public Game Add(Game game)
{
//Validate input
if (game == null)
{
throw new ArgumentNullException(nameof(game));
}
//Game must be valid
ObjectValidator.Validate(game);
//Game names must be unique
var existing = FindByName(game.Name);
if (existing != null)
{
throw new Exception("Game must be unique.");
}
return(AddCore(game));
}
public Game Update( int id, Game game )
{
//Validate
if (id <= 0)
throw new ArgumentOutOfRangeException(nameof(id), "Id must be > 0.");
if (game == null)
throw new ArgumentNullException(nameof(game));
//new ObjectValidator().Validate(game);
ObjectValidator.Validate(game);
var existing = GetCore(id);
if (existing == null)
throw new Exception("Game does not exist.");
//Game names must be unique
var sameName = FindByName(game.Name);
if (sameName != null && sameName.Id != id)
throw new Exception("Game must be unique.");
return UpdateCore(id, game);
}