version: 2.1

orbs:
  win: circleci/windows@2.2.0

references:
  environment: &ENVIRONMENT
    TEST_RESULTS_PATH: &TEST_RESULTS_PATH /tmp/test-results
    WIN_TEST_RESULTS: &WIN_TEST_RESULTS c:\Users\circleci\AppData\Local\Temp\test-results

commands:
  run-gotests:
    parameters:
      cmd:
        type: string
      platform:
        type: string
    steps:
      - run:
          name: "Run go tests"
          command: |
            PACKAGE_NAMES=$(go list ./... | circleci tests split --split-by=timings --timings-type=classname)
            echo "Running $(echo $PACKAGE_NAMES | wc -w) packages"
            echo $PACKAGE_NAMES
            << parameters.cmd >> --format=short-verbose --junitfile $TEST_RESULTS_PATH/go-multierror/gotestsum-report.xml -- -p 2 -cover -coverprofile=<< parameters.platform >>_cov_$CIRCLE_NODE_INDEX.part $PACKAGE_NAMES
        
jobs:
  linux-tests:
    docker:
      - image: docker.mirror.hashicorp.services/circleci/golang:<< parameters.go-version >>
    parameters:
      go-version:
        type: string
    environment: 
      <<: *ENVIRONMENT
    parallelism: 4
    steps:
      - run: go version
      - checkout
      - attach_workspace:
          at: .
      - run: mkdir -p $TEST_RESULTS_PATH/go-multierror

      # Restore go module cache if there is one
      - restore_cache:
          keys:
            - linux-gomod-cache-v1-{{ checksum "go.mod" }}

      - run: go mod download

      # Save go module cache if the go.mod file has changed
      - save_cache:
          key: linux-gomod-cache-v1-{{ checksum "go.mod" }}
          paths:
            - "/go/pkg/mod"

      # Check go fmt output because it does not report non-zero when there are fmt changes
      - run:
          name: check go fmt
          command: |
            files=$(go fmt ./...)
            if [ -n "$files" ]; then
              echo "The following file(s) do not conform to go fmt:"
              echo "$files"
              exit 1
            fi
      # Run go tests with gotestsum
      - run-gotests:
          cmd: "gotestsum"
          platform: "linux"

      # Save coverage report parts
      - persist_to_workspace:
          root: .
          paths:
            - linux_cov_*.part

      - store_test_results:
          path: *TEST_RESULTS_PATH
      - store_artifacts:
          path: *TEST_RESULTS_PATH

  windows-tests:
    executor: 
      name: win/default
      shell: bash --login -eo pipefail
    environment:
      <<: *ENVIRONMENT
    working_directory: c:\gopath\src\github.com\hashicorp\go-multierror
    parameters:
      go-version:
        type: string
      gotestsum-version:
        type: string
    steps: 
      - run: git config --global core.autocrlf false
      - checkout
      - attach_workspace:
          at: .
      - run: 
          name: Setup (remove pre-installed go)
          command: |
            rm -rf "c:\Go"
            mkdir -p $TEST_RESULTS_PATH/go-multierror
      - restore_cache:
          keys:
            - win-golang-<< parameters.go-version >>-cache-v1
            - win-gomod-cache-{{ checksum "go.mod" }}-v1

      - run: 
          name: Install go version << parameters.go-version >>
          command: | 
            if [ ! -d "c:\go" ]; then
              echo "Cache not found, installing new version of go"
              curl --fail --location https://dl.google.com/go/go<< parameters.go-version >>.windows-amd64.zip --output go.zip
              unzip go.zip -d "/c"
            fi
      - run: 
          command: go mod download

      - save_cache:
          key: win-golang-<< parameters.go-version >>-cache-v1
          paths:
            - /go

      - save_cache:
          key: win-gomod-cache-{{ checksum "go.mod" }}-v1
          paths:
            - c:\Windows\system32\config\systemprofile\go\pkg\mod

      - run:
          name: Install gotestsum
          command: |
            curl --fail --location https://github.com/gotestyourself/gotestsum/releases/download/v<< parameters.gotestsum-version >>/gotestsum_<< parameters.gotestsum-version >>_windows_amd64.tar.gz --output gotestsum.tar.gz
            tar -xvzf gotestsum.tar.gz
      - run-gotests:
          cmd: "./gotestsum.exe"
          platform: "win"

      # Save coverage report parts
      - persist_to_workspace:
          root: .
          paths:
            - win_cov_*.part

      - store_test_results:
          path: *WIN_TEST_RESULTS
      - store_artifacts:
          path: *WIN_TEST_RESULTS

workflows:
  go-multierror:
    jobs:
      - linux-tests:
          matrix:
            parameters:
              go-version: ["1.13", "1.14", "1.15"]
          name: linux-test-go-<< matrix.go-version >>
      - windows-tests:
          matrix:
            parameters:
              go-version: ["1.13", "1.14", "1.15"]
              gotestsum-version: ["1.6.2"]
          name: win-test-go-<< matrix.go-version >>