public static IEnumerable <string> GetUniqueValues(MediaType mediaType, string fieldName)
{
string key = GetFilterKey(mediaType, fieldName);
if (UniqueValuesCache.ContainsKey(key))
{
return(UniqueValuesCache[key]);
}
IEnumerable <string> enumerable = fieldName == "Item.GenreIds" ? GetEnumerable(mediaType, fieldName)?.OrderBy(x => x) :
GetEnumerable(mediaType, fieldName)?.SelectMany(x => x.SplitByListSeparator()).Distinct().OrderBy(x => x);
if (enumerable != null)
{
UniqueValuesCache.Add(key, enumerable);
IDictionary <string, object> uniqueValues = UniqueValues as IDictionary <string, object>;
uniqueValues[key] = enumerable;
}
return(enumerable);
}
static FilterHelper()
{
Messenger.Default.Register(listener, (CultureChangeMessage message) =>
{
UniqueValuesCache.Remove("Movie_GenreIds");
UniqueValuesCache.Remove("Tv_GenreIds");
PredefinedFilterCache.Remove("Movie_GenreIds");
PredefinedFilterCache.Remove("Tv_GenreIds");
});
App.Repository.Movies.CollectionChanged += (s, e) =>
{
if (e.Action == NotifyCollectionChangedAction.Add || e.Action == NotifyCollectionChangedAction.Remove)
{
List <string> expiredKeys = PredefinedFilterCache.Keys.Where(x => x.StartsWith("Movie_") && !x.EndsWith("GenreIds")).ToList();
foreach (string key in expiredKeys)
{
UniqueValuesCache.Remove(key);
PredefinedFilterCache.Remove(key);
}
}
};
App.Repository.TvShows.CollectionChanged += (s, e) =>
{
if (e.Action == NotifyCollectionChangedAction.Add || e.Action == NotifyCollectionChangedAction.Remove)
{
List <string> expiredKeys = PredefinedFilterCache.Keys.Where(x => x.StartsWith("Tv_") && !x.EndsWith("GenreIds")).ToList();
foreach (string key in expiredKeys)
{
UniqueValuesCache.Remove(key);
PredefinedFilterCache.Remove(key);
}
}
};
}
