Add optional `ignoreMissingLibraryDir` flag to SettingsManager.Transaction

StabilityMatrix.Core/Services/ISettingsManager.cs

@@ -20,7 +20,7 @@ public interface ISettingsManager
     SettingsTransaction BeginTransaction();
 
     /// <inheritdoc />
-    void Transaction(Action<Settings> func);
+    void Transaction(Action<Settings> func, bool ignoreMissingLibraryDir = false);
 
     /// <inheritdoc />
     void Transaction<TValue>(Expression<Func<Settings, TValue>> expression, TValue value);

StabilityMatrix.Core/Services/SettingsManager.cs

@@ -58,12 +58,25 @@ public class SettingsManager : ISettingsManager
     /// <inheritdoc />
     public SettingsTransaction BeginTransaction()
     {
+        if (!IsLibraryDirSet)
+        {
+            throw new InvalidOperationException("LibraryDir not set when BeginTransaction was called");
+        }
         return new SettingsTransaction(this, SaveSettingsAsync);
     }
     
     /// <inheritdoc />
-    public void Transaction(Action<Settings> func)
+    public void Transaction(Action<Settings> func, bool ignoreMissingLibraryDir = false)
+    {
+        if (!IsLibraryDirSet)
+        {
+            if (ignoreMissingLibraryDir)
             {
+                func(Settings);
+                return;
+            }
+            throw new InvalidOperationException("LibraryDir not set when Transaction was called");
+        }
         using var transaction = BeginTransaction();
         func(transaction.Settings);
         transaction.Dispose();