public PLAYLIST_SONG(PLAYLIST playlist, SONG song, int order, bool allowDuplicates = true)
{
if (!allowDuplicates && playlist.PLAYLIST_SONGS.Any(i => i.SONG_ID == SONG_ID))
{
throw new Exception("Playlist doesn't allows duplicate songs");
}
if (playlist.PLAYLIST_SONGS.Any(i => i.ORDER == order))
{
playlist.EmptyPosition(order);
}
PLAYLIST_ID = playlist.ID;
SONG_ID = song.ID;
ORDER = order;
}
public static PLAYLIST CreatePlaylist(int userID, string name, bool isPublic = false)
{
var context = DJPlaylistContext.GetContext();
var user = context.USERS.FirstOrDefault(i => i.ID == userID);
if (user == null)
{
throw new Exception("User not found");
}
if (context.PLAYLISTS.Any(i => i.NAME == name && i.USER_ID == userID))
{
throw new Exception("There is already a playlist with this name");
}
var playlist = new PLAYLIST(name, userID, isPublic);
context.PLAYLISTS.Add(playlist);
context.SaveChanges();
var userPlaylist = new USER_PLAYLIST(user, playlist);
context.USER_PLAYLISTS.Add(userPlaylist);
context.SaveChanges();
return(playlist);
}
public USER_PLAYLIST(USER user, PLAYLIST playlist)
{
USER_ID = user.ID;
PLAYLIST_ID = playlist.ID;
DATE_CREATED = DateTime.Now;
}