api.yaml

openapi: 3.0.0
servers:
  - url: 'http://chat.fhdw.de'
info:
  description: >-
    Chat API.
  version: 1.0.0
  title: OpenAPI Chats
tags:
  - name: chat
    description: Everything about Chats
paths:
  /chat:
    post:
      tags:
        - chat
      summary: Get answer to the passed message
      operationId: chat
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/Message'
        required: true
      responses:
        '200':
          description: successful operation
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Message'
        '405':
          description: Invalid input
components:
  schemas:
    Message:
      title: Chat message
      description: A message, with author and date
      type: object
      properties:
        timestamp:
          type: string
          format: date-time
        message:
          type: string
        author:
          type: string
          description: Author of the message
          enum:
            - user
            - system
            - ai