implement

dotnet/AipsCore/Application/Models/Shape/Command/CreateRectangle/CreateRectangleCommand.cs

@@ -0,0 +1,13 @@
+using AipsCore.Application.Abstract.Command;
+using AipsCore.Domain.Models.Shape.ValueObjects;
+
+namespace AipsCore.Application.Models.Shape.Command.CreateRectangle;
+
+public record CreateRectangleCommand(
+    string WhiteboardId,
+    int PositionX,
+    int PositionY,
+    string Color,
+    int EndPositionX,
+    int EndPositionY,
+    int BorderThickness) : ICommand<ShapeId>;

dotnet/AipsCore/Application/Models/Shape/Command/CreateRectangle/CreateRectangleCommandHandler.cs

@@ -0,0 +1,35 @@
+using AipsCore.Application.Abstract.Command;
+using AipsCore.Domain.Abstract;
+using AipsCore.Domain.Models.Shape.External;
+using AipsCore.Domain.Models.Shape.Sub.Rectangle;
+using AipsCore.Domain.Models.Shape.ValueObjects;
+
+namespace AipsCore.Application.Models.Shape.Command.CreateRectangle;
+
+public class CreateRectangleCommandHandler : ICommandHandler<CreateRectangleCommand, ShapeId>
+{
+    private readonly IShapeRepository _shapeRepository;
+    private readonly IUnitOfWork _unitOfWork;
+
+    public CreateRectangleCommandHandler(IShapeRepository shapeRepository, IUnitOfWork unitOfWork)
+    {
+        _shapeRepository = shapeRepository;
+        _unitOfWork = unitOfWork;
+    }
+    
+    public async Task<ShapeId> Handle(CreateRectangleCommand command, CancellationToken cancellationToken = default)
+    {
+        var rectangle = Rectangle.Create(
+            command.WhiteboardId,
+            command.PositionX, command.PositionY,
+            command.Color,
+            command.EndPositionX,
+            command.EndPositionY,
+            command.BorderThickness);
+
+        await _shapeRepository.Add(rectangle, cancellationToken);
+        await _unitOfWork.SaveChangesAsync(cancellationToken);
+
+        return rectangle.Id;
+    }
+}