name: stdin_uppercase
type: input
status: experimental
categories: [ Pointless ]
summary: Reads messages from stdin but uppercases everything for some reason.

mapping: |
  root.stdin = {}
  root.processors = []
  root.processors."-".bloblang = """
    root = content().uppercase().string()
  """.trim()

metrics_mapping: |
  map decrement_processor {
    let start_index = this.index_of("processor")
    let prefix = this.slice(0, $start_index)
    let suffix = this.slice($start_index)

    let index = $suffix.split(".").1.number().floor()

    root = $prefix + if $index == 0 {
      $suffix.replace_all("processor.0.", "mapping.")
    } else {
      $suffix.re_replace_all("processor\\.[0-9]+\\.", "processor.%v.".format($index - 1))
    }
  }

  root = if this.contains("processor") {
    this.apply("decrement_processor")
  }

tests:
  - name: no fields
    config: {}
    expected:
      stdin: {}
      processors:
        - bloblang: "root = content().uppercase().string()"