/// <summary>
/// Add the specified genres and albums to this popultion.
/// Update the SeedPopulation with the new genres so that they can be persisted
/// </summary>
/// <param name="genres"></param>
/// <param name="albums"></param>
public void Add(IEnumerable <string> genres, IEnumerable <Album> albums)
{
SeedPopulation.AddGenres(genres);
Genres.AddRange(genres);
Albums.AddRange(albums);
}
/// <summary>
/// Called to determine whether a song that has been scanned requires adding to the library, or just an existing entry updated
/// </summary>
/// <param name="song"></param>
/// <returns></returns>
private async Task <bool> DoesSongRequireAdding(ScannedSong song)
{
bool needsAdding = true;
// Lookup the path of this song in the dictionary
if ((songLookup.TryGetValue(song.SourcePath, out Song matchedSong) == true) && (matchedSong.ScanAction == Song.ScanActionType.Differ))
{
// The library is about to be changed in some way so set the modified flag
LibraryModified = true;
// Need to check whether the matched Artist or Album names have changed. If they have then treat this as a new song and mark
// the matched song for deletion
ArtistAlbum matchedArtistAlbum = ArtistAlbums.GetArtistAlbumById(matchedSong.ArtistAlbumId);
Artist matchedArtist = Artists.GetArtistById(matchedArtistAlbum.ArtistId);
// If the artist or album name has changed then treat this as a new song. Otherwise update the existing song in the library
if ((matchedArtist.Name.ToUpper() != song.ArtistName.ToUpper()) || (matchedArtistAlbum.Name.ToUpper() != song.Tags.Album.ToUpper()))
{
// The existing song needs to be deleted now.
// If the song is not deleted then there will be more than one associated with the same storage location.
// This is much less complicated than trying to move the existing song to a new Artist or Album
// If an Artist has been deleted due to this song deletion then remove it from the dictionary being used here
Artist deletedArtist = LibraryScanController.DeleteSong(matchedSong);
if (deletedArtist != null)
{
artistsInLibrary.Remove(deletedArtist.Name.ToUpper());
}
matchedSong.ScanAction = Song.ScanActionType.Matched;
}
else
{
// No need to add a new song, update the existing one
needsAdding = false;
matchedSong.Length = song.Length;
matchedSong.ModifiedTime = song.Modified;
matchedSong.Title = song.Tags.Title;
matchedSong.Track = song.Track;
await ConnectionDetailsModel.AsynchConnection.UpdateAsync(matchedSong);
// Check if the year or genre fields on the album needs updating
// Don't update the Album if it is a 'various artists' album as the these fields is not applicable
Album matchedAlbum = Albums.GetAlbumById(matchedArtistAlbum.AlbumId);
if (matchedAlbum.ArtistName != SongStorage.VariousArtistsString)
{
// Update the stored year if it is different to the artist year and the artist year is defined.
// Log when a valid year is overwritten by different year
if (matchedAlbum.Year != song.Year)
{
if (song.Year != 0)
{
matchedAlbum.Year = song.Year;
await ConnectionDetailsModel.AsynchConnection.UpdateAsync(matchedAlbum);
}
}
if (song.Tags.Genre.Length > 0)
{
// If this album does not already have a genre, or the genre has been changed then set it now
if ((matchedAlbum.Genre == null) || (matchedAlbum.Genre != song.Tags.Genre))
{
matchedAlbum.Genre = song.Tags.Genre;
await ConnectionDetailsModel.AsynchConnection.UpdateAsync(matchedAlbum);
}
}
}
}
}
return(needsAdding);
}