WooCommerce Upsert Coupon by Code

arazzo: 1.0.1
info:
  title: WooCommerce Upsert Coupon by Code
  summary: Find a coupon by its code and create it only if it does not already exist.
  description: >-
    Keeps promotional codes unique when syncing campaigns. The workflow searches
    existing coupons by code, then branches: when a match is found it reads the
    existing coupon, and when no match is found it creates a new coupon with the
    supplied discount. 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: woocommerceRestApi
  url: ../openapi/woocommerce-rest-api-openapi.yml
  type: openapi
workflows:
- workflowId: upsert-coupon-by-code
  summary: Upsert a coupon keyed on its code, creating it only when missing.
  description: >-
    Searches existing coupons by code and either reads the matched coupon or
    creates a new one when no match exists.
  inputs:
    type: object
    required:
    - code
    - amount
    - discountType
    properties:
      code:
        type: string
        description: Coupon code used to detect an existing coupon.
      amount:
        type: string
        description: Discount amount as a decimal string to use on create.
      discountType:
        type: string
        description: Discount type to use on create (percent, fixed_cart, or fixed_product).
  steps:
  - stepId: findCoupon
    description: >-
      Search existing coupons for one matching the supplied code, returning at
      most one result.
    operationId: listCoupons
    parameters:
    - name: code
      in: query
      value: $inputs.code
    - name: per_page
      in: query
      value: 1
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      matchedCouponId: $response.body#/0/id
    onSuccess:
    - name: couponExists
      type: goto
      stepId: getExisting
      criteria:
      - context: $response.body
        condition: $.length > 0
        type: jsonpath
    - name: couponMissing
      type: goto
      stepId: createNew
      criteria:
      - context: $response.body
        condition: $.length == 0
        type: jsonpath
  - stepId: getExisting
    description: >-
      Read the matched coupon to confirm its current discount settings.
    operationId: getCoupon
    parameters:
    - name: id
      in: path
      value: $steps.findCoupon.outputs.matchedCouponId
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      couponId: $response.body#/id
      couponCode: $response.body#/code
    onSuccess:
    - name: done
      type: end
  - stepId: createNew
    description: >-
      Create a new coupon with the supplied code and discount when no existing
      coupon matched.
    operationId: createCoupon
    requestBody:
      contentType: application/json
      payload:
        code: $inputs.code
        amount: $inputs.amount
        discount_type: $inputs.discountType
    successCriteria:
    - condition: $statusCode == 201
    outputs:
      couponId: $response.body#/id
      couponCode: $response.body#/code
  outputs:
    couponId: $steps.getExisting.outputs.couponId
    createdCouponId: $steps.createNew.outputs.couponId