public IEnumerable <SongDto> Get(SongMarkDto searchMarkDto, int desiredSongs)
{
var songsSelected = new List <SongDto>();
var songDistance = new List <Tuple <Song, double> >();
var songs
= _repositoryHolder
.SongRepository
.Get();
foreach (var song in songs)
{
songDistance.Add(
new Tuple <Song, double>(
song,
_songMarkCalculator
.GetDistance(
searchMarkDto,
new SongMarkDto()
{
Energy = song.MeanEnergy,
Tempo = song.MeanTempo
}
)
)
);
}
return(songDistance
.OrderBy(e => e.Item2)
.Take(desiredSongs)
.Select(e => ToSongDto(e.Item1)));
}
public void Insert(SongMarkDto songMarkDto)
{
var song = _repositoryHolder.SongRepository.Get(songMarkDto.SongId);
var newSongMark =
new SongMark()
{
Energy = Convert.ToInt32(songMarkDto.Energy),
Tempo = Convert.ToInt32(songMarkDto.Tempo),
Song = song
};
song.SongMarks.Add(newSongMark);
RecalculateMeanForSong(song);
_repositoryHolder.SongRepository.Update(songMarkDto.SongId, song);
_uof.Save();
}
public string Post([FromUri] SongMarkDto songMarkDto)
{
_songMarksService.Insert(songMarkDto);
return("Successfully inserted");
}
internal double GetDistance(SongMarkDto searchMarkDto, SongMarkDto songMarkDto)
{
return(Math.Sqrt(
Math.Pow(searchMarkDto.Energy - songMarkDto.Energy, 2)
+ Math.Pow(searchMarkDto.Tempo - songMarkDto.Tempo, 2)));
}
