private async Task <Either <BaseError, MediaItemScanResult <PlexEpisode> > > UpdateMetadata(
MediaItemScanResult <PlexEpisode> result,
PlexEpisode incoming)
{
PlexEpisode existing = result.Item;
var toUpdate = existing.EpisodeMetadata
.Where(em => incoming.EpisodeMetadata.Any(em2 => em2.EpisodeNumber == em.EpisodeNumber))
.ToList();
var toRemove = existing.EpisodeMetadata.Except(toUpdate).ToList();
var toAdd = incoming.EpisodeMetadata
.Where(em => existing.EpisodeMetadata.All(em2 => em2.EpisodeNumber != em.EpisodeNumber))
.ToList();
foreach (EpisodeMetadata metadata in toRemove)
{
await _televisionRepository.RemoveMetadata(existing, metadata);
}
foreach (EpisodeMetadata metadata in toAdd)
{
metadata.EpisodeId = existing.Id;
metadata.Episode = existing;
existing.EpisodeMetadata.Add(metadata);
await _metadataRepository.Add(metadata);
}
// TODO: update existing metadata
return(result);
}