Adyen Create Checkout Session and Poll Result

arazzo: 1.0.1
info:
  title: Adyen Create Checkout Session and Poll Result
  summary: Create a hosted checkout payment session and poll for its final status.
  description: >-
    The Sessions flow is Adyen's recommended way to accept payments. This
    workflow creates a payment session with the merchant account, amount, and
    reference, then polls the session result endpoint until the session reaches
    a terminal status. 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: checkoutApi
  url: ../openapi/adyen-checkout-api-openapi.yml
  type: openapi
workflows:
- workflowId: create-checkout-session-and-poll
  summary: Create a payment session and poll its status until it completes.
  description: >-
    Creates a Checkout session for the supplied amount and reference, then reads
    the session status with the returned session id so a caller can confirm
    whether the shopper has completed payment.
  inputs:
    type: object
    required:
    - merchantAccount
    - amount
    - reference
    - returnUrl
    - countryCode
    properties:
      merchantAccount:
        type: string
        description: The merchant account identifier that processes the session.
      amount:
        type: object
        description: The amount object with currency and value (minor units).
      reference:
        type: string
        description: Your unique reference for the payment.
      returnUrl:
        type: string
        description: The URL the shopper is returned to after the payment.
      countryCode:
        type: string
        description: The shopper country code (e.g. NL).
  steps:
  - stepId: createSession
    description: >-
      Create a Checkout payment session that the front end uses to render the
      available payment methods and collect the payment.
    operationId: post-sessions
    requestBody:
      contentType: application/json
      payload:
        merchantAccount: $inputs.merchantAccount
        amount: $inputs.amount
        reference: $inputs.reference
        returnUrl: $inputs.returnUrl
        countryCode: $inputs.countryCode
    successCriteria:
    - condition: $statusCode == 201
    outputs:
      sessionId: $response.body#/id
      sessionData: $response.body#/sessionData
  - stepId: pollSessionResult
    description: >-
      Read the status of the payment session using the returned session id to
      determine whether the shopper has completed the payment.
    operationId: get-sessions-sessionId
    parameters:
    - name: sessionId
      in: path
      value: $steps.createSession.outputs.sessionId
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      status: $response.body#/status
  outputs:
    sessionId: $steps.createSession.outputs.sessionId
    status: $steps.pollSessionResult.outputs.status