/// <summary>
/// Merge two album metadata instances
/// </summary>
/// <param name="first"></param>
/// <param name="second"></param>
/// <returns></returns>
public static AlbumMetadata Merge(AlbumMetadata first, AlbumMetadata second)
{
// Merge the artwork:
var outputList = new List <Artwork>(first.Artwork ?? new Artwork[0]);;
foreach (var image in second.Artwork)
{
if (outputList.Contains(image))
{
continue;
}
if (first.FindMatch(outputList, image) != null)
{
continue;
}
outputList.Add(image);
}
int?rating = first.Rating ?? second.rating;
if (first.Rating.HasValue && second.rating.HasValue)
{
rating = (first.rating.Value + second.Rating.Value) / 2;
}
return(new AlbumMetadata
{
ArtistName = string.IsNullOrWhiteSpace(first.ArtistName) ? second.ArtistName : first.ArtistName,
Artwork = outputList.ToArray(),
Comments = string.IsNullOrWhiteSpace(first.Comments) ? second.Comments : first.Comments,
DiscCount = first.DiscCount < second.DiscCount ? second.DiscCount : first.DiscCount,
IsCollection = first.IsCollection | second.IsCollection,
Name = string.IsNullOrWhiteSpace(first.Name) ? second.Name : first.Name,
Rating = rating,
SortName = string.IsNullOrWhiteSpace(first.SortName) ? second.SortName : first.sortName,
TrackCount = first.TrackCount < second.TrackCount ? second.TrackCount : first.TrackCount,
Year = first.Year ?? second.Year
});
}
/// <summary>
/// Create an album from a bunch of songs
/// </summary>
/// <param name="songs"></param>
/// <returns></returns>
public static AlbumMetadata Factory(IEnumerable <SongMetadata> songs = null)
{
// If no songs, create an empty album
if (songs == null)
{
return(new AlbumMetadata());
}
// Compute the number of tracks in the album:
int?trackCount = (from song in songs
where song.TrackCount.HasValue
select song.TrackCount).Max();
int?trackMax = songs.Max(song => song.TrackNumber);
trackCount = trackCount ?? trackMax ?? songs.Count();
int?discCount = (from song in songs
where song.DiscCount.HasValue
select song.DiscCount).Max();
int?discMax = songs.Max(song => song.DiscNumber);
discCount = discCount ?? discMax;
string albumArtist = (from song in songs
where !string.IsNullOrWhiteSpace(song.AlbumArtist)
select song.AlbumArtist).FirstOrDefault();
var ret = new AlbumMetadata
{
ArtistName = albumArtist,
DiscCount = discCount,
};
ret.ClearChanges();
return(ret);
}
