version: 2.1

commands:
  install_dependencies:
    description: "Installs dependencies and uses CircleCI's cache"
    steps:
      - checkout
      - restore_cache:
          keys:
            - dependencies-{{ checksum "yarn.lock" }}
            - dependencies-
      - run:
          command: |
            yarn install
      - save_cache:
          paths:
            - node_modules
          key: dependencies-{{ checksum "yarn.lock" }}

jobs:
  style:
    docker:
      - image: node:latest
    steps:
      - install_dependencies
      - run:
          name: prettier
          command: |
            yarn prettier --check
      - run:
          name: lint
          command: |
            yarn lint

  dashboard:
    docker:
      - image: node:latest
    steps:
      - install_dependencies
      - run:
          name: typecheck
          command: |
            yarn typecheck
      - run:
          name: test
          command: |
            yarn test --coverage
      - run:
          name: coverage
          command: |
            yarn coverage

  build:
    docker:
      - image: docker:latest
    steps:
      - checkout
      - setup_remote_docker:
          version: 20.10.7
      - run:
          name: Load Docker image layer cache
          command: |
            set +o pipefail
            docker load -i /caches/app.tar | true
      - run:
          name: Build application Docker image
          command: |
            docker build --cache-from=app -t app .
      - run:
          name: Save Docker image layer cache
          command: |
            mkdir -p /caches
            docker save -o /caches/app.tar app
      - save_cache:
          key: v1-{{ .Branch }}-{{ epoch }}
          paths:
            - /caches/app.tar
      - deploy:
          name: Push application Docker image
          command: |
            docker login --username ${DOCKER_USER} --password ${DOCKER_PASSWORD}
            docker tag app phntxx/dashboard:latest
            docker push phntxx/dashboard:latest

workflows:
  version: 2
  dashboard:
    jobs:
      - style
      - dashboard
      - build:
          requires:
            - style
            - dashboard