void Close()
{
if (_fs != null)
{
if (_root != null)
{
foreach (var e in _root.Descendants <IDisposable>().Reverse())
{
e.Dispose();
}
_root = null;
}
_command.UnregisterAll(keepFilter: _existingCommands.Contains);
if (CurrentWorld != null)
{
CurrentWorld = null;
}
_fs.Dispose();
_fs = null;
}
}
public bool Open(IActivityMonitor m, string worldFullNameOr1BasedIndex)
{
if (!CanOpen)
{
throw new InvalidOperationException();
}
using (m.OpenInfo($"Opening world '{worldFullNameOr1BasedIndex}'."))
{
var all = Store.ReadWorlds(m);
if (all == null)
{
return(false);
}
IRootedWorldName w;
if (Int32.TryParse(worldFullNameOr1BasedIndex, out var idx))
{
if (idx >= 1 && idx <= all.Count)
{
w = all[idx - 1];
m.Info($"World '{worldFullNameOr1BasedIndex}' is world {w.FullName}.");
}
else
{
m.Error($"Invalid index: {idx} out of {all.Count}.");
return(false);
}
}
else
{
w = all.FirstOrDefault(x => x.FullName.Equals(worldFullNameOr1BasedIndex, StringComparison.OrdinalIgnoreCase));
if (w == null)
{
m.Error($"Unable to find World {worldFullNameOr1BasedIndex} among {all.Select( x => x.FullName ).Concatenate()}.");
return(false);
}
}
Debug.Assert(w != null);
Close();
var keySnapshot = _userKeyStore.CreateSnapshot();
var baseProvider = new SimpleServiceContainer();
_fs = new FileSystem(w.Root, _command, _userKeyStore, baseProvider);
baseProvider.Add <ISimpleObjectActivator>(new SimpleObjectActivator());
baseProvider.Add(_command);
baseProvider.Add(_fs);
baseProvider.Add <IWorldName>(w);
baseProvider.Add(Store);
baseProvider.Add(_appLife);
baseProvider.Add(_userKeyStore);
var original = Store.ReadWorldDescription(m, w).Root;
var expanded = XTypedFactory.PreProcess(m, original);
if (expanded.Errors.Count > 0)
{
return(false);
}
bool resetSecrets = true;
_root = _factory.CreateInstance <XTypedObject>(m, expanded.Result, baseProvider);
if (_root != null)
{
var xW = _root.Descendants <IXTypedObjectProvider <World> >().FirstOrDefault();
if (xW != null)
{
if (_userKeyStore.Infos.All(secret => !secret.IsRequired || secret.IsSecretAvailable))
{
CurrentWorld = xW.GetObject(m);
if (CurrentWorld != null)
{
return(true);
}
}
else
{
var missing = _userKeyStore.Infos.Where(secret => secret.IsRequired && !secret.IsSecretAvailable).Select(s => s.Name).Concatenate();
m.Error($"Missing one or more secrets. These are required to continue: {missing}.");
resetSecrets = false;
}
}
else
{
m.Error("Missing expected World definition element.");
}
}
if (resetSecrets)
{
keySnapshot.RestoreTo(_userKeyStore);
}
Close();
return(false);
}
}