Salla Order Fulfillment

arazzo: 1.0.1
info:
  title: Salla Order Fulfillment
  summary: Read an order, create its shipment, and advance the order status.
  description: >-
    The core fulfillment flow for a Salla merchant. The order is read in full,
    its line items are listed to confirm what is being shipped, a shipment is
    created against the order with a courier and tracking number, and finally
    the order status is advanced to reflect that it has shipped. Each 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: merchantApi
  url: ../openapi/salla-merchant-api-openapi.yml
  type: openapi
workflows:
- workflowId: fulfill-order
  summary: Create a shipment for an order and advance its status.
  description: >-
    Reads an order and its items, creates a shipment against it, and updates
    the order status to reflect that fulfillment has started.
  inputs:
    type: object
    required:
    - orderId
    - shipmentPayload
    - statusSlug
    properties:
      orderId:
        type: integer
        description: The order to fulfill.
      shipmentPayload:
        type: object
        description: The shipment body (courier, tracking, packages) to create against the order.
      statusSlug:
        type: string
        description: The order status slug to advance to (e.g. "in_progress", "shipped").
      statusNote:
        type: string
        description: Optional note recorded with the status change.
  steps:
  - stepId: getOrder
    description: >-
      Read the order in full to confirm it exists and is in a fulfillable
      state.
    operationId: getOrder
    parameters:
    - name: order_id
      in: path
      value: $inputs.orderId
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      currentStatus: $response.body#/data/status/slug
      canCancel: $response.body#/data/can_cancel
  - stepId: listItems
    description: >-
      List the order line items to confirm what is being shipped.
    operationId: listOrderItems
    parameters:
    - name: order_id
      in: path
      value: $inputs.orderId
    successCriteria:
    - condition: $statusCode == 200
  - stepId: createShipment
    description: >-
      Create a shipment against the order with the supplied courier and
      tracking details.
    operationId: createShipment
    requestBody:
      contentType: application/json
      payload: $inputs.shipmentPayload
    successCriteria:
    - condition: $statusCode == 201
  - stepId: advanceStatus
    description: >-
      Advance the order status to reflect that fulfillment has started.
    operationId: updateOrderStatus
    parameters:
    - name: order_id
      in: path
      value: $inputs.orderId
    requestBody:
      contentType: application/json
      payload:
        slug: $inputs.statusSlug
        note: $inputs.statusNote
    successCriteria:
    - condition: $statusCode == 200
  outputs:
    orderId: $inputs.orderId
    previousStatus: $steps.getOrder.outputs.currentStatus