YouTube Channel Comment Threads and Reply

arazzo: 1.0.1
info:
  title: YouTube Channel Comment Threads and Reply
  summary: Read a channel, list the comment threads on its discussion, and reply to the first thread.
  description: >-
    An engagement flow for channel owners. It reads a channel resource, lists the
    comment threads associated with that channel, captures the top-level comment
    id of the first thread, and posts a reply to it. Every step spells out its
    request inline so the flow can be read and executed without opening the
    underlying OpenAPI description.
  version: 1.0.0
sourceDescriptions:
- name: youtubeDataApi
  url: ../openapi/youtube-data-api-openapi.yml
  type: openapi
workflows:
- workflowId: channel-comment-threads-reply
  summary: Surface channel comment threads and reply to the first one.
  description: >-
    Reads a channel, lists its comment threads, and replies to the first thread's
    top-level comment.
  inputs:
    type: object
    required:
    - apiKey
    - channelId
    - replyText
    properties:
      apiKey:
        type: string
        description: The Google API key used to authorize each YouTube Data API request.
      channelId:
        type: string
        description: The id of the channel whose comment threads should be read.
      replyText:
        type: string
        description: The text of the reply to post under the first thread.
  steps:
  - stepId: getChannel
    description: Read the channel resource to confirm it exists.
    operationId: youtube.channels.list
    parameters:
    - name: part
      in: query
      value: snippet
    - name: id
      in: query
      value: $inputs.channelId
    - name: key
      in: query
      value: $inputs.apiKey
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      channelTitle: $response.body#/items/0/snippet/title
  - stepId: listChannelThreads
    description: List the comment threads associated with the channel and capture the first top-level comment id.
    operationId: youtube.commentThreads.list
    parameters:
    - name: part
      in: query
      value: snippet
    - name: channelId
      in: query
      value: $inputs.channelId
    - name: maxResults
      in: query
      value: 20
    - name: key
      in: query
      value: $inputs.apiKey
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      topCommentId: $response.body#/items/0/snippet/topLevelComment/id
      threadCount: $response.body#/pageInfo/totalResults
    onSuccess:
    - name: hasThreads
      type: goto
      stepId: replyToThread
      criteria:
      - context: $response.body
        condition: $.items.length > 0
        type: jsonpath
  - stepId: replyToThread
    description: Post a reply under the first thread's top-level comment.
    operationId: youtube.comments.insert
    parameters:
    - name: part
      in: query
      value: snippet
    - name: key
      in: query
      value: $inputs.apiKey
    requestBody:
      contentType: application/json
      payload:
        snippet:
          parentId: $steps.listChannelThreads.outputs.topCommentId
          textOriginal: $inputs.replyText
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      replyId: $response.body#/id
  outputs:
    channelTitle: $steps.getChannel.outputs.channelTitle
    threadCount: $steps.listChannelThreads.outputs.threadCount
    replyId: $steps.replyToThread.outputs.replyId