public IHttpActionResult Update(int id, AlbumModel album)
{
if (!this.ModelState.IsValid)
{
return BadRequest(ModelState);
}
var existingAlbum = this.data.Albums.Find(id);
if (existingAlbum == null)
{
return BadRequest(NoSuchAlbumId);
}
existingAlbum.Title = album.Title;
existingAlbum.Year = album.Year;
existingAlbum.Producer = album.Producer;
if (album.ArtistIds != null)
{
foreach (var albumId in album.ArtistIds)
{
var artist = this.data.Artists.Find(albumId);
if (album != null)
{
existingAlbum.Artists.Add(artist);
}
else
{
throw new ArgumentException(NoSuchArtistId);
}
}
}
if (album.SongIds != null)
{
foreach (var songId in album.SongIds)
{
var song = this.data.Songs.Find(songId);
if (song != null)
{
existingAlbum.Songs.Add(song);
}
else
{
throw new ArgumentException(NoSuchSongId);
}
}
}
this.data.SaveChanges();
album.AlbumId = existingAlbum.Id;
return Ok(album);
}
public IHttpActionResult Create(AlbumModel album)
{
if (!this.ModelState.IsValid)
{
return BadRequest(ModelState);
}
var newAlbum = new Album
{
Title = album.Title,
Year = album.Year,
Producer = album.Producer
};
if (album.ArtistIds != null)
{
foreach (var id in album.ArtistIds)
{
var artist = this.data.Artists.Find(id);
if (album != null)
{
newAlbum.Artists.Add(artist);
}
else
{
throw new ArgumentException(NoSuchArtistId);
}
}
}
if (album.SongIds != null)
{
foreach (var id in album.SongIds)
{
var song = this.data.Songs.Find(id);
if (song != null)
{
newAlbum.Songs.Add(song);
}
else
{
throw new ArgumentException(NoSuchSongId);
}
}
}
this.data.Albums.Add(newAlbum);
this.data.SaveChanges();
album.AlbumId = newAlbum.Id;
return Ok(album);
}
