Initial commit carried over from private repo. This is V2.

code/MessengerApi.Db.Contracts/Repositories/IUserRepository.cs

@@ -0,0 +1,9 @@
+using MessengerApi.Db.Entities;
+
+namespace MessengerApi.Db.Contracts.Repositories
+{
+    public interface IUserRepository : IRepository<User>
+    {
+        User SingleByApiKeyAndEnabled(Guid id, bool enabled);
+    }
+}