Google Maps Find the Nearest Open Place and Route to It

arazzo: 1.0.1
info:
  title: Google Maps Find the Nearest Open Place and Route to It
  summary: Search for places near a coordinate ranked by distance, verify the nearest is operational, then route the user there.
  description: >-
    The "find something near me and take me to it" flow that sits underneath most
    location-aware apps. A nearby search restricted to a circle and ranked by
    distance produces a candidate, Place Details confirms it is actually
    operational and open rather than permanently closed, and the Directions API
    routes from the user's coordinates to the place ID. Checking business status
    before routing is the step most integrations skip and then ship users to
    shuttered storefronts. 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: placesApi
  url: ../openapi/google-maps-places-api.yml
  type: openapi
- name: directionsApi
  url: ../openapi/google-maps-directions-api.yml
  type: openapi
workflows:
- workflowId: nearby-search-to-directions
  summary: Go from a user coordinate to turn-by-turn directions to the nearest matching place.
  description: >-
    Runs a distance-ranked nearby search inside a circle, enriches the closest
    result with Place Details to check business status and opening hours, and
    then computes a route from the origin coordinate to that place.
  inputs:
    type: object
    required:
    - latitude
    - longitude
    - apiKey
    properties:
      latitude:
        type: number
        description: Latitude of the search centre, normally the user's current position.
      longitude:
        type: number
        description: Longitude of the search centre, normally the user's current position.
      apiKey:
        type: string
        description: >-
          Google Maps Platform API key. The Directions API takes the key as the
          required `key` query parameter; the Places API takes it as the
          X-Goog-Api-Key header applied by the configured security scheme.
      radiusMeters:
        type: number
        description: Radius in metres of the circle to restrict the nearby search to.
        default: 1500
      includedTypes:
        type: array
        description: Place types to include in the nearby search (e.g. ["restaurant"]).
        items:
          type: string
        default:
        - restaurant
      searchFieldMask:
        type: string
        description: >-
          Comma-separated fields for the nearby search response, prefixed with
          "places." because results are nested under that key.
        default: places.id,places.displayName,places.formattedAddress,places.location,places.rating,places.businessStatus
      detailsFieldMask:
        type: string
        description: Comma-separated fields for the Place Details response.
        default: id,displayName,formattedAddress,location,rating,userRatingCount,businessStatus,regularOpeningHours,nationalPhoneNumber
      mode:
        type: string
        description: Travel mode used to route to the place.
        enum:
        - driving
        - walking
        - bicycling
        - transit
        default: walking
      languageCode:
        type: string
        description: BCP-47 language code for place results (e.g. "en").
        default: en
      regionCode:
        type: string
        description: CLDR region code used to bias place results (e.g. "US").
        default: US
      units:
        type: string
        description: Unit system used for the human-readable distance text.
        enum:
        - metric
        - imperial
        default: imperial
  steps:
  - stepId: searchNearby
    description: >-
      Find places of the requested types inside the circle, ranked by distance so
      the first result is the closest one rather than the most popular one.
    operationId: searchPlacesNearby
    parameters:
    - name: X-Goog-FieldMask
      in: header
      value: $inputs.searchFieldMask
    requestBody:
      contentType: application/json
      payload:
        includedTypes: $inputs.includedTypes
        languageCode: $inputs.languageCode
        regionCode: $inputs.regionCode
        rankPreference: DISTANCE
        maxResultCount: 10
        locationRestriction:
          circle:
            center:
              latitude: $inputs.latitude
              longitude: $inputs.longitude
            radius: $inputs.radiusMeters
    successCriteria:
    - condition: $statusCode == 200
    - context: $response.body
      condition: $.places.length > 0
      type: jsonpath
    outputs:
      nearestPlaceId: $response.body#/places/0/id
      nearestDisplayName: $response.body#/places/0/displayName/text
      nearestFormattedAddress: $response.body#/places/0/formattedAddress
      nearestBusinessStatus: $response.body#/places/0/businessStatus
      allPlaces: $response.body#/places
  - stepId: verifyNearestPlace
    description: >-
      Read the nearest candidate in full to confirm it is operational and to pick
      up opening hours and a phone number before sending anyone to it.
    operationId: getPlaceDetails
    parameters:
    - name: placeId
      in: path
      value: $steps.searchNearby.outputs.nearestPlaceId
    - name: X-Goog-FieldMask
      in: header
      value: $inputs.detailsFieldMask
    - name: languageCode
      in: query
      value: $inputs.languageCode
    - name: regionCode
      in: query
      value: $inputs.regionCode
    successCriteria:
    - condition: $statusCode == 200
    - context: $response.body
      condition: $.businessStatus == "OPERATIONAL"
      type: jsonpath
    outputs:
      placeId: $response.body#/id
      displayName: $response.body#/displayName/text
      formattedAddress: $response.body#/formattedAddress
      latitude: $response.body#/location/latitude
      longitude: $response.body#/location/longitude
      rating: $response.body#/rating
      userRatingCount: $response.body#/userRatingCount
      businessStatus: $response.body#/businessStatus
      openNow: $response.body#/regularOpeningHours/openNow
      phoneNumber: $response.body#/nationalPhoneNumber
      weekdayDescriptions: $response.body#/regularOpeningHours/weekdayDescriptions
  - stepId: routeToPlace
    description: >-
      Route from the origin coordinate to the verified place. The destination is
      given as a place_id-prefixed value so the route lands on the exact place the
      search returned rather than a re-geocoded name.
    operationId: getDirections
    parameters:
    - name: origin
      in: query
      value: "{$inputs.latitude},{$inputs.longitude}"
    - name: destination
      in: query
      value: "place_id:{$steps.verifyNearestPlace.outputs.placeId}"
    - name: mode
      in: query
      value: $inputs.mode
    - name: units
      in: query
      value: $inputs.units
    - name: departure_time
      in: query
      value: now
    - name: key
      in: query
      value: $inputs.apiKey
    successCriteria:
    - condition: $statusCode == 200
    - context: $response.body
      condition: $.status == "OK"
      type: jsonpath
    outputs:
      routeSummary: $response.body#/routes/0/summary
      distanceText: $response.body#/routes/0/legs/0/distance/text
      distanceMeters: $response.body#/routes/0/legs/0/distance/value
      durationText: $response.body#/routes/0/legs/0/duration/text
      durationSeconds: $response.body#/routes/0/legs/0/duration/value
      endAddress: $response.body#/routes/0/legs/0/end_address
      overviewPolyline: $response.body#/routes/0/overview_polyline/points
  outputs:
    placeId: $steps.verifyNearestPlace.outputs.placeId
    displayName: $steps.verifyNearestPlace.outputs.displayName
    openNow: $steps.verifyNearestPlace.outputs.openNow
    distanceText: $steps.routeToPlace.outputs.distanceText
    durationText: $steps.routeToPlace.outputs.durationText
    overviewPolyline: $steps.routeToPlace.outputs.overviewPolyline