Added temporary storage of guids of collections to be wiped on bootup when crash/reload (#109)

Co-authored-by: cake <admin@cakeandbanana.nl>
Reviewed-on: #109
Reviewed-by: defnotken <defnotken@noreply.git.lightless-sync.org>

LightlessSync/Services/PenumbraTempCollectionJanitor.cs

@@ -0,0 +1,71 @@
+using LightlessSync.Interop.Ipc;
+using LightlessSync.LightlessConfiguration;
+using LightlessSync.Services.Mediator;
+using Microsoft.Extensions.Logging;
+
+namespace LightlessSync.Services;
+
+public sealed class PenumbraTempCollectionJanitor : DisposableMediatorSubscriberBase
+{
+    private readonly IpcManager _ipc;
+    private readonly LightlessConfigService _config; 
+    private int _ran;
+
+    public PenumbraTempCollectionJanitor(
+        ILogger<PenumbraTempCollectionJanitor> logger,
+        LightlessMediator mediator,
+        IpcManager ipc,
+        LightlessConfigService config) : base(logger, mediator)
+    {
+        _ipc = ipc;
+        _config = config;
+
+        Mediator.Subscribe<PenumbraInitializedMessage>(this, _ => CleanupOrphansOnBoot());
+    }
+
+    public void Register(Guid id)
+    {
+        if (id == Guid.Empty) return;
+        if (_config.Current.OrphanableTempCollections.Add(id))
+            _config.Save();
+    }
+
+    public void Unregister(Guid id)
+    {
+        if (id == Guid.Empty) return;
+        if (_config.Current.OrphanableTempCollections.Remove(id))
+            _config.Save();
+    }
+
+    private void CleanupOrphansOnBoot()
+    {
+        if (Interlocked.Exchange(ref _ran, 1) == 1)
+            return;
+
+        if (!_ipc.Penumbra.APIAvailable)
+            return;
+
+        var ids = _config.Current.OrphanableTempCollections.ToArray();
+        if (ids.Length == 0)
+            return;
+
+        var appId = Guid.NewGuid();
+        Logger.LogInformation("Cleaning up {count} orphaned Lightless temp collections found in configuration", ids.Length);
+
+        foreach (var id in ids)
+        {
+            try
+            {
+                _ipc.Penumbra.RemoveTemporaryCollectionAsync(Logger, appId, id)
+                    .GetAwaiter().GetResult();
+            }
+            catch (Exception ex)
+            {
+                Logger.LogDebug(ex, "Failed removing orphaned temp collection {id}", id);
+            }
+        }
+
+        _config.Current.OrphanableTempCollections.Clear();
+        _config.Save();
+    }
+}