Add query to retrieve all products

src/Printbase.Application/Products/Dtos/AllProductsDto.cs

@@ -0,0 +1,6 @@
+namespace Printbase.Application.Products.Dtos;
+
+public class AllProductsDto
+{
+    public ICollection<ProductDto> Products {get;set;}
+}

src/Printbase.Application/Products/Dtos/ProductDto.cs

@@ -8,7 +8,7 @@ public class ProductDto
     public Guid TypeId { get; set; }
     public string TypeName { get; set; } = string.Empty;
     public string GroupName { get; set; } = string.Empty;
-    public ICollection<ProductVariantDto>? Variants { get; set; }
+    public ICollection<ProductVariantDto> Variants { get; set; } = new List<ProductVariantDto>();
     public DateTime CreatedAt { get; set; }
     public DateTime? UpdatedAt { get; set; }
     public bool IsActive { get; set; }

src/Printbase.Application/Products/Queries/GetAllProducts/GetAllProductsQuery.cs

@@ -0,0 +1,9 @@
+using MediatR;
+using Printbase.Application.Products.Dtos;
+
+namespace Printbase.Application.Products.Queries.GetAllProducts;
+
+public class GetAllProductsQuery(bool includeVariants = true) : IRequest<AllProductsDto?>
+{
+    public bool IncludeVariants { get; } = includeVariants;
+}

src/Printbase.Application/Products/Queries/GetAllProducts/GetAllProductsQueryHandler.cs

@@ -0,0 +1,48 @@
+using MediatR;
+using Printbase.Application.Products.Dtos;
+using Printbase.Domain.Repositories;
+
+namespace Printbase.Application.Products.Queries.GetAllProducts;
+
+public class GetAllProductsQueryHandler(IProductRepository productRepository)
+    : IRequestHandler<GetAllProductsQuery, AllProductsDto?>
+{
+    private readonly IProductRepository _productRepository = productRepository 
+                                                             ?? throw new ArgumentNullException(nameof(productRepository));
+
+    public async Task<AllProductsDto?> Handle(GetAllProductsQuery request, CancellationToken cancellationToken)
+    {
+        var products = await _productRepository.GetAllAsync(true, cancellationToken);
+        
+        var allProducts = new AllProductsDto
+        {
+            Products = products.Select(p => new ProductDto
+            {
+                Id = p.Id,
+                Name = p.Name,
+                Description = p.Description,
+                TypeId = p.TypeId,
+                TypeName = p.Type.Name,
+                GroupName = p.Type.Group.Name,
+                CreatedAt = p.CreatedAt,
+                UpdatedAt = p.UpdatedAt,
+                IsActive = p.IsActive,
+                Variants = request.IncludeVariants
+                    ? p.Variants.Select(v => new ProductVariantDto
+                    {
+                        Id = v.Id,
+                        Color = v.Color,
+                        Size = v.Size,
+                        Price = v.Price,
+                        Discount = v.Discount,
+                        Stock = v.Stock,
+                        SKU = v.SKU,
+                        IsActive = v.IsActive
+                    }).ToList()
+                    : []
+            }).ToList() 
+        };
+
+        return allProducts;
+    }
+}