WhatsApp Verify and Register Phone Number

arazzo: 1.0.1
info:
  title: WhatsApp Verify and Register Phone Number
  summary: Request a verification code, verify it, then register the phone number.
  description: >-
    The full onboarding flow that brings a phone number live on the WhatsApp
    Cloud API. The workflow requests a verification code over SMS or voice, has
    the caller supply the received code to verify the number, and then registers
    the verified number with its two-step verification PIN so it can send and
    receive messages. 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: registrationApi
  url: ../openapi/whatsapp-registration-api-openapi.yml
  type: openapi
workflows:
- workflowId: register-phone-number
  summary: Drive a phone number from code request through verification to registration.
  description: >-
    Requests a verification code for the phone number, verifies the number with
    the supplied code, and registers the number for Cloud API use with its PIN.
  inputs:
    type: object
    required:
    - accessToken
    - phoneNumberId
    - codeMethod
    - language
    - code
    - pin
    properties:
      accessToken:
        type: string
        description: Access token with whatsapp_business_management permission.
      phoneNumberId:
        type: string
        description: The WhatsApp phone number ID being registered.
      codeMethod:
        type: string
        description: Delivery method for the verification code (SMS or VOICE).
      language:
        type: string
        description: Two-letter language code for the verification message.
      code:
        type: string
        description: The 6-digit verification code received via SMS or voice.
      pin:
        type: string
        description: 6-digit two-step verification PIN to set during registration.
  steps:
  - stepId: requestCode
    description: >-
      Request a verification code be sent to the phone number over the chosen
      delivery method.
    operationId: requestVerificationCode
    parameters:
    - name: Authorization
      in: header
      value: Bearer $inputs.accessToken
    - name: phone-number-id
      in: path
      value: $inputs.phoneNumberId
    requestBody:
      contentType: application/json
      payload:
        code_method: $inputs.codeMethod
        language: $inputs.language
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      requested: $response.body#/success
  - stepId: verifyNumber
    description: >-
      Verify the phone number using the code the caller received via SMS or
      voice.
    operationId: verifyCode
    parameters:
    - name: Authorization
      in: header
      value: Bearer $inputs.accessToken
    - name: phone-number-id
      in: path
      value: $inputs.phoneNumberId
    requestBody:
      contentType: application/json
      payload:
        code: $inputs.code
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      verified: $response.body#/success
  - stepId: registerNumber
    description: >-
      Register the verified phone number for Cloud API use, setting its two-step
      verification PIN.
    operationId: registerPhoneNumber
    parameters:
    - name: Authorization
      in: header
      value: Bearer $inputs.accessToken
    - name: phone-number-id
      in: path
      value: $inputs.phoneNumberId
    requestBody:
      contentType: application/json
      payload:
        messaging_product: whatsapp
        pin: $inputs.pin
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      registered: $response.body#/success
  outputs:
    verified: $steps.verifyNumber.outputs.verified
    registered: $steps.registerNumber.outputs.registered