version: '3'

vars:
  GOOS:
    sh: go env GOOS
  GOARCH:
    sh: go env GOARCH

env:
  DESTDIR: /usr/local/sbin

tasks:

  default:
    cmds:
      - task: build-all

  setup:
    desc: setup directories
    internal: true 
    cmds:
      - mkdir -p bin
    status:
      - test -d bin

  build-*:
    desc: build a specific native binary
    cmds:
      - task: x-build-{{.BINARY}}
      - cp bin/{{.BINARY}}_{{.GOOS}}_{{.GOARCH}} bin/{{.BINARY}}
    vars:
      BINARY: '{{index .MATCH 0}}'
    sources:
      - '**/*.go'
    generates:
      - bin/{{.BINARY}}

  build-all:
    desc: build all native binaries
    cmds:
      - for: { var: BINARIES }
        task: build-{{.ITEM}}
        vars:
          BINARY: '{{.ITEM}}'
    vars: 
      BINARIES:
        sh: ls cmd/

  clean:
    desc: clean up
    cmd: rm -rf bin/*

  install-*:
    desc: install a binary
    cmd: |
      sudo install -m 0755 bin/{{.BINARY}} {{.DESTDIR}}/{{.BINARY}}
    vars:
      BINARY: '{{index .MATCH 0}}'

  install-all:
    desc: install all binaries
    cmds:
      - for: { var: BINARIES }
        task: install-{{.ITEM}}
    vars: 
      BINARIES:
        sh: ls cmd/

  matrix-build-all:
    desc: build all binaries for multiple os & architectures
    cmds:
      - for: { var: BINARIES }
        task: matrix-build-{{.ITEM}}
        vars:
          BINARY: '{{.ITEM}}'
    vars: 
      BINARIES:
        sh: ls cmd/

  matrix-build-*:
    desc: build a specific binary for multiple os & architectures
    cmds:
      - for:
          matrix:
            GOOS: [linux, darwin]
            GOARCH: [amd64, arm64]
        task: x-build-{{.BINARY}}
        vars:
          GOOS: '{{.ITEM.GOOS}}'
          GOARCH: '{{.ITEM.GOARCH}}'
      - task: x-build-{{.BINARY}}
        vars:
          GOOS: windows
          GOARCH: amd64
    vars:
      BINARY: '{{index .MATCH 0}}'

  x-build-*:
    desc: build a binary for the OS / Arch specified by $GOOS and $GOARCH
    cmd: |
      GOOS={{.GOOS}} GOARCH={{.GOARCH}} go build -o bin/{{.BINARY}}_{{.GOOS}}_{{.GOARCH}} ./cmd/{{.BINARY}}
    vars:
      BINARY: '{{index .MATCH 0}}'
    sources:
      - '**/*.go'
    generates:
      - bin/{{.BINARY}}_{{.GOOS}}_{{.GOARCH}}
    deps:
      - setup

  update-deps:
    desc: update go dependencies
    cmds:
      - go get -u ./...
      - go mod tidy