private async Task UpdatePointsOfInterest(OsmChange changes)
{
var deleteTasks = new List <Task>();
var relevantTagsDictionary = _tagsHelper.GetAllTags();
foreach (var poiToRemove in changes.Delete)
{
var task = _elasticSearchGateway.DeleteOsmPointOfInterestById(poiToRemove.Type.ToString().ToLower() + "_" + poiToRemove.Id);
deleteTasks.Add(task);
}
await Task.WhenAll(deleteTasks);
var updateTasks = new List <Task <ICompleteOsmGeo> >();
foreach (var poiToUpdate in changes.Modify
.Concat(changes.Create)
.Where(o => IsRelevantPointOfInterest(o, relevantTagsDictionary)))
{
var task = _osmGateway.GetCompleteElement(poiToUpdate.Id.Value, poiToUpdate.Type);
updateTasks.Add(task);
}
var allElemets = await Task.WhenAll(updateTasks);
var osmNamesDictionary = allElemets.GroupBy(e => e.Tags.GetName()).ToDictionary(g => g.Key, g => g.ToList());
var features = _osmGeoJsonPreprocessorExecutor.Preprocess(osmNamesDictionary);
foreach (var poiToUpdate in changes.Modify
.Where(o => IsRelevantPointOfInterest(o, relevantTagsDictionary)))
{
var featureFromDb = await _elasticSearchGateway.GetPointOfInterestById(poiToUpdate.Type.ToString().ToLower() + "_" + poiToUpdate.Id, Sources.OSM);
if (featureFromDb == null)
{
continue;
}
var featureToUpdate = features.First(f => f.GetId().Equals(featureFromDb.GetId()));
foreach (var attributeKey in featureFromDb.Attributes.GetNames().Where(n => n.StartsWith(FeatureAttributes.POI_PREFIX)))
{
featureToUpdate.Attributes.AddOrUpdate(attributeKey, featureFromDb.Attributes[attributeKey]);
}
if (featureToUpdate.Geometry.OgcGeometryType == OgcGeometryType.Point &&
featureFromDb.Geometry.OgcGeometryType != OgcGeometryType.Point)
{
featureToUpdate.Geometry = featureFromDb.Geometry;
}
}
await _elasticSearchGateway.UpdatePointsOfInterestData(features);
}