Meta Read User Then Feed

arazzo: 1.0.1
info:
  title: Meta Read User Then Feed
  summary: Read a specific user's profile and then pull their timeline feed.
  description: >-
    Given a known user id, reads the User node to confirm the user exists and
    capture display fields, then retrieves that user's feed edge. The profile
    read acts as an existence and access check before the feed pull. Every step
    inlines its request so the flow can be read and executed without opening the
    underlying OpenAPI description.
  version: 1.0.0
sourceDescriptions:
- name: metaGraphApi
  url: ../openapi/meta-openapi.yml
  type: openapi
workflows:
- workflowId: read-user-then-feed
  summary: Confirm a user exists, then return their feed of posts.
  description: >-
    Reads the User node for the supplied id and, on success, retrieves the feed
    edge for the same user.
  inputs:
    type: object
    required:
    - accessToken
    - userId
    properties:
      accessToken:
        type: string
        description: A Meta Graph API user access token.
      userId:
        type: string
        description: The id of the user to read.
      fields:
        type: string
        description: Comma-separated list of user fields to return.
  steps:
  - stepId: readUser
    description: >-
      Read the User node for the supplied id, returning the requested fields.
    operationId: getUser
    parameters:
    - name: user-id
      in: path
      value: $inputs.userId
    - name: fields
      in: query
      value: $inputs.fields
    - name: access_token
      in: query
      value: $inputs.accessToken
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      userId: $response.body#/id
      name: $response.body#/name
  - stepId: getFeed
    description: >-
      Retrieve the feed of posts for the confirmed user.
    operationId: getUserFeed
    parameters:
    - name: user-id
      in: path
      value: $steps.readUser.outputs.userId
    - name: access_token
      in: query
      value: $inputs.accessToken
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      posts: $response.body#/data
      nextCursor: $response.body#/paging/cursors/after
  outputs:
    userId: $steps.readUser.outputs.userId
    posts: $steps.getFeed.outputs.posts