public IHttpActionResult Create(SongDataModel newSong)
{
if (newSong == null || newSong.Title == null)
{
return this.BadRequest("You must provide song title.");
}
if (newSong.ArtistId == null || !this.db.Artists.Any(a => a.Id == newSong.ArtistId))
{
return this.BadRequest("Invalid artist id.");
}
if (newSong.AlbumId != null && !this.db.Albums.Any(a => a.Id == newSong.AlbumId))
{
return this.BadRequest("Invalid album id.");
}
var song = new Song
{
Title = newSong.Title,
Genre = newSong.Genre,
Year = newSong.Year,
AlbumId = newSong.AlbumId,
ArtistId = newSong.ArtistId.Value
};
this.db.Songs.Add(song);
this.db.SaveChanges();
return this.Ok(song);
}
public IHttpActionResult Update(SongDataModel song)
{
if (song == null || song.Id == null)
{
return this.BadRequest("You must provide song ID.");
}
var existingSong = this.db.Songs.Find(song.Id);
if (existingSong == null)
{
return this.BadRequest("A song with the provided ID do not exist.");
}
if (song.Title != null)
{
existingSong.Title = song.Title;
}
if (song.Genre != null)
{
existingSong.Genre = song.Genre;
}
if (song.Year != null)
{
existingSong.Year = song.Year;
}
if (song.ArtistId != null && this.db.Artists.Any(a => a.Id == song.ArtistId))
{
existingSong.ArtistId = song.ArtistId.Value;
}
if (song.AlbumId != null && this.db.Albums.Any(a => a.Id == song.AlbumId))
{
existingSong.AlbumId = song.AlbumId.Value;
}
this.db.SaveChanges();
return this.Ok(existingSong);
}