Paystack Create Customer and Charge Authorization

arazzo: 1.0.1
info:
  title: Paystack Create Customer and Charge Authorization
  summary: Create a customer, initialize a first transaction, verify it to obtain an authorization, then charge that authorization for a recurring debit.
  description: >-
    Models the recurring-card-charge pattern. A customer profile is created, a
    first transaction is initialized and verified to obtain a reusable
    authorization code, and that authorization is then charged for a subsequent
    debit without the customer re-entering card details. 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: customerApi
  url: ../openapi/paystack-customer-api-openapi.yml
  type: openapi
- name: transactionApi
  url: ../openapi/paystack-transaction-api-openapi.yml
  type: openapi
workflows:
- workflowId: create-customer-and-charge-authorization
  summary: Onboard a customer, capture an authorization, then charge it again.
  description: >-
    Creates the customer, initializes and verifies an initial transaction to
    obtain an authorization code, then reuses that authorization for a follow-up
    charge.
  inputs:
    type: object
    required:
    - email
    - firstCharge
    - secondCharge
    properties:
      email:
        type: string
        description: Customer's email address.
      first_name:
        type: string
        description: Customer's first name.
      last_name:
        type: string
        description: Customer's last name.
      firstCharge:
        type: integer
        description: Amount for the initial transaction, in the smallest currency unit.
      secondCharge:
        type: integer
        description: Amount for the subsequent authorization charge, in the smallest currency unit.
  steps:
  - stepId: createCustomer
    description: Create the customer profile that will own the captured authorization.
    operationId: customer_create
    requestBody:
      contentType: application/json
      payload:
        email: $inputs.email
        first_name: $inputs.first_name
        last_name: $inputs.last_name
    successCriteria:
    - condition: $statusCode == 201
    outputs:
      customerCode: $response.body#/data/customer_code
  - stepId: initializeFirstTransaction
    description: Initialize the customer's first transaction to collect a card payment.
    operationId: transaction_initialize
    requestBody:
      contentType: application/json
      payload:
        email: $inputs.email
        amount: $inputs.firstCharge
    successCriteria:
    - condition: $statusCode == 201
    outputs:
      reference: $response.body#/data/reference
  - stepId: verifyFirstTransaction
    description: Verify the first transaction to retrieve the reusable authorization code.
    operationId: transaction_verify
    parameters:
    - name: reference
      in: path
      value: $steps.initializeFirstTransaction.outputs.reference
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      authorizationCode: $response.body#/data/authorization/authorization_code
      status: $response.body#/data/status
  - stepId: chargeAuthorization
    description: >-
      Charge the captured authorization for the subsequent amount without the
      customer re-entering their card details.
    operationId: transaction_chargeAuthorization
    requestBody:
      contentType: application/json
      payload:
        email: $inputs.email
        amount: $inputs.secondCharge
        authorization_code: $steps.verifyFirstTransaction.outputs.authorizationCode
    successCriteria:
    - condition: $statusCode == 201
    outputs:
      reference: $response.body#/data/reference
      chargeStatus: $response.body#/data/status
  outputs:
    customerCode: $steps.createCustomer.outputs.customerCode
    authorizationCode: $steps.verifyFirstTransaction.outputs.authorizationCode
    chargeReference: $steps.chargeAuthorization.outputs.reference
    chargeStatus: $steps.chargeAuthorization.outputs.chargeStatus