initial commit of source

src/Api/Models/Request/Accounts/UpdateTwoFactorRequestModel.cs

@@ -0,0 +1,22 @@
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+
+namespace Bit.Api.Models
+{
+    public class UpdateTwoFactorRequestModel : IValidatableObject
+    {
+        [Required]
+        public string MasterPasswordHash { get; set; }
+        [Required]
+        public bool? Enabled { get; set; }
+        public string Token { get; set; }
+
+        public IEnumerable<ValidationResult> Validate(ValidationContext validationContext)
+        {
+            if(Enabled.HasValue && Enabled.Value && string.IsNullOrWhiteSpace(Token))
+            {
+                yield return new ValidationResult("Token is required.", new[] { "Token" });
+            }
+        }
+    }
+}