Initial code commit.

Sufi.Demo.PeopleDirectory.Domain/Common/AuditableEntity.cs

@@ -0,0 +1,13 @@
+using System;
+
+namespace Sufi.Demo.PeopleDirectory.Domain.Common
+{
+	public abstract class AuditableEntity<TId> : IAuditableEntity<TId>
+	{
+		public TId Id { get; set; } = default!;
+		public string? CreatedBy { get; set; }
+		public DateTime CreatedOn { get; set; }
+		public string? LastModifiedBy { get; set; }
+		public DateTime? LastModifiedOn { get; set; }
+	}
+}

Sufi.Demo.PeopleDirectory.Domain/Common/IAuditableEntity.cs

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+using System;
+
+namespace Sufi.Demo.PeopleDirectory.Domain.Common
+{
+	public interface IAuditableEntity<TId> : IAuditableEntity, IEntity<TId>
+	{
+
+	}
+
+	public interface IAuditableEntity : IEntity
+	{
+		string? CreatedBy { get; set; }
+		DateTime CreatedOn { get; set; }
+		string? LastModifiedBy { get; set; }
+		DateTime? LastModifiedOn { get; set; }
+	}
+}

Sufi.Demo.PeopleDirectory.Domain/Common/IEntity.cs

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+using System.ComponentModel.DataAnnotations;
+
+namespace Sufi.Demo.PeopleDirectory.Domain.Common
+{
+	public interface IEntity
+	{
+	}
+
+	public interface IEntity<TId> : IEntity 
+	{
+		[Key]
+		TId Id { get; set; }
+	}
+}