# Configuration file for https://circleci.com/gh/angular/angular

# Note: YAML anchors allow an object to be re-used, reducing duplication.
# The ampersand declares an alias for an object, then later the `<<: *name`
# syntax dereferences it.
# See http://blog.daemonl.com/2016/02/yaml.html
# To validate changes, use an online parser, eg.
# http://yaml-online-parser.appspot.com/

# Variables

## IMPORTANT
# If you change the `docker_image` version, also change the `cache_key` suffix and the version of
# `com_github_bazelbuild_buildtools` in the `/WORKSPACE` file.
var_1: &docker_image angular/ngcontainer:0.0.8
var_2: &cache_key angular-{{ .Branch }}-{{ checksum "yarn.lock" }}-0.0.8

# Settings common to each job
anchor_1: &job_defaults
  working_directory: ~/ng
  docker:
    - image: *docker_image

# After checkout, rebase on top of master.
# Similar to travis behavior, but not quite the same.
# See https://discuss.circleci.com/t/1662
anchor_2: &post_checkout
  post: git pull --ff-only origin "refs/pull/${CIRCLE_PULL_REQUEST//*pull\//}/merge"

version: 2
jobs:
  lint:
    <<: *job_defaults
    steps:
      - checkout:
          <<: *post_checkout
      # Check BUILD.bazel formatting before we have a node_modules directory
      # Then we don't need any exclude pattern to avoid checking those files
      - run: 'buildifier -mode=check $(find . -type f \( -name BUILD.bazel -or -name BUILD \)) ||
              (echo "BUILD files not formatted. Please run ''yarn buildifier''" ; exit 1)'

      - restore_cache:
          key: *cache_key

      - run: yarn install --frozen-lockfile --non-interactive
      - run: ./node_modules/.bin/gulp lint

  build:
    <<: *job_defaults
    steps:
      - checkout:
          <<: *post_checkout
      - restore_cache:
          key: *cache_key
      
      - run: bazel info release
      - run: bazel run @yarn//:yarn
      # Use bazel query so that we explicitly ask for all buildable targets to be built as well
      # This avoids waiting for a build command to finish before running the first test
      # See https://github.com/bazelbuild/bazel/issues/4257
      - run: bazel query --output=label '//packages/... union @angular//...' | xargs bazel test --config=ci

      - save_cache:
          key: *cache_key
          paths:
            - "node_modules"

workflows:
  version: 2
  default_workflow:
    jobs:
      - lint
      - build