openapi: "3.0.0"
info:
  version: 1.0.0
  title: Swagger Petstore
  description: A sample API that uses a petstore as an example to demonstrate features in the OpenAPI 3.0 specification
  termsOfService: http://swagger.io/terms/
  contact:
    name: Swagger API Team
    email: foo@example.com
    url: http://madskristensen.net/
  license:
    name: MIT
    url: http://github.com/gruntjs/grunt/blob/master/LICENSE-MIT
servers:
  - url: http://petstore.swagger.io/api
paths:
  /pets:
    get:
      description: |
        Returns all pets from the system that the user has access to
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      operationId: findPets
      parameters:
        - name: tags
          in: query
          description: tags to filter by
          required: false
          style: form
          schema:
            type: array
            items:
              type: string
        - name: limit
          in: query
          description: maximum number of results to return
          required: false
          schema:
            type: integer
            format: int32
      responses:
        "200":
          description: pet response
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: "#/components/schemas/Pet"
        default:
          description: unexpected error
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/Error"
    post:
      description: Creates a new pet in the store.  Duplicates are allowed
      operationId: addPet
      requestBody:
        description: Pet to add to the store
        required: true
        content:
          application/json:
            schema:
              $ref: "#/components/schemas/NewPet"
      responses:
        "200":
          description: pet response
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/Pet"
        default:
          description: unexpected error
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/Error"
  /pets/{id}:
    get:
      description: Returns a user based on a single ID, if the user does not have access to the pet
      operationId: find pet by id
      parameters:
        - name: id
          in: path
          description: ID of pet to fetch
          required: true
          schema:
            type: integer
            format: int64
      responses:
        "200":
          description: pet response
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/Pet"
        default:
          description: unexpected error
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/Error"
    delete:
      description: deletes a single pet based on the ID supplied
      operationId: deletePet
      parameters:
        - name: id
          in: path
          description: ID of pet to delete
          required: true
          schema:
            type: integer
            format: int64
      responses:
        "204":
          description: pet deleted
        default:
          description: unexpected error
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/Error"
components:
  schemas:
    Pet:
      allOf:
        - $ref: "#/components/schemas/NewPet"
        - required:
            - id
          properties:
            id:
              type: integer
              format: int64

    NewPet:
      required:
        - name
      properties:
        name:
          type: string
        tag:
          type: string

    Error:
      required:
        - code
        - message
      properties:
        code:
          type: integer
          format: int32
        message:
          type: string

    PetSpecies:
      oneOf:
        - $ref: "#/components/schemas/Dog"
        - $ref: "#/components/schemas/Cat"

    Dog:
      properties:
        name:
          type: string
        age:
          type: int

    Cat:
      properties:
        name:
          type: string
        age:
          type: int
        lives:
          type: int