# Golang CircleCI 2.0 configuration file
version: 2.1

parameters:
  go-version:
    type: string
    default: "1.15.5"
  workspace-dir:
    type: string
    default: "/home/circleci"

commands:
  setup:
    description: "install go, checkout and restore cache"
    steps:
      - run:
          name: "install go"
          command: |
            curl --create-dirs -o $GOPATH/go.tar.gz https://dl.google.com/go/go${GOVERSION}.linux-amd64.tar.gz
            tar --strip-components=1 -C $GOPATH -xzf $GOPATH/go.tar.gz
            rm -rf $GOPATH/go.tar.gz
      - checkout
      - restore_cache:
          keys:
            - 'v2-pkg-cache-{{ checksum "go.sum" }}-{{ .Environment.GOVERSION }}'
            - 'bin-cache-{{ .Branch }}'
  setup-macos:
    description: "install go, checkout and restore cache"
    steps:
      - run:
          name: "install go on macOS"
          command: |
            brew --version
            [ ! -d /usr/local/opt/go@1.14 ] && brew update && brew install go@1.14 && echo "done installing go"
            echo 'export GOPATH="$HOME/go"' >> $BASH_ENV
            echo 'export PATH="/usr/local/opt/go@1.14/bin:$GOPATH/bin:$PATH"' >> $BASH_ENV
            source $BASH_ENV
            go version
      - checkout

executors:
  linux:
    machine:
      image: ubuntu-1604:201903-01
    working_directory: << pipeline.parameters.workspace-dir >>/project
    environment:
      GOPATH: << pipeline.parameters.workspace-dir >>/go/<< pipeline.parameters.go-version >>
      PATH: << pipeline.parameters.workspace-dir >>/go/<< pipeline.parameters.go-version >>/bin:<< pipeline.parameters.workspace-dir >>/bin:/usr/local/bin:/usr/bin:/bin
      GOVERSION: << pipeline.parameters.go-version >>

jobs:
  build:
    executor: linux
    steps:
      - checkout
      - setup
      - run: make