openapi: "3.0.0"
info:
  version: 1.0.0
  title: Swagger Petstore
  license:
    name: MIT
servers:
  - url: http://petstore.swagger.io/{version}
    variables:
      version:
        enum:
          - v1
          - v2
        default: v1
paths:
  /pets:
    get:
      summary: List all pets
      operationId: listPets
      tags:
        - pets
      parameters:
        - name: limit
          in: query
          description: How many items to return at one time (max 100)
          required: true
          schema:
            type: integer
            format: int32
            nullable: true
        - name: ids
          in: query
          description: Filter pets with Ids
          schema:
            type: array
            items:
              type: integer
              format: int32
      responses:
        '200':
          description: An paged array of pets
          headers:
            x-next:
              description: A link to the next page of responses
              schema:
                type: string
          content:
            application/json:    
              schema:
                $ref: "#/components/schemas/Pets"
        default:
          description: unexpected error
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/Error"
    post:
      summary: Create a pet
      operationId: createPets
      tags:
        - pets
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/PetCreate'
      responses:
        '201':
          description: Null response
        default:
          description: unexpected error
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/Error"
  /pets/{petId}:
    get:
      summary: Info for a specific pet
      operationId: showPetById
      tags:
        - pets
      parameters:
        - name: petId
          in: path
          required: true
          description: The id of the pet to retrieve
          schema:
            type: integer
            format: int64
      responses:
        '200':
          description: Expected response to a valid request
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/Pets"
        default:
          description: unexpected error
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/Error"
components:
  schemas:
    Address:
      type: object
      x-model: Address
      required:
        - city
      properties:
        street:
          type: string
        city:
          type: string
    Tag:
      type: string
      enum:
        - Cat
        - Dog
        - Bird
    Position:
      type: integer
      enum:
        - 1
        - 2
        - 3
    Pet:
      type: object
      x-model: Pet
      allOf:
        - $ref: "#/components/schemas/PetCreate"
      required:
        - id
      properties:
        id:
          type: integer
          format: int64
    PetCreate:
      type: object
      x-model: PetCreate
      required:
        - name
      properties:
        name:
          type: string
        tag:
          type: "#/components/schemas/Tag"
        address:
          $ref: "#/components/schemas/Address"
        position:
          $ref: "#/components/schemas/Position"
    Pets:
      type: array
      items:
        $ref: "#/components/schemas/Pet"
    Error:
      type: object
      required:
        - code
        - message
      properties:
        code:
          type: integer
          format: int32
        message:
          type: string