public async Task <PlayerSongDto> GetNextSong(NextSongDto nextSongRequest)
{
MusicService service = new MusicService();
var song = service.GetNextSong(nextSongRequest, User.Identity.Name);
return(song);
}
public PlayerSongDto GetNextSong(NextSongDto songRequest, string username = null)
{
using (SmartPlayerEntities context = new SmartPlayerEntities())
{
var selectedSong = GetNextSong(songRequest, username, context);
var songUrl = ExtractSongUrl(selectedSong);
PlayerSongDto song = ExtractSongResult(username, context, selectedSong, songUrl);
return(song);
}
}
private static Song GetNextSong(NextSongDto songRequest, string username, SmartPlayerEntities context)
{
MusicRepository musicRepo = new MusicRepository(context);
var excludedSongIdList = songRequest.PlayedSongIds;
var recommendedSongs = GetRecommendedSongsForUser(username, context);
recommendedSongs = recommendedSongs.Where(x => !excludedSongIdList.Contains(x.Id)).ToList();
var similarSongs = musicRepo.GetNextSongBasedOnUserAndGrade(songRequest.CurrentSongId);
similarSongs = similarSongs.Where(x => !excludedSongIdList.Contains(x.Id)).ToList();
var safetySet = new Lazy <List <Song> >(() => musicRepo.GetNextSongBasedOnUserAndGrade(songRequest.CurrentSongId, excludedSongIdList));
var selectedSong = GetNextSong(recommendedSongs, similarSongs, safetySet);
return(selectedSong);
}
