version: 2
jobs:
  build:
    working_directory: ~/mern-starter
    docker:
      - image: circleci/node:8.4.0
    steps:
      - checkout
      # - run:
      #     name: update-npm
      #     command: 'sudo npm install -g npm@latest'
      - restore_cache:
          key: dependency-cache-{{ checksum "package.json" }}
      - run:
          name: install-npm
          command: yarn
      - save_cache:
          key: dependency-cache-{{ checksum "package.json" }}
          paths:
            - ./node_modules
      - run:
          name: build-docs
          command: |
            pushd docs &&
            ../node_modules/.bin/gitbook install &&
            ../node_modules/.bin/gitbook build &&
            popd &&
            git checkout gh-pages &&
            git pull origin gh-pages --rebase &&
            cp -R docs/_book/* . &&
            git clean -fx node_modules &&
            git clean -fx docs &&
            git add . &&
            git commit -a -m "Update docs" &&
            git push origin gh-pages