aliases:
  - &restore-cache
    keys:
      - dependencies-{{ .Branch }}-{{ checksum "package.json" }}
      # Fallback in case checksum fails
      - dependencies-{{ .Branch }}-

  - &save-cache
    paths:
      - node_modules
    key: dependencies-{{ .Branch }}-{{ checksum "package.json" }}

  - &deploy-website
    command: |
      # Deploy Metro website
      git config --global user.email "metro-bot@users.noreply.github.com"
      git config --global user.name "Website Deployment Script"
      echo "machine github.com login metro-bot password $GITHUB_TOKEN" > ~/.netrc
      # install Docusaurus and generate file of English strings
      cd website && yarn && yarn run write-translations
      # build and publish website
      GIT_USER=metro-bot yarn run publish-gh-pages

version: 2
jobs:
  run-js-checks:
    working_directory: ~/metro
    docker:
      - image: circleci/node:8
    steps:
      - checkout
      - restore-cache: *restore-cache
      - run: yarn --no-progress
      - save-cache: *save-cache
      - run: yarn run test-ci
  test-node-9:
    working_directory: ~/metro
    docker:
      - image: circleci/node:9
    steps:
      - checkout
      - restore-cache: *restore-cache
      - run: yarn --no-progress
      - save-cache: *save-cache
      - run: yarn run jest

  test-node-8:
    working_directory: ~/metro
    docker:
      - image: circleci/node:8
    steps:
      - checkout
      - restore-cache: *restore-cache
      - run: yarn --no-progress
      - save-cache: *save-cache
      - run: yarn run jest

  test-node-6:
    working_directory: ~/metro
    docker:
      - image: circleci/node:6
    steps:
      - checkout
      - restore-cache: *restore-cache
      - run: sudo npm i -g yarn@^1.2.1
      - run: yarn --no-progress
      - save-cache: *save-cache
      - run: yarn run jest

  publish-to-npm:
    working_directory: ~/metro
    docker:
      - image: circleci/node:8
    steps:
      - checkout
      - restore-cache: *restore-cache
      - run:
          working_directory: packages/metro
          command: yarn --no-progress
      - save-cache: *save-cache
      - run:
          command: echo "//registry.npmjs.org/:_authToken=$NPM_TOKEN" >> ~/.npmrc
      - run:
          working_directory: ~/metro
          command: npm run publish
  test-and-deploy-website:
    working_directory: ~/metro
    docker:
      - image: circleci/node:8
    steps:
      - checkout
      - restore-cache: *restore-cache
      - run: |
          cd website
          yarn --no-progress
      - save-cache: *save-cache
      - deploy: *deploy-website

# Workflows enables us to run multiple jobs in parallel
workflows:
  version: 2
  build-and-deploy:
    jobs:
      - run-js-checks
      - test-node-6
      - test-node-8
      - test-node-9
      - test-and-deploy-website
      - publish-to-npm:
          filters:
            branches:
              ignore: /.*/
            tags:
              only: /v[0-9]+(\.[0-9]+)*/