version: 2.1

executors:
  build:
    parameters:
      go-version:
        type: string
    docker:
      - image: circleci/golang:<< parameters.go-version >>
        environment:
          GO111MODULE: "on"
    working_directory: /go/src/github.com/skanehira/tson

commands:
  go_mod_download:
    steps:
      - restore_cache:
          name: Restore go modules cache
          keys:
            - go-modules-{{ checksum "go.sum" }}

      - run: go mod download

      - save_cache:
          name: Save go modules cache
          key: go-modules-{{ checksum "go.sum" }}
          paths:
            - "/go/pkg/mod"

jobs:
  build:
    parameters:
      go-version:
        type: string

    executor:
      name: build
      go-version: << parameters.go-version >>

    steps:
      - checkout

      - go_mod_download

  lint:
    parameters:
      go-version:
        type: string
      golangci-lint-version:
        type: string

    executor:
      name: build
      go-version: << parameters.go-version >>

    steps:
      - checkout

      - go_mod_download

      - run:
          name: Install GolangCI-Lint
          command: curl -sfL https://install.goreleaser.com/github.com/golangci/golangci-lint.sh | sh -s v<< parameters.golangci-lint-version >>

      - run:
          name: Run GolangCI-Lint
          command: ./bin/golangci-lint run --disable-all --enable=goimports --enable=govet

  release:
    parameters:
      go-version:
        type: string

    executor:
      name: build
      go-version: << parameters.go-version >>

    steps:
      - checkout
      - go_mod_download
      - run:
          name: Run goreleaser
          command: curl -sL https://git.io/goreleaser | bash -s -- --rm-dist

workflows:
  stable-build:
    jobs:
      - lint:
          go-version: "1.13.3"
          golangci-lint-version: "1.17.1"
      - build:
          go-version: "1.13.3"
          requires:
            - lint

  latest-build:
    jobs:
      - lint:
          go-version: "1.13.3"
          golangci-lint-version: "1.17.1"
      - build:
          go-version: "1.13.3"
          requires:
            - lint

  release:
    jobs:
      - lint:
          go-version: "1.13.3"
          golangci-lint-version: "1.17.1"
      - release:
          go-version: "1.13.3"
          filters:
            branches:
              ignore: /.*/
            tags:
              only: /[0-9]+(\.[0-9]+)(\.[0-9]+)/