Block Square Customer Order Then Pay

arazzo: 1.0.1
info:
  title: Block Square Customer Order Then Pay
  summary: Create an order, branch on its state, and only take payment when it is OPEN.
  description: >-
    An order-gated payment flow. The workflow opens an order at the location and
    branches on the returned order state: when the order is OPEN it proceeds to
    charge payment, and otherwise it ends without charging. Each step inlines its
    bearer token and request body, including the idempotency keys Square requires
    on the order and payment writes.
  version: 1.0.0
sourceDescriptions:
- name: ordersApi
  url: ../openapi/block-orders-api-openapi.yml
  type: openapi
- name: paymentsApi
  url: ../openapi/block-payments-api-openapi.yml
  type: openapi
workflows:
- workflowId: customer-order-then-pay
  summary: Create an order, then take payment only if the order is OPEN.
  description: >-
    Opens an order at the location with the supplied line items and branches on
    its state, charging the supplied source for the supplied amount only when the
    order is OPEN.
  inputs:
    type: object
    required:
    - accessToken
    - locationId
    - lineItems
    - sourceId
    - amount
    properties:
      accessToken:
        type: string
        description: Square access token presented as a Bearer credential.
      locationId:
        type: string
        description: The seller location the order and payment are associated with.
      lineItems:
        type: array
        description: Order line items, each with a name, quantity, and base_price_money.
        items:
          type: object
      sourceId:
        type: string
        description: The payment source id (card nonce or token) to charge.
      amount:
        type: integer
        description: The amount to charge in the smallest currency denomination.
      currency:
        type: string
        description: The ISO 4217 currency code for the charge.
        default: USD
      orderIdempotencyKey:
        type: string
        description: Idempotency key for the create-order request.
      paymentIdempotencyKey:
        type: string
        description: Idempotency key for the create-payment request.
  steps:
  - stepId: createOrder
    description: Open an order with the supplied line items and branch on its state.
    operationId: create-order
    parameters:
    - name: Authorization
      in: header
      value: Bearer $inputs.accessToken
    requestBody:
      contentType: application/json
      payload:
        idempotency_key: $inputs.orderIdempotencyKey
        order:
          location_id: $inputs.locationId
          line_items: $inputs.lineItems
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      orderId: $response.body#/order/id
      orderState: $response.body#/order/state
    onSuccess:
    - name: orderOpen
      type: goto
      stepId: createPayment
      criteria:
      - context: $response.body
        condition: $.order.state == "OPEN"
        type: jsonpath
    - name: orderNotOpen
      type: end
      criteria:
      - context: $response.body
        condition: $.order.state != "OPEN"
        type: jsonpath
  - stepId: createPayment
    description: Charge the supplied source for the amount at the location.
    operationId: create-payment
    parameters:
    - name: Authorization
      in: header
      value: Bearer $inputs.accessToken
    requestBody:
      contentType: application/json
      payload:
        source_id: $inputs.sourceId
        idempotency_key: $inputs.paymentIdempotencyKey
        amount_money:
          amount: $inputs.amount
          currency: $inputs.currency
        location_id: $inputs.locationId
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      paymentId: $response.body#/payment/id
      paymentStatus: $response.body#/payment/status
  outputs:
    orderId: $steps.createOrder.outputs.orderId
    orderState: $steps.createOrder.outputs.orderState
    paymentId: $steps.createPayment.outputs.paymentId