---
# OpenAPI Spec for the KongAir Flights service
openapi: 3.0.0

info:
  description: KongAir Flights service provides the scheduled flights for KongAir
  version: 0.1.0
  title: Flights Service

servers:
- url: https://api.kong-air.com
  description: KongAir API Server

paths:
  /health:
    get:
      summary: Health check endpoint for Kubernetes
      description: Endpoint that returns the service health status.
      responses:
        '200':
          description: Service is healthy
          content:
            application/json:
              schema:
                type: object
                properties:
                  status:
                    type: string
                    example: "OK"
          headers:
           hostname:
             description: "The hostname of the machine fulfilling the request."
             schema:
               type: string
        '500':
          description: Service is unhealthy
          content:
            application/json:
              schema:
                type: object
                properties:
                  status:
                    type: string
                    example: "unhealthy"
  "/flights":
    get:
      summary: Get KongAir planned flights
      description: |
        Returns all the scheduled flights for a given day
      tags:
      - flight-data
      operationId: get-flights
      parameters:
        - name: date
          in: query
          description: Filter by date (defaults to current day)
          required: false
          style: form
          schema:
            type: string
            format: date
      responses:
        '200':
          description: Successful respone with scheduled flights
          headers:
           hostname:
             description: "The hostname of the machine fulfilling the request."
             schema:
               type: string
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/Flight'
              examples:
                Example Flights List:
                  value: |
                   [
                      {
                        "number": "KD924",
                        "route_id": "LHR-SFO",
                        "scheduled_departure": "2024-03-20T09:12:28Z",
                        "scheduled_arrival": "2024-03-20T19:12:28Z"
                      },
                      {
                        "number": "KD925",
                        "route_id": "SFO-LHR",
                        "scheduled_departure": "2024-03-21T09:12:28Z",
                        "scheduled_arrival": "2024-03-21T19:12:28Z"
                      }
                   ]

  "/flights/{flightNumber}":
    get:
      summary: Get a specific flight by flight number
      description: |
        Returns a specific flight given its flight number
      tags:
      - flight-data
      operationId: get-flight-by-number
      parameters:
        - name: flightNumber
          in: path
          description: The flight number
          required: true
          style: simple
          schema:
            type: string
      responses:
        '200':
          description: Successful response with the requested flight
          headers:
           hostname:
             description: "The hostname of the machine fulfilling the request."
             schema:
               type: string
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Flight'
              examples:
                Example Flight KD924:
                  value: |
                    {
                      "number": "KD924",
                      "route_id": "LHR-SFO",
                      "scheduled_departure": "2024-03-20T09:12:28Z",
                      "scheduled_arrival": "2024-03-20T19:12:28Z"
                    }
        '404':
          description: Flight not found
          content:
            application/json:
              schema:
                type: object
                properties:
                  message:
                    type: string

  "/flights/{flightNumber}/details":
    get:
      summary: Fetch more details about a flight
      description: Fetch more details about a flight
      tags:
      - flight-data
      operationId: get-flight-details
      parameters:
      - name: flightNumber
        in: path
        description: The flight number
        required: true
        style: simple
        schema:
          type: string
      responses:
        '200':
          description: Successful response with the requested flight details
          headers:
           hostname:
             description: "The hostname of the machine fulfilling the request."
             schema:
               type: string
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/FlightDetails'
        '404':
          description: Flight not found
          content:
            application/json:
              schema:
                type: object
                properties:
                  message:
                    type: string

components:
  schemas:
    Flight:
      type: object
      properties:
        number:
          type: string
        route_id:
          type: string
        scheduled_departure:
          type: string
          format: date-time
        scheduled_arrival:
          type: string
          format: date-time
      required:
        - number
        - route_id
        - scheduled_departure
        - scheduled_arrival
    FlightDetails:
      type: object
      properties:
        flight_number:
          type: string
        in_flight_entertainment:
          type: boolean
        meal_options:
          type: array
          items:
            type: string
        aircraft_type:
          type: string
      required:
        - flight_number
        - in_flight_entertainment
        - mean_options
        - aircraft_type