public IUniverseCreationResult Create(string name)
{
var existingUniverses = Context.Universes.Where(u => u.Name == name).ToImmutableList();
if (existingUniverses.Any())
{
return UniverseCreationResult.AlreadyExists(existingUniverses.First().Id);
}
var newUniverse = new UniverseDao { Name = name };
Context.Universes.Add(newUniverse);
Context.SaveChanges();
// TODO Test if this ID is set correctly after SaveChanges
return UniverseCreationResult.Success(newUniverse.Id);
}
public IReadOnlyList<IUniverseDao> GetOrCreate(IReadOnlyList<string> universeNames)
{
var existing = Context.Universes.Where(u => universeNames.Contains(u.Name)).ToImmutableList();
var missingNames = universeNames.Except(existing.Select(u => u.Name));
var allUniverses = new List<UniverseDao>(existing);
foreach (var name in missingNames)
{
var universe = new UniverseDao { Name = name };
Context.Universes.Add(universe);
allUniverses.Add(universe);
}
Context.SaveChanges();
return allUniverses;
}
