          requires:
            - bundle_dependencies
      - deploy:
          requires:
            - rake_test
            - precompile_assets