private async Task UpdateFilterStartDateRangesAsync(ElasticQuery filter, DateTime utcEnd)
{
// TODO: Cache this to save an extra search request when a date range isn't filtered.
var descriptor = new SearchDescriptor <PersistentEvent>()
.IgnoreUnavailable()
.Indices(_configuration.Events.Event.GetIndexesByQuery(filter))
.Type(_configuration.Events.Event.Name)
.SortAscending(ev => ev.Date)
.Take(1);
_configuration.Events.Event.QueryBuilder.ConfigureSearch(filter, GetQueryOptions(), descriptor);
var response = await _configuration.Client.SearchAsync <PersistentEvent>(descriptor).AnyContext();
_logger.Trace(() => response.GetRequest());
if (!response.IsValid)
{
string message = $"Error getting updated start date: {response.GetErrorMessage()}";
_logger.Error().Exception(response.ConnectionStatus.OriginalException).Message(message).Property("request", response.GetRequest()).Write();
throw new ApplicationException(message, response.ConnectionStatus.OriginalException);
}
var firstEvent = response.Hits.FirstOrDefault()?.Source;
if (firstEvent != null)
{
filter.DateRanges.Clear();
filter.WithDateRange(firstEvent.Date.UtcDateTime, utcEnd, EventIndexType.Fields.Date);
filter.Indexes.Clear();
filter.WithIndexes(firstEvent.Date.UtcDateTime, utcEnd);
}
}
