Mutation API

LearningGraphQLAPI.swift

func addMeasurement(id: String, measurement: ClientMeasurementRequest) -> Future<GraphQLResult<AddMeasurementMutation.Data>, Error> {
        let promise = Promise<GraphQLResult<AddMeasurementMutation.Data>, Error>()
        Network.shared.apollo.perform(mutation: AddMeasurementMutation(client_id: id, measurementsRequest: measurement)) { response in
            switch response.result {
                case .success(let graphqlResult):
                    promise.success(graphqlResult)
                case .failure(let error):
                    promise.failure(error)
            }
        }
        return promise.future
}