From df53d86f4cc568a40f60925d4f14b6981a804d8b Mon Sep 17 00:00:00 2001
From: Andrija Stevanovic <andrijastev4@gmail.com>
Date: Mon, 9 Feb 2026 19:15:34 +0100
Subject: [PATCH] implement

---
 .../CreateWhiteboardCommandHandler.cs         | 24 +--------------
 .../Whiteboard/ValueObjects/WhiteboardCode.cs | 29 +++++++++++++++++++
 2 files changed, 30 insertions(+), 23 deletions(-)

diff --git a/dotnet/AipsCore/Application/Models/Whiteboard/Command/CreateWhiteboard/CreateWhiteboardCommandHandler.cs b/dotnet/AipsCore/Application/Models/Whiteboard/Command/CreateWhiteboard/CreateWhiteboardCommandHandler.cs
index f5baf88..3d3323f 100644
--- a/dotnet/AipsCore/Application/Models/Whiteboard/Command/CreateWhiteboard/CreateWhiteboardCommandHandler.cs
+++ b/dotnet/AipsCore/Application/Models/Whiteboard/Command/CreateWhiteboard/CreateWhiteboardCommandHandler.cs
@@ -18,15 +18,7 @@ public class CreateWhiteboardCommandHandler : ICommandHandler<CreateWhiteboardCo
     
     public async Task<WhiteboardId> Handle(CreateWhiteboardCommand command, CancellationToken cancellationToken = default)
     {
-        WhiteboardCode whiteboardCode;
-        bool codeExists;
-
-        do
-        {
-            whiteboardCode = GenerateUniqueWhiteboardCode();
-
-            codeExists = await _whiteboardRepository.WhiteboardCodeExists(whiteboardCode);
-        } while (codeExists);
+        var whiteboardCode = await WhiteboardCode.GenerateUniqueAsync(_whiteboardRepository);
         
         var whiteboard = Domain.Models.Whiteboard.Whiteboard.Create(command.OwnerId, whiteboardCode.CodeValue, command.Title);
 
@@ -35,18 +27,4 @@ public class CreateWhiteboardCommandHandler : ICommandHandler<CreateWhiteboardCo
         
         return whiteboard.Id;
     }
-
-    // TRENUTNO SAMO, CE SE NAPRAVI KO SERVIS IL KAKO VEC KASNIJE
-    private static WhiteboardCode GenerateUniqueWhiteboardCode()
-    {
-        var rng = new Random();
-        char[] result = new char[8];
-
-        for (int i = 0; i < result.Length; i++)
-        {
-            result[i] = (char)('0' + rng.Next(0, 10));
-        }
-        
-        return new WhiteboardCode(new string(result));
-    }
 }
\ No newline at end of file
diff --git a/dotnet/AipsCore/Domain/Models/Whiteboard/ValueObjects/WhiteboardCode.cs b/dotnet/AipsCore/Domain/Models/Whiteboard/ValueObjects/WhiteboardCode.cs
index 530f5f1..895fe5e 100644
--- a/dotnet/AipsCore/Domain/Models/Whiteboard/ValueObjects/WhiteboardCode.cs
+++ b/dotnet/AipsCore/Domain/Models/Whiteboard/ValueObjects/WhiteboardCode.cs
@@ -1,6 +1,7 @@
 using AipsCore.Domain.Abstract.Rule;
 using AipsCore.Domain.Abstract.ValueObject;
 using AipsCore.Domain.Common.Validation.Rules;
+using AipsCore.Domain.Models.Whiteboard.External;
 using AipsCore.Domain.Models.Whiteboard.Validation;
 
 namespace AipsCore.Domain.Models.Whiteboard.ValueObjects;
@@ -25,4 +26,32 @@ public record WhiteboardCode : AbstractValueObject
             new WhiteboardCodeCharsetRule(CodeValue)
         ];
     }
+
+    public async static Task<WhiteboardCode> GenerateUniqueAsync(IWhiteboardRepository whiteboardRepository)
+    {
+        WhiteboardCode whiteboardCode;
+        bool codeExists;
+
+        do
+        {
+            whiteboardCode = Generate();
+
+            codeExists = await whiteboardRepository.WhiteboardCodeExists(whiteboardCode);
+        } while (codeExists);
+
+        return whiteboardCode;
+    }
+
+    public static WhiteboardCode Generate()
+    {
+        var rng = new Random();
+        char[] result = new char[8];
+
+        for (int i = 0; i < result.Length; i++)
+        {
+            result[i] = (char)('0' + rng.Next(0, 10));
+        }
+        
+        return new WhiteboardCode(new string(result));
+    }
 } 
\ No newline at end of file