Slack Look Up a User and Invite Them to a Channel

arazzo: 1.0.1
info:
  title: Slack Look Up a User and Invite Them to a Channel
  summary: Resolve a user by email, invite them to a channel, and welcome them.
  description: >-
    A membership pattern that adds a person to a channel starting from their
    email address. The workflow resolves the email to a Slack user ID, invites
    that user into the target channel, and posts a welcome message mentioning
    the new member. 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: usersApi
  url: ../openapi/slack-users-openapi.yml
  type: openapi
- name: conversationsApi
  url: ../openapi/slack-conversations-openapi.yml
  type: openapi
- name: chatApi
  url: ../openapi/slack-chat-openapi.yml
  type: openapi
workflows:
- workflowId: lookup-invite-to-channel
  summary: Resolve an email to a user, invite to a channel, and welcome them.
  description: >-
    Looks up a Slack user by email, invites that user into a channel, and posts
    a welcome message into the channel.
  inputs:
    type: object
    required:
    - email
    - channel
    - welcomeText
    properties:
      email:
        type: string
        description: The email address of the user to invite.
      channel:
        type: string
        description: The channel ID to invite the user into.
      welcomeText:
        type: string
        description: The welcome message to post once the user is invited.
  steps:
  - stepId: lookupUser
    description: >-
      Resolve the supplied email address to a Slack user ID.
    operationId: getUsersLookupbyemail
    parameters:
    - name: email
      in: query
      value: $inputs.email
    successCriteria:
    - condition: $statusCode == 200
    - context: $response.body
      condition: $.ok == true
      type: jsonpath
    outputs:
      userId: $response.body#/user/id
  - stepId: inviteUser
    description: >-
      Invite the resolved user into the target channel.
    operationId: postConversationsInvite
    requestBody:
      contentType: application/x-www-form-urlencoded
      payload:
        channel: $inputs.channel
        users: $steps.lookupUser.outputs.userId
    successCriteria:
    - condition: $statusCode == 200
    - context: $response.body
      condition: $.ok == true
      type: jsonpath
    outputs:
      channelId: $response.body#/channel/id
  - stepId: welcomeUser
    description: >-
      Post a welcome message into the channel for the newly invited member.
    operationId: postChatPostmessage
    requestBody:
      contentType: application/x-www-form-urlencoded
      payload:
        channel: $inputs.channel
        text: $inputs.welcomeText
    successCriteria:
    - condition: $statusCode == 200
    - context: $response.body
      condition: $.ok == true
      type: jsonpath
    outputs:
      messageTs: $response.body#/ts
  outputs:
    userId: $steps.lookupUser.outputs.userId
    channelId: $steps.inviteUser.outputs.channelId
    messageTs: $steps.welcomeUser.outputs.messageTs