From e9ea07b58a514c5f40ddbb3e69bbac3b0ba1cc7d Mon Sep 17 00:00:00 2001
From: Veljko Tosic <veljkotosic6@gmail.com>
Date: Mon, 9 Feb 2026 00:15:47 +0100
Subject: [PATCH] Basic create command and handler for whiteboard

---
 .../CreateWhiteboardCommand.cs                |  7 +++
 .../CreateWhiteboardCommandHandler.cs         | 52 +++++++++++++++++++
 2 files changed, 59 insertions(+)
 create mode 100644 dotnet/AipsCore/Application/Models/Whiteboard/Command/CreateWhiteboard/CreateWhiteboardCommand.cs
 create mode 100644 dotnet/AipsCore/Application/Models/Whiteboard/Command/CreateWhiteboard/CreateWhiteboardCommandHandler.cs

diff --git a/dotnet/AipsCore/Application/Models/Whiteboard/Command/CreateWhiteboard/CreateWhiteboardCommand.cs b/dotnet/AipsCore/Application/Models/Whiteboard/Command/CreateWhiteboard/CreateWhiteboardCommand.cs
new file mode 100644
index 0000000..616d7c2
--- /dev/null
+++ b/dotnet/AipsCore/Application/Models/Whiteboard/Command/CreateWhiteboard/CreateWhiteboardCommand.cs
@@ -0,0 +1,7 @@
+using System.Windows.Input;
+using AipsCore.Application.Abstract.Command;
+using AipsCore.Domain.Models.Whiteboard.ValueObjects;
+
+namespace AipsCore.Application.Models.Whiteboard.Command.CreateWhiteboard;
+
+public record CreateWhiteboardCommand(string OwnerId, string Title) : ICommand<WhiteboardId>;
\ No newline at end of file
diff --git a/dotnet/AipsCore/Application/Models/Whiteboard/Command/CreateWhiteboard/CreateWhiteboardCommandHandler.cs b/dotnet/AipsCore/Application/Models/Whiteboard/Command/CreateWhiteboard/CreateWhiteboardCommandHandler.cs
new file mode 100644
index 0000000..f5baf88
--- /dev/null
+++ b/dotnet/AipsCore/Application/Models/Whiteboard/Command/CreateWhiteboard/CreateWhiteboardCommandHandler.cs
@@ -0,0 +1,52 @@
+using AipsCore.Application.Abstract.Command;
+using AipsCore.Domain.Abstract;
+using AipsCore.Domain.Models.Whiteboard.External;
+using AipsCore.Domain.Models.Whiteboard.ValueObjects;
+
+namespace AipsCore.Application.Models.Whiteboard.Command.CreateWhiteboard;
+
+public class CreateWhiteboardCommandHandler : ICommandHandler<CreateWhiteboardCommand, WhiteboardId>
+{
+    private readonly IWhiteboardRepository _whiteboardRepository;
+    private readonly IUnitOfWork _unitOfWork;
+    
+    public CreateWhiteboardCommandHandler(IWhiteboardRepository whiteboardRepository, IUnitOfWork unitOfWork)
+    {
+        _whiteboardRepository = whiteboardRepository;
+        _unitOfWork = unitOfWork;
+    }
+    
+    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 whiteboard = Domain.Models.Whiteboard.Whiteboard.Create(command.OwnerId, whiteboardCode.CodeValue, command.Title);
+
+        await _whiteboardRepository.Save(whiteboard, cancellationToken);
+        await _unitOfWork.SaveChangesAsync(cancellationToken);
+        
+        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