initial commit

backend/Domain/Base/AuditableEntity.cs

@@ -0,0 +1,19 @@
+namespace Extrudex.Domain.Base;
+
+/// <summary>
+/// Base entity providing automatic audit timestamp tracking and a primary key.
+/// All domain entities that require created/updated timestamps should inherit from this class.
+/// Inherits Id from BaseEntity, so subclasses have both identity and audit columns.
+/// </summary>
+public abstract class AuditableEntity : BaseEntity
+{
+    /// <summary>
+    /// Timestamp indicating when this entity was first created (UTC).
+    /// </summary>
+    public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
+
+    /// <summary>
+    /// Timestamp indicating when this entity was last modified (UTC).
+    /// </summary>
+    public DateTime UpdatedAt { get; set; } = DateTime.UtcNow;
+}