private async Task Updatehighways(OsmChange changes)
{
var deleteTasks = new List <Task>();
foreach (var highwaysToRemove in changes.Delete.OfType <Way>())
{
var task = _elasticSearchGateway.DeleteHighwaysById(highwaysToRemove.Id.ToString());
deleteTasks.Add(task);
}
await Task.WhenAll(deleteTasks);
var updateTasks = new List <Task <CompleteWay> >();
foreach (var highwaysToUpdate in changes.Modify
.Concat(changes.Create)
.OfType <Way>()
.Where(w => w.Tags != null && w.Tags.ContainsKey("highway")))
{
var task = _osmGateway.GetCompleteWay(highwaysToUpdate.Id.ToString());
updateTasks.Add(task);
}
var updatedWays = await Task.WhenAll(updateTasks);
var geoJsonHighways = _osmGeoJsonPreprocessorExecutor.Preprocess(updatedWays.ToList());
await _elasticSearchGateway.UpdateHighwaysData(geoJsonHighways);
}