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# CircleCI configuration for Spectrum
version: 2.1

# Aliases
aliases:
  # Cache Management
  - &restore-yarn-cache
    keys:
      - v1-yarn-{{ arch }}-{{ checksum "package.json" }}
      - v1-yarn-{{ arch }}-

  - &save-yarn-cache
    paths:
      - node_modules
      - ~/.cache/yarn
    key: v1-yarn-{{ arch }}-{{ checksum "package.json" }}

  - &yarn |
    yarn

  - &install-rethinkdb
    name: Install RethinkDB 2.3.5
    command: |
      echo "deb http://download.rethinkdb.com/apt jessie main" | sudo tee /etc/apt/sources.list.d/rethinkdb.list
      wget -qO- http://download.rethinkdb.com/apt/pubkey.gpg | sudo apt-key add -
      sudo apt-get update
      sudo apt-get install rethinkdb=2.3.5~0jessie

  - &start-rethinkdb
    name: Start RethinkDB
    command: rethinkdb --bind all
    background: true

  - &setup-and-build-web
    name: Setup and build web
    command: |
      cp now-secrets.example.json now-secrets.json
      yarn run build:web

  - &build-api
    name: Build API
    command: yarn run build:api

  - &start-api
    name: Start the API in the background
    command: yarn run start:api:test
    background: true

  - &start-web
    name: Start web client in the background
    command: yarn run dev:web
    background: true

defaults: &defaults
  working_directory: ~/spectrum

js_defaults: &js_defaults
  <<: *defaults
  docker:
    - image: circleci/node:8

jobs:
  # Set up environment and install required dependencies
  checkout_environment:
    <<: *js_defaults
    steps:
      - checkout

      - restore_cache: *restore-yarn-cache
      - run: *yarn
      - save_cache: *save-yarn-cache

      - persist_to_workspace:
          root: .
          paths: .

  build_web:
    <<: *js_defaults
    steps:
      - attach_workspace:
          at: ~/spectrum
      - run: *setup-and-build-web
      - run: *build-api
      - persist_to_workspace:
          root: .
          paths:
            - build-api
            - build

  test_unit:
    <<: *defaults
    docker:
      - image: circleci/node:8
      - image: redis:3.2.7
      - image: rethinkdb:2.3.5
    environment:
      TERM: xterm
    steps:
      - attach_workspace:
          at: ~/spectrum
      - run: yarn run db:migrate
      - run: yarn run db:seed
      - run:
          name: Run Unit Tests
          command: yarn run test:ci

  # Start db and servers, then run e2e and unit tests
  test_integration:
    <<: *defaults
    docker:
      - image: circleci/node:8-browsers
      - image: redis:3.2.7
      - image: cypress/base:6
      - image: rethinkdb:2.3.5
    parameters:
      parallelism:
        type: integer
        default: 1
        description: Number of boxes to use to run this job
    parallelism: <<parameters.parallelism>>
    environment:
      TERM: xterm
    steps:
      - attach_workspace:
          at: ~/spectrum
      - run: yarn run db:migrate
      - run: yarn run db:seed
      - run: *start-api
      - run: *start-web
      # Wait for the API and webserver to start
      - run: ./node_modules/.bin/wait-on http://localhost:3000 http://localhost:3001
      - run:
          name: Install Cypress
          command: yarn run cypress:install
      - run:
          name: Run E2E Tests
          command: |
            if [ $CYPRESS_RECORD_KEY ]; then 
              yarn run test:e2e -- --record --parallel
            else
              yarn run test:e2e
            fi

  # This runs after the above and is only here to hack around missing support for varying jobs based on external vs internal PRs
  # See https://github.com/withspectrum/spectrum/pull/4820
  test_e2e:
    docker:
      - image: cypress/base:10
    steps:
      - run: echo "pass"

  # Run eslint, flow etc.
  test_static_js:
    <<: *js_defaults
    steps:
      - attach_workspace:
          at: ~/spectrum
      - run:
          name: Run Flow
          command: yarn run flow
      - run:
          name: Run ESLint
          command: yarn run lint

workflows:
  test:
    jobs:
      - checkout_environment
      - test_unit:
          requires:
            - checkout_environment
      - test_static_js:
          requires:
            - checkout_environment
      - build_web:
          requires:
            - checkout_environment
      # Run pull requests from internal contributors in parallel
      - test_integration:
          name: test_e2e_internal
          requires:
            - build_web
          parallelism: 8
          filters:
            branches:
              ignore: /pull.*/
      # Run pull requests from external contributors on one machine
      - test_integration:
          name: test_e2e_external
          requires:
            - build_web
          parallelism: 1
          filters:
            branches:
              only: /pull.*/
      # If either of the test_e2e_* jobs pass, this one passes so we can mark it as required on GitHub
      - test_e2e:
          requires:
            - test_e2e_internal
            - test_e2e_external