Fetch Placeholder Image

name: fetch-placeholder-image
description: |
  Workflow capability for retrieving a placeholder kitten image of a
  given size (color or grayscale). Wraps placekitten.com. Note that
  the live service currently returns HTTP 521; callers should be
  prepared to fall back to an alternative placeholder provider.
version: 0.1.0
status: deprecated
inputs:
  - name: width
    type: integer
    required: true
    description: Target width in pixels.
  - name: height
    type: integer
    required: true
    description: Target height in pixels.
  - name: grayscale
    type: boolean
    required: false
    default: false
    description: Request the grayscale variant when true.
steps:
  - id: choose-operation
    type: branch
    when: "${inputs.grayscale}"
    then: invoke-grayscale
    else: invoke-color
  - id: invoke-color
    uses: placekitten.getKittenImage
    with:
      width: "${inputs.width}"
      height: "${inputs.height}"
  - id: invoke-grayscale
    uses: placekitten.getGrayscaleKittenImage
    with:
      width: "${inputs.width}"
      height: "${inputs.height}"
fallbacks:
  - reason: origin-down
    suggestion: Use picsum.photos/{width}/{height} or self-hosted placeholder.
output:
  contentType: image/jpeg