Microsoft Teams Broadcast to Joined Team Channel

arazzo: 1.0.1
info:
  title: Microsoft Teams Broadcast to Joined Team Channel
  summary: Pick one of the current user's joined teams, find a channel, and post to it.
  description: >-
    A self-service broadcast pattern that starts from the signed-in user's own
    teams. The workflow lists the teams the current user has joined, branches on
    whether any teams exist, lists the channels in the chosen team, and posts a
    broadcast message into the chosen channel. 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: teamsApi
  url: ../openapi/microsoft-teams-graph-api.yaml
  type: openapi
workflows:
- workflowId: broadcast-to-joined-team-channel
  summary: From the user's joined teams, resolve a channel and post a broadcast.
  description: >-
    Lists the current user's joined teams, and when at least one exists, lists
    the channels in the supplied team and posts a broadcast message into the
    supplied channel.
  inputs:
    type: object
    required:
    - accessToken
    - teamId
    - channelId
    - broadcastMessage
    properties:
      accessToken:
        type: string
        description: OAuth 2.0 bearer token with Team.ReadBasic.All, Channel.ReadBasic.All, and ChatMessage.Send scopes.
      teamId:
        type: string
        description: The id of one of the user's joined teams to broadcast into.
      channelId:
        type: string
        description: The channel id to post the broadcast message to.
      broadcastMessage:
        type: string
        description: The HTML body of the broadcast message.
  steps:
  - stepId: listJoinedTeams
    description: >-
      List the teams the current user has joined so the caller can confirm the
      target team is reachable.
    operationId: listJoinedTeams
    parameters:
    - name: Authorization
      in: header
      value: "Bearer $inputs.accessToken"
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      joinedTeams: $response.body#/value
    onSuccess:
    - name: teamsFound
      type: goto
      stepId: listChannels
      criteria:
      - context: $response.body
        condition: $.value.length > 0
        type: jsonpath
    - name: noTeams
      type: end
      criteria:
      - context: $response.body
        condition: $.value.length == 0
        type: jsonpath
  - stepId: listChannels
    description: >-
      List the channels in the chosen joined team to confirm the target channel
      exists before posting.
    operationId: listChannels
    parameters:
    - name: Authorization
      in: header
      value: "Bearer $inputs.accessToken"
    - name: team-id
      in: path
      value: $inputs.teamId
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      channels: $response.body#/value
  - stepId: postBroadcast
    description: >-
      Post the broadcast message into the chosen channel.
    operationId: sendChannelMessage
    parameters:
    - name: Authorization
      in: header
      value: "Bearer $inputs.accessToken"
    - name: team-id
      in: path
      value: $inputs.teamId
    - name: channel-id
      in: path
      value: $inputs.channelId
    requestBody:
      contentType: application/json
      payload:
        body:
          contentType: html
          content: $inputs.broadcastMessage
    successCriteria:
    - condition: $statusCode == 201
    outputs:
      messageId: $response.body#/id
  outputs:
    messageId: $steps.postBroadcast.outputs.messageId