Revert "Moves some files, adds notes, starts poc for back office login providers"

Signed-off-by: Bjarke Berg <mail@bergmania.dk>

src/Umbraco.Web.BackOffice/Controllers/AuthenticationController.cs

@@ -21,7 +21,6 @@ using Umbraco.Core.Services;
 using Umbraco.Extensions;
 using Umbraco.Net;
 using Umbraco.Web.BackOffice.Filters;
-using Umbraco.Web.BackOffice.Security;
 using Umbraco.Web.Common.ActionsResults;
 using Umbraco.Web.Common.Attributes;
 using Umbraco.Web.Common.Controllers;
@@ -164,6 +163,7 @@ namespace Umbraco.Web.BackOffice.Controllers
             var user = await _userManager.FindByIdAsync(User.Identity.GetUserId());
             if (user == null) throw new InvalidOperationException("Could not find user");
 
+            ExternalSignInAutoLinkOptions autoLinkOptions = null;
             var authType = (await _signInManager.GetExternalAuthenticationSchemesAsync())
                .FirstOrDefault(x => x.Name == unlinkLoginModel.LoginProvider);
 
@@ -173,18 +173,11 @@ namespace Umbraco.Web.BackOffice.Controllers
             }
             else
             {
-                var opt = _externalAuthenticationOptions.Get(authType.Name);
-                if (opt == null)
+                autoLinkOptions = _externalAuthenticationOptions.Get(authType.Name);
+                if (!autoLinkOptions.AllowManualLinking)
                 {
-                    return BadRequest($"Could not find external authentication options registered for provider {unlinkLoginModel.LoginProvider}");
-                }
-                else
-                {
-                    if (!opt.AutoLinkOptions.AllowManualLinking)
-                    {
-                        // If AllowManualLinking is disabled for this provider we cannot unlink
-                        return BadRequest();
-                    }
+                    // If AllowManualLinking is disabled for this provider we cannot unlink
+                    return BadRequest();
                 }
             }
 
@@ -250,7 +243,7 @@ namespace Umbraco.Web.BackOffice.Controllers
         /// </remarks>
         [UmbracoBackOfficeAuthorize]
         [SetAngularAntiForgeryTokens]
-        [CheckIfUserTicketDataIsStale]
+        //[CheckIfUserTicketDataIsStale] // TODO: Migrate this, though it will need to be done differently at the cookie auth level
         public UserDetail GetCurrentUser()
         {
             var user = _backofficeSecurityAccessor.BackOfficeSecurity.CurrentUser;