Async/Await GMSPlace Search

AsyncGMSPlaceSearch.swift

import GooglePlaces

func getAddresses(withQuery query: String) async -> [GMSPlace]? {
    let client = GMSPlacesClient.shared()
    let token = GMSAutocompleteSessionToken.init()
    let filter = GMSAutocompleteFilter()
    let predictions: [GMSAutocompletePrediction]? = await withCheckedContinuation { continuation in
        client.findAutocompletePredictions(
            fromQuery: query, filter: filter, sessionToken: token,
            callback: { (results, error) in
                guard error == nil else {
                    continuation.resume(returning: nil)
                    return
                }
                guard let results = results else {
                    continuation.resume(returning: nil)
                    return
                }
                continuation.resume(returning: results)
            })
    }

    guard
        let places: [GMSPlace?] = await predictions?.asyncMap({ prediction in
            return await withCheckedContinuation { continuation in
                client.lookUpPlaceID(prediction.placeID) { place, error in
                    continuation.resume(returning: place)
                }
            }
        })
    else { return nil }
    return places.compactMap({ $0 })
}