asyncapi: 3.0.0
info:
  title: Order Service (NATS)
  version: 1.0.0
  description: Event-driven order service using NATS

servers:
  nats:
    host: nats://localhost:4222
    protocol: nats
    description: Local NATS server

channels:
  order.created:
    address: order.created
    messages:
      OrderCreated:
        $ref: '#/components/messages/OrderCreated'

  order.placed:
    address: order.placed
    messages:
      OrderPlaced:
        $ref: '#/components/messages/OrderPlaced'

operations:
  onOrderCreated:
    action: receive
    channel:
      $ref: '#/channels/order.created'
    messages:
      - $ref: '#/channels/order.created/messages/OrderCreated'

  onOrderPlaced:
    action: send
    channel:
      $ref: '#/channels/order.placed'
    messages:
      - $ref: '#/channels/order.placed/messages/OrderPlaced'

components:
  messages:
    OrderCreated:
      name: OrderCreated
      title: Order Created
      summary: Event emitted when an order is created.
      payload:
        $ref: '#/components/schemas/OrderCreated'

    OrderPlaced:
      name: OrderPlaced
      title: Order Placed
      summary: Event emitted when an order is placed.
      payload:
        $ref: '#/components/schemas/OrderPlaced'

  schemas:
    OrderCreated:
      $id: OrderCreated
      title: OrderCreated
      type: object
      required:
        - orderId
        - customerId
        - createdAt
      properties:
        orderId:
          type: string
          format: uuid
          example: "550e8400-e29b-41d4-a716-446655440000"
        customerId:
          type: string
          example: "cust-123"
        createdAt:
          type: string
          format: date-time
          example: "2025-06-03T12:00:00Z"
        status:
          type: string
          enum:
            - created
            - pending
            - confirmed
          default: created

    OrderPlaced:
      $id: OrderPlaced
      title: OrderPlaced
      type: object
      required:
        - orderId
        - customerId
        - items
        - placedAt
      properties:
        orderId:
          type: string
          format: uuid
          example: "550e8400-e29b-41d4-a716-446655440001"
        customerId:
          type: string
          example: "cust-123"
        items:
          type: array
          items:
            type: object
            required:
              - productId
              - quantity
            properties:
              productId:
                type: string
              quantity:
                type: integer
                minimum: 1
        placedAt:
          type: string
          format: date-time
          example: "2025-06-03T12:05:00Z"
        totalAmount:
          type: number
          format: double