Tink Refund An Executed Payment And Poll The Refund

arazzo: 1.0.1
info:
  title: Tink Refund An Executed Payment And Poll The Refund
  summary: Confirm a payment is executed, initiate a refund, then poll the refund until it reaches a terminal status.
  description: >-
    A post-settlement Tink Payments flow. It fetches a payment to confirm it
    has executed, initiates a full or partial refund against it, and then polls
    the refund by id until it reaches a terminal status (EXECUTED, REJECTED, or
    FAILED). The flow branches so the refund is only attempted when the payment
    is in the EXECUTED state. 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: paymentsApi
  url: ../openapi/tink-payments-api-openapi.yml
  type: openapi
workflows:
- workflowId: refund-payment-and-poll
  summary: Verify a payment is executed, refund it, and poll the refund to a terminal status.
  description: >-
    Fetches the payment, refunds it only when it is EXECUTED, and re-checks the
    refund until it is EXECUTED, REJECTED, or FAILED.
  inputs:
    type: object
    required:
    - accessToken
    - paymentId
    properties:
      accessToken:
        type: string
        description: An access token authorized for payments and refunds.
      paymentId:
        type: string
        description: The id of the payment to refund.
      amount:
        type: string
        description: Optional refund amount as a decimal string; omit for a full refund.
      currency:
        type: string
        description: Optional ISO 4217 currency code for the refund amount.
      remittanceValue:
        type: string
        description: Optional unstructured remittance information for the refund.
  steps:
  - stepId: getPayment
    description: >-
      Fetch the payment and branch on its status: only an EXECUTED payment can
      be refunded.
    operationId: getPayment
    parameters:
    - name: Authorization
      in: header
      value: "Bearer $inputs.accessToken"
    - name: paymentId
      in: path
      value: $inputs.paymentId
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      status: $response.body#/status
    onSuccess:
    - name: refundable
      type: goto
      stepId: refundPayment
      criteria:
      - context: $response.body
        condition: $.status == "EXECUTED"
        type: jsonpath
    - name: notRefundable
      type: end
      criteria:
      - context: $response.body
        condition: $.status != "EXECUTED"
        type: jsonpath
  - stepId: refundPayment
    description: Initiate a full or partial refund against the executed payment.
    operationId: refundPayment
    parameters:
    - name: Authorization
      in: header
      value: "Bearer $inputs.accessToken"
    - name: paymentId
      in: path
      value: $inputs.paymentId
    requestBody:
      contentType: application/json
      payload:
        amount: $inputs.amount
        currency: $inputs.currency
        remittanceInformation:
          type: UNSTRUCTURED
          value: $inputs.remittanceValue
    successCriteria:
    - condition: $statusCode == 201
    outputs:
      refundId: $response.body#/id
      status: $response.body#/status
  - stepId: pollRefund
    description: >-
      Retrieve the refund status. If still pending, loop back and check again;
      otherwise finish.
    operationId: getRefund
    parameters:
    - name: Authorization
      in: header
      value: "Bearer $inputs.accessToken"
    - name: paymentId
      in: path
      value: $inputs.paymentId
    - name: refundId
      in: path
      value: $steps.refundPayment.outputs.refundId
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      status: $response.body#/status
    onSuccess:
    - name: stillPending
      type: goto
      stepId: pollRefund
      criteria:
      - context: $response.body
        condition: $.status == "CREATED"
        type: jsonpath
    - name: settled
      type: end
      criteria:
      - context: $response.body
        condition: $.status == "EXECUTED" || $.status == "REJECTED" || $.status == "FAILED"
        type: jsonpath
  outputs:
    refundId: $steps.refundPayment.outputs.refundId
    finalStatus: $steps.pollRefund.outputs.status