version: 2.1

# More about orbs: https://circleci.com/docs/2.0/using-orbs/
orbs:
  ruby: circleci/ruby@1.1.2

commands:
  prelim-deps:
    steps:
      - run:
          name: Preliminary Dependencies
          command: |
            gem update --system
            gem --version
            gem install bundler
            bundler --version
            bundle config set path './vendor/bundle'

  run-tests:
    steps:
      - run:
          name: Run the Tests
          command: |
            bundle exec rake test

  save-stan-cache:
    parameters:
      gemfile:
        default: "Gemfile"
        type: string
    steps:
      - save_cache:
          key: gem-cache-v1-{{ arch }}-{{ .Branch }}-{{ checksum "<<parameters.gemfile>>" }}
          paths:
            - vendor/bundle

  restore-stan-cache:
    parameters:
      gemfile:
        default: "Gemfile"
        type: string
    steps:
      - restore_cache:
          keys:
            - gem-cache-v1-{{ arch }}-{{ .Branch }}-{{ checksum "<<parameters.gemfile>>" }}
            - gem-cache-v1-{{ arch }}-{{ .Branch }}
            - gem-cache-v1

  bundle-install:
    parameters:
      gemfile:
        default: "Gemfile"
        type: string
    steps:
      - restore-stan-cache:
          gemfile: <<parameters.gemfile>>
      - run:
          name: Bundle Installation
          command: |
            bundle install
      - save-stan-cache:
          gemfile: <<parameters.gemfile>>

jobs:
  ruby26:
    parallelism: 3
    docker:
      - image: circleci/ruby:2.6.3-stretch-node
    executor: ruby/default
    environment:
      BUNDLE_JOBS: "3"
      BUNDLE_RETRY: "3"

    steps:
      - checkout
      - prelim-deps
      - bundle-install
      - run-tests

  rails50:
    parallelism: 3
    docker:
      - image: circleci/ruby:2.6.3-stretch-node
      - image: mariadb
        environment:
          MYSQL_DATABASE: 'travis_ci_test'
          MYSQL_USER: 'root'
          MYSQL_PASSWORD: ''
          MYSQL_ALLOW_EMPTY_PASSWORD: 'yes'
          MYSQL_ROOT_PASSWORD: ''
          MYSQL_ROOT_HOST: '%'
    executor: ruby/default
    environment:
      BUNDLE_JOBS: "3"
      BUNDLE_RETRY: "3"
      BUNDLE_GEMFILE: "./gemfiles/rails50.gemfile"

    steps:
      - checkout
      - prelim-deps
      - bundle-install:
          gemfile: "./gemfiles/rails50.gemfile"
      - run-tests

  rails60:
    parallelism: 3
    docker:
      - image: circleci/ruby:2.6.3-stretch-node
      - image: mariadb
        environment:
          MYSQL_DATABASE: 'travis_ci_test'
          MYSQL_USER: 'root'
          MYSQL_PASSWORD: ''
          MYSQL_ALLOW_EMPTY_PASSWORD: 'yes'
          MYSQL_ROOT_PASSWORD: ''
          MYSQL_ROOT_HOST: '%'
    executor: ruby/default
    environment:
      BUNDLE_JOBS: "3"
      BUNDLE_RETRY: "3"
      BUNDLE_GEMFILE: "./gemfiles/rails60.gemfile"

    steps:
      - checkout
      - prelim-deps
      - bundle-install:
          gemfile: "./gemfiles/rails60.gemfile"
      - run-tests

  libraries:
    parallelism: 3
    docker:
      - image: circleci/ruby:2.6.3-stretch-node
      - image: mariadb
        environment:
          MYSQL_DATABASE: 'travis_ci_test'
          MYSQL_USER: 'root'
          MYSQL_PASSWORD: ''
          MYSQL_ALLOW_EMPTY_PASSWORD: 'yes'
          MYSQL_ROOT_PASSWORD: ''
          MYSQL_ROOT_HOST: '%'
      - image: memcached
      - image: postgres
        environment:
          POSTGRES_USER: 'stan'
          POSTGRES_PASSWORD: 'stanlikesdata'
      - image: redis
    executor: ruby/default
    environment:
      BUNDLE_JOBS: "3"
      BUNDLE_RETRY: "3"
      BUNDLE_GEMFILE: "./gemfiles/libraries.gemfile"

    steps:
      - checkout
      - prelim-deps
      - bundle-install:
          gemfile: "./gemfiles/libraries.gemfile"
      - run-tests

workflows:
  version: 2
  whole-enchilada-MRI26:
    jobs:
      - ruby26
      - rails50
      - rails60
      - libraries