Rebadge the rest of the files

src/Imprink.Application/Products/Handlers/CreateProductVariantHandler.cs

@@ -0,0 +1,54 @@
+using Imprink.Application.Products.Commands;
+using Imprink.Application.Products.Dtos;
+using Imprink.Domain.Entities.Product;
+using MediatR;
+
+namespace Imprink.Application.Products.Handlers;
+
+public class CreateProductVariantHandler(IUnitOfWork unitOfWork)
+    : IRequestHandler<CreateProductVariantCommand, ProductVariantDto>
+{
+    public async Task<ProductVariantDto> Handle(CreateProductVariantCommand request, CancellationToken cancellationToken)
+    {
+        await unitOfWork.BeginTransactionAsync(cancellationToken);
+        
+        try
+        {
+            var productVariant = new ProductVariant
+            {
+                ProductId = request.ProductId,
+                Size = request.Size,
+                Color = request.Color,
+                Price = request.Price,
+                ImageUrl = request.ImageUrl,
+                Sku = request.Sku,
+                StockQuantity = request.StockQuantity,
+                IsActive = request.IsActive,
+                Product = null!
+            };
+
+            var createdVariant = await unitOfWork.ProductVariantRepository.AddAsync(productVariant, cancellationToken);
+            await unitOfWork.CommitTransactionAsync(cancellationToken);
+
+            return new ProductVariantDto
+            {
+                Id = createdVariant.Id,
+                ProductId = createdVariant.ProductId,
+                Size = createdVariant.Size,
+                Color = createdVariant.Color,
+                Price = createdVariant.Price,
+                ImageUrl = createdVariant.ImageUrl,
+                Sku = createdVariant.Sku,
+                StockQuantity = createdVariant.StockQuantity,
+                IsActive = createdVariant.IsActive,
+                CreatedAt = createdVariant.CreatedAt,
+                ModifiedAt = createdVariant.ModifiedAt
+            };
+        }
+        catch
+        {
+            await unitOfWork.RollbackTransactionAsync(cancellationToken);
+            throw;
+        }
+    }
+}