Stripe Launch Subscription

arazzo: 1.0.1
info:
  title: Stripe Launch Subscription
  summary: Create a recurring product and price, then subscribe a customer to it.
  description: >-
    The end-to-end pattern for standing up a recurring revenue plan. The workflow
    creates a Product, creates a recurring Price referencing that product with a
    billing interval, then opens a Subscription for the supplied customer against
    the new price. Every step spells out its form-encoded request inline so the
    flow can be read and executed without opening the underlying OpenAPI
    description.
  version: 1.0.0
sourceDescriptions:
- name: productsApi
  url: ../openapi/stripe-products-api-openapi.yml
  type: openapi
- name: pricesApi
  url: ../openapi/stripe-prices-api-openapi.yml
  type: openapi
- name: subscriptionApi
  url: ../openapi/stripe-subscription-api-openapi.yml
  type: openapi
workflows:
- workflowId: launch-subscription
  summary: Create a plan (product plus recurring price) and subscribe a customer.
  description: >-
    Creates a Product, creates a recurring Price with the supplied interval and
    amount, then subscribes the given customer to that price via a Subscription.
  inputs:
    type: object
    required:
    - name
    - currency
    - unitAmount
    - interval
    - customer
    properties:
      name:
        type: string
        description: Display name of the subscription product.
      currency:
        type: string
        description: Three-letter ISO currency code.
      unitAmount:
        type: integer
        description: Recurring amount per interval in the smallest currency unit.
      interval:
        type: string
        description: Billing interval (day, week, month, or year).
      customer:
        type: string
        description: ID of the customer to subscribe.
  steps:
  - stepId: createProduct
    description: Create the Product the recurring plan is built on.
    operationId: PostProducts
    requestBody:
      contentType: application/x-www-form-urlencoded
      payload:
        name: $inputs.name
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      productId: $response.body#/id
  - stepId: createRecurringPrice
    description: Create a recurring Price for the product with the requested interval.
    operationId: postPrices
    requestBody:
      contentType: application/x-www-form-urlencoded
      payload:
        product: $steps.createProduct.outputs.productId
        currency: $inputs.currency
        unit_amount: $inputs.unitAmount
        recurring:
          interval: $inputs.interval
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      priceId: $response.body#/id
  - stepId: createSubscription
    description: Subscribe the customer to the newly created recurring price.
    operationId: PostSubscriptions
    requestBody:
      contentType: application/x-www-form-urlencoded
      payload:
        customer: $inputs.customer
        items:
        - price: $steps.createRecurringPrice.outputs.priceId
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      subscriptionId: $response.body#/id
      status: $response.body#/status
  outputs:
    productId: $steps.createProduct.outputs.productId
    priceId: $steps.createRecurringPrice.outputs.priceId
    subscriptionId: $steps.createSubscription.outputs.subscriptionId
    status: $steps.createSubscription.outputs.status