Querying Geofire with Swift

geofirequeries.swift

let geofireRef = FIRDatabase.database().reference()
guard let geofire = GeoFire(firebaseRef: geofireRef.child("venues/")) else { return }

geofire.getLocationForKey(placeKey) { (location, error) in
    if let error = error {
        print("An error occurred getting the location for \(placeKey): \(error.localizedDescription)")
    } else if let location = location {
        print("Location for \(placeKey) is [\(location.coordinate.latitude), \(location.coordinate.longitude)]")
    } else {
        print("GeoFire does not contain a location for \(placeKey)")
    }
}

let center = CLLocation(latitude: 19.9263136, longitude: -155.8868328)
if let circleQuery = geofire.query(at: center, withRadius: 1.0) {
    _ = circleQuery.observe(.keyEntered) { (key, location) in
        print("Key '\(key)' entered the search area and is at location '\(location)'")
    }

    circleQuery.observeReady{
        print("All initial data has been loaded and events have been fired for circle query!")
    }
}

// Query location by region
let span = MKCoordinateSpanMake(0.005, 0.005)
let region = MKCoordinateRegionMake(center.coordinate, span)
if let regionQuery = geofire.query(with: region) {
    _ = regionQuery.observe(.keyMoved) { (key, location) in
        print("Key '\(key)' moved within search area and is at location '\(location)'")
    }


    regionQuery.observeReady{
        print("All initial data has been loaded and events have been fired for region query!")
    }
}