openapi: 3.1.0
info:
  title: OpenAPI 3.1 Test Spec
  version: 1.0.0
  description: Test fixture for OpenAPI 3.1 specific features

servers:
  - url: https://api.example.com/v1

paths:
  /users:
    get:
      operationId: listUsers
      summary: List all users
      tags:
        - Users
      responses:
        '200':
          description: Successful response
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/User'
    post:
      operationId: createUser
      summary: Create a user
      tags:
        - Users
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateUserRequest'
      responses:
        '201':
          description: User created

  /users/{id}:
    get:
      operationId: getUser
      summary: Get a user by ID
      tags:
        - Users
      parameters:
        - name: id
          in: path
          required: true
          schema:
            type: string
      responses:
        '200':
          description: Successful response

webhooks:
  userCreated:
    post:
      operationId: userCreatedWebhook
      summary: User created event
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/UserEvent'
      responses:
        '200':
          description: Webhook acknowledged

  userDeleted:
    post:
      operationId: userDeletedWebhook
      summary: User deleted event
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/UserEvent'
      responses:
        '200':
          description: Webhook acknowledged

components:
  schemas:
    # Test: type as array (OpenAPI 3.1)
    NullableString:
      type:
        - string
        - 'null'
      description: A string that can be null (3.1 style)

    # Test: multiple types in array
    StringOrNumber:
      type:
        - string
        - number
      description: Can be either string or number

    # Test: const keyword (OpenAPI 3.1)
    StatusActive:
      const: active
      description: Always the literal value 'active'

    StatusCode:
      const: 200
      description: Always the number 200

    # Test: nullable with complex type
    NullableInteger:
      type:
        - integer
        - 'null'

    # Test: object with nullable properties (3.1 style)
    User:
      type: object
      required:
        - id
        - email
        - status
      properties:
        id:
          type: string
          description: User ID
        email:
          type: string
          format: email
        name:
          type:
            - string
            - 'null'
          description: Optional name (can be null)
        age:
          type:
            - integer
            - 'null'
          description: Optional age
        status:
          const: active
        metadata:
          type:
            - object
            - 'null'
          description: Optional metadata

    # Test: object with OpenAPI 3.0 style nullable (for backward compat)
    LegacyUser:
      type: object
      properties:
        id:
          type: string
        nickname:
          type: string
          nullable: true
          description: Nickname (nullable 3.0 style)

    CreateUserRequest:
      type: object
      required:
        - email
      properties:
        email:
          type: string
        name:
          type:
            - string
            - 'null'

    UserEvent:
      type: object
      required:
        - eventType
        - userId
      properties:
        eventType:
          type: string
        userId:
          type: string
        timestamp:
          type: string
          format: date-time