version: 2.1
executors:
  golang:
    docker:
      - image: circleci/golang:1.13

commands:
  make:
    parameters:
      description:
        type: string
      target:
        type: string
    steps:
      - attach_workspace:
          at: /tmp/workspace
      - restore_cache:
          name: "Restore source code cache"
          keys:
            - go-src-v1-{{ .Revision }}
      - checkout
      - restore_cache:
          name: "Restore go modules cache"
          keys:
            - go-mod-v2-{{ checksum "go.sum" }}
      - run:
          name: << parameters.description >>
          command: |
            make << parameters.target >>
          no_output_timeout: 60m

jobs:
  setup-dependencies:
    executor: golang
    steps:
      - checkout
      - restore_cache:
          name: "Restore go modules cache"
          keys:
            - go-mod-v2-{{ checksum "go.sum" }}
      - run:
          name: Cache go modules
          command: make go-mod-cache
      - run:
          name: Build
          command: make build
      - run:
          name: Git garbage collection
          command: git gc
      - save_cache:
          name: "Save go modules cache"
          key: go-mod-v2-{{ checksum "go.sum" }}
          paths:
            - "/go/pkg/mod"
      - save_cache:
          name: "Save source code cache"
          key: go-src-v1-{{ .Revision }}
          paths:
            - ".git"
  test-cover:
    executor: golang
    parallelism: 4
    steps:
      - checkout
      - restore_cache:
          keys:
            - go-mod-v2-{{ checksum "go.sum" }}
      - run:
          name: Run tests
          no_output_timeout: 30m
          command: |
            export VERSION="$(git describe --tags --long | sed 's/v\(.*\)/\1/')"
            export GO111MODULE=on
            mkdir -p /tmp/logs /tmp/workspace/profiles
            for pkg in $(go list ./... | grep -v 'simulation\|migrate\|contrib' | circleci tests split); do
              id=$(echo "$pkg" | sed 's|[/.]|_|g')
              go test -mod=readonly -timeout 20m -race -coverprofile=/tmp/workspace/profiles/$id.out -covermode=atomic -tags='ledger test_ledger_mock' "$pkg" | tee "/tmp/logs/$id-$RANDOM.log"
            done
      - persist_to_workspace:
          root: /tmp/workspace
          paths:
            - "profiles/*"
      - store_artifacts:
          path: /tmp/logs

  test-all:
    executor: golang
    steps:
      - make:
          target: test-all
          description: "Run all tests and simulations"

  start-remote-sims:
    executor: golang
    steps:
      - make:
          target: start-remote-sims
          description: "Test multi-seed simulation (long)"

  docker-build-and-push:
    # adapted from: https://circleci.com/blog/using-circleci-workflows-to-replicate-docker-hub-automated-builds/
    environment:
      IMAGE_NAME: kava/kava
    docker:
      - image: circleci/buildpack-deps:stretch
    steps:
      - checkout
      - setup_remote_docker
      - run:
          name: Build Docker image
          command: docker build -t $IMAGE_NAME:$CIRCLE_BRANCH .
      - run:
          name: Publish Docker Image to Docker Hub
          command: |
            echo "$DOCKERHUB_KEY" | docker login -u "$DOCKERHUB_USERNAME" --password-stdin
            docker push $IMAGE_NAME:$CIRCLE_BRANCH


workflows:
  version: 2
  test-suite:
    jobs:
      - setup-dependencies:
          # This filter enables the job for tags
          filters:
            tags:
              only:
                - /^v.*/
      - test-cover:
          requires:
            - setup-dependencies
      - test-all:
          requires:
            - setup-dependencies
          # These filters ensure that the long sim only runs during release
          filters:
            branches:
              only: "master"
  upload-docker-images:
    jobs:
      - docker-build-and-push:
          filters:
            branches:
              only: master