Added endpoint for registering a user locally after successful logon from Auth0

YABA.API/Extensions/ControllerExtensions.cs

@@ -0,0 +1,35 @@
+using Microsoft.AspNetCore.Mvc;
+using System.Security.Claims;
+using YABA.Common.Extensions;
+using YABA.Common.Lookups;
+
+namespace YABA.API.Extensions
+{
+    public static class ControllerExtensions
+    {
+        public static string GetAuthProviderId(this ControllerBase controller)
+        {
+            return GetCustomClaim(controller, ClaimsLookup.AuthProviderId);
+        }
+
+        public static int GetUserId(this ControllerBase controller)
+        {
+            var isValidUserId = int.TryParse(GetCustomClaim(controller, ClaimsLookup.UserId), out int userId);
+            return isValidUserId ? userId : 0;
+        }
+
+        public static string GetCustomClaim(this ControllerBase controller, ClaimsLookup claim)
+        {
+            var claimsIdentity = controller.User.Identity as ClaimsIdentity;
+            return claimsIdentity.FindFirst(claim.GetClaimName())?.Value.ToString();
+        }
+
+        public static string GetIpAddress(this ControllerBase controller)
+        {
+            if (controller.Request.Headers.ContainsKey("X-Forwarded-For"))
+                return controller.Request.Headers["X-Forwarded-For"];
+
+            return controller.HttpContext.Connection.RemoteIpAddress.MapToIPv4().ToString();
+        }
+    }
+}