some changes

Femto.Common/Infrastructure/DbContextDomainExtensions.cs

@@ -0,0 +1,35 @@
+using Femto.Common.Domain;
+using MediatR;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Logging;
+
+namespace Femto.Common.Infrastructure;
+
+public static class DbContextDomainExtensions
+{
+    public static async Task EmitDomainEvents(this DbContext context, ILogger logger, IPublisher publisher, CancellationToken cancellationToken)
+    {
+        var domainEvents = context
+            .ChangeTracker.Entries<Entity>()
+            .SelectMany(e =>
+            {
+                var events = e.Entity.DomainEvents;
+                e.Entity.ClearDomainEvents();
+                return events;
+            })
+            .ToList();
+
+        logger.LogTrace("loaded {Count} domain events", domainEvents.Count);
+
+        foreach (var domainEvent in domainEvents)
+        {
+            logger.LogTrace(
+                "publishing {Type} domain event {Id}",
+                domainEvent.GetType().Name,
+                domainEvent.EventId
+            );
+            await publisher.Publish(domainEvent, cancellationToken);
+        }
+
+    }
+}