initial commit from an older template

Database/Extensions/ChangeTrackerExtensions.cs

@@ -0,0 +1,54 @@
+using GamificationService.Models.Database;
+using GamificationService.Services.CurrentUsers;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.ChangeTracking;
+
+namespace GamificationService.Database.Extensions;
+
+public static class ChangeTrackerExtensions
+{
+    public static void SetAuditProperties(this ChangeTracker changeTracker, ICurrentUserService currentUserService)
+    {
+        changeTracker.DetectChanges();
+        IEnumerable<EntityEntry> entities =
+            changeTracker
+                .Entries()
+                .Where(t => t.Entity is AuditableEntity &&
+                            (
+                                t.State == EntityState.Deleted
+                                || t.State == EntityState.Added
+                                || t.State == EntityState.Modified
+                            ));
+
+        if (entities.Any())
+        {
+            DateTimeOffset timestamp = DateTimeOffset.UtcNow;
+
+            string user = currentUserService.GetCurrentUser().Login ?? "Unknown";
+
+            foreach (EntityEntry entry in entities)
+            {
+                AuditableEntity entity = (AuditableEntity)entry.Entity;
+
+                switch (entry.State)
+                {
+                    case EntityState.Added:
+                        entity.CreatedOn = timestamp;
+                        entity.CreatedBy = user;
+                        entity.UpdatedOn = timestamp;
+                        entity.UpdatedBy = user;
+                        break;
+                    case EntityState.Modified:
+                        entity.UpdatedOn = timestamp;
+                        entity.UpdatedBy = user;
+                        break;
+                    case EntityState.Deleted:
+                        entity.UpdatedOn = timestamp;
+                        entity.UpdatedBy = user;
+                        entry.State = EntityState.Deleted;
+                        break;
+                }
+            }
+        }
+    }
+}