arazzo: 1.0.1
info:
  title: Tomorrow.io Route Weather Hazard Scan
  summary: Retrieve weather along a planned route, then scan the destination for severe events.
  description: >-
    A logistics-planning flow that combines ETA-aware route weather with
    destination event awareness. The workflow submits a polyline of timed
    waypoints to the Weather on Routes API to get conditions at each leg, then
    queries the Events API at the final waypoint for severe weather that could
    disrupt arrival. This chains route forecasting into destination hazard
    detection. Every step spells out its request inline so the flow can be read
    and executed without opening the underlying OpenAPI description.
  version: 1.0.0
sourceDescriptions:
- name: routeApi
  url: ../openapi/tomorrow-io-route-api-openapi.yml
  type: openapi
- name: eventsApi
  url: ../openapi/tomorrow-io-events-api-openapi.yml
  type: openapi
workflows:
- workflowId: route-weather-hazard-scan
  summary: Get per-waypoint route weather, then scan the destination for severe events.
  description: >-
    Submits timed route waypoints for weather retrieval, then checks the
    destination coordinate for severe weather events within a buffer.
  inputs:
    type: object
    required:
    - apikey
    - waypoints
    - fields
    - destination
    properties:
      apikey:
        type: string
        description: Tomorrow.io API key passed as the apikey query parameter.
      waypoints:
        type: array
        description: Ordered route waypoints, each a GeoJSON Point location with an arrival time.
      fields:
        type: array
        description: Weather data layer fields to retrieve at each waypoint.
      units:
        type: string
        description: Unit system (metric or imperial).
        default: metric
      destination:
        type: string
        description: Destination as 'lat,lng' for the event scan.
      buffer:
        type: number
        description: Buffer radius around the destination in km.
        default: 25
  steps:
  - stepId: getRouteWeather
    description: >-
      Retrieve weather data layers at each timed waypoint along the route.
    operationId: postRoute
    parameters:
    - name: apikey
      in: query
      value: $inputs.apikey
    requestBody:
      contentType: application/json
      payload:
        waypoints: $inputs.waypoints
        fields: $inputs.fields
        units: $inputs.units
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      waypoints: $response.body#/data/waypoints
  - stepId: scanDestinationEvents
    description: >-
      Scan the destination coordinate for severe weather events that could
      disrupt arrival.
    operationId: getEvents
    parameters:
    - name: location
      in: query
      value: $inputs.destination
    - name: buffer
      in: query
      value: $inputs.buffer
    - name: apikey
      in: query
      value: $inputs.apikey
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      events: $response.body#/data/events
    onSuccess:
    - name: hazardsAtDestination
      type: end
      criteria:
      - context: $response.body
        condition: $.data.events.length > 0
        type: jsonpath
    - name: clearDestination
      type: end
      criteria:
      - context: $response.body
        condition: $.data.events.length == 0
        type: jsonpath
  outputs:
    routeWaypoints: $steps.getRouteWeather.outputs.waypoints
    destinationEvents: $steps.scanDestinationEvents.outputs.events