version: 2

references:
  images:
    go: &GOLANG_IMAGE golang:1.12.4-stretch  # Pin Go to patch version (ex: 1.2.3)
    node: &NODE_IMAGE node:10-stretch  # Pin Node.js to major version (ex: 10)

  environment: &ENVIRONMENT
    CIRCLECI_CLI_VERSION: 0.1.5546  # Pin CircleCI CLI to patch version (ex: 1.2.3)
    GO_VERSION: 1.12.4  # Pin Go to patch version (ex: 1.2.3)
    GOTESTSUM_VERSION: 0.3.3  # Pin gotestsum to patch version (ex: 1.2.3)

  cache:
    go-sum: &GO_SUM_CACHE_KEY go-sum-v1-{{ checksum "go.sum" }}
    yarn-lock: &YARN_LOCK_CACHE_KEY yarn-lock-v1-{{ checksum "ui/yarn.lock" }}

jobs:
  install-ui-dependencies:
    docker:
      - image: *NODE_IMAGE
    working_directory: /src
    steps:
      - checkout
      - restore_cache:
          key: *YARN_LOCK_CACHE_KEY
      - run:
          name: Install UI dependencies
          command: |
            set -eux -o pipefail

            cd ui
            yarn install --ignore-optional
            npm rebuild node-sass
      - save_cache:
          key: *YARN_LOCK_CACHE_KEY
          paths:
            - ui/node_modules

  go-mod-download:
    docker:
      - image: *GOLANG_IMAGE
    working_directory: /src
    steps:
      - checkout
      - restore_cache:
          key: *GO_SUM_CACHE_KEY
      - run:
          name: Download Go modules
          command: go mod download
      - run:
          name: Verify checksums of Go modules
          command: go mod verify
      - save_cache:
          key: *GO_SUM_CACHE_KEY
          paths:
            - /go/pkg/mod

  build-go-dev:
    docker:
      - image: *GOLANG_IMAGE
    working_directory: /src
    steps:
      - checkout
      - restore_cache:
          key: *GO_SUM_CACHE_KEY
      - run:
          name: Build dev binary
          command: |
            set -eux -o pipefail

            # Move dev UI assets to expected location
            rm -rf ./pkg
            mkdir ./pkg

            # Build dev binary
            make bootstrap dev
      - persist_to_workspace:
          root: .
          paths:
            - bin

  test-ui:
    docker:
      - image: *NODE_IMAGE
    working_directory: /src
    resource_class: medium+
    steps:
      - checkout
      - restore_cache:
          key: *YARN_LOCK_CACHE_KEY
      - attach_workspace:
          at: .
      - run:
          name: Test UI
          command: |
            set -eux -o pipefail

            # Install Chrome
            wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub \
              | apt-key add -
            echo "deb http://dl.google.com/linux/chrome/deb/ stable main" \
              | tee /etc/apt/sources.list.d/google-chrome.list
            apt-get update
            apt-get -y install google-chrome-stable
            rm /etc/apt/sources.list.d/google-chrome.list
            rm -rf /var/lib/apt/lists/* /var/cache/apt/*

            # Add ./bin to the PATH so vault binary can be run by Ember tests
            export PATH="${PWD}"/bin:${PATH}

            # Run Ember tests
            cd ui
            mkdir -p test-results/qunit
            yarn run test-oss
      - store_artifacts:
          path: ui/test-results
      - store_test_results:
          path: ui/test-results

  test-go:
    machine: true
    environment:
      <<: *ENVIRONMENT
      GO_TAGS:
    parallelism: 2
    working_directory: ~/src
    no_output_timeout: 20m
    steps:
      - checkout
      - run:
          name: Allow circleci user to restore Go modules cache
          command: |
            set -eux -o pipefail

            sudo mkdir /go
            sudo chown -R circleci:circleci /go
      - restore_cache:
          key: *GO_SUM_CACHE_KEY
      - run:
          name: Run Go tests
          command: |
            set -eux -o pipefail

            # Install Go
            curl -sSLO "https://dl.google.com/go/go${GO_VERSION}.linux-amd64.tar.gz"
            sudo rm -rf /usr/local/go
            sudo tar -C /usr/local -xzf "go${GO_VERSION}.linux-amd64.tar.gz"
            rm -f "go${GO_VERSION}.linux-amd64.tar.gz"
            export GOPATH=/go
            export PATH="${PATH}:${GOPATH}/bin:/usr/local/go/bin"

            # Install CircleCI CLI
            curl -sSL \
                "https://github.com/CircleCI-Public/circleci-cli/releases/download/v${CIRCLECI_CLI_VERSION}/circleci-cli_${CIRCLECI_CLI_VERSION}_linux_amd64.tar.gz" \
              | sudo tar --overwrite -xz \
                -C /usr/local/bin \
                "circleci-cli_${CIRCLECI_CLI_VERSION}_linux_amd64/circleci"

            # Split Go tests by prior test times
            package_names=$(go list \
                -tags "${GO_TAGS}" \
                ./... \
              | grep -v /vendor/ \
              | sort \
              | circleci tests split --split-by=timings --timings-type=classname)

            # Install gotestsum
            curl -sSL "https://github.com/gotestyourself/gotestsum/releases/download/v${GOTESTSUM_VERSION}/gotestsum_${GOTESTSUM_VERSION}_linux_amd64.tar.gz" \
              | sudo tar --overwrite -xz -C /usr/local/bin gotestsum

            # Run tests
            make prep
            mkdir -p test-results/go-test
            CGO_ENABLED= \
              VAULT_ADDR= \
              VAULT_TOKEN= \
              VAULT_DEV_ROOT_TOKEN_ID= \
              VAULT_ACC= \
              gotestsum --format=short-verbose --junitfile test-results/go-test/results.xml -- \
                -tags "${GO_TAGS}" \
                -timeout=40m \
                -parallel=20 \
                ${package_names}
      - store_artifacts:
          path: test-results
      - store_test_results:
          path: test-results

workflows:
  version: 2

  ci:
    jobs:
      - install-ui-dependencies
      - go-mod-download
      - build-go-dev:
          requires:
            - go-mod-download
      - test-ui:
          requires:
            - install-ui-dependencies
            - build-go-dev
      - test-go:
          requires:
            - build-go-dev