public JsonResult OnPostLike(string song_id, string val)
{
if (HttpContext.User.Identity.IsAuthenticated)
{
int _id = Int32.Parse(HttpContext.User.Claims.Where(c => c.Type == "UserID").Select(c => c.Value).SingleOrDefault());
_User = _context.User.Find(_id);
preference_vector = Vspace.ToArray(_User.PreferenceVector);
}
int like = Int32.Parse(val);
if (_User != null)
{
History history = _context.History.Where(x => x.User.UserID == _User.UserID && x.Song.SongID == Int32.Parse(song_id)).FirstOrDefault();
Song song = _context.Song.Where(s => s.SongID == Int32.Parse(song_id)).Include(x => x.Album).ThenInclude(x => x.Artist).FirstOrDefault();
if (history == null)
{
history = new History()
{
User = _User, Song = song, Progress = 0, Liked = like
};
_context.History.Add(history);
_context.SaveChanges();
return(new JsonResult("updated 1"));
}
if (history.Liked != like)
{
song.Rating += like;
Artist artist = _context.Artist.Where(a => a.ArtistID == song.Album.Artist.ArtistID).FirstOrDefault();
artist.Rating += like;
history.Liked = like;
_User.PreferenceVector = Vspace.ConvertToString(
Vspace.Normalize(Vspace.Add(Vspace.Scale(like, Vspace.ToArray(song.WordVec)), Vspace.ToArray(_User.PreferenceVector))));
_context.Song.Update(song);
_context.Artist.Update(artist);
_context.History.Update(history);
_context.User.Update(_User);
_context.SaveChanges();
}
return(new JsonResult("Like1"));
}
return(new JsonResult("updated"));
}
public JsonResult OnPostIncreaseListen(string song_id)
{
if (HttpContext.User.Identity.IsAuthenticated)
{
int _id = Int32.Parse(HttpContext.User.Claims.Where(c => c.Type == "UserID").Select(c => c.Value).SingleOrDefault());
_User = _context.User.Find(_id);
}
if (_User != null)
{
History history = _context.History.Where(x => x.User.UserID == _User.UserID && x.Song.SongID == Int32.Parse(song_id)).FirstOrDefault();
Song song = _context.Song.Where(s => s.SongID == Int32.Parse(song_id)).Include(x => x.Album).ThenInclude(x => x.Artist).FirstOrDefault();
if (history == null)
{
_User.PreferenceVector = Vspace.ConvertToString(
Vspace.Normalize(Vspace.Add(Vspace.Scale(0.05f, Vspace.ToArray(song.WordVec)), Vspace.ToArray(_User.PreferenceVector))));
song.Listens += 1;
Artist artist = _context.Artist.Where(a => a.ArtistID == song.Album.Artist.ArtistID).FirstOrDefault();
artist.Listens += 1;
History new_history = new History()
{
User = _User, Song = song, Progress = 0, Liked = 0
};
_context.User.Update(_User);
_context.Song.Update(song);
_context.Artist.Update(artist);
_context.History.Add(new_history);
_context.SaveChanges();
return(new JsonResult("Listen1"));
}
return(new JsonResult("Listen2"));
}
return(new JsonResult("Clicked play " + song_id));
}
public async Task OnGetAsync(int?id)
{
preference_vector = Vspace.Ones(10);
if (HttpContext.User.Identity.IsAuthenticated)
{
int _id = Int32.Parse(HttpContext.User.Claims.Where(c => c.Type == "UserID").Select(c => c.Value).SingleOrDefault());
Playlists = _context.Playlist.Where(p => p.User.UserID == _id).ToList();
_User = _context.User.Find(_id);
preference_vector = Vspace.ToArray(_User.PreferenceVector);
}
if (id != null)
{
Song = await _context.Song.Where(s => s.Album.Artist.ArtistID == id).Include(x => x.Genre).Include(x => x.Album).ThenInclude(x => x.Artist).ToListAsync();
}
else
{
List <Song> songs = _context.Song.Include(x => x.Genre).Include(x => x.Album).ThenInclude(x => x.Artist).ToList();
if (SearchString.Length > 0)
{
SearchString = SearchString.ToLower();
if (!string.IsNullOrEmpty(SearchString))
{
Song s = _context.Song.Where(x => x.Name.ToLower() == SearchString).FirstOrDefault();
if (s != null)
{
int[] f = AudioAnalysis.Compare.ToArray(s.FreqVec);
songs = songs.OrderByDescending(x => AudioAnalysis.Compare.Similarity(f, AudioAnalysis.Compare.ToArray(x.FreqVec)) + .01 * x.Rating / (double)x.Listens).ToList();
foreach (var song in songs)
{
msg += song.Name + ":" + AudioAnalysis.Compare.Similarity(f, AudioAnalysis.Compare.ToArray(song.FreqVec)) + "; ";
}
}
else
{
Artist a = _context.Artist.Where(x => x.Name.ToLower() == SearchString).FirstOrDefault();
if (a != null)
{
songs = _context.Song.Where(s => s.Album.Artist.ArtistID == a.ArtistID).ToList();
songs = songs.OrderByDescending(x => .01 * x.Rating / (double)x.Listens).ToList();
}
else
{
Genre g = _context.Genre.Where(x => x.Name.ToLower() == SearchString).FirstOrDefault();
if (g != null)
{
songs = _context.Song.Where(s => s.Genre.GenreID == g.GenreID).ToList();
songs = songs.OrderByDescending(x => .01 * x.Rating / (double)x.Listens).ToList();
}
else
{
var word_vector = _textprocessor.PredictText(SearchString);
songs.Sort((a, b) =>
(Vspace.Loss(word_vector, Vspace.ToArray(a.WordVec)).CompareTo(Vspace.Loss(word_vector, Vspace.ToArray(b.WordVec)))));
}
}
}
}
}
Song = songs;
}
}