version: '3'

vars:
  GLOBAL_VAR: [1, 2, 2, 2, 3, 3, 4, 5]

tasks:
  default:
    - task: ref-cmd
    - task: ref-dep
    - task: ref-resolver
    - task: ref-resolver-sh

  ref-cmd:
    vars:
      VAR_REF:
        ref: .GLOBAL_VAR
    cmds:
      - task: print-first
        vars:
          VAR:
            ref: .VAR_REF

  ref-dep:
    vars:
      VAR_REF:
        ref: .GLOBAL_VAR
    deps:
      - task: print-first
        vars:
          VAR:
            ref: .VAR_REF

  ref-resolver:
    vars:
      VAR_REF:
        ref: .GLOBAL_VAR
    cmds:
      - task: print-var
        vars:
          VAR:
            ref: (index .VAR_REF 0)

  ref-resolver-sh:
    vars:
      JSON_STRING:
        sh: echo '{"name":"Alice","age":30,"children":[{"name":"Bob","age":5},{"name":"Charlie","age":3},{"name":"Diane","age":1}]}'
      JSON:
        ref: "fromJson .JSON_STRING"
      VAR_REF:
        ref: .JSON
    cmds:
      - task: print-story
        vars:
          VAR:
            ref: .VAR_REF

  print-var:
    cmds:
      - echo "{{.VAR}}"

  print-first:
    cmds:
      - echo "{{index .VAR 0}}"

  print-story:
    cmds:
      - >-
        echo "{{.VAR.name}} has {{len .VAR.children}} children called
        {{- $children := .VAR.children -}}
        {{- range $i, $child := $children -}}
          {{- if lt $i (sub (len $children) 1)}} {{$child.name -}},
          {{- else}} and {{$child.name -}}
          {{- end -}}
        {{- end -}}"