openapi: "3.1.0"
info:
  description: Sample API definition that validates cleanly
  version: 1.0.0
  title: Swagger Petstore
  license:
    name: MIT
    url: "http://www.apache.org/licenses/LICENSE-2.0.html"
  contact:
    email: "apiteam@swagger.io"
servers:
  - url: http://petstore.swagger.io/v1
tags:
  - name: pets
    description: A pet
paths:
  /pets:
    get:
      summary: List all pets
      description: List all pets
      operationId: list_pets
      tags:
        - pets
      parameters:
        - name: limit
          in: query
          description: How many items to return at one time (max 100)
          required: false
          schema:
            type: integer
            format: int32
            default: 10
            minimum: 0
            maximum: 100
        - name: start
          in: query
          description: A token which indicates the first item to return
          required: false
          schema:
            type: string
            pattern: '^[a-zA-Z0-9 ]+$'
            minLength: 1
            maxLength: 128
      responses:
        '200':
          description: A paged array of pets
          headers:
            x-next:
              schema:
                type: string
                description: A link to the next page of responses
                pattern: '^[a-zA-Z0-9]+$'
                minLength: 1
                maxLength: 128
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/PetCollection"
        default:
          description: unexpected error
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/Error"
    post:
      summary: Create a pet
      description: Create a pet
      operationId: create_pet
      tags:
        - pets
      responses:
        '201':
          description: success!
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/Pet"
        default:
          description: unexpected error
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/Error"
  /pets/{pet_id}:
    get:
      summary: Info for a specific pet
      description: Get information about a specific pet
      operationId: get_pet
      tags:
        - pets
      parameters:
        - name: pet_id
          in: path
          required: true
          description: The id of the pet to retrieve
          schema:
            type: string
            pattern: '^[0-9]+$'
            minLength: 1
            maxLength: 100
      responses:
        '200':
          description: Expected response to a valid request
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/Pet"
        default:
          description: unexpected error
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/Error"
components:
  schemas:
    Pet:
      type: object
      description:
        A pet
      required:
        - id
        - name
      properties:
        id:
          type: integer
          format: int64
          minimum: 0
          maximum: 1024
          description: "id property"
        name:
          type: string
          description: "name property"
          pattern: '^[a-zA-Z0-9]+$'
          minLength: 1
          maxLength: 50
        tag:
          type: string
          description: "tag property"
          pattern: '^[a-zA-Z0-9]+$'
          minLength: 1
          maxLength: 50
      example:
        id: 1
        name: doggie
        tag: dog
    PetCollection:
      type: object
      description:
        A list of pets
      required:
        - pets
        - limit
      properties:
        pets:
          type: array
          minItems: 0
          maxItems: 20
          description: "object containing a list of pets"
          items:
            $ref: "#/components/schemas/Pet"
        limit:
          type: integer
          format: int32
          minimum: 0
          maximum: 100
          description: limit
        next_token:
          type: string
          description: next token
          pattern: '^[a-zA-Z0-9_]+$'
          minLength: 1
          maxLength: 128
        first:
          allOf:
            - $ref: '#/components/schemas/PageLink'
            - description: Link to the first page of results
        last:
          allOf:
            - $ref: '#/components/schemas/PageLink'
            - description: Link to the last page of results
        previous:
          allOf:
            - $ref: '#/components/schemas/PageLink'
            - description: Link to the previous page of results
        next:
          allOf:
            - $ref: '#/components/schemas/PageLink'
            - description: Link to the next page of results
      example:
        pets:
        - id: 1
          name: doggie
          tag: dog
        next_url: 'https://www.nexturl.com'
        limit: 50
        next_token: TOKEN_STRING
    PageLink:
      type: object
      description: Link to a page of results
      properties:
        href:
          description: Request URL string
          type: string
          pattern: '^[a-zA-Z0-9]+$'
          minLength: 1
          maxLength: 128
    Error:
      type: object
      description:
        An error in processing a service request
      required:
        - code
        - message
      properties:
        code:
          type: integer
          format: int32
          minimum: 0
          maximum: 599
          description: "code property"
        message:
          type: string
          description: "message property"
          pattern: '^[a-zA-Z0-9_ ]*$'
          minLength: 1
          maxLength: 300
      example:
        code: 123
        message: "error occurred"