Stripe Onboard Customer to Plan

arazzo: 1.0.1
info:
  title: Stripe Onboard Customer to Plan
  summary: Create a customer, save a payment method to them, then subscribe them to a plan.
  description: >-
    The full new-subscriber onboarding pattern. The workflow creates a Customer,
    attaches a PaymentMethod to that customer as the default, then subscribes the
    customer to an existing recurring 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: customersApi
  url: ../openapi/stripe-customers-api-openapi.yml
  type: openapi
- name: paymentMethodApi
  url: ../openapi/stripe-payment-method-api-openapi.yml
  type: openapi
- name: subscriptionApi
  url: ../openapi/stripe-subscription-api-openapi.yml
  type: openapi
workflows:
- workflowId: onboard-customer-to-plan
  summary: Create a customer, attach a payment method, and subscribe them.
  description: >-
    Creates a Customer, attaches the supplied PaymentMethod to that customer,
    then subscribes the customer to the supplied recurring price using that
    method as the default.
  inputs:
    type: object
    required:
    - email
    - paymentMethod
    - price
    properties:
      email:
        type: string
        description: Email address for the new customer.
      paymentMethod:
        type: string
        description: ID of the PaymentMethod to attach and bill.
      price:
        type: string
        description: ID of the recurring price to subscribe the customer to.
  steps:
  - stepId: createCustomer
    description: Create the Customer that will own the subscription.
    operationId: postCustomers
    requestBody:
      contentType: application/x-www-form-urlencoded
      payload:
        email: $inputs.email
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      customerId: $response.body#/id
  - stepId: attachPaymentMethod
    description: Attach the payment method to the new customer.
    operationId: postPaymentMethodsPaymentMethodAttach
    parameters:
    - name: payment_method
      in: path
      value: $inputs.paymentMethod
    requestBody:
      contentType: application/x-www-form-urlencoded
      payload:
        customer: $steps.createCustomer.outputs.customerId
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      paymentMethodId: $response.body#/id
  - stepId: createSubscription
    description: Subscribe the customer to the recurring price using the attached method.
    operationId: PostSubscriptions
    requestBody:
      contentType: application/x-www-form-urlencoded
      payload:
        customer: $steps.createCustomer.outputs.customerId
        default_payment_method: $steps.attachPaymentMethod.outputs.paymentMethodId
        items:
        - price: $inputs.price
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      subscriptionId: $response.body#/id
      status: $response.body#/status
  outputs:
    customerId: $steps.createCustomer.outputs.customerId
    subscriptionId: $steps.createSubscription.outputs.subscriptionId
    status: $steps.createSubscription.outputs.status