hopefully not a horribly foolish refactoring

Femto.Common/Util/EventTypeMapping.cs

@@ -0,0 +1,37 @@
+using System.Reflection;
+using Femto.Common.Attributes;
+using MediatR;
+
+namespace Femto.Common.Util;
+
+public static class EventTypeMapping
+{
+    public static IDictionary<string, Type> GetEventTypeMapping(Assembly assembly)
+    {
+        var mapping = new Dictionary<string, Type>();
+
+        var types = assembly.GetTypes();
+
+        foreach (var type in types)
+        {
+            if (
+                !typeof(INotification).IsAssignableFrom(type)
+                || type.IsAbstract
+                || type.IsInterface
+            )
+                continue;
+
+            var attribute = type.GetCustomAttribute<EventTypeAttribute>();
+            if (attribute == null)
+                continue;
+
+            var eventName = attribute.Name;
+            if (!string.IsNullOrWhiteSpace(eventName))
+            {
+                mapping.TryAdd(eventName, type);
+            }
+        }
+
+        return mapping;
+    }
+}