TD-2408 Added a condition to check existing centre name

Author: rshrirohit

DigitalLearningSolutions.Web/Controllers/SuperAdmin/Centres/CentresController.cs

@@ -418,6 +418,12 @@ public IActionResult AddCentre()
         [Route("SuperAdmin/Centres/AddCentre")]
         public IActionResult AddCentre(AddCentreSuperAdminViewModel model)
         {
+            var centres = centresDataService.GetAllCentres().ToList();
+            bool isCentreNamePresent = centres.Any(center => center.Item2 == model.CentreName);
+            if (isCentreNamePresent)
+            {
+                ModelState.AddModelError("CentreName", CommonValidationErrorMessages.CentreNameAlreadyExist);
+            }
             if (!ModelState.IsValid)
             {
                 var centreTypes = this.centresDataService.GetCentreTypes().ToList();

DigitalLearningSolutions.Web/Helpers/CommonValidationErrorMessages.cs

@@ -33,5 +33,6 @@ public static class CommonValidationErrorMessages
         public const string PasswordSimilarUsername = "Enter a password which is less similar to your user name";
         public const string PrimaryEmailInUseDuringDelegateRegistration =
             "A user with this email address is already registered";
+        public const string CentreNameAlreadyExist = "The centre name you have entered already exists, please enter a different centre name";
     }
 }